RN732ATTD1271C10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1271C10 is a 1.27 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 RN732ATTD1271C10 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

RN732ATTD1271C10

KOA Speer Electronics, Inc.In Stock: 713RN732ATTD1271C10 Datasheet

Current PartRFQ

RN73R2ATTD1271C10

KOA Speer Electronics, Inc.In Stock: 1145RN73R2ATTD1271C10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD1271C10 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.27 kOhms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°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 for obsolete parts
• Packaging Format: May differ (Tape & Reel acceptable as alternative to standard packaging)
• Certifications: Additional certifications (such as AEC-Q200) are permissible

The RN73R2ATTD1271C10 qualifies as a direct substitute based on matching all mandatory parameters while offering enhanced power rating (0.125W vs. 0.1W) and automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1271C10 is the qualified substitute for the obsolete RN732ATTD1271C10. Selection is based on the following engineering criteria:

Product Status Consideration: The RN732ATTD1271C10 is classified as Obsolete, creating supply chain risk. The RN73R2ATTD1271C10 maintains Active product status, ensuring long-term availability and continued manufacturing support.

Electrical Equivalence: Both parts maintain identical resistance (1.27 kOhms), tolerance (±0.25%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). Electrical performance in circuit applications is equivalent.

Power Rating Enhancement: The substitute part provides 0.125W power rating compared to the original 0.1W specification. This represents a 25% increase in power dissipation capability, which is compatible with applications designed for the original part and provides additional thermal margin.

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

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

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1271C10 be used as a direct replacement for the RN732ATTD1271C10?

A: Yes. The RN73R2ATTD1271C10 qualifies as a direct substitute. Both parts share identical resistance value, tolerance, package format, temperature coefficient, and operating temperature range. The substitute part provides equal or superior electrical performance.

Q: What is the significance of the higher power rating (0.125W vs. 0.1W) in the substitute part?

A: The increased power rating indicates higher thermal dissipation capability. For applications operating at or below the original 0.1W specification, this provides additional thermal margin and reliability. The substitute part remains fully compatible with designs specified for 0.1W operation.

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

A: No. AEC-Q200 qualification represents an additional quality and reliability standard. Parts meeting automotive standards are suitable for general industrial and commercial applications without restriction.

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 of 0.024" (0.60mm). No PCB layout modifications are required.

Q: What is the difference between the packaging formats listed?

A: The main part (RN732ATTD1271C10) uses standard packaging, while the substitute (RN73R2ATTD1271C10) is supplied in Tape & Reel (TR) format. Both formats contain identical components; packaging format selection depends on assembly process requirements and order quantity.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD1271C10 and RN73R2ATTD1271C10 maintain ROHS3 compliance status, meeting environmental and regulatory requirements for electronic component manufacturing and use.