RER45F20R0PCSL Equivalent & Substitute Parts

Part Overview

The RER45F20R0PCSL 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 designed for applications requiring precision resistance with high power dissipation capability in military and aerospace environments. The part maintains Active product status with 926 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 performance needs.

Substiute Parts

RER45F20R0PCSL

Vishay DaleIn Stock: 958RER45F20R0PCSL Datasheet

Current PartRFQ

RER65F20R0RC02

Vishay DaleIn Stock: 1035RER65F20R0RC02 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The RER65F20R0RC02 qualifies as a parametric equivalent to the RER45F20R0PCSL based on the following critical parameters:

• Identical resistance value: 20 Ohms
• Identical tolerance: ±1%
• Identical power rating: 10W
• Identical composition: Wirewound
• Identical temperature coefficient: ±20ppm/°C
• Identical operating temperature range: -55°C ~ 250°C
• Identical housing type: Aluminum
• Identical mounting feature: Flanges
• Identical lead style: Solder Lugs
• Identical package type: Axial, Box
• Identical physical dimensions: 0.750" L x 0.800" W (19.05mm x 20.32mm)
• Identical height: 0.405" (10.29mm)
• Both comply with Military MIL-PRF-39009 standard
• Both rated MSL 1 (Unlimited)
• Both RoHS non-compliant

The substitute part belongs to the RER65 series within the same MIL-PRF-39009 military standard family, ensuring compatibility in applications requiring military-grade wirewound chassis mount resistors.

Parameter Comparison

Engineering Selection Recommendations

Both the RER45F20R0PCSL and RER65F20R0RC02 are Active products manufactured by Vishay Dale and certified to MIL-PRF-39009 military standards. The components are electrically and mechanically identical across all specified parameters. The RER65F20R0RC02 features an improved failure rate specification of R (0.01%) compared to the RER45F20R0PCSL at P (0.1%), indicating enhanced reliability performance within the same military-grade classification. Both parts maintain identical RoHS non-compliance status and ECCN/HTSUS classifications. Selection between these parts should be based on application-specific reliability requirements and inventory availability, as all functional and dimensional specifications are equivalent.

Frequently Asked Questions (FAQ)

Q: Are the RER45F20R0PCSL and RER65F20R0RC02 electrically interchangeable?

A: Yes. Both components provide identical electrical performance with 20 Ohms resistance, ±1% tolerance, 10W power rating, ±20ppm/°C temperature coefficient, and -55°C ~ 250°C operating range.

Q: Do these parts have the same physical footprint?

A: Yes. Both components share identical dimensions of 0.750" L x 0.800" W (19.05mm x 20.32mm) with a maximum seated height of 0.405" (10.29mm), enabling direct board-level substitution.

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

A: Both series comply with MIL-PRF-39009 military standards. The primary distinction is the failure rate specification: RER45 at P (0.1%) and RER65 at R (0.01%). Both are Active products with identical electrical and mechanical parameters.

Q: Are both parts suitable for military applications?

A: Yes. Both the RER45F20R0PCSL and RER65F20R0RC02 are certified to MIL-PRF-39009 military standards with Military series classification, moisture resistance, and non-inductive features suitable for military and aerospace environments.

Q: What is the MSL rating for these components?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations during storage or handling.

Q: Are these parts RoHS compliant?

A: No. Both the RER45F20R0PCSL and RER65F20R0RC02 are RoHS non-compliant, consistent with military-grade wirewound resistor specifications.