RER40F1401RCSL Equivalent & Substitute Parts

Part Overview

The RER40F1401RCSL is a 1.4 kOhms ±1% 5W wirewound chassis mount resistor manufactured by Vishay Dale, part of the Military MIL-PRF-39009 RER40 series. This component is designed for applications requiring precision resistance with high power dissipation capability in military and aerospace environments. The part maintains Active product status with 772 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, design flexibility, or application-specific requirements.

Substiute Parts

RER40F1401RCSL

Vishay DaleIn Stock: 877RER40F1401RCSL Datasheet

Current PartRFQ

RER60F1401RC02

Vishay DaleIn Stock: 943RER60F1401RC02 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The RER40F1401RCSL qualifies for substitution with the RER60F1401RC02 based on strict electrical and mechanical parameter equivalence. Substitution criteria are determined by the following parameters:

• Resistance value: 1.4 kOhms (identical)
• Tolerance: ±1% (identical)
• Power rating: 5W (identical)
• Composition: Wirewound (identical)
• Temperature coefficient: ±20ppm/°C (identical)
• Operating temperature range: -55°C ~ 250°C (identical)
• Mounting feature: Flanges (identical)
• Lead style: Solder Lugs (identical)
• Housing type: Aluminum (identical)
• Physical dimensions: 0.600" L x 0.646" W (identical)
• Height - Seated (Max): 0.335" (identical)
• Series compliance: Military, MIL-PRF-39009 (identical)
• Failure rate: R (0.01%) (identical)

Both parts are manufactured by Vishay Dale and maintain identical electrical performance and mechanical compatibility. The primary distinction is the series designation (RER40 versus RER60), which represents different manufacturing batches or revisions within the same military specification standard.

Parameter Comparison

Engineering Selection Recommendations

Both the RER40F1401RCSL and RER60F1401RC02 are Active products manufactured by Vishay Dale under the Military MIL-PRF-39009 specification. Selection between these parts should be based on availability and procurement lead times, as all electrical and mechanical parameters are equivalent. Both components maintain identical RoHS non-compliance status and Moisture Sensitivity Level 1 rating, ensuring consistent compliance posture across applications. The RER60F1401RC02 currently maintains higher inventory availability at 839 units compared to 772 units for the RER40F1401RCSL, which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the RER60F1401RC02 be used as a direct replacement for the RER40F1401RCSL?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance values (1.4 kOhms), tolerance (±1%), power rating (5W), temperature coefficient (±20ppm/°C), operating temperature range (-55°C ~ 250°C), and physical dimensions. The series designation difference (RER40 versus RER60) represents manufacturing batch variations within the same MIL-PRF-39009 military specification.

Q: Are there any dimensional differences between these parts?

A: No. Both parts share identical physical dimensions of 0.600" L x 0.646" W (15.24mm x 16.41mm) with a maximum seated height of 0.335" (8.51mm). Mounting features, lead style, and housing type are identical, ensuring drop-in compatibility in existing PCB layouts and mechanical assemblies.

Q: Do both parts meet the same military specifications?

A: Yes. Both the RER40F1401RCSL and RER60F1401RC02 comply with Military MIL-PRF-39009 specifications and maintain identical failure rates of R (0.01%). Both are classified as RoHS non-compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the difference between the RER40 and RER60 series designations?

A: The series designation indicates different manufacturing revisions or production batches within the same MIL-PRF-39009 military specification. All electrical and mechanical parameters remain identical between RER40 and RER60 variants.

Q: Which part should be selected for new designs?

A: Selection should be based on current inventory availability and procurement requirements. The RER60F1401RC02 currently maintains higher stock levels (839 units) compared to the RER40F1401RCSL (772 units). Both parts are Active products suitable for new design implementations.