SR73W2HTTER100F Equivalent & Substitute Parts

Part Overview

The SR73W2HTTER100F is an automotive-grade current sense resistor manufactured by KOA Speer Electronics, Inc. This thick film chip resistor is designed for precision current measurement applications in automotive systems. The part features a 100 mOhm resistance value with ±1% tolerance, 0.75W power rating, and is packaged in the 2010 (5025 Metric) form factor. The component is AEC-Q200 qualified for automotive applications and maintains moisture resistance characteristics. The SR73W2HTTER100F is currently in active production status. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative stock sources.

Substiute Parts

SR73W2HTTER100F

KOA Speer Electronics, Inc.In Stock: 834SR73W2HTTER100F Datasheet

Current PartRFQ

SR732HTTER100F

KOA Speer Electronics, Inc.In Stock: 10705SR732HTTER100F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SR73W2HTTER100F is based on electrical and mechanical parameter equivalence within the SR73 series of current sense resistors. The substitute part SR732HTTER100F maintains identical specifications across all critical parameters that determine functional compatibility: resistance value, tolerance, power rating, package form factor, temperature coefficient, operating temperature range, and automotive AEC-Q200 qualification. Both parts are thick film compositions with MSL 1 moisture sensitivity rating and ROHS3 compliance. The substitution is valid because the parts share the same electrical performance characteristics, thermal behavior, and mechanical dimensions required for direct board-level replacement in current sensing applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SR73W2HTTER100F and SR732HTTER100F are active production parts from KOA Speer Electronics, Inc., ensuring long-term availability and supply chain stability. Selection between these parts is based on inventory availability and procurement requirements rather than technical performance differences. The SR732HTTER100F currently maintains higher inventory levels (10,692 pieces) compared to the SR73W2HTTER100F (766 pieces), making it suitable for high-volume production requirements. Both parts carry identical AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status, confirming suitability for regulated automotive applications. The electrical and thermal characteristics are equivalent, supporting direct substitution in current sensing circuits without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can SR732HTTER100F be used as a direct replacement for SR73W2HTTER100F?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical resistance values, tolerance, power ratings, package dimensions, temperature coefficients, and operating temperature ranges. Direct board-level substitution is supported without modification.

Q: Are there differences in automotive qualification between these parts?

A: No. Both parts carry AEC-Q200 qualification, confirming compliance with automotive reliability standards. Both are suitable for automotive current sensing applications.

Q: What is the significance of the different base product numbers (SR73W2H vs. SR732H)?

A: The base product numbers indicate different internal product lines within the SR73 series. However, the complete part numbers (SR73W2HTTER100F and SR732HTTER100F) specify identical electrical and mechanical specifications, making them functionally equivalent for substitution purposes.

Q: Do these parts have the same moisture sensitivity rating?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity limitations during storage or handling. Standard component storage practices apply to both parts.

Q: Are the physical dimensions identical?

A: Yes. Both parts are packaged in the 2010 (5025 Metric) form factor with identical length (0.197" / 5.00mm), width (0.098" / 2.50mm), and maximum seated height (0.028" / 0.70mm). PCB footprints and assembly processes are interchangeable.

Q: What is the difference in available inventory?

A: The SR732HTTER100F has significantly higher inventory availability (10,692 pieces) compared to the SR73W2HTTER100F (766 pieces). For high-volume production or extended lead time requirements, the SR732HTTER100F may provide better supply chain flexibility.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and use.