CSR1206FTR620 Equivalent & Substitute Parts

Part Overview

The CSR1206FTR620 is a 620 mOhms ±1% 0.5W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This current sense resistor is designed for precision low-resistance applications requiring tight tolerance and stable performance across industrial temperature ranges. The part is Active status and widely used in power management, battery monitoring, and current measurement circuits. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and compliance certifications align with application requirements.

Substiute Parts

CSR1206FTR620

Stackpole Electronics IncIn Stock: 1223CSR1206FTR620 Datasheet

Current PartRFQ

RCWE1206R620FKEA

Vishay DaleIn Stock: 18670RCWE1206R620FKEA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206FTR620 is determined by the following critical parameters:

Electrical specifications must match exactly: 620 mOhms resistance, ±1% tolerance, 0.5W power rating, and ±100ppm/°C temperature coefficient. The operating temperature range of -55°C to 155°C must be maintained or exceeded. Package type must be 1206 (3216 Metric) to ensure mechanical and electrical compatibility with existing PCB layouts. Composition must remain thick film to preserve current sense characteristics. Compliance certifications including ROHS3 and MSL 1 must be maintained. Additional certifications such as AEC-Q200 for automotive applications do not disqualify a part but indicate enhanced qualification for specific use cases.

Parameter Comparison

Engineering Selection Recommendations

Both the CSR1206FTR620 and RCWE1206R620FKEA meet the core electrical and mechanical requirements for direct substitution. All critical parameters including resistance value, tolerance, power rating, temperature coefficient, and operating temperature range are identical. Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring environmental and moisture handling compatibility.

The RCWE1206R620FKEA includes AEC-Q200 automotive qualification, which provides additional assurance for applications requiring automotive-grade reliability. This certification does not affect general industrial applications but indicates enhanced qualification testing and process controls. Selection between these parts should be based on supply chain availability, lead time requirements, and application-specific qualification needs.

Frequently Asked Questions (FAQ)

Q: Can RCWE1206R620FKEA replace CSR1206FTR620 in any application? A: Yes. Both parts share identical electrical specifications (620 mOhms ±1%, 0.5W, ±100ppm/°C), identical package type (1206), and identical compliance ratings (ROHS3, MSL 1). The RCWE1206R620FKEA includes additional AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications.

Q: Are there mechanical compatibility concerns between these parts? A: No. Both parts use the 1206 (3216 Metric) package. Dimensional variations (CSR: 3.05mm × 1.55mm vs. RCWE: 3.10mm × 1.60mm) and height differences (CSR: 0.65mm vs. RCWE: 0.70mm) are within standard PCB design tolerances and do not affect placement or soldering.

Q: What is the significance of the moisture resistant feature on the RCWE part? A: The moisture resistant feature on RCWE1206R620FKEA indicates enhanced protection against moisture ingress. Both parts maintain MSL 1 rating, which specifies unlimited shelf life under controlled conditions. The additional moisture resistant designation on the RCWE part reflects manufacturing process enhancements but does not change the MSL classification.

Q: Are both parts suitable for current sense applications? A: Yes. Both parts are specified as current sense resistors with identical temperature coefficients and operating ranges, making them functionally equivalent for precision current measurement circuits.

Q: What should determine the choice between these two parts? A: Selection should be based on supply availability, procurement lead times, and application-specific requirements. If automotive qualification is required, the RCWE1206R620FKEA is the appropriate choice. For general industrial applications, either part meets all technical requirements.