SR732HTTER680F Equivalent & Substitute Parts

Part Overview

The SR732HTTER680F 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 requiring AEC-Q200 compliance. The component features a 680 milliohm resistance value with ±1% tolerance and 0.75W power rating in a compact 2010 (5025 Metric) surface mount package. The part is actively produced and maintained in inventory, with moisture-resistant construction suitable for demanding automotive environments. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and inventory optimization for applications where the primary part number may be unavailable or where alternative sourcing is required.

Substiute Parts

SR732HTTER680F

KOA Speer Electronics, Inc.In Stock: 922SR732HTTER680F Datasheet

Current PartRFQ

SR73W2HTTER680F

KOA Speer Electronics, Inc.In Stock: 5104SR73W2HTTER680F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SR732HTTER680F is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part SR73W2HTTER680F maintains identical specifications in the following key areas:

Electrical Parameters (Must Match Exactly):

• Resistance value: 680 mOhms
• Tolerance: ±1%
• Power rating: 0.75W
• Temperature coefficient: ±100 ppm/°C
• Operating temperature range: -55°C to +150°C

Mechanical Parameters (Must Match Exactly):

• Package type: 2010 (5025 Metric)
• Physical dimensions: 0.197" L × 0.098" W (5.00mm × 2.50mm)
• Maximum seated height: 0.028" (0.70mm)
• Number of terminations: 2

Compliance & Environmental Parameters (Must Match Exactly):

• Automotive AEC-Q200 rating
• Thick film composition
• Moisture-resistant construction
• Moisture Sensitivity Level: MSL 1
• RoHS3 compliance
• REACH unaffected status

The substitute part is qualified as a direct equivalent because all parameters remain unchanged from the primary part number. Both parts are manufactured by the same supplier and belong to the same SR73 series.

Parameter Comparison

Engineering Selection Recommendations

Both the SR732HTTER680F and SR73W2HTTER680F are qualified for direct substitution in automotive current sensing applications. Selection between these parts should be based on the following factors:

Supply Chain Availability: The SR73W2HTTER680F maintains higher inventory levels (5086 pieces) compared to the SR732HTTER680F (849 pieces), making it the preferred choice for high-volume production or when extended lead times must be minimized.

Compliance & Certification: Both parts maintain identical AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status. Either part satisfies automotive system requirements without additional qualification or testing.

Packaging & Logistics: Both parts are supplied in Tape & Reel (TR) packaging with identical physical dimensions and termination configuration. No PCB layout modifications or assembly process changes are required when substituting between these part numbers.

Product Lifecycle: Both parts carry Active product status from the manufacturer, ensuring continued availability and support throughout the design lifecycle.

Frequently Asked Questions (FAQ)

Q: Can SR73W2HTTER680F be used as a direct replacement for SR732HTTER680F in production?

A: Yes. Both parts are electrically and mechanically identical with matching resistance values (680 mOhms), tolerance (±1%), power rating (0.75W), temperature coefficient (±100 ppm/°C), operating range (-55°C to +150°C), and package type (2010 Metric). No circuit modifications or PCB redesign is required.

Q: Are there any differences in automotive compliance between these two part numbers?

A: No. Both parts carry identical AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status. They are equally suitable for automotive applications requiring these certifications.

Q: What is the difference between SR732HTTER680F and SR73W2HTTER680F?

A: The primary difference is the base product number designation (SR732H versus SR73W2H). Both parts are manufactured by KOA Speer Electronics within the SR73 series and share identical electrical specifications, mechanical dimensions, and compliance ratings. The variation in part number reflects internal manufacturer product line differentiation but does not affect functional performance or compatibility.

Q: Can these parts be mixed in the same production batch?

A: Yes. Since both parts are electrically and mechanically identical with matching specifications and certifications, they can be used interchangeably within the same assembly without affecting circuit performance or reliability.

Q: What is the moisture sensitivity level for both parts?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special desiccant or controlled humidity requirements.

Q: Are there any thermal performance differences between these resistors?

A: No. Both parts maintain identical temperature coefficient (±100 ppm/°C) and operating temperature range (-55°C to +150°C). Thermal performance in current sensing applications is equivalent.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection may be based on supplier inventory availability, lead time requirements, or existing supply chain relationships. The SR73W2HTTER680F currently maintains higher stock levels, which may provide supply chain advantages for high-volume production.