CSR1206JK91L0 Equivalent & Substitute Parts

Part Overview

The CSR1206JK91L0 is a 91 mOhms ±5% 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 stable performance across industrial temperature ranges. The part is Active status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for high-reliability applications. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package class.

Substiute Parts

CSR1206JK91L0

Stackpole Electronics IncIn Stock: 793CSR1206JK91L0 Datasheet

Current PartRFQ

73E4R091J

CTS Resistor ProductsIn Stock: 1014673E4R091J Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206JK91L0 is determined by strict equivalence across the following critical parameters:

• Resistance value: 91 mOhms
• Tolerance: ±5%
• Power rating: 0.5W (1/2W)
• Package class: 1206 (3216 Metric)
• Composition: Thick Film
• Application feature: Current Sense
• Temperature coefficient: ±100ppm/°C
• RoHS3 compliance status

The substitute part 73E4R091J from CTS Resistor Products meets all electrical specifications and package requirements. Mechanical dimensions show minor variations within acceptable tolerances for the 1206 package class. Operating temperature range differs slightly (125°C maximum vs. 155°C maximum), which must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain Active product status with full RoHS3 compliance and REACH unaffected classification. The CSR1206JK91L0 supports extended operating temperature to 155°C, while the 73E4R091J operates to 125°C maximum. Selection between these parts depends on application temperature requirements. For applications operating above 125°C, the CSR1206JK91L0 is required. For applications within the -55°C to 125°C range, either part is electrically and mechanically compatible. Mechanical dimension variations (length, width, height) are within standard 1206 package tolerances and do not affect PCB layout compatibility for standard footprints.

Frequently Asked Questions (FAQ)

Q: Can the 73E4R091J replace the CSR1206JK91L0 in all applications?

A: Substitution is valid for applications with operating temperatures not exceeding 125°C. The CSR1206JK91L0 is required for applications requiring operation above 125°C up to 155°C.

Q: Are the mechanical dimension differences significant?

A: The dimension variations (0.006" length difference, 0.002" width difference, 0.002" height difference) fall within standard 1206 package tolerances and do not affect standard PCB footprint compatibility.

Q: Do both parts have identical electrical performance?

A: Both parts share identical resistance (91 mOhms), tolerance (±5%), power rating (0.5W), and temperature coefficient (±100ppm/°C). Operating temperature range is the only electrical specification difference.

Q: Are both parts RoHS3 compliant?

A: Yes, both CSR1206JK91L0 and 73E4R091J are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the primary substitution criterion?

A: The primary criterion is operating temperature range. Verify your application's maximum operating temperature before selecting between these parts.