RN732ATTD3902B10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3902B10 is a 39 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.1W (1/10W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and features moisture-resistant construction with a temperature coefficient of ±10ppm/°C.

The RN732ATTD3902B10 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production, repair, and maintenance applications.

Substiute Parts

RN732ATTD3902B10

KOA Speer Electronics, Inc.In Stock: 34147RN732ATTD3902B10 Datasheet

Current PartRFQ

RN73R2ATTD3902B10

KOA Speer Electronics, Inc.In Stock: 968RN73R2ATTD3902B10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3902B10 is determined by the following critical parameters:

Electrical Parameters:

• Resistance value: 39 kOhms (exact match required)
• Tolerance: ±0.1% (exact match required)
• Temperature coefficient: ±10ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (minimum requirement)

Mechanical Parameters:

• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Number of terminations: 2 (exact match required)

Power Rating Consideration:

• The substitute part may have equal or higher power rating than the original 0.1W specification, provided all other electrical and mechanical parameters remain identical.

Compliance Parameters:

• RoHS3 Compliant status required
• Moisture Sensitivity Level 1 (Unlimited) required

The RN73R2ATTD3902B10 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters while offering enhanced power rating (0.125W vs. 0.1W) and active product status with automotive AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD3902B10 is a direct functional equivalent to the obsolete RN732ATTD3902B10. Selection of this substitute part is supported by the following factors:

Product Status: The RN73R2ATTD3902B10 maintains Active product status, ensuring long-term availability and supply chain continuity compared to the Obsolete RN732ATTD3902B10.

Electrical Equivalence: Both parts share identical resistance value (39 kOhms), tolerance (±0.1%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). These parameters ensure electrical performance equivalence in circuit applications.

Mechanical Compatibility: Both parts utilize identical 0805 (2012 Metric) package dimensions and footprint, enabling direct board-level substitution without PCB redesign.

Power Rating Enhancement: The RN73R2ATTD3902B10 provides 0.125W (1/8W) power rating compared to the original 0.1W (1/10W) specification. This higher rating provides additional thermal margin in applications operating at or near the original power specification.

Compliance Certification: Both parts maintain ROHS3 Compliance and REACH Unaffected status. The RN73R2ATTD3902B10 additionally carries AEC-Q200 automotive qualification, indicating enhanced reliability screening and qualification for automotive-grade applications.

Thin Film Construction: Both parts employ thin film composition with moisture-resistant features and MSL 1 (Unlimited) rating, ensuring consistent performance in standard manufacturing and storage environments.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD3902B10 be used as a direct replacement for the RN732ATTD3902B10?

A: Yes. The RN73R2ATTD3902B10 is a direct substitute. Both parts share identical electrical specifications (39 kOhms ±0.1%, ±10ppm/°C), mechanical package (0805), and operating temperature range (-55°C ~ 155°C). 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 RN732ATTD3902B10 is rated for 0.1W (1/10W), while the RN73R2ATTD3902B10 is rated for 0.125W (1/8W). The higher power rating of the substitute provides additional thermal capacity without affecting electrical performance in circuits designed for the original 0.1W specification.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). Direct PCB footprint compatibility is confirmed.

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

A: AEC-Q200 is an automotive industry qualification standard indicating the RN73R2ATTD3902B10 has undergone enhanced reliability screening and qualification testing. This certification is applicable for automotive and high-reliability applications but does not affect compatibility in standard industrial or consumer applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD3902B10 and RN73R2ATTD3902B10 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both parts carry MSL 1 (Unlimited), indicating unlimited shelf life and no special moisture control requirements during storage, handling, or standard manufacturing processes.

Q: Why is the original part listed as Obsolete?

A: The RN732ATTD3902B10 carries Obsolete product status, indicating it is no longer in active production. The RN73R2ATTD3902B10 maintains Active status and is the recommended substitute for ongoing applications requiring this resistance value and specification.