RER45F20R0RCSL Equivalent & Substitute Parts

Part Overview

The RER45F20R0RCSL is a 20 Ohms ±1% 10W wirewound chassis mount resistor manufactured by Vishay Dale, part of the Military MIL-PRF-39009 RER45 series. This component is classified as Active and maintains 778 units in current inventory stock. The resistor is designed for applications requiring military-grade reliability, moisture resistance, and non-inductive performance across extended temperature ranges. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and military compliance certifications align with the original component requirements.

Substiute Parts

RER45F20R0RCSL

Vishay DaleIn Stock: 841RER45F20R0RCSL Datasheet

Current PartRFQ

RER65F20R0RC02

Vishay DaleIn Stock: 1035RER65F20R0RC02 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RER45F20R0RCSL is determined by strict equivalence across the following critical parameters:

Electrical specifications: Resistance value (20 Ohms), tolerance (±1%), power rating (10W), temperature coefficient (±20ppm/°C), and operating temperature range (-55°C ~ 250°C) must match exactly.

Mechanical specifications: Housing type (Aluminum), mounting feature (Flanges), physical dimensions (0.750" L x 0.800" W, 19.05mm x 20.32mm), seated height (0.405" / 10.29mm), lead style (Solder Lugs), and package type (Axial, Box) must be identical.

Military compliance: Components must belong to the Military MIL-PRF-39009 series with equivalent failure rate classification (R, 0.01%) and moisture sensitivity level (MSL 1).

The RER65F20R0RC02 meets all substitution criteria as a parametric equivalent within the same military standard series.

Parameter Comparison

Engineering Selection Recommendations

Both the RER45F20R0RCSL and RER65F20R0RC02 are Active status components manufactured by Vishay Dale under the Military MIL-PRF-39009 standard. Selection between these parts is based on availability and inventory requirements rather than electrical or mechanical differentiation.

The RER45F20R0RCSL maintains 778 units in stock, while the RER65F20R0RC02 maintains 952 units in stock. Both components carry identical RoHS non-compliance status, ECCN classification (EAR99), and HTSUS code (8533.21.0080). The RER65F20R0RC02 includes documented REACH compliance information availability, which may be relevant for specific regulatory environments.

Component selection should prioritize inventory availability and supply chain lead times. Both parts satisfy identical electrical performance, mechanical fit, and military reliability requirements.

Frequently Asked Questions (FAQ)

Q: Can the RER65F20R0RC02 directly replace the RER45F20R0RCSL in existing designs?

A: Yes. Both components are parametric equivalents with identical electrical specifications (20 Ohms ±1%, 10W), mechanical dimensions (0.750" L x 0.800" W, 0.405" seated height), and military compliance certifications. Physical board layout and connector compatibility remain unchanged.

Q: What is the difference between the RER45 and RER65 series designations?

A: Both series comply with Military MIL-PRF-39009 standards and share identical electrical and mechanical parameters for this 20 Ohm 10W configuration. The series designation reflects internal Vishay Dale product line organization but does not affect functional equivalence or performance characteristics.

Q: Are there any compliance or certification differences between these parts?

A: Both components are RoHS non-compliant and carry identical ECCN (EAR99) and HTSUS (8533.21.0080) classifications. The RER65F20R0RC02 includes documented REACH compliance information availability upon request, which may be relevant for specific regulatory jurisdictions.

Q: What is the failure rate specification for these resistors?

A: Both components carry a failure rate classification of R (0.01%), consistent with Military MIL-PRF-39009 standards for wirewound chassis mount resistors.

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

A: Yes. Both the RER45F20R0RCSL and RER65F20R0RC02 operate across the temperature range -55°C ~ 250°C with a temperature coefficient of ±20ppm/°C, supporting extended thermal environments.