CSRN2512JK40L0 Equivalent & Substitute Parts

Part Overview

The CSRN2512JK40L0 is a 40 mOhms ±5% 2W thick film chip resistor in 2512 (6432 Metric) package manufactured by Stackpole Electronics Inc. This current sense resistor is designed for automotive applications and meets AEC-Q200 qualification standards. The part is active in production with 880 pieces available in inventory. Substitute parts are identified when design requirements allow for tolerance upgrades or packaging format changes while maintaining electrical and mechanical compatibility.

Substiute Parts

CSRN2512JK40L0

Stackpole Electronics IncIn Stock: 914CSRN2512JK40L0 Datasheet

Current PartRFQ

CSRN2512FK40L0

Stackpole Electronics IncIn Stock: 79667CSRN2512FK40L0 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSRN2512JK40L0 is determined by the following criteria:

Mandatory Matching Parameters:

• Resistance value: 40 mOhms
• Power rating: 2W
• Package / Case: 2512 (6432 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive rating: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Allowable Variation:

• Tolerance: May be tighter (lower value) than ±5%
• Packaging format: May differ (Tape & Reel vs. Cut Tape & Digi-Reel®)

The CSRN2512FK40L0 qualifies as a substitute because it maintains all mandatory electrical and mechanical parameters while offering improved tolerance specification (±1% vs. ±5%).

Parameter Comparison

Engineering Selection Recommendations

Both the CSRN2512JK40L0 and CSRN2512FK40L0 are active production parts manufactured by Stackpole Electronics Inc and maintain full AEC-Q200 automotive qualification. Selection between these parts depends on tolerance requirements and packaging logistics:

• CSRN2512JK40L0 is appropriate for applications where ±5% tolerance meets circuit specifications and Tape & Reel packaging is preferred for automated assembly.

• CSRN2512FK40L0 is appropriate for applications requiring tighter tolerance control (±1%) and where Cut Tape or Digi-Reel® packaging formats are compatible with assembly processes.

Both parts maintain identical electrical performance characteristics, thermal behavior, and environmental compliance ratings. The choice between them is driven by tolerance budget and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can CSRN2512FK40L0 be used as a direct replacement for CSRN2512JK40L0?

A: Yes. The CSRN2512FK40L0 is electrically and mechanically compatible. It provides the same 40 mOhms resistance, 2W power rating, and 2512 package footprint. The primary difference is improved tolerance specification (±1% vs. ±5%), which is a performance upgrade.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape in reel format for high-volume automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging provides components in smaller quantities on cut tape segments or specialized reel formats, suitable for lower-volume production or mixed-component assembly lines.

Q: Are both parts suitable for automotive applications?

A: Yes. Both CSRN2512JK40L0 and CSRN2512FK40L0 carry AEC-Q200 automotive qualification and operate across the -55°C to 155°C temperature range required for automotive environments.

Q: Does tolerance difference affect PCB layout or thermal design?

A: No. Both parts share identical physical dimensions (0.250" L x 0.124" W, 6.35mm x 3.15mm), maximum seated height (0.028" / 0.70mm), and thermal characteristics. PCB layout and thermal management remain unchanged.

Q: What is the inventory status for each part?

A: CSRN2512JK40L0 has 880 pieces in stock. CSRN2512FK40L0 has 79,610 pieces in stock, indicating significantly higher availability of the tighter-tolerance variant.