RN732ATTD4021C10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4021C10 is a 4.02 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 features moisture-resistant construction and operates across the temperature range of -55°C to 155°C.

The RN732ATTD4021C10 is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design flexibility permits the use of active production alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

RN732ATTD4021C10

KOA Speer Electronics, Inc.In Stock: 964RN732ATTD4021C10 Datasheet

Current PartRFQ

RN73R2ATTD4021C10

KOA Speer Electronics, Inc.In Stock: 1133RN73R2ATTD4021C10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4021C10 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Resistance value: 4.02 kOhms (exact match required)
• Tolerance: ±0.25% (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Temperature Coefficient: ±10ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C (exact match required)

Allowable Parameter Variations:

• Power Rating: May be equal to or greater than 0.1W
• Features: May include additional certifications or qualifications (such as AEC-Q200 automotive qualification)
• Product Status: Active production alternatives are acceptable

The substitute part RN73R2ATTD4021C10 meets all critical parameters and exceeds the power rating specification, making it a valid substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4021C10 serves as a direct substitute for the obsolete RN732ATTD4021C10 based on the following engineering criteria:

Electrical Compatibility: Both components share identical resistance value (4.02 kOhms), tolerance (±0.25%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C to 155°C). The substitute part exceeds the power rating requirement, providing 0.125W versus the original 0.1W specification.

Mechanical Compatibility: Both components utilize the 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W) and maximum seated height (0.024"). Direct board-level substitution is supported without layout modifications.

Compliance Status: The RN73R2ATTD4021C10 maintains ROHS3 compliance and MSL 1 rating identical to the original part. The addition of AEC-Q200 automotive qualification in the substitute part represents an enhancement rather than a deviation from the original specification.

Product Availability: The substitute part is in active production status with confirmed inventory availability, addressing the obsolescence constraint of the original component.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4021C10 be used as a direct replacement for the RN732ATTD4021C10 in existing designs?

A: Yes. The substitute part maintains identical electrical parameters (resistance, tolerance, temperature coefficient, operating temperature range) and mechanical dimensions (0805 package, physical size, height). No circuit redesign or board layout modification is required.

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

A: The increased power rating in the RN73R2ATTD4021C10 provides additional thermal margin without affecting electrical performance. This represents a specification enhancement that does not compromise compatibility with designs rated for the original 0.1W component.

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

A: No. AEC-Q200 qualification represents an additional quality and reliability certification. Components 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 components are packaged in 0805 (2012 Metric) format with identical dimensions (0.079" L x 0.049" W) and maximum seated height (0.024"). PCB footprints are interchangeable.

Q: What is the packaging difference between the main part and substitute?

A: The RN732ATTD4021C10 packaging format is not specified in the provided data. The RN73R2ATTD4021C10 is supplied in Tape & Reel (TR) format. Verify packaging requirements for your procurement and assembly process.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD4021C10 and RN73R2ATTD4021C10 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.