RER70F1000MCSL Equivalent & Substitute Parts

Part Overview

The RER70F1000MCSL is a 100 Ohms ±1% 20W wirewound chassis mount resistor manufactured by Vishay Dale, part of the Military MIL-PRF-39009 RER70 series. This component is designed for applications requiring high power dissipation with tight tolerance specifications in military and aerospace environments. The part is currently active in production with 669 units in stock. Substitute parts are identified when inventory constraints, lead time requirements, or specific application needs necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

RER70F1000MCSL

Vishay DaleIn Stock: 746RER70F1000MCSL Datasheet

Current PartRFQ

RER70F1000RC02

Vishay DaleIn Stock: 920RER70F1000RC02 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RER70F1000MCSL is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 Ohms
• Tolerance: ±1%
• Power rating: 20W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 250°C
• Housing type: Aluminum
• Mounting feature: Flanges
• Lead style: Solder Lugs
• Package type: Axial, Box
• Series compliance: Military, MIL-PRF-39009, RER70

The RER70F1000RC02 meets all electrical and mechanical parameters required for direct substitution. Both parts are manufactured by Vishay Dale within the same military-grade series and share identical dimensional specifications, thermal characteristics, and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

Both RER70F1000MCSL and RER70F1000RC02 are active production components from Vishay Dale with identical electrical and mechanical specifications. Selection between these parts should be based on:

Failure Rate Consideration: The RER70F1000RC02 features a lower failure rate classification of R (0.01%) compared to the M (1%) rating of the RER70F1000MCSL. For applications with stringent reliability requirements, the RC02 variant provides enhanced failure rate performance while maintaining all other electrical and mechanical parameters.

Compliance Status: Both parts carry identical RoHS non-compliance status, MSL rating of 1 (Unlimited), ECCN classification of EAR99, and HTSUS code 8533.21.0080. No compliance differentiation exists between the two parts.

Inventory Availability: Current stock levels show 863 units of RER70F1000RC02 available compared to 669 units of RER70F1000MCSL, providing additional sourcing flexibility.

Frequently Asked Questions (FAQ)

Q: Can RER70F1000RC02 be used as a direct replacement for RER70F1000MCSL?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters including resistance value, tolerance, power rating, temperature coefficient, operating temperature range, housing type, mounting features, and lead style. They are both part of the Military MIL-PRF-39009 RER70 series manufactured by Vishay Dale.

Q: What is the difference between the M and R failure rate classifications?

A: The failure rate classification indicates expected failure rates under specified conditions. The RER70F1000RC02 with R (0.01%) classification has a lower expected failure rate than the RER70F1000MCSL with M (1%) classification. Both are military-grade components suitable for high-reliability applications.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical dimensions of 1.062" L x 1.080" W (26.97mm x 27.43mm) with a maximum seated height of 0.561" (14.25mm). They are both housed in aluminum with flanged mounting features and solder lug leads.

Q: Do these parts have different RoHS compliance status?

A: No. Both RER70F1000MCSL and RER70F1000RC02 carry identical RoHS non-compliant status. There is no difference in environmental compliance classification between the two parts.

Q: What is the moisture sensitivity level for these resistors?

A: Both parts have an MSL rating of 1 (Unlimited), indicating unlimited shelf life without moisture sensitivity concerns. No special storage or handling precautions are required for either part.