RWR89SR511FMS73 Equivalent & Substitute Parts

Part Overview

The RWR89SR511FMS73 is a 511 mOhms ±1% 3W through-hole wirewound resistor in axial configuration, manufactured by Vishay Dale. This component is part of the Military MIL-PRF-39007 series and features moisture-resistant construction suitable for demanding applications requiring high reliability and precision. The part is currently active in production with 918 units in stock. Substitute parts are identified when inventory constraints, lead time requirements, or specific application certifications necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

RWR89SR511FMS73

Vishay DaleIn Stock: 1026RWR89SR511FMS73 Datasheet

Current PartRFQ

RWR89SR511FRRSL

Vishay DaleIn Stock: 1314RWR89SR511FRRSL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RWR89SR511FMS73 is determined by strict equivalence across the following critical parameters:

• Resistance value: 511 mOhms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±400ppm/°C
• Operating temperature range: -55°C to 250°C
• Physical dimensions: 0.187" Dia × 0.560" L
• Series compliance: Military, MIL-PRF-39007

The identified substitute part RWR89SR511FRRSL maintains identical electrical specifications and mechanical form factor, differing only in failure rate classification and packaging designation, both of which do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both RWR89SR511FMS73 and RWR89SR511FRRSL are active production components manufactured by Vishay Dale under identical military specifications. Selection between these parts should be based on:

Inventory availability: RWR89SR511FRRSL currently maintains higher stock levels (1254 units) compared to RWR89SR511FMS73 (918 units), making it suitable for high-volume procurement scenarios.

Failure rate requirements: RWR89SR511FRRSL features a lower failure rate classification (R at 0.01%) versus RWR89SR511FMS73 (M at 1%), providing enhanced reliability for mission-critical applications where failure rate specifications are contractually mandated.

Regulatory compliance: Both parts share identical RoHS non-compliance and REACH-affected status, with matching ECCN and HTSUS classifications, ensuring equivalent compliance posture across supply chain and export control requirements.

Frequently Asked Questions (FAQ)

Q: Can RWR89SR511FRRSL be used as a direct replacement for RWR89SR511FMS73?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters including resistance value, tolerance, power rating, temperature coefficient, and operating temperature range. Physical dimensions and axial package configuration are identical, enabling direct circuit board substitution without design modification.

Q: What is the difference in failure rate between these parts?

A: RWR89SR511FMS73 carries a failure rate classification of M (1%), while RWR89SR511FRRSL carries classification R (0.01%). This difference reflects reliability grading under military standards but does not affect the component's functional performance in circuit operation. Selection should be based on contractual failure rate requirements for the application.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS non-compliance status, REACH-affected designation, EAR99 ECCN classification, and 8533.21.0080 HTSUS code. Regulatory and export control posture is equivalent.

Q: What packaging format is used for both parts?

A: Both RWR89SR511FMS73 and RWR89SR511FRRSL are supplied in Tape & Reel (TR) format, standard for automated assembly processes. Physical dimensions remain 0.187" diameter by 0.560" length (4.75mm × 14.22mm).

Q: Are these parts suitable for high-temperature applications?

A: Yes. Both components operate across the temperature range of -55°C to 250°C with a temperature coefficient of ±400ppm/°C, meeting requirements for extended thermal environments within military and industrial specifications.