CSRN2512JTR250 Equivalent & Substitute Parts

Part Overview

The CSRN2512JTR250 is a 250 mOhms ±5% 2W chip resistor in 2512 (6432 Metric) package manufactured by Stackpole Electronics Inc. This thick film current sense resistor is designed for automotive applications and carries AEC-Q200 qualification. The part is active in production with 841 pieces currently in stock. Substitute parts are identified when design requirements permit tolerance relaxation or when inventory constraints necessitate alternative sourcing while maintaining core electrical and mechanical compatibility.

Substiute Parts

CSRN2512JTR250

Stackpole Electronics IncIn Stock: 881CSRN2512JTR250 Datasheet

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CSRN2512FKR250

Stackpole Electronics IncIn Stock: 272026CSRN2512FKR250 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CSRN2512FKR250 qualifies as a direct substitute for the CSRN2512JTR250 based on the following criteria:

Matching Parameters (Substitution Basis):

• Identical resistance value: 250 mOhms
• Identical power rating: 2W
• Identical package: 2512 (6432 Metric)
• Identical physical dimensions: 0.250" L x 0.124" W (6.35mm x 3.15mm)
• Identical height: 0.028" (0.70mm) maximum seated
• Identical composition: Thick Film
• Identical temperature coefficient: ±200ppm/°C
• Identical operating temperature range: -55°C ~ 155°C
• Identical automotive qualification: AEC-Q200
• Identical current sense feature
• Identical RoHS and REACH compliance status

Distinguishing Parameter:

• Tolerance: CSRN2512FKR250 offers ±1% tolerance versus ±5% tolerance of the main part

The substitute part provides superior tolerance performance while maintaining all other electrical and mechanical specifications. This relationship is unidirectional: the CSRN2512FKR250 can replace the CSRN2512JTR250 in applications where tighter tolerance is acceptable or beneficial.

Parameter Comparison

Engineering Selection Recommendations

Both CSRN2512JTR250 and CSRN2512FKR250 are active production parts with full AEC-Q200 automotive qualification and ROHS3 compliance. Selection between these parts depends on tolerance requirements:

• Use CSRN2512JTR250 when ±5% tolerance meets circuit specifications and cost optimization is prioritized.
• Use CSRN2512FKR250 when circuit design requires tighter tolerance control or when the ±1% specification provides margin for system performance.

Both parts are suitable for current sense applications in automotive environments across the full operating temperature range of -55°C to 155°C. Packaging, thermal characteristics, and reliability ratings are identical between the two options.

Frequently Asked Questions (FAQ)

Q: Can CSRN2512FKR250 replace CSRN2512JTR250 in existing designs?

A: Yes. The CSRN2512FKR250 is mechanically and electrically compatible with identical package dimensions, power rating, resistance value, and operating temperature range. The tighter ±1% tolerance of the substitute part is a performance enhancement that does not create compatibility issues.

Q: What is the primary difference between these two parts?

A: The tolerance specification differs. CSRN2512JTR250 carries ±5% tolerance while CSRN2512FKR250 carries ±1% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 qualification and are rated for automotive use across the operating temperature range of -55°C to 155°C.

Q: Do these parts have the same physical footprint?

A: Yes. Both parts use the 2512 (6432 Metric) package with identical dimensions of 0.250" L x 0.124" W (6.35mm x 3.15mm) and maximum seated height of 0.028" (0.70mm).

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited).