CSR2512C0R02F Equivalent & Substitute Parts

Part Overview

The CSR2512C0R02F is a 20 mOhms ±1% 3W chip resistor in 2512 (6432 Metric) package manufactured by Riedon. This current sense, non-inductive metal element resistor is designed for precision low-resistance applications requiring high power dissipation. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

CSR2512C0R02F

RiedonIn Stock: 894CSR2512C0R02F Datasheet

Current PartRFQ

CSRL3-0R02F1

RiedonIn Stock: 13423CSRL3-0R02F1 Datasheet

DirectRFQ

CSRL3-0R02F8

RiedonIn Stock: 5156CSRL3-0R02F8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CSR2512C0R02F is determined by strict equivalence across the following critical parameters:

• Resistance value: 20 mOhms
• Tolerance: ±1%
• Power rating: 3W
• Package: 2512 (6432 Metric)
• Composition: Metal Element
• Features: Current Sense, Non-Inductive
• Operating temperature range: -55°C ~ 170°C
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

The substitute parts CSRL3-0R02F1 and CSRL3-0R02F8 meet all these criteria. Both are manufactured by Riedon in the CSRL series and maintain full electrical and mechanical compatibility with the original part. The primary distinction between substitutes relates to temperature coefficient specifications and packaging format (Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

Both CSRL3-0R02F1 and CSRL3-0R02F8 are direct functional equivalents to the obsolete CSR2512C0R02F. Selection between these active alternatives depends on application-specific requirements:

CSRL3-0R02F1 is suitable for applications where temperature coefficient specification is not critical or where the unspecified value is acceptable within design margins.

CSRL3-0R02F8 provides a defined temperature coefficient of ±75ppm/°C, which is 50% higher than the original part's ±50ppm/°C specification. This substitute is appropriate for applications with moderate temperature stability requirements where the higher coefficient remains within acceptable tolerance bands.

Both substitutes are ROHS3 compliant and maintain MSL 1 rating, ensuring compatibility with standard manufacturing and storage conditions. The minor dimensional variations (0.252" vs 0.250" length, 0.126" vs 0.118" width) remain within standard 2512 package tolerances and do not affect PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can CSRL3-0R02F1 and CSRL3-0R02F8 be used interchangeably with CSR2512C0R02F?

A: Yes. Both substitute parts meet all critical electrical and mechanical specifications: 20 mOhms resistance, ±1% tolerance, 3W power rating, 2512 package, metal element composition, current sense non-inductive features, and -55°C to 170°C operating range. The primary difference is temperature coefficient specification.

Q: What is the significance of the temperature coefficient difference between the substitutes?

A: The original CSR2512C0R02F specifies ±50ppm/°C, while CSRL3-0R02F8 specifies ±75ppm/°C. This 25ppm/°C difference affects resistance stability across temperature extremes. For a 20 mOhm resistor over a 225°C temperature span, this represents a maximum resistance change of approximately 0.34 mOhms for the original versus 0.51 mOhms for the substitute. Application thermal requirements determine acceptability.

Q: Are there PCB layout compatibility concerns with the dimensional differences?

A: No. The substitute parts' dimensions (0.252" L x 0.126" W) fall within standard 2512 package tolerances and are compatible with PCB footprints designed for 2512 (6432 Metric) resistors. The 0.035" maximum seated height is identical across all three parts.

Q: What is the packaging difference between the substitutes?

A: Both CSRL3-0R02F1 and CSRL3-0R02F8 are supplied in Tape & Reel (TR) format, which is standard for automated assembly. The original CSR2512C0R02F packaging format is not specified in the provided data.

Q: Are both substitutes RoHS and REACH compliant?

A: Yes. Both CSRL3-0R02F1 and CSRL3-0R02F8 are ROHS3 compliant and REACH unaffected, matching the compliance status of the original part.