SR731HTTC2R2J Equivalent & Substitute Parts

Part Overview

The SR731HTTC2R2J is a 2.2 Ohm ±5% 0.1W thick film chip resistor manufactured by KOA Speer Electronics, Inc. in the 0201 (0603 Metric) package. This component is designed for current sensing applications in automotive environments and meets AEC-Q200 qualification standards. The part is classified as "Not For New Designs," indicating that alternative solutions should be evaluated for new product development. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability.

Substiute Parts

SR731HTTC2R2J

KOA Speer Electronics, Inc.In Stock: 1001SR731HTTC2R2J Datasheet

Current PartRFQ

SR731HTTCM2R2J

KOA Speer Electronics, Inc.In Stock: 990SR731HTTCM2R2J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SR731HTTC2R2J is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 2.2 Ohms
• Tolerance: ±5%
• Power rating: 0.1W (1/10W)
• Temperature coefficient: 0 / +400ppm/°C
• Operating temperature range: -55°C ~ 125°C

Mechanical Parameters:

• Package type: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height seated (max): 0.010" (0.26mm)
• Number of terminations: 2

Compliance & Certification:

• Automotive AEC-Q200 qualification
• RoHS3 compliance
• Moisture Sensitivity Level 1
• Current sensing application suitability
• Thick film composition

Substitute parts must match all electrical specifications, mechanical dimensions, and automotive qualification requirements. Deviations in any of these parameters result in incompatibility with the original design.

Parameter Comparison

Engineering Selection Recommendations

The SR731HTTCM2R2J serves as a direct substitute for the SR731HTTC2R2J. Both components are manufactured by KOA Speer Electronics, Inc. within the SR73 series and maintain identical electrical, mechanical, and thermal specifications. The key distinction is product status: the original part is designated "Not For New Designs," while the substitute part maintains "Active" status.

For applications requiring the 2.2 Ohm ±5% 0.1W current sense resistor in 0201 package format with AEC-Q200 automotive qualification, the SR731HTTCM2R2J provides full functional and physical compatibility. Both parts comply with ROHS3 requirements, maintain Moisture Sensitivity Level 1, and operate across the -55°C to 125°C temperature range.

The substitute part is suitable for new product designs, production continuity, and long-term supply chain planning where the original part's "Not For New Designs" status presents constraints.

Frequently Asked Questions (FAQ)

Q: Can the SR731HTTCM2R2J be used as a direct replacement for the SR731HTTC2R2J in existing designs?

A: Yes. The SR731HTTCM2R2J is electrically and mechanically identical to the SR731HTTC2R2J. All critical parameters including resistance, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature range are equivalent. Both parts meet AEC-Q200 automotive qualification standards.

Q: What is the significance of the "Not For New Designs" status on the SR731HTTC2R2J?

A: This designation indicates that the SR731HTTC2R2J is in a mature or end-of-life phase and should not be selected for new product development. The SR731HTTCM2R2J, with "Active" status, is the recommended choice for new designs requiring this specification.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts are packaged in 0201 (0603 Metric) format with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and a maximum seated height of 0.010" (0.26mm). They are mechanically interchangeable on PCBs designed for this package type.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the SR731HTTC2R2J and SR731HTTCM2R2J carry AEC-Q200 qualification, confirming suitability for automotive applications. Both are ROHS3 compliant and maintain Moisture Sensitivity Level 1.

Q: What is the temperature coefficient difference, if any?

A: There is no difference. Both parts specify a temperature coefficient of 0 / +400ppm/°C and operate across the identical temperature range of -55°C to 125°C.

Q: Are there any differences in packaging or supply format?

A: The main part is supplied in Tape & Reel (TR) format. The substitute part packaging information is not specified in the available data. Confirm packaging requirements with the supplier for your specific procurement needs.

Q: Can these parts be used interchangeably in current sensing circuits?

A: Yes. Both parts are designated for current sense applications and maintain identical electrical characteristics. The 2.2 Ohm resistance value, ±5% tolerance, and 0.1W power rating are consistent across both components.