SR73W3ATTER130F Equivalent & Substitute Parts

Part Overview

The SR73W3ATTER130F 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 qualification. The component delivers 130 milliohms resistance at ±1% tolerance with 1 watt power dissipation capability in a 2512 (6432 Metric) package format. The part is actively produced and maintained in inventory, with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when original stock becomes unavailable, when supply chain constraints occur, or when design flexibility permits equivalent component selection within the same electrical and mechanical specifications.

Substiute Parts

SR73W3ATTER130F

KOA Speer Electronics, Inc.In Stock: 832SR73W3ATTER130F Datasheet

Current PartRFQ

SR733ATTER130F

KOA Speer Electronics, Inc.In Stock: 4940SR733ATTER130F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SR73W3ATTER130F is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part SR733ATTER130F qualifies as a direct equivalent based on the following matching criteria:

Electrical Parameters (Must Match Exactly):

• Resistance: 130 mOhms
• Tolerance: ±1%
• Power Rating: 1W
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 150°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: 2512 (6432 Metric)
• Physical Dimensions: 0.248" L x 0.122" W (6.30mm x 3.10mm)
• Height - Seated (Max): 0.028" (0.70mm)
• Number of Terminations: 2

Compliance & Certification (Must Match Exactly):

• Automotive Rating: AEC-Q200
• Composition: Thick Film
• Features: Current Sense, Moisture Resistant
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: MSL 1 (Unlimited)

Both parts belong to the KOA Speer Electronics SR73 series and share identical base product specifications with only minor manufacturing code variations in the part number designation.

Parameter Comparison

Engineering Selection Recommendations

The SR733ATTER130F serves as a direct functional and mechanical equivalent to the SR73W3ATTER130F. Both components are actively manufactured by KOA Speer Electronics and maintain identical electrical specifications, package geometry, and automotive compliance certifications. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

Compliance Verification: Both parts satisfy AEC-Q200 automotive qualification requirements and maintain ROHS3 compliance status. The MSL 1 (Unlimited) moisture sensitivity rating applies to both components, eliminating moisture-related handling constraints. REACH unaffected status is consistent across both part numbers.

Application Suitability: The SR73W3ATTER130F and SR733ATTER130F are suitable for identical current sensing applications in automotive systems. The 130 milliohm resistance value with ±1% tolerance and ±100ppm/°C temperature coefficient provides precision measurement capability across the -55°C to 150°C operating range. The 1 watt power dissipation rating accommodates standard automotive current sensing circuit designs.

Substitution Clearance: Direct substitution of SR733ATTER130F for SR73W3ATTER130F is permissible without circuit redesign, PCB layout modification, or thermal management recalculation. No derating analysis is required. Both components utilize identical 2512 (6432 Metric) package footprints with matching lead termination specifications.

Frequently Asked Questions (FAQ)

Q: Can SR733ATTER130F be used as a direct replacement for SR73W3ATTER130F in automotive applications?

A: Yes. Both parts are electrically and mechanically identical with matching AEC-Q200 automotive ratings, identical resistance values (130 mOhms ±1%), identical power ratings (1W), and identical package specifications (2512 / 6432 Metric). No circuit modifications are required.

Q: Are there any differences in the physical package dimensions between these two parts?

A: No. Both components share identical package dimensions: 0.248" length × 0.122" width (6.30mm × 3.10mm) with maximum seated height of 0.028" (0.70mm). PCB footprints are interchangeable.

Q: Do both parts meet the same automotive compliance standards?

A: Yes. Both SR73W3ATTER130F and SR733ATTER130F carry AEC-Q200 qualification. Both are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is MSL 1 (Unlimited) for both parts.

Q: What is the temperature coefficient specification for these current sense resistors?

A: Both parts specify ±100ppm/°C temperature coefficient across the -55°C to 150°C operating range. This specification is identical for both the main part and substitute.

Q: Are these parts available in the same packaging format?

A: Yes. Both SR73W3ATTER130F and SR733ATTER130F are supplied in Tape & Reel (TR) packaging format suitable for automated assembly processes.

Q: What tolerance specification applies to the 130 milliohm resistance value?

A: Both parts maintain ±1% tolerance on the 130 milliohm resistance specification. This tolerance is maintained across the full operating temperature range.

Q: Can these parts be used interchangeably in high-reliability automotive systems?

A: Yes. Both parts are actively produced, carry identical AEC-Q200 ratings, and maintain identical electrical and mechanical specifications. Interchangeability is confirmed for high-reliability applications.

Q: Is there any difference in the composition or construction between these two resistor types?

A: No. Both parts utilize thick film composition with identical moisture-resistant characteristics. Construction methodology and material composition are equivalent.