CSR2512A0R01F Equivalent & Substitute Parts

Part Overview

The CSR2512A0R01F is a 10 mOhms ±1% 2W chip resistor in 2512 (6432 Metric) package manufactured by Riedon. This current sense, non-inductive metal element resistor operates across -55°C to 170°C and is designed for precision current measurement applications. The part is currently obsolete, making identification of suitable substitutes essential for ongoing design support and component procurement.

Substiute Parts

CSR2512A0R01F

RiedonIn Stock: 1075CSR2512A0R01F Datasheet

Current PartRFQ

CSRL3-0R01F2

RiedonIn Stock: 72032CSRL3-0R01F2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CSR2512A0R01F is determined by the following critical parameters:

• Resistance Value: 10 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 2512 (6432 Metric) (exact match required)
• Composition: Metal Element (exact match required)
• Features: Current Sense, Non-Inductive (exact match required)
• Operating Temperature Range: -55°C ~ 170°C (minimum requirement)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The CSRL3-0R01F2 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary difference is an increased power rating (3W versus 2W), which represents an enhancement rather than a limitation for applications requiring the original 2W specification.

Parameter Comparison

Engineering Selection Recommendations

The CSRL3-0R01F2 is the direct substitute for the obsolete CSR2512A0R01F. Both components are manufactured by Riedon and maintain identical electrical specifications for resistance, tolerance, and operating temperature range. The substitute offers increased power dissipation capability (3W versus 2W), which provides additional thermal margin for current sense applications without compromising performance in circuits designed for the original 2W rating.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility. The CSRL3-0R01F2 is currently in active production with substantial inventory availability, eliminating supply chain constraints associated with the obsolete original part.

Physical dimensions show minor variations within the 2512 package specification, with the substitute measuring 0.252" L x 0.126" W compared to 0.250" L x 0.118" W for the original. Both maintain identical 0.035" maximum seated height, ensuring compatibility with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CSRL3-0R01F2 be used as a direct replacement for the CSR2512A0R01F?

A: Yes. The CSRL3-0R01F2 matches all critical electrical parameters: 10 mOhms resistance, ±1% tolerance, metal element composition, current sense non-inductive features, and -55°C to 170°C operating range. Both components use the 2512 (6432 Metric) package with identical termination configuration.

Q: What is the significance of the increased 3W power rating in the substitute?

A: The CSRL3-0R01F2 provides 50% greater power dissipation capacity than the original 2W specification. This enhancement allows the component to operate with additional thermal margin in current sense applications without introducing any compatibility issues for circuits designed around the original 2W rating.

Q: Are there physical compatibility concerns with the slightly larger dimensions of the substitute?

A: The dimensional differences are minimal and remain within the 2512 package specification. The substitute measures 0.252" L x 0.126" W versus 0.250" L x 0.118" W for the original, with both maintaining 0.035" maximum seated height. Standard PCB layouts designed for 2512 components accommodate these variations.

Q: Do both parts meet the same regulatory and compliance requirements?

A: Yes. Both the CSR2512A0R01F and CSRL3-0R01F2 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both carry EAR99 ECCN classification and REACH Unaffected status.

Q: Why is the original part obsolete while the substitute remains in active production?

A: The CSRL3-0R01F2 represents the current production equivalent within Riedon's product line for this specification class. The transition from CSR to CSRL series reflects standard product lifecycle management, with the newer series offering equivalent or enhanced performance characteristics.