Equivalent & Substitute Parts for RN732ATTD4021F100

Part Overview

The RN732ATTD4021F100 is a 4.02 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.1W (1/10W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. as part of the RN73 series and carries an Obsolete product status. Due to its obsolete classification, identifying equivalent substitute parts with compatible electrical and mechanical specifications is necessary for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD4021F100

KOA Speer Electronics, Inc.In Stock: 1060RN732ATTD4021F100 Datasheet

Current PartRFQ

RN73R2ATTD4021F100

KOA Speer Electronics, Inc.In Stock: 839RN73R2ATTD4021F100 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4021F100 is determined by the following critical parameters that must remain constant or be compatible:

Mandatory Matching Parameters:

• Resistance value: 4.02 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant feature

Compatible Variation Parameters:

• Power Rating: Substitute parts may have equal or higher power dissipation ratings
• Product Status: Active status preferred over Obsolete
• Certifications and compliance: Additional certifications (such as AEC-Q200) are acceptable enhancements

The RN73R2ATTD4021F100 qualifies as a direct substitute because it maintains all mandatory parameters while offering enhanced power rating (0.125W vs. 0.1W) and automotive qualification (AEC-Q200).

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4021F100 is the qualified substitute for the obsolete RN732ATTD4021F100. Selection is based on the following engineering criteria:

Product Status Transition: The main part carries Obsolete status, while the substitute maintains Active status, ensuring long-term availability and supply chain continuity.

Electrical Compatibility: Both parts maintain identical resistance (4.02 kOhms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's higher power rating (0.125W vs. 0.1W) provides additional thermal margin without affecting circuit performance.

Mechanical Compatibility: Both parts share identical 0805 (2012 Metric) package dimensions and physical characteristics, enabling direct PCB footprint compatibility.

Compliance and Certifications: Both parts are ROHS3 Compliant and REACH Unaffected. The substitute includes AEC-Q200 automotive qualification, which represents an enhancement for applications requiring automotive-grade reliability.

Moisture Resistance: Both parts feature moisture-resistant thin film construction with MSL 1 (Unlimited) rating, maintaining equivalent environmental performance.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4021F100 be used as a direct replacement for RN732ATTD4021F100?

A: Yes. Both parts maintain identical resistance value (4.02 kOhms), tolerance (±1%), package (0805), and temperature characteristics. The substitute's higher power rating (0.125W vs. 0.1W) is compatible with circuits designed for the original part.

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

A: The main part is rated at 0.1W (1/10W), while the substitute is rated at 0.125W (1/8W). The substitute's higher power dissipation capability does not affect compatibility in circuits designed for the original part.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.079" L x 0.049" W (2.00mm x 1.25mm) with a maximum seated height of 0.024" (0.60mm), ensuring identical PCB footprint compatibility.

Q: Does the substitute include additional certifications?

A: Yes. The RN73R2ATTD4021F100 includes AEC-Q200 automotive qualification in addition to standard ROHS3 compliance. This represents an enhancement for applications requiring automotive-grade reliability.

Q: What is the significance of the product status difference?

A: The main part is classified as Obsolete, while the substitute is Active. Active status ensures ongoing manufacturing, availability, and supply chain support for future procurement needs.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating identical moisture sensitivity classification and handling requirements.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Electrical, mechanical, and environmental specifications are compatible, enabling direct substitution in PCB designs and assemblies.