- Vishay Intertechnology, Inc.
- Advanced Technology Solutions
The approach to component selection in the design of defense equipment, aerospace equipment, satellite communications, radar, and UAVs (unmanned aerial vehicles) differs significantly from that of general industrial equipment.
Even for passive components such as RESISTORS and CAPACITORS, it is necessary to consider factors such as temperature changes, vibration, humidity, salt damage, long-term storage, gas release in a vacuum environment, and even traceability of the manufacturing lot.
In such markets, there is a demand for components that comply with certifications and approvals such as MIL standards (US military standards), NDS (National Defense Standards), IECQ-CECC, ESCC, and NASA Qualified.
Vishay offers a wide range of RESISTORS, CAPACITORS, and INDUCTORS that comply with these standards. Furthermore, we provide specialized passive components for RF circuits and various test and evaluation equipment, supporting rapid development for the latest defense and aerospace equipment development projects that require significant time for certification. We also offer rapid development support utilizing existing proven products and custom-specified components.
Why are general-purpose components insufficient for defense and aerospace applications?
In general consumer electronics, the requirement is that the device operates normally for a certain period of time. On the other hand, in defense and aerospace applications, "failure-free operation" itself is a crucial design requirement.
For example, artificial satellites cannot have their parts replaced after launch. Also, in military communication equipment and radar, even slight changes in the characteristics of components can affect communication quality and detection performance. For this reason, highly reliable components are used, with strict control over not only component tolerances but also temperature coefficient (TCR), long-term drift, failure rate, and screening history.
In addition to highly reliable certified products, Vishay also offers specialized packaging products and custom solutions to protect electronic components used in harsh environments such as outer space, meeting the advanced requirements of the latest defense and aerospace equipment development.
Differences between MIL-STD, NDS, ESCC, and NASA Qualified
What is Japan's Defense Standard (NDS)?
In Japan, the Ministry of Defense Standard (NDS) is used as the standard for defense equipment. The NDS is a standardized specification that covers components, materials, and test methods, with electronic components categorized under "Category C." As a domestic standard for defense equipment, it is referenced as a criterion for procurement and quality assurance.
| Classification symbols | classification | Example |
|---|---|---|
| A | civil engineering architecture | Construction-related materials |
| C | electricity | Electric wires, CABLES, and electronic components |
| D | Automotive | Vehicle/Chassis |
| F | ship | Hull and outfitting |
| K | chemistry | Paints and chemicals |
| L | fiber | Uniforms and textile materials |
| Y | weapon | Weapon system parts |
| Z | General/Miscellaneous | Packaging/containers |
Figure 1. Positioning of electronic components in the Ministry of Defense Standards (NDS)
What are US military standards?
MIL standards are a set of standards that define quality, testing, and performance requirements used in U.S. military procurement. Representative standards for electronic components include MIL-PRF-55342 (thin-film chip RESISTORS), MIL-PRF-55182 (metal film RESISTORS), and MIL-PRF-39017 (high-reliability RESISTORS). MIL-STD-810 also specifies environmental tests for high and low temperatures, thermal shock, vibration, shock, humidity, and salt damage. These tests are conducted to confirm reliability under harsh environments for aircraft, ships, ground vehicles, and communication equipment.
What are the European ESCC and IECQ-CECC?
In the European aerospace market, compliance with ESCC (European Space Components Coordination) and IECQ-CECC is sometimes considered important in addition to MIL standards.
These standards evaluate not only the performance of individual components, but also the manufacturing process, quality control system, factory audits, and traceability. Therefore, adopting certified components offers the advantage of reducing the burden of quality assurance.
The concepts behind NASA Qualified and Space Grade
Components for space applications require even more stringent evaluation than those for ground-based or general aerospace applications.
Space Level products undergo 100 thermal cycle tests, compliance with NASA Publication 1124, burn-in testing, power conditioning, and additional screening.
Space Grade products can be best understood as products that have undergone additional testing and screening specifically for long-term use in the space environment.
Vishay's high-reliability passive component lineup
DALE series
A standard brand that complies with US military standards.
DALE is Vishay's high-reliability RESISTORS brand, primarily supplying the defense and aerospace markets with MIL-STD compliant products. It also offers a wide range of NASA-certified and DLA-QPL registered products.
The main standards it supports include MIL-PRF-55342, MIL-PRF-55182, and MIL-PRF-39017, and it is widely adopted, mainly in the fields of military POWER SUPPLIES, radar, and communication equipment.
| Military Specification | Model | Wattage Rating (W) | Charac teristic | Resistance Range (Ω) | Tolerance | Part Number Definition |
|---|---|---|---|---|---|---|
| Established Reliability | ||||||
|
MIL-PRF-55342 [Thick Film] 
| RM0502:/01 (RCWPM-0502) | 0.05 | M | 1 to 9.1 | ±2 to ±10 |
 1: M55342 MIL spec. no. indicating MIL-PRF-55342 D55342 for RM1206 2: M Characteristic M = ±300 ppm/°C L = ±200 ppm/°C K = ±100 ppm/°C 3: 02 MIL Spec. sheet number 4: B Termination material B = Pre-tinned nickel barrier, wraparound 5: 10E0 Resistance and Tolerance 6: R Failure rate level (reference current MIL-PRF-55342 QPL list) |
| K, L, M | 10 to 22 M | ±1 to ±10 | ||||
| RM0505:/02 (RCWPM-550) | 0.125 | M | 1 to 9.1 | ±2 to ±10 | ||
| K, L, M | 10 to 22 M | ±1 to ±10 | ||||
| RM1005:/03 (RCWPM-5100) | 0.20 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM1505:/04 (RCWPM-5150) | 0.15 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM2208:/05 (RCWPM-7225) | 0.225 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM0705:/06 (RCWPM-575) | 0.15 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM1206:/07 (RCWPM-1206) | 0.25 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM2010:/08 (RCWPM-2010) | 0.80 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM2512:/09 (RCWPM-2512) | 1.0 | M | 1 to 5.6 | ±2 to ±5 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±5 | ||||
| RM1010:/10 (RCWPM-1100) | 0.50 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM0402:/11 (RCWPM-0402) | 0.05 | M | 1 to 9.1 | ±2 to ±10 | ||
| K, L, M | 10 to 22 M | ±1 to ±10 | ||||
| RM0603:/12 (RCWPM-0603) | 0.10 | M | 1 to 5.6 | ±2 to ±10 | ||
| K, L, M | 5.62 to 22 M | ±1 to ±10 | ||||
| RM0302:/13 (RCWPM-0302) | 0.04 | M | 1 to 9.1 | ±2 to ±10 | ||
| K, L, M | 10 to 22 M | ±1 to ±10 | ||||
Figure 2-1. Example of DALE series
Thin-film chip RESISTORS compliant with MIL-PRF-55342 (M55342)
Figure 2-2 Example of a DALE series datasheet
For DLA (Defense Logistics Agency) QPL-registered products, please check the list of applicable products in the area highlighted in red above.
SFERNICE series
European Aerospace Certification Platform
SFERNICE is more than just a brand of high-precision RESISTORS. It is being developed as a highly reliable platform for European aerospace applications, compliant with ESA, ESCC, and IECQ-CECC standards.
In European aerospace and space applications, compliance with ESCC and ESA-related requirements may be required in addition to MIL compliance. SFERNICE is a product line that is easy to consider as a candidate to meet these requirements.
| MODEL | CHPHR | CHPFR | LHR | PFRR |
|---|---|---|---|---|
 | |  | | |
| Type | Wraparound | Wraparound | Wraparound | Wraparound |
| Specification | ESCC 4001/026 | ESCC 4001/026 | To be defined | ESCC 4001/023 |
| Standard | ESA | ESA | ESA | ESA |
| Logos |  | | ||
| Listed in EPPL | EPPL level 1 | |||
| ESCC QML Certified | Yes | |||
| Variants | 01 to 05 | 06 to 10 | 09 to 12 | |
| Sizes | 0603 / 0805 / 1206 / 2010 / 2512 | 0603 / 0805 / 1206 / 2010 / 2512 | 0603 to 2010 (2512 under development) | 0603 / 0805 / 1206 / 2010 |
| Resistance Range | 1R to 10M | 1R to 10M | 0R100 to 9R99 | 100R to 3M01 |
| Stability Class | 0.25 | |||
| Power Rating at 70°C | 100 mW to 800 mW | 100 mW to 800 mW | 100 mW to 500 mW | 100 mW to 500 mW |
| Maximum Voltage | 50 V to 300 V | 50 V to 300 V | 50 V | 50 V to 200 V |
| Tolerance | 1% to 5% | 1% to 5% | 1% to 20% | 0.05% to 0.1% |
| Tolerance Ratio | ||||
| Temperature Coefficient | 100 ppm/°C and 200 ppm/°C | 100 ppm/°C and 200 ppm/°C | 50 ppm/°C to 300 ppm/°C | 10 ppm/°C and 25 ppm/°C |
| Load Life Stability (2000 h at 70°C at Pn) | 1% | R failure rate | 0.5% at 70°C 2000h at Pn | R failure rate |
| Operating Temperature Range | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C |
| Storage Temperature Range | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C |
| Special Feature | High-temperature storage: 1.5% | |||
| Comments | Specification and qualification ongoing (Q4 2010) | ESA evaluation ongoing |
Figure 3-1. Examples of SFERNICE Aero-Space Thin Film Resistors (CPHR/CHPFR/LHR/PFRB) products.
| MODEL | PHR | PZHR | RV | PRA HR |
|---|---|---|---|---|
 |  | |  | |
| Type | Wraparound | Wraparound | Wraparound | Wraparound Network |
| Specification | ESCC 4001/023 | TBD | CECC 40401-010 | ESCC 4001/025 |
| Standard | ESA | ESA | CECC | ESA |
| Logos |  |  | | |
| Listed in EPPL | EPPL level 1 | n/a | EPPL level 1 | |
| ESCC QML Certified | Yes | Yes | ||
| Variants | 01 to 08 | 01 to 32 | ||
| Sizes | 0603 / 0805 / 1206 / 2010 | 0603 / 0805 / 0402 / 1206 / 2010 / 2512 | 0505 / 0603 / 0805 / 1206 | 100 / 135 / 182 |
| Resistance Range | 10R to 3M | 0R00 | 100R to 1M | 100R to 1M |
| Stability Class | 0.15 | n/a | ||
| Power Rating at 70°C | 100 mW to 500 mW | 70 mW to 1000 mW | 125 mW to 330 mW | 100 mW (per resistor) |
| Maximum Voltage | 35 V to 100 V | 50 V to 75 V | 35 V to 100 V | |
| Tolerance | 0.01% to 0.1% | n/a | 0.1% to 5% | 0.1% to 1% |
| Tolerance Ratio | n/a | n/a | 0.05% to 0.1% | |
| Temperature Coefficient | 5 ppm/°C to 25 ppm/°C | n/a | 10 ppm/°C and 25 ppm/°C | 10 ppm/°C absolute, 3 ppm/°C ratio |
| Load Life Stability (2000 h at 70°C at Pn) | 0.02% typical | 0.05% typical | 0.02% on ratio | |
| Operating Temperature Range | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C |
| Storage Temperature Range | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C | -55°C; +155°C |
| Special Feature | High-temperature storage: 0.15% |
Jumper-ohmic value guaranteed over full temperature range: • 0603: 30 mΩ (1.5 A max.) • 0805: 20 mΩ (2.7 A max.) • 1206: 25 mΩ (3.2 A max.) • 2010: 25 mΩ (5.7 A max.) • 2512: 25 mΩ (6.3 A max.) |
2 to 8 resistors - unequal values available and qualified: CNW | |
| Comments | 0402 ongoing |
ESA specification and qualification ongoing (parts conform to MIL-PRF 32159) |
Figure 3-2. Examples of SFERNICE Aero-Space Thin Film Resistors (PHR/PZHR/RV/PRA HR) products.
Representative products include PHR, PFRR, PRAHR, TNPS ESCC, and MS1 ESCC. These are characterized by low TCR, high accuracy, and long-term stability, and are used in reference circuits for satellite communication equipment and avionics.
NASA Qualified Series
The following series are available as NASA Qualified products:
- RZ Series
- RLR Series
- RNC Series
- RER Series
RZ Series
Military-grade thick-film resistor networks certified to MIL-PRF-83401. RZ040-RZ090 series molded SIP (Single-In-Line Package) type.
| STANDARD ELECTRICAL SPECIFICATIONS | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| VISHAY DALE MODEL/PIN NO/PROFILE | MIL STYLE | MIL SPEC. SHEET | SCHEMATIC | POWER RATING ELEMENT P70℃ W | POWER RATING PACKAGE P70℃ W | RESISTANCE RANGE Ω | TOLERANCE(1) ±% | TEMPERATURE COEFFICIENT(2) (-55°C to +125°C) ±PPM/°C | WEIGHT g |
| MSM06C | RZ040 | 04 | 01 (C) | 0.20 | 1.00 | 10 to 1M | 1,2,5 | 100,300 | 0.7 |
| 03 (G) | 0.20 | 0.60 | 10 to 1M | 1,2,5 | 100,300 | ||||
| 05 (H) | 0.11 | 0.88 | Consult factory | 1,2,5 | 100,300 | ||||
| MSM08C | RZ050 | 05 | 01 (C) | 0.20 | 1.40 | 10 to 1M | 1,2,5 | 100,300 | 0.9 |
| 03 (G) | 0.20 | 0.80 | 10 to 1M | 1,2,5 | 100,300 | ||||
| 05 (H) | 0.11 | 1.32 | Consult factory | 1,2,5 | 100,300 | ||||
| MSM10C | RZ060 | 06 | 01 (C) | 0.20 | 1.80 | 10 to 1M | 1,2,5 | 100,300 | 1.1 |
| 03 (G) | 0.20 | 1.00 | 10 to 1M | 1,2,5 | 100,300 | ||||
| 05 (H) | 0.11 | 1.80 | Consult factory | 1,2,5 | 100,300 | ||||
| MSM06A | RZ070 | 07 | 01 (C) | 0.12 | 0.60 | 10 to 1M | 1,2,5 | 100,300 | 0.4 |
| 03 (G) | 0.12 | 0.36 | 10 to 1M | 1,2,5 | 100,300 | ||||
| 05 (H) | 0.07 | 0.60 | Consult factory | 1,2,5 | 100,300 | ||||
| MSM08A | RZ080 | 08 | 01 (C) | 0.12 | 0.84 | 10 to 1M | 1,2,5 | 100,300 | 0.5 |
| 03 (G) | 0.12 | 0.48 | 10 to 1M | 1,2,5 | 100,300 | ||||
| 05 (H) | 0.07 | 0.84 | Consult factory | 1,2,5 | 100,300 | ||||
| MSM10A | RZ090 | 09 | 01 (C) | 0.12 | 1.08 | 10 to 1M | 1,2,5 | 100,300 | 0.6 |
| 03 (G) | 0.12 | 0.60 | 10 to 1M | 1,2,5 | 100,300 | ||||
| 05 (H) | 0.07 | 1.08 | Consult factory | 1,2,5 | 100,300 | ||||
Military-grade thick-film resistor network certified to MIL-PRF-83401. RZ240 series molded SIP (Single-In-Line Package) type.
| STANDARD ELECTRICAL SPECIFICATIONS | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| VISHAY DALE MODEL/PIN NO/PROFILE | MIL STYLE | MIL SPEC. SHEET | SCHEMATIC | POWER RATING ELEMENT P70℃ W | POWER RATING PACKAGE P70℃ W | RESISTANCE RANGE Ω | TOLERANCE(1) ±% | TEMPERATURE COEFFICIENT(2) (-55°C to +125°C) ±PPM/°C | WEIGHT g |
| MSM10A -01-S4 | RZ 240 | 24 | 01 (C) | 0.12 | 1.08 | 10 to 1M | 1, 2, 5 | 100, 300 | 0.6 |
| MSM10A -03-S2 | 03 (G) | 0.12 | 0.60 | 10 to 1M | |||||
| MSM10A -05-S3 | 05 (H) | 0.07 | 1.08 | Consult factory | |||||
RLR Series
- Complies with the requirements of MIL-PRF-39017.
- Failure Rate: Complies with certified failure rates (please Inquiry the manufacturer for the latest failure rate levels).
- The epoxy coating structure provides excellent moisture resistance.
- Ensuring traceability of materials and manufacturing processes.
- Monthly lot acceptance testing is conducted.
- Extremely low noise characteristics (-40 dB)
- We maintain ample stock of ±1% and ±2% products at our distributors and factories.
- Vishay Dale can develop and implement reliability programs tailored to customer requirements.
| STANDARD ELECTRICAL SPECIFICATIONS | ||||||||
|---|---|---|---|---|---|---|---|---|
| VISHAY DALE MODEL | MIL-PRF-39017 STYLE | MIL SPEC. SHEET | POWER RATING 70°C W | RESISTANCE RANGE(1) Ω | TOLERANCE ±% | TEMPERATURE COEFFICIENT ±ppm/°C | MAXIMUM WORKING VOLTAGE(4) V | LIFE FAILURE RATE(2) |
| ERL05, ERL05..19 (3) | RLR05 | 05 | 0.125 | 4.7 to 100K | 1, 2 | 100 | 200 | M, P, R, S |
| >100K to 1M | M, P, R | |||||||
| ERL07, ERL07..23 (3) | RLR07 | 01 | 0.25 | 1 to 9.76 | 1, 2 | 100 | 250 | M |
| 10 to 3.01M | M, P, R, S | |||||||
| 3.02M to 10M | M, P, R | |||||||
| ERL20, ERL20..11 (3) | RLR20 | 02 | 0.50 | 4.3 to 3.01M | 1, 2 | 100 | 350 | M, P, R, S |
| ERL32, ERL32..1 (3) | RLR32 | 03 | 1.0 | 1 to 2.7M | 1, 2 | 100 | 500 | M, P, R |
Notes
(1) Extended resistance range: DSCC has created a series of drawings
intended to
support extended resistance ranges left otherwise void by the discontinuation of MIL-R-39008 RCR
carbon composition resistors. Vishay Dale is listed as a resource on these drawings as follows:
Applicable MIL standard
MIL-PRF-39017:
The ERL series meets the electrical, environmental, and dimensional requirements specified in MIL-PRF-39017.
MIL-PRF-22684:
In new designs, MIL-PRF-39017 replaces MIL-PRF-22684. The ERL series meets or exceeds the requirements of MIL-PRF-22684.
document:
Certification test and failure rate verification test data are stored by Vishay Dale and can be provided upon request.
Lot traceability information and identification data are stored by Vishay Dale for 5 years.
RNC Series
Military-grade/high-reliability metal film RESISTORS certified to MIL-PRF-55182. High-precision axial lead RNC type, compatible with characteristics J, H, and K.
- Complies with the requirements of MIL-PRF-55182.
- Extremely low noise characteristics (-40 dB)
- Complies with certified failure rates (please Inquiry the manufacturer for the latest failure rate levels).
- We conduct 100% stabilization and screening tests. We can also accommodate Group A testing based on customer requirements upon request.
- Strict control of the temperature coefficient
- Epoxy coating provides excellent moisture resistance.
- The standard leads on RNC products are suitable for soldering and welding.
- Ensuring traceability of materials and manufacturing processes.
- Monthly acceptance tests are conducted.
- Vishay Dale can develop and implement reliability programs tailored to customer requirements.
- We have ample stock of the RNC50, RNC55, RNC60, and RNC65 at our distributors and factory.
- For products compliant with characteristics E and C of MIL-PRF-55182, please refer to the HDN (Military RNR/RNN) datasheet from Vishay Angstrohm: www.vishay.com/doc?66001
| STANDARD ELECTRICAL SPECIFICATIONS | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| GLOBAL MODEL | MIL-PRF-55182 STYLE | MIL SPEC. SHEET | POWER RATING P70°C W | POWER RATING P125°C W | TOLERANCE ±% | MAXIMUM WORKING VOLTAGE(2) V | RESISTANCE RANGE Ω | TEMPERATURE COEFFICIENT ± ppm/°C | LIFE FAILURE RATE (1) |
| ERC50, ERC50..31 (3) | RNC50, RNR50 | 07 | 0.10 | 0.05 | 0.1, 0.5, 1 | 200 | 10 to 796K | 100 (K), 50 (H), 25 (J) | M, P, R, S |
| ERC55, ERC55..65 (3) | RNC55, RNR55 | 01 | 0.125 | 0.10 | 0.1, 0.5, 1 | 200 | 10 to 2M | 100 (K), 50 (H), 25 (J) | M, P, R, S |
| ERC55..200, ERC55..201 (3) | RNC60, RNR60 | 03 | 0.25 | 0.125 | 0.1, 0.5, 1 | 250 | 10 to 2M | 100 (K), 50 (H), 25 (J) | M, P, R, S |
| 2.01M to 3.01M | 100 (K), 50 (H), 25 (J) | M | |||||||
| ERC65, ERC65..65 (3) | RNC65, RNR65 | 05 | 0.50 | 0.25 | 0.1, 0.5, 1 | 300 | 10 to 3.01M | 100 (K), 50 (H), 25 (J) | M, P, R |
| ERC70, ERC70..4 (3) | RNC70, RNR70 | 06 | 0.75 | 0.50 | 0.1, 0.5, 1 | 350 | 10 to 3.01M | 100 (K), 50 (H), 25 (J) | M, P, R |
Notes
(1) Consult factory for current QPL failure rates.
(2) Continuous
working voltage shall
be √P × R or maximum working voltage, whichever is less.
(3) Hot solder dipped leads.
(4)
Tolerance of
± 0.1 % is not applicable to characteristics K.
RWR Series
Military-grade/high-reliability wirewound RESISTORS certified to MIL-PRF-39007. RWR type with axial leads, suitable for S-level applications.
- Features a high-temperature resistant silicone coating.
- Fully welded structure
- MIL-PRF-39007 certified product
- A non-inductive type (Type N) is available. The Ayrton-Perry winding method minimizes the reactance component.
- Supports products with S-level failure rates.
- TERMINALS and winding types W and Z are not listed in the table below, but can be provided upon request. For certified failure rates and resistance tolerances/resistance ranges, please refer to MIL-PRF-39007 QPL.
Material specifications
Resistor: Copper-nickel alloy or nickel-chromium alloy is used depending on the resistance value.
Core: Depending on the rated power, CERAMICS, beryllium oxide (Note 1), steatite, or alumina is used.
Coating: Special high heat-resistant silicone
TERMINALS and rewindings: Identified by letters in the military type designation.
Military symbols
S = Solderable, induction winding
W = Weldable, induction winding
N = Solderable, non-inductive winding
Z = Weldable, non-inductive winding
TERMINALS: Solderable types are tin-plated with Copperweld®
The weldable type is nickel-plated, conforming to MIL-STD-1276 Type N-1.
End cap: Stainless steel
Displayed information: Manufacturer code, JAN code, military PIN, manufacturing date/lot code
Note
(1) The core material of RWR82S and RWR82N uses beryllium oxide CERAMICS.
| STANDARD ELECTRICAL SPECIFICATIONS | |||||
|---|---|---|---|---|---|
| MILITARY MODEL | VISHAY REFERENCE MODEL | POWER RATING P25°C W | RESISTANCE RANGE Ω ± 0.1 % | RESISTANCE RANGE Ω ± 0.5 %, ± 1 % | WEIGHT (typical) g |
| RWR81S | EGS-1-80 | 1 | 0.499 to 1K | 0.1 to 1K | 0.21 |
| RWR81N | EGN-1-80 | 1 | 0.499 to 499 | 0.1 to 499 | 0.21 |
| RWR82S | EGS-2 | 1.5 | 0.499 to 1.3K | 0.1 to 1.3K | 0.23 |
| RWR82N | EGN-2 | 1.5 | 0.499 to 649 | 0.1 to 649 | 0.23 |
| RWR80S | EGS-3-80 | 2 | 0.499 to 3.16K | 0.1 to 3.16K | 0.34 |
| RWR80N | EGN-3-80 | 2 | 0.499 to 1.58K | 0.1 to 1.58K | 0.34 |
| RWR71S | ESS-2A | 2 | 0.499 to 12.1K | 0.1 to 12.1K | 0.90 |
| RWR71N | ESN-2A | 2 | 0.499 to 6.04K | 0.1 to 6.04K | 0.90 |
| RWR89S | ESS-2B | 3 | 0.499 to 4.12K | 0.1 to 4.12K | 0.70 |
| RWR89N | ESN-2B | 3 | 0.499 to 2.05K | 0.1 to 2.05K | 0.70 |
| RWR74S | ESS-5 | 5 | 0.499 to 12.1K | 0.1 to 12.1K | 4.2 |
| RWR74N | ESN-5 | 5 | 0.499 to 6.04K | 0.1 to 6.04K | 4.2 |
| RWR84S | EGS-10-80 | 7 | 0.499 to 12.4K | 0.1 to 12.4K | 3.6 |
| RWR84N | EGN-10-80 | 7 | 0.499 to 6.19K | 0.1 to 6.19K | 3.6 |
| RWR78S | ESS-10 | 10 | 0.499 to 39.2K | 0.1 to 39.2K | 9.0 |
| RWR78N | ESN-10 | 10 | 0.499 to 19.6K | 0.1 to 19.6K | 9.0 |
RER Series
- Features an aluminum heatsink housing.
- The molded structure provides excellent environmental resistance.
- MIL-PRF-39009 certified product
- Fully welded structure
- The non-inductive type employs the Ayrton-Perry winding method to minimize reactance components.
- By attaching it to the chassis, the heat dissipation effect can be utilized.
| STANDARD ELECTRICAL SPECIFICATIONS | |||||
|---|---|---|---|---|---|
| MILITARY MODEL | VISHAY REFERENCE MODEL | POWER RATING P25°C W | RESISTANCE RANGE Ω | TOLERANCE ±% | WEIGHT (typical) g |
| RER40 | ENH05 | 5 | 1 to 1.65K | 1 | 3.3 |
| RER45 | ENH10 | 10 | 1 to 2.8K | 1 | 8.8 |
| RER50 | ENH25 | 20 | 1 to 6.04K | 1 | 16.5 |
| RER55 | ENH50 | 30 | 1 to 4.99K | 1 | 35 |
| RER60 | ERH05 | 5 | 0.10 to 3.32K | 1 | 3 |
| RER65 | ERH10 | 10 | 0.10 to 5.62K | 1 | 6 |
| RER70 | ERH25 | 20 | 0.10 to 12.1K | 1 | 13 |
| RER75 | ERH50 | 30 | 0.10 to 39.2K | 1 | 28 |
Figure 4. Vishay NASA Qualified Product Series
These products undergo additional screening and failure rate management, supporting designs for space applications where long-term reliability is paramount.
We can offer proposals that include CAPACITORS and INDUCTORS
In defense and aerospace equipment, not only RESISTORS, but also CAPACITORS used for POWER SUPPLIES stabilization, DC/DC converters, and INDUCTORS used in FILTERS circuits are required to have the same level of reliability.
Vishay offers a wide range of passive components, including MLCCs, tantalum CAPACITORS, and space-grade INDUCTORS, enabling them to provide comprehensive component solutions for everything from POWER SUPPLIES circuits to high-frequency circuits.
Specifically, potential candidates include the CDR series, M123 series, and VJ HiRel series for MLCCs; CWR06, CWR11, T97, ST, STE, and T16 for tantalum CAPACITORS; and SGIHLP, SGTPL, and Space Grade Magnetics for INDUCTORS and MAGNETIC PARTS.
Furthermore, for projects where certified standard products cannot meet the development schedule or where rapid development initiation is required, we can also provide solutions using COTS (Commercial Off-The-Shelf) products. By utilizing existing proven products and specially designed products, we support shorter development periods and flexible product selection in the defense and aerospace sectors.
Selection points that designers should know
When selecting components, it's crucial to first determine which standards need to be met. Generally, DALE products are the starting point for US MIL requirements, SFERNICE products for ESA/ESCC requirements, and NASA Qualified products for Space Level requirements.
Furthermore, during the design phase, confirming resistance accuracy, TCR, long-term drift, failure rate, burn-in presence/absence, and supply continuity can reduce the risk of re-selection in later processes.
Why RF Termination RESISTORS and RF Solutions are Becoming Important
In recent years, the defense sector has seen advancements in satellite communications (SATCOM), radar, electronic warfare (EW), and software-defined radio (SDR). Furthermore, the communications satellite sector requires support for a wide range of frequency bands, including L-band, S-band, C-band, X-band, K-band, and Ku-band. In such high-frequency circuits, not only resistance accuracy but also impedance matching and frequency characteristics significantly impact system performance. RF termination RESISTORS play a crucial role in suppressing the reflection of high-frequency signals and maintaining communication quality and measurement accuracy.
In addition to various RF solutions, including RF termination RESISTORS, Vishay also offers special specifications and custom solutions, supporting the development of cutting-edge defense and aerospace systems that require high-frequency design, such as military communications equipment, satellite communication systems, radar, and electronic warfare equipment.
Figure 5. Example of RF termination RESISTORS for military communication equipment.
Summary
In defense and aerospace equipment, comprehensive component selection is required, encompassing not only the electrical performance of components but also compliance with standards, quality assurance, and even long-term supplyability.
Vishay offers a wide range of RF solutions, including DALE (MIL-STD compliant), SFERNICE (ESCC/ESA compliant), and NASA Qualified series, as well as high-reliability MLCCs, tantalum CAPACITORS, Space Grade INDUCTORS, and RF termination RESISTORS, to meet the stringent demands of the defense and aerospace markets.
In particular, in recent years, the importance of integrating the selection of high-reliability components and RF components has increased in the satellite communications (SATCOM), radar, software-defined radio (SDR), and UAV (unmanned aerial vehicle) markets. By organizing the required specifications and candidate components in the early stages of design, rework during certification testing and mass production transitions can be reduced, leading to shorter development cycles.
In addition to certified standard products, Vishay also offers custom-designed products and COTS (Commercial Off-The-Shelf) solutions, backed by extensive experience. We can provide flexible component selection and development support for projects where existing certified products are insufficient or where rapid development startup is required.
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