RN732ATTD2802C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD2802C50 is a 28 kOhms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0805 (2012 Metric) package format with 0.1W power rating. This component is classified as Obsolete product status. Due to obsolescence, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure supply chain availability for new production runs and field replacements.

Substiute Parts

RN732ATTD2802C50

KOA Speer Electronics, Inc.In Stock: 755RN732ATTD2802C50 Datasheet

Current PartRFQ

RN73R2ATTD2802C50

KOA Speer Electronics, Inc.In Stock: 894RN73R2ATTD2802C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD2802C50 is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 28 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 feature

Allowable Variation Parameters:

• Power Rating: May be equal or higher than 0.1W
• Product Status: Active status preferred over Obsolete
• Certifications and Features: May include additional qualifications (e.g., AEC-Q200 automotive rating)

The RN73R2ATTD2802C50 qualifies as a direct substitute based on these criteria. It maintains all mandatory electrical and mechanical parameters while offering higher power rating (0.125W vs 0.1W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD2802C50 is the direct substitute for the obsolete RN732ATTD2802C50. Selection is based on the following engineering criteria:

Product Status Consideration: The RN732ATTD2802C50 is classified as Obsolete, making long-term supply unavailable. The RN73R2ATTD2802C50 maintains Active product status, ensuring continued availability and manufacturing support.

Electrical Equivalence: Both parts maintain identical resistance (28 kOhms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). These parameters ensure functional interchangeability in circuit applications.

Power Rating: The substitute part offers 0.125W power rating compared to the main part's 0.1W rating. This higher rating provides additional thermal margin without affecting circuit performance in applications designed for 0.1W dissipation.

Compliance and Certifications: Both parts are ROHS3 Compliant and REACH Unaffected. The substitute part includes AEC-Q200 automotive qualification, providing enhanced reliability documentation for applications requiring automotive-grade components.

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 RN73R2ATTD2802C50 be used as a direct replacement for RN732ATTD2802C50?

A: Yes. The RN73R2ATTD2802C50 is a direct substitute. Both parts share identical resistance value, tolerance, package format, and operating temperature range. The substitute offers higher power rating (0.125W vs 0.1W) and active product status.

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

A: The main part RN732ATTD2802C50 is rated at 0.1W (1/10W), while the substitute RN73R2ATTD2802C50 is rated at 0.125W (1/8W). The higher rating in the substitute provides additional thermal capacity and does not affect compatibility in circuits designed for 0.1W operation.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical 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 interchangeable without modification.

Q: What is the significance of AEC-Q200 qualification on the substitute part?

A: AEC-Q200 is an automotive industry qualification standard. The RN73R2ATTD2802C50 includes this certification, indicating compliance with automotive reliability and quality requirements. This does not restrict use in non-automotive applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD2802C50 and RN73R2ATTD2802C50 are ROHS3 Compliant and REACH Unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: Why is the main part listed as Obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production of the RN732ATTD2802C50. The RN73R2ATTD2802C50 is the active equivalent, ensuring continued supply and manufacturing support for new designs and field replacements.