CSR2512A0R04F Equivalent & Substitute Parts

Part Overview

The CSR2512A0R04F is a 40 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 ROHS3 compliant. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring this resistance value and power rating.

Substiute Parts

CSR2512A0R04F

RiedonIn Stock: 1231CSR2512A0R04F Datasheet

Current PartRFQ

CSRL3-0R04F1

RiedonIn Stock: 1044CSRL3-0R04F1 Datasheet

DirectRFQ

CSRL3-0R04F8

RiedonIn Stock: 7720CSRL3-0R04F8 Datasheet

DirectRFQ

CRA2512-FZ-R040ELF

Bourns Inc.In Stock: 61044CRA2512-FZ-R040ELF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CSR2512A0R04F is determined by the following critical parameters:

• Resistance Value: 40 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 (minimum requirement)

The substitute parts identified meet all critical electrical and mechanical parameters. The primary difference is power rating: the CSR2512A0R04F is rated at 2W, while available substitutes are rated at 3W. A higher power rating is acceptable as it provides additional thermal margin and does not compromise circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

CSRL3-0R04F8 (Riedon) is the primary substitute. This part maintains identical electrical specifications to the CSR2512A0R04F with increased power rating (3W vs 2W), is actively manufactured, and is available in high volume (7667 pcs in stock). It is packaged in Tape & Reel format matching the original specification.

CSRL3-0R04F1 (Riedon) is an alternative from the same manufacturer series with identical electrical characteristics. Packaging format is not specified in available data.

CRA2512-FZ-R040ELF (Bourns Inc.) is a manufacturer-recommended substitute with AEC-Q200 automotive qualification and moisture-resistant construction. This part is suitable for applications requiring automotive-grade reliability and is available in high volume (60979 pcs in stock). Dimensional tolerance is slightly different (0.254" L x 0.132" W vs 0.252" L x 0.126" W), remaining within standard PCB footprint compatibility for 2512 packages.

All three substitutes are ROHS3 compliant with MSL 1 rating and support the full operating temperature range of the original part.

Frequently Asked Questions (FAQ)

Q: Can CSRL3-0R04F8 directly replace CSR2512A0R04F? A: Yes. Both parts share identical resistance (40 mOhms), tolerance (±1%), package (2512), composition (Metal Element), and operating temperature range (-55°C ~ 170°C). The 3W power rating of CSRL3-0R04F8 exceeds the 2W requirement of the original, providing additional thermal margin without affecting circuit performance.

Q: What is the difference between CSRL3-0R04F1 and CSRL3-0R04F8? A: Both are Riedon CSRL series 40 mOhms ±1% 3W resistors with identical electrical specifications. The primary difference is packaging: CSRL3-0R04F8 is supplied in Tape & Reel format, while CSRL3-0R04F1 packaging format is not specified. For production applications, CSRL3-0R04F8 is preferred.

Q: Why is CRA2512-FZ-R040ELF larger in dimensions? A: The CRA2512-FZ-R040ELF has slightly larger dimensions (0.254" L x 0.132" W vs 0.252" L x 0.126" W). Both conform to the 2512 (6432 Metric) package standard and are compatible with standard 2512 PCB footprints. The dimensional difference is within manufacturing tolerance for this package class.

Q: Is CRA2512-FZ-R040ELF suitable for automotive applications? A: Yes. CRA2512-FZ-R040ELF carries AEC-Q200 automotive qualification and moisture-resistant construction, making it suitable for automotive and high-reliability applications. The original CSR2512A0R04F does not carry automotive qualification.

Q: Are all substitutes ROHS3 compliant? A: Yes. All three substitute parts (CSRL3-0R04F1, CSRL3-0R04F8, and CRA2512-FZ-R040ELF) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original part.

Q: What is the temperature coefficient difference? A: CSR2512A0R04F, CSRL3-0R04F1, and CRA2512-FZ-R040ELF all specify ±50ppm/°C. CSRL3-0R04F8 does not specify temperature coefficient in available data. For applications requiring precise temperature coefficient specification, CSRL3-0R04F1 or CRA2512-FZ-R040ELF are preferred.