RN732ATTD4021F10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4021F10 is a 4.02 kOhms ±1% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component features moisture-resistant construction with a temperature coefficient of ±10ppm/°C and operates across the temperature range of -55°C to 155°C.

The RN732ATTD4021F10 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for applications utilizing this resistor specification.

Substiute Parts

RN732ATTD4021F10

KOA Speer Electronics, Inc.In Stock: 975RN732ATTD4021F10 Datasheet

Current PartRFQ

RN73R2ATTD4021F10

KOA Speer Electronics, Inc.In Stock: 975RN73R2ATTD4021F10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4021F10 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.02 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Moisture Resistant feature

Allowable Variation:

• Power rating may be equal to or greater than 0.1W, provided the physical dimensions remain compatible with the 0805 package footprint
• Product status may differ (active vs. obsolete)
• Packaging format may vary (bulk vs. Tape & Reel)
• Additional certifications (such as AEC-Q200) do not disqualify a substitute

The RN73R2ATTD4021F10 meets all mandatory matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4021F10 is a direct substitute for the RN732ATTD4021F10 based on electrical and mechanical equivalence. The substitute part offers the following advantages:

Product Status: The RN73R2ATTD4021F10 maintains active product status, ensuring continued availability and supply chain support, whereas the main part is classified as obsolete.

Power Rating Enhancement: The substitute part is rated at 0.125W (1/8W), which exceeds the 0.1W (1/10W) rating of the main part. This higher power rating provides additional thermal margin without affecting circuit performance in applications designed for the original 0.1W specification.

Automotive Certification: The RN73R2ATTD4021F10 carries AEC-Q200 automotive qualification, providing enhanced reliability documentation for applications requiring automotive-grade components.

Compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels (MSL 1 - Unlimited), ensuring regulatory and environmental compatibility.

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

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4021F10 be used as a direct replacement for the RN732ATTD4021F10 without circuit redesign?

A: Yes. The RN73R2ATTD4021F10 is electrically and mechanically equivalent. Identical resistance (4.02 kOhms), tolerance (±1%), temperature coefficient (±10ppm/°C), operating temperature range (-55°C to 155°C), and package dimensions (0805 / 2012 Metric) ensure direct substitution without circuit modification.

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

A: The higher power rating on the RN73R2ATTD4021F10 provides additional thermal dissipation capability. In applications designed for 0.1W operation, the substitute part operates with greater thermal margin, reducing junction temperature and extending component life. This does not affect circuit performance.

Q: Are there packaging differences between the main part and substitute?

A: The main part (RN732ATTD4021F10) is supplied in standard packaging, while the substitute (RN73R2ATTD4021F10) is available in Tape & Reel (TR) format. Both use identical 0805 (2012 Metric) package geometry. Tape & Reel packaging is standard for automated assembly processes.

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

A: No. AEC-Q200 certification indicates enhanced reliability testing and qualification. This certification does not restrict use in non-automotive applications; it only confirms that the part meets automotive industry reliability standards.

Q: Are the RoHS and REACH compliance statuses identical between the two parts?

A: Yes. Both the RN732ATTD4021F10 and RN73R2ATTD4021F10 are ROHS3 compliant and REACH unaffected, ensuring equivalent environmental and regulatory compliance.

Q: What is the moisture sensitivity level, and does it differ between the parts?

A: Both parts carry Moisture Sensitivity Level (MSL) 1, classified as unlimited. This indicates the components require no special moisture control during storage, handling, or assembly, providing equivalent moisture management requirements.