CSR25120R075F Equivalent & Substitute Parts

Part Overview

The CSR25120R075F is a 75 mOhms ±1% 1W 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 classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

CSR25120R075F

RiedonIn Stock: 828CSR25120R075F Datasheet

Current PartRFQ

CSRL3-0R075F1

RiedonIn Stock: 1230CSRL3-0R075F1 Datasheet

DirectRFQ

CSRL3-0R075F8

RiedonIn Stock: 3349CSRL3-0R075F8 Datasheet

DirectRFQ

CSR2512A0R075F

RiedonIn Stock: 2406CSR2512A0R075F Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CSR25120R075F is determined by the following critical parameters that must remain constant or be upgraded:

• Resistance value: 75 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 to 170°C (exact match or better required)
• RoHS3 Compliance: Required

Power rating may be increased from 1W to higher values (2W or 3W) as this represents an upgrade in thermal capability without affecting circuit performance. Substitute parts are grouped by power rating and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

For applications currently using CSR25120R075F, the following selection criteria apply:

Active Product Preference: CSRL3-0R075F8 and CSRL3-0R075F1 are both Active products from Riedon, providing long-term availability and supply chain stability compared to the Obsolete CSR25120R075F. Both CSRL variants offer increased power rating (3W) while maintaining identical electrical specifications and package dimensions.

Packaging Consideration: CSRL3-0R075F8 is supplied in Tape & Reel (TR) format, suitable for automated assembly. CSRL3-0R075F1 packaging is not specified but represents the same electrical component. CSR2512A0R075F is available in Cut Tape (CT) & Digi-Reel® format with 2W power rating and Obsolete status.

Compliance: All substitute parts maintain RoHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) rating, ensuring regulatory and environmental compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can CSRL3-0R075F8 or CSRL3-0R075F1 be used as direct replacements for CSR25120R075F?

A: Yes. Both CSRL3 variants are direct substitutes. They maintain identical resistance (75 mOhms), tolerance (±1%), package (2512), composition (Metal Element), and operating temperature range (-55°C to 170°C). The increased power rating (3W vs. 1W) represents an upgrade that does not affect circuit compatibility.

Q: What is the difference between CSRL3-0R075F8 and CSRL3-0R075F1?

A: Both parts are electrically identical 75 mOhms ±1% 3W resistors in 2512 package. The primary difference is packaging: CSRL3-0R075F8 is supplied in Tape & Reel (TR) format for automated assembly, while CSRL3-0R075F1 packaging is not specified. CSRL3-0R075F8 has higher inventory availability (3244 pcs vs. 1120 pcs).

Q: Why is CSR2512A0R075F listed as an upgrade rather than a direct substitute?

A: CSR2512A0R075F is classified as an upgrade because it provides increased power rating (2W vs. 1W) while maintaining all other electrical and mechanical specifications. It bridges the gap between the 1W original part and the 3W CSRL variants. However, it retains Obsolete product status.

Q: Are there any dimensional differences between the main part and substitutes?

A: Dimensional differences are minimal. CSR25120R075F measures 0.250" L x 0.125" W (6.35mm x 3.18mm), while CSRL variants measure 0.252" L x 0.126" W (6.40mm x 3.20mm). Both maintain identical height (0.035" / 0.90mm maximum). These variations are within standard PCB footprint tolerances for 2512 package components.

Q: Do all substitute parts maintain the same temperature coefficient?

A: CSR2512A0R075F and CSRL3-0R075F1 specify ±50ppm/°C temperature coefficient matching the original part. CSRL3-0R075F8 does not specify temperature coefficient in available data but maintains identical operating temperature range (-55°C to 170°C).

Q: What is the recommended substitute for new designs?

A: CSRL3-0R075F8 is recommended for new designs due to Active product status, highest inventory availability, Tape & Reel packaging for automated assembly, and 3W power rating providing thermal margin. This ensures long-term supply chain continuity and manufacturing efficiency.