RN732ATTD4021F50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4021F50 is a 4.02 kOhms ±1% 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 -55°C to 155°C temperature range.

The RN732ATTD4021F50 is classified as Obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when design requirements permit alternative specifications that maintain functional compatibility within the circuit application.

Substiute Parts

RN732ATTD4021F50

KOA Speer Electronics, Inc.In Stock: 1192RN732ATTD4021F50 Datasheet

Current PartRFQ

RN73R2ATTD4021F50

KOA Speer Electronics, Inc.In Stock: 910RN73R2ATTD4021F50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4021F50 is determined by strict equivalence in the following parameters:

Critical Parameters (Must Match):

• Resistance Value: 4.02 kOhms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C

Allowable Variation Parameters:

• Power Rating: May be equal to or greater than 0.1W
• Features: May include additional certifications or enhancements (e.g., Automotive AEC-Q200)
• Product Status: Active status preferred over Obsolete

The RN73R2ATTD4021F50 qualifies as a direct substitute based on matching all critical parameters while offering increased power rating (0.125W vs. 0.1W) and additional automotive qualification (AEC-Q200).

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4021F50 is a direct functional substitute for the RN732ATTD4021F50 in applications requiring 4.02 kOhms ±1% thin film resistors in 0805 package format.

Substitution Basis:

The RN73R2ATTD4021F50 maintains electrical equivalence through identical resistance value, tolerance, temperature coefficient, and operating temperature range. Physical compatibility is confirmed by matching package dimensions and termination count. Both components satisfy ROHS3 compliance and REACH requirements.

Advantages of RN73R2ATTD4021F50:

The substitute part offers increased power dissipation capability (0.125W vs. 0.1W), providing additional thermal margin in circuit operation. The component carries Active product status, ensuring continued availability and supply chain stability. Automotive AEC-Q200 qualification provides enhanced reliability documentation for applications requiring automotive-grade component specifications.

Selection Criteria:

Choose RN73R2ATTD4021F50 when the circuit design permits the higher power rating and when active product status with automotive qualification is beneficial. The substitute part is suitable for direct replacement in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4021F50 replace RN732ATTD4021F50 in existing circuit designs?

A: Yes. The RN73R2ATTD4021F50 provides direct functional substitution. Identical resistance value, tolerance, temperature coefficient, and operating temperature range ensure electrical compatibility. Matching 0805 package dimensions and termination configuration confirm physical compatibility without PCB redesign.

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

A: The RN732ATTD4021F50 is rated at 0.1W (1/10W), while the RN73R2ATTD4021F50 is rated at 0.125W (1/8W). The substitute part has 25% higher power dissipation capability. In applications operating below the original 0.1W specification, this increased rating provides additional thermal margin without affecting circuit performance.

Q: Are there packaging differences between these parts?

A: Both components use identical 0805 (2012 Metric) package format with matching dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm) and maximum seated height (0.024" / 0.60mm). Packaging is interchangeable for PCB assembly and placement.

Q: Why is the original part listed as Obsolete?

A: The RN732ATTD4021F50 carries Obsolete status, indicating discontinued manufacturing. The RN73R2ATTD4021F50 maintains Active status with current production and availability. Substitution ensures access to equivalent components from the same manufacturer.

Q: Does the AEC-Q200 qualification on the substitute part affect compatibility?

A: No. AEC-Q200 is an automotive reliability qualification that represents an enhancement to the substitute part's specification. This certification does not create incompatibility; it provides additional quality assurance documentation. The substitute part remains fully compatible with applications not requiring automotive qualification.

Q: Are the RoHS and REACH compliance statuses identical?

A: Yes. Both components are ROHS3 Compliant and REACH Unaffected, confirming equivalent environmental and regulatory compliance.