RN732ATTD1111B10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1111B10 is a 1.11 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction and operates across -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD1111B10

KOA Speer Electronics, Inc.In Stock: 1029RN732ATTD1111B10 Datasheet

Current PartRFQ

RN73R2ATTD1111B10

KOA Speer Electronics, Inc.In Stock: 1238RN73R2ATTD1111B10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD1111B10 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.11 kOhms
• Tolerance: ±0.1%
• Package type: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±10ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture resistance capability

Allowable Variation:

• Power rating: The substitute part may have equal or higher power dissipation rating than the original 0.1W specification, provided all other electrical and mechanical parameters remain unchanged.

The RN73R2ATTD1111B10 qualifies as a direct substitute based on these criteria. It maintains identical resistance, tolerance, package, composition, temperature coefficient, and operating range. The power rating increases from 0.1W to 0.125W (1/8W), which represents an upward-compatible specification. The substitute part is active in production status and includes automotive AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1111B10 is the qualified substitute for the obsolete RN732ATTD1111B10. Selection is based on the following engineering factors:

Product Status: The substitute part is active in production, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Electrical Compatibility: All critical electrical parameters—resistance value, tolerance, temperature coefficient, and operating temperature range—are identical between the main and substitute parts. The increased power rating (0.125W versus 0.1W) provides enhanced thermal margin without affecting circuit performance.

Mechanical Compatibility: Package dimensions, footprint, and termination count are identical, enabling direct PCB layout compatibility without redesign.

Compliance and Certifications: Both parts maintain ROHS3 compliance and MSL 1 rating. The substitute part includes AEC-Q200 automotive qualification, which provides additional quality assurance and reliability documentation.

Packaging Consideration: The substitute part is supplied in Tape & Reel (TR) format, which may differ from the main part's original packaging. Verify packaging requirements for your procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1111B10 be used as a direct replacement for the RN732ATTD1111B10 in existing designs?

A: Yes. The substitute part maintains identical electrical specifications (1.11 kOhms ±0.1%, ±10ppm/°C temperature coefficient) and mechanical compatibility (0805 package, identical dimensions). The increased power rating (0.125W versus 0.1W) is an upward-compatible specification that does not affect circuit operation.

Q: What is the significance of the higher power rating in the substitute part?

A: The RN73R2ATTD1111B10 is rated for 0.125W compared to the original 0.1W rating. This represents a 25% increase in power dissipation capability. In applications where the original part operated at or near its power limit, the substitute provides additional thermal margin and improved reliability.

Q: Are there any differences in temperature performance between the two parts?

A: No. Both parts operate across -55°C to 155°C with identical ±10ppm/°C temperature coefficient. Temperature-dependent resistance drift will be equivalent.

Q: What does AEC-Q200 qualification mean for the substitute part?

A: AEC-Q200 is an automotive industry standard qualification that certifies component reliability under automotive operating conditions. While the main part does not list this qualification, the substitute part's AEC-Q200 status indicates it has undergone additional reliability testing and quality assurance protocols.

Q: Are the packaging formats compatible?

A: Both parts use 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W, 0.024" max height). The substitute part is supplied in Tape & Reel format. Verify that your assembly process and equipment are compatible with this packaging format.

Q: Is the substitute part RoHS compliant?

A: Yes. The RN73R2ATTD1111B10 is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original part.

Q: Can I use the substitute part in new designs?

A: Yes. The substitute part is active in production status, making it suitable for both replacement applications and new design implementations. Its active status ensures ongoing availability and supply chain support.