Equivalent & Substitute Parts for RN732ATTD3973F25

Part Overview

The RN732ATTD3973F25 is a 397 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts with matching or enhanced electrical and mechanical specifications are necessary for design continuity and procurement flexibility.

Substiute Parts

RN732ATTD3973F25

KOA Speer Electronics, Inc.In Stock: 807RN732ATTD3973F25 Datasheet

Current PartRFQ

RN73R2ATTD3973F25

KOA Speer Electronics, Inc.In Stock: 1138RN73R2ATTD3973F25 Datasheet

DirectRFQ

PHP00805E3973BBT1

Vishay Dale Thin FilmIn Stock: 1034PHP00805E3973BBT1 Datasheet

UpgradeRFQ

RT0805BRD07397KL

YAGEOIn Stock: 1024RT0805BRD07397KL Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Resistance Value: Must be 397 kOhms
• Package / Case: Must be 0805 (2012 Metric)
• Composition: Must be Thin Film
• Temperature Coefficient: Must be ±25ppm/°C
• Operating Temperature Range: Must support -55°C ~ 155°C
• Moisture Sensitivity Level: Must be 1 (Unlimited)

Substitute parts are grouped into two categories:

Direct Substitute (Equivalent): RN73R2ATTD3973F25 maintains identical electrical specifications with enhanced power rating (0.125W vs 0.1W) and active product status with automotive qualification.

Upgrade Substitutes: RT0805BRD07397KL and PHP00805E3973BBT1 provide improved tolerance (±0.1% vs ±1%) and higher power ratings while maintaining core electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD3973F25 is the recommended direct substitute. It maintains identical electrical specifications to the RN732ATTD3973F25 while offering active product status, higher power rating margin (0.125W vs 0.1W), and automotive AEC-Q200 qualification. Both parts are ROHS3 compliant and share identical package dimensions and thermal characteristics.

RT0805BRD07397KL is suitable for applications requiring improved tolerance performance (±0.1% vs ±1%). This YAGEO component maintains ROHS3 compliance and active product status with equivalent package and thermal specifications.

PHP00805E3973BBT1 provides the highest power rating (0.63W) and tightest tolerance (±0.1%) among available substitutes. However, this Vishay Dale component is RoHS non-compliant and should be selected only when RoHS compliance is not a design requirement. The increased physical height (0.033" vs 0.024") must be verified for PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD3973F25 be used as a direct replacement for RN732ATTD3973F25?

A: Yes. Both parts share identical resistance (397 kOhms), tolerance (±1%), package (0805), composition (thin film), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C). RN73R2ATTD3973F25 offers higher power rating (0.125W vs 0.1W) and active product status.

Q: What is the difference between the direct substitute and upgrade substitutes?

A: RN73R2ATTD3973F25 maintains the original ±1% tolerance specification. RT0805BRD07397KL and PHP00805E3973BBT1 offer improved ±0.1% tolerance for applications requiring tighter resistance accuracy. Both upgrade options provide higher power ratings.

Q: Are all substitute parts compatible with the original PCB layout?

A: RN73R2ATTD3973F25 and RT0805BRD07397KL have identical package dimensions (0.079" L x 0.049" W, height 0.024"). PHP00805E3973BBT1 has slightly larger dimensions (0.080" L x 0.050" W, height 0.033") and must be verified for PCB clearance compatibility.

Q: Which substitute should be selected for RoHS-compliant applications?

A: RN73R2ATTD3973F25 and RT0805BRD07397KL are both ROHS3 compliant. PHP00805E3973BBT1 is RoHS non-compliant and unsuitable for RoHS-regulated applications.

Q: Can these substitutes be used interchangeably in automotive applications?

A: RN73R2ATTD3973F25 carries AEC-Q200 automotive qualification. RT0805BRD07397KL and PHP00805E3973BBT1 do not list automotive certifications. For automotive applications, RN73R2ATTD3973F25 is the appropriate selection.