CSR1206FT18L0 Equivalent & Substitute Parts

Part Overview

The CSR1206FT18L0 is a 0.018 ohm, 1% tolerance, 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 high accuracy and stable performance across industrial temperature ranges. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

CSR1206FT18L0

Stackpole Electronics IncIn Stock: 991CSR1206FT18L0 Datasheet

Current PartRFQ

UCR18EVHFSR018

Rohm SemiconductorIn Stock: 3414UCR18EVHFSR018 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CSR1206FT18L0 is determined by strict equivalence in the following critical parameters:

• Resistance value: 18 mOhms
• Tolerance: ±1%
• Power rating: 0.5W
• Package type: 1206 (3216 metric)
• Composition: Thick film
• Operating temperature range: -55°C to +155°C
• Termination count: 2
• RoHS compliance: ROHS3

The UCR18EVHFSR018 from Rohm Semiconductor meets all these core electrical and mechanical requirements. Dimensional variations within standard 1206 package tolerances and differences in temperature coefficient do not preclude substitution for general current sense applications.

Parameter Comparison

Engineering Selection Recommendations

Both the CSR1206FT18L0 and UCR18EVHFSR018 are active production parts with ROHS3 compliance and identical core electrical specifications. The UCR18EVHFSR018 carries AEC-Q200 automotive qualification, which provides additional reliability assurance for applications requiring automotive-grade components. Dimensional differences fall within standard 1206 package tolerances and do not affect PCB layout compatibility. The temperature coefficient difference (±100 ppm/°C versus 0/+350 ppm/°C) should be evaluated based on application thermal stability requirements.

Frequently Asked Questions (FAQ)

Q: Can the UCR18EVHFSR018 be used as a direct replacement for the CSR1206FT18L0?

A: Yes. Both parts share identical resistance, tolerance, power rating, package type, and operating temperature range. Dimensional variations are within standard 1206 package tolerances and do not affect PCB compatibility.

Q: What is the significance of the AEC-Q200 rating on the UCR18EVHFSR018?

A: AEC-Q200 is an automotive qualification standard indicating the part meets automotive reliability and quality requirements. This certification is relevant only if your application requires automotive-grade components.

Q: Are there differences in temperature coefficient between these parts?

A: Yes. The CSR1206FT18L0 has a temperature coefficient of ±100 ppm/°C, while the UCR18EVHFSR018 has 0/+350 ppm/°C. For applications with strict thermal stability requirements, verify that the UCR18EVHFSR018's temperature coefficient is acceptable.

Q: Do the dimensional differences affect PCB layout?

A: No. The dimensional variations (0.120" vs 0.126" length, 0.061" vs 0.063" width) are within standard 1206 package tolerances and do not require PCB redesign.

Q: Are both parts RoHS compliant?

A: Yes. Both the CSR1206FT18L0 and UCR18EVHFSR018 are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).