CSR1206FTR300 Equivalent & Substitute Parts

Part Overview

The CSR1206FTR300 is a 300 mOhms ±1% thick film chip resistor in 1206 (3216 Metric) package rated for 0.5W power dissipation. Manufactured by Stackpole Electronics Inc, this current sense resistor operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is active in production with 637 units currently in stock. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with application requirements.

Substiute Parts

CSR1206FTR300

Stackpole Electronics IncIn Stock: 717CSR1206FTR300 Datasheet

Current PartRFQ

CSR1206FKR300

Stackpole Electronics IncIn Stock: 23442CSR1206FKR300 Datasheet

DirectRFQ

RCWE1206R300FKEA

Vishay DaleIn Stock: 25901RCWE1206R300FKEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206FTR300 is determined by strict equivalence across the following parameters:

• Resistance value: 300 mOhms
• Tolerance: ±1%
• Power rating: 0.5W minimum
• Package type: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C minimum
• RoHS compliance: ROHS3 or equivalent
• MSL rating: 1 or better

Two substitute parts meet these criteria. CSR1206FKR300 is a direct equivalent from the same manufacturer with identical electrical and mechanical specifications. RCWE1206R300FKEA from Vishay Dale meets all electrical parameters and adds automotive AEC-Q200 qualification and moisture resistance features, with minor dimensional variations within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

CSR1206FKR300 provides direct substitution with identical specifications and active product status. This part is suitable for applications requiring standard current sense resistor functionality with no additional environmental or automotive requirements.

RCWE1206R300FKEA is suitable for applications requiring automotive qualification. The AEC-Q200 rating and moisture-resistant composition provide enhanced reliability for automotive and harsh environment applications. Dimensional variations (length 3.10mm vs 3.05mm, width 1.60mm vs 1.55mm, height 0.70mm vs 0.65mm) remain within standard PCB layout tolerances for 1206 package footprints.

Both substitute parts maintain active product status and full ROHS3 compliance. Selection between CSR1206FKR300 and RCWE1206R300FKEA depends on application environment and automotive qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can CSR1206FKR300 be used as a direct replacement for CSR1206FTR300?

A: Yes. Both parts share identical electrical specifications (300 mOhms ±1%, 0.5W), mechanical package (1206), temperature range (-55°C to 155°C), and compliance ratings (ROHS3, MSL 1). The parts are functionally equivalent.

Q: What is the difference between CSR1206FKR300 and RCWE1206R300FKEA?

A: Both meet all core electrical and mechanical requirements. RCWE1206R300FKEA adds automotive AEC-Q200 qualification and moisture-resistant composition. Dimensional tolerances differ slightly but remain compatible with standard 1206 footprints.

Q: Are the dimensional differences in RCWE1206R300FKEA significant?

A: The RCWE1206R300FKEA dimensions (3.10mm L × 1.60mm W × 0.70mm H) versus CSR1206FTR300 (3.05mm L × 1.55mm W × 0.65mm H) represent standard manufacturing tolerances within the 1206 package specification. These variations are acceptable for PCB assembly without footprint redesign.

Q: Which substitute part should be selected for automotive applications?

A: RCWE1206R300FKEA is specified for automotive applications due to AEC-Q200 qualification and moisture-resistant composition. CSR1206FKR300 is suitable for non-automotive industrial and consumer applications.

Q: Are all three parts ROHS3 compliant?

A: Yes. CSR1206FTR300, CSR1206FKR300, and RCWE1206R300FKEA are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.