RN732ATTD1241C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1241C50 is a 1.24 kOhms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0805 (2012 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across -55°C to 155°C temperature range.

The RN732ATTD1241C50 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistor specification.

Substiute Parts

RN732ATTD1241C50

KOA Speer Electronics, Inc.In Stock: 803RN732ATTD1241C50 Datasheet

Current PartRFQ

RN73R2ATTD1241C50

KOA Speer Electronics, Inc.In Stock: 975RN73R2ATTD1241C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD1241C50 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.24 kOhms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant construction

Allowable Variation Parameters:

• Power Rating: Substitute parts may have equal or higher power rating (0.1W or greater)
• Product Status: Active status preferred over Obsolete
• Certifications and compliance: Additional certifications (such as AEC-Q200) do not disqualify substitution

The RN73R2ATTD1241C50 qualifies as a direct substitute based on matching all mandatory parameters while offering enhanced power rating (0.125W vs. 0.1W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1241C50 is the qualified substitute for the obsolete RN732ATTD1241C50. Selection is based on the following engineering criteria:

Product Status Consideration: The RN732ATTD1241C50 is classified as Obsolete, creating supply chain risk. The RN73R2ATTD1241C50 maintains Active product status, ensuring long-term availability and continued manufacturer support.

Electrical Equivalence: Both parts maintain identical resistance (1.24 kOhms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute provides higher power rating (0.125W vs. 0.1W), which is compatible with applications designed for the original 0.1W specification.

Compliance and Certifications: Both parts are ROHS3 Compliant and REACH Unaffected. The RN73R2ATTD1241C50 includes AEC-Q200 automotive qualification, providing additional reliability assurance without introducing incompatibility.

Physical Compatibility: Identical package dimensions (0805 / 2012 Metric), footprint, and height ensure direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1241C50 be used as a direct replacement for the RN732ATTD1241C50?

A: Yes. The RN73R2ATTD1241C50 is electrically and mechanically equivalent. Both parts share identical resistance value, tolerance, package format, and operating temperature range. The substitute offers higher power rating (0.125W vs. 0.1W), which is compatible with designs specified for 0.1W operation.

Q: What is the difference in power rating between these parts?

A: The RN732ATTD1241C50 is rated for 0.1W (1/10W), while the RN73R2ATTD1241C50 is rated for 0.125W (1/8W). The substitute's higher power rating does not affect compatibility; it provides additional thermal margin for the same electrical application.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints are identical.

Q: Does the AEC-Q200 certification on the substitute part affect compatibility?

A: No. AEC-Q200 is an automotive qualification standard that indicates enhanced reliability testing. Its presence on the substitute part does not introduce incompatibility; it provides additional assurance for applications requiring automotive-grade components.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD1241C50 and RN73R2ATTD1241C50 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the packaging difference between these parts?

A: The RN732ATTD1241C50 packaging is not specified in the provided data. The RN73R2ATTD1241C50 is supplied in Tape & Reel (TR) format. Confirm packaging requirements for your procurement process.