CSR25120R025F Equivalent & Substitute Parts

Part Overview

The CSR25120R025F is a 25 mOhms ±1% 1W 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 tight tolerance and thermal stability. The part is classified as Obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

CSR25120R025F

RiedonIn Stock: 1116CSR25120R025F Datasheet

Current PartRFQ

CSRL3-0R025F1

RiedonIn Stock: 851CSRL3-0R025F1 Datasheet

DirectRFQ

CSRL3-0R025F8

RiedonIn Stock: 8699CSRL3-0R025F8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CSR25120R025F is determined by the following critical parameters:

• Resistance Value: 25 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 (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The substitute parts identified maintain all critical electrical and mechanical parameters. The primary difference is the power rating, which is increased from 1W to 3W in the substitute options. This represents an uprating that maintains backward compatibility while providing enhanced thermal performance and reliability margin.

Parameter Comparison

Engineering Selection Recommendations

Both CSRL3-0R025F1 and CSRL3-0R025F8 are suitable substitutes for the obsolete CSR25120R025F. Selection between these two options is determined by packaging requirements:

CSRL3-0R025F8 is the preferred substitute when tape and reel packaging is required for automated assembly processes. This part is available in Tape & Reel (TR) format with 8665 pieces in stock, supporting high-volume production environments.

CSRL3-0R025F1 serves applications where cut tape or alternative packaging formats are acceptable. This variant is available with 803 pieces in stock.

Both substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part. The increased power rating from 1W to 3W provides enhanced thermal margin without altering electrical performance or physical footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can CSRL3-0R025F1 and CSRL3-0R025F8 be used interchangeably with CSR25120R025F?

A: Yes. Both substitutes maintain identical resistance, tolerance, package dimensions, and operating temperature range. The primary difference is packaging format (cut tape versus tape and reel) and power rating (3W versus 1W). The higher power rating ensures thermal performance is maintained or improved.

Q: What is the impact of the increased power rating on circuit design?

A: The 3W rating of substitute parts provides additional thermal headroom compared to the original 1W specification. This does not negatively impact circuit performance; it only reduces junction temperature under identical current conditions, improving reliability and component lifespan.

Q: Are the physical dimensions compatible with the original PCB layout?

A: Yes. Both substitute parts use the same 2512 (6432 Metric) package with identical height specifications (0.035" maximum seated height). Dimensional variations between the original and substitutes are within typical manufacturing tolerances and do not affect PCB assembly compatibility.

Q: What packaging options are available for production?

A: CSRL3-0R025F8 is supplied in Tape & Reel (TR) format for automated pick-and-place assembly. CSRL3-0R025F1 is available in alternative packaging configurations. Verify specific packaging availability with your supplier based on production volume requirements.

Q: Are compliance certifications maintained with these substitutes?

A: Yes. Both substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original CSR25120R025F.