CSR0603JTR250 Equivalent & Substitute Parts

Part Overview

The CSR0603JTR250 is a 250 mOhm ±5% thick film chip resistor in 0603 (1608 Metric) package rated for 0.125W (1/8W) power dissipation. Designed for current sense applications, this component operates across -55°C to 155°C with a temperature coefficient of ±300ppm/°C. The part is Active status, ROHS3 compliant, and carries MSL Level 1 (Unlimited) moisture sensitivity rating. Alternative parts may be required due to inventory constraints, tolerance specifications, or application-specific performance requirements.

Substiute Parts

CSR0603JTR250

Stackpole Electronics IncIn Stock: 1129CSR0603JTR250 Datasheet

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CSR0603FKR250

Stackpole Electronics IncIn Stock: 34743CSR0603FKR250 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR0603JTR250 is determined by the following critical parameters:

• Resistance Value: Must be 250 mOhms
• Package Type: Must be 0603 (1608 Metric)
• Power Rating: Must be 0.125W (1/8W) minimum
• Composition: Must be Thick Film
• Application Feature: Must support Current Sense functionality
• Temperature Coefficient: Must be ±300ppm/°C
• Operating Temperature Range: Must cover -55°C to 155°C
• RoHS Compliance: Must maintain ROHS3 Compliant status

The CSR0603FKR250 qualifies as a direct substitute. While it maintains identical resistance, package, power rating, composition, and operating specifications, it offers improved tolerance performance at ±1% compared to the original ±5% specification. This represents an upgrade path for applications requiring tighter tolerance control without compromising any electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both CSR0603JTR250 and CSR0603FKR250 are Active status components manufactured by Stackpole Electronics Inc with identical ROHS3 compliance and MSL Level 1 ratings. The CSR0603FKR250 provides superior tolerance performance at ±1% versus ±5%, making it suitable for applications requiring tighter resistance accuracy while maintaining full electrical and mechanical compatibility. Selection between these parts should be based on tolerance requirements and application specifications rather than compliance or reliability considerations, as both meet equivalent standards.

Frequently Asked Questions (FAQ)

Q: Can CSR0603FKR250 be used as a direct replacement for CSR0603JTR250?

A: Yes. Both parts share identical resistance value (250 mOhms), package type (0603), power rating (0.125W), composition (Thick Film), temperature coefficient (±300ppm/°C), and operating range (-55°C to 155°C). The CSR0603FKR250 offers tighter tolerance (±1% vs ±5%) with no mechanical or electrical incompatibilities.

Q: What are the key differences between these two parts?

A: The primary difference is tolerance specification. CSR0603JTR250 is rated ±5%, while CSR0603FKR250 is rated ±1%. All other electrical characteristics, physical dimensions, and compliance certifications are identical.

Q: Are there any package or footprint differences?

A: No. Both parts use the 0603 (1608 Metric) package with identical dimensions of 0.063" L x 0.031" W (1.60mm x 0.80mm) and maximum seated height of 0.022" (0.55mm). PCB footprints are interchangeable.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CSR0603JTR250 and CSR0603FKR250 are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. REACH status is Unaffected for both parts.

Q: Which part should I select for my current sense application?

A: Both parts are suitable for current sense applications. Selection depends on tolerance requirements. Use CSR0603JTR250 for standard ±5% tolerance applications or CSR0603FKR250 for applications requiring ±1% tolerance accuracy.