SR731HTTC100J Equivalent & Substitute Parts

Part Overview

The SR731HTTC100J is a 10 Ohms ±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 The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for existing applications or legacy system support.

Substiute Parts

SR731HTTC100J

KOA Speer Electronics, Inc.In Stock: 719SR731HTTC100J Datasheet

Current PartRFQ

SR731HTTCM100J

KOA Speer Electronics, Inc.In Stock: 943SR731HTTCM100J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SR731HTTC100J is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters:

• Resistance value: 10 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)
• Composition: Thick Film
• Number of terminations: 2

Compliance & Certification:

• Automotive qualification: AEC-Q200
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts must match all electrical parameters, mechanical specifications, and compliance certifications. Application-specific features such as current sensing capability and moisture resistance are required attributes for valid substitution.

Parameter Comparison

Engineering Selection Recommendations

The SR731HTTCM100J is the direct equivalent substitute for the SR731HTTC100J. Both parts are manufactured by KOA Speer Electronics, Inc. and share identical electrical specifications, mechanical dimensions, and compliance certifications. The primary distinction is product status: the SR731HTTC100J is designated "Not For New Designs," while the SR731HTTCM100J maintains "Active" status in the manufacturer's current product portfolio.

For applications currently using the SR731HTTC100J, the SR731HTTCM100J provides full functional and physical compatibility. Both components satisfy AEC-Q200 automotive qualification requirements and ROHS3 compliance. The substitute part maintains the same 10 Ohms resistance, ±5% tolerance, 0.1W power rating, and 0201 package specification. Temperature coefficient and operating temperature range are identical across both parts.

Selection of the SR731HTTCM100J is appropriate for continued production support and design updates, as it represents the active equivalent within the KOA Speer SR73 series.

Frequently Asked Questions (FAQ)

Q: Can the SR731HTTCM100J be used as a direct replacement for the SR731HTTC100J?

A: Yes. Both parts are electrically and mechanically identical. They share the same 10 Ohms resistance, ±5% tolerance, 0.1W power rating, 0201 package dimensions, and AEC-Q200 automotive qualification. Physical substitution is direct with no circuit modifications required.

Q: What is the difference between SR731HTTC100J and SR731HTTCM100J?

A: The primary difference is product lifecycle status. The SR731HTTC100J is classified "Not For New Designs," indicating it has been superseded. The SR731HTTCM100J is the active equivalent with identical electrical and mechanical specifications. Both parts are manufactured by KOA Speer Electronics, Inc.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the SR731HTTC100J and SR731HTTCM100J meet AEC-Q200 automotive qualification standards and are rated for operating temperatures from -55°C to 125°C. Both are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Does the 0201 package dimension apply to both parts?

A: Yes. Both parts use the 0201 (0603 Metric) package with identical physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm).

Q: Are there any feature differences between the two parts?

A: The SR731HTTC100J lists "Moisture Resistant" as an explicit feature, while the SR731HTTCM100J does not. However, both parts carry MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent moisture handling capability. Both are specified for current sensing applications.

Q: What is the tolerance specification for these resistors?

A: Both parts carry ±5% tolerance on the 10 Ohms nominal resistance value. This tolerance applies across the full operating temperature range of -55°C to 125°C.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. The identical 0201 package specification, footprint dimensions, and termination configuration (2 terminations) ensure direct PCB assembly compatibility. No layout or design modifications are necessary.