RWR89S2000FMB12 Equivalent & Substitute Parts

Part Overview

The RWR89S2000FMB12 is a 200 Ohms ±1% 3W through-hole wirewound resistor in axial package configuration, manufactured by Vishay Dale under the Military MIL-PRF-39007 series. This component is designed for applications requiring military-grade reliability with moisture resistance in high-temperature environments. The part maintains active product status with 1076 units currently in stock. Substitute parts are identified to address inventory availability, lead time requirements, or specific failure rate specifications for mission-critical applications.

Substiute Parts

RWR89S2000FMB12

Vishay DaleIn Stock: 1144RWR89S2000FMB12 Datasheet

Current PartRFQ

RWR89S2000FRB12

Vishay DaleIn Stock: 1281RWR89S2000FRB12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The RWR89S2000FRB12 qualifies as a direct substitute based on identical electrical and mechanical parameters. Substitution criteria are strictly limited to the following matched specifications:

• Resistance value: 200 Ohms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 250°C
• Physical dimensions: 0.187" Dia x 0.560" L (4.75mm x 14.22mm)
• Series compliance: Military, MIL-PRF-39007, RWR89S
• Termination count: 2

The substitute part differs only in failure rate classification (R at 0.01% versus M at 1%), which represents an enhanced reliability grade within the same product family. Both parts maintain identical functional performance and are interchangeable at the circuit level.

Parameter Comparison

Engineering Selection Recommendations

Both the RWR89S2000FMB12 and RWR89S2000FRB12 maintain active product status and identical compliance certifications. Selection between these parts should be based on failure rate requirements and inventory availability. The RWR89S2000FRB12 offers an enhanced reliability grade (R classification at 0.01% failure rate) compared to the standard M classification (1% failure rate) of the main part, while maintaining all other electrical and mechanical specifications. Both parts are RoHS non-compliant and REACH Affected, with identical ECCN and HTSUS classifications. The substitute part currently has higher inventory availability (1180 units versus 1076 units).

Frequently Asked Questions (FAQ)

Q: Can RWR89S2000FRB12 be used as a direct replacement for RWR89S2000FMB12?

A: Yes. Both parts are electrically and mechanically identical with matching resistance values, tolerances, power ratings, temperature coefficients, operating ranges, and physical dimensions. The only difference is the failure rate classification, where the substitute offers enhanced reliability.

Q: What does the failure rate difference mean for circuit performance?

A: Failure rate classification indicates the expected percentage of component failures over time under specified conditions. The R classification (0.01%) represents a lower failure rate than the M classification (1%), making the substitute part suitable for applications with stricter reliability requirements.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use identical axial package configuration with matching physical dimensions of 0.187" diameter by 0.560" length (4.75mm x 14.22mm). They are pin-compatible and require no circuit board layout modifications.

Q: Do compliance and regulatory certifications differ between these parts?

A: No. Both parts share identical RoHS status (non-compliant), REACH status (Affected), ECCN classification (EAR99), and HTSUS codes (8533.21.0080).

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For standard applications, either part is suitable. For mission-critical or high-reliability applications, the RWR89S2000FRB12 with R-class failure rate provides enhanced reliability assurance.