RN732ATTD1241F10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1241F10 is a 1.24 kOhms ±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 the temperature range of -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

RN732ATTD1241F10

KOA Speer Electronics, Inc.In Stock: 981RN732ATTD1241F10 Datasheet

Current PartRFQ

RN73R2ATTD1241F10

KOA Speer Electronics, Inc.In Stock: 943RN73R2ATTD1241F10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1241F10 is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.24 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Moisture Resistance: Required

Allowable Variation:

• Power Rating: Substitute parts may have equal or higher power dissipation rating (0.1W or greater)
• Product Status: Active status preferred for long-term availability
• Certifications: Additional certifications (such as AEC-Q200) do not disqualify a substitute

The RN73R2ATTD1241F10 meets all mandatory matching parameters and provides enhanced specifications through higher power rating (0.125W vs. 0.1W) and automotive qualification (AEC-Q200), making it a valid substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1241F10 is the direct substitute for the obsolete RN732ATTD1241F10. Selection of this substitute is supported by the following factors:

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

Electrical Equivalence: Both parts share identical resistance (1.24 kOhms), tolerance (±1%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C to 155°C). These parameters ensure functional interchangeability in circuit applications.

Power Rating Enhancement: The substitute provides 0.125W power rating versus the main part's 0.1W rating. This higher rating does not compromise circuit performance and provides additional thermal margin in applications operating near the original power specification.

Compliance and Certifications: Both parts maintain ROHS3 compliance and MSL 1 rating. The substitute adds AEC-Q200 automotive qualification, which does not restrict use in non-automotive applications and indicates enhanced reliability screening.

Package Compatibility: Identical 0805 (2012 Metric) package dimensions and termination configuration ensure direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1241F10 be used as a direct replacement for the RN732ATTD1241F10 without circuit redesign?

A: Yes. Both parts share identical electrical specifications (1.24 kOhms ±1%, ±10ppm/°C, -55°C to 155°C operating range) and package configuration (0805 2012 Metric). The substitute's higher power rating (0.125W vs. 0.1W) does not require circuit modification.

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

A: The RN73R2ATTD1241F10 is rated for 0.125W compared to the main part's 0.1W. This higher rating provides additional thermal headroom and does not affect circuit operation. Applications requiring only 0.1W dissipation remain fully compatible.

Q: Does the AEC-Q200 automotive qualification on the substitute part affect its use in non-automotive applications?

A: No. AEC-Q200 certification indicates enhanced reliability screening and quality standards. This certification does not restrict the part's use in non-automotive applications and represents an improvement in component reliability.

Q: Are the physical dimensions and PCB footprints identical between the two parts?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and maximum seated height (0.024" / 0.60mm). No PCB layout changes are required.

Q: What is the inventory status for the substitute part?

A: The RN73R2ATTD1241F10 is in active production with 891 pieces currently in stock as new original inventory, ensuring immediate availability for procurement.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD1241F10 and RN73R2ATTD1241F10 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.