RN732ATTD4591F50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4591F50 is a 4.59 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 RN732ATTD4591F50 is classified as obsolete product status. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

RN732ATTD4591F50

KOA Speer Electronics, Inc.In Stock: 975RN732ATTD4591F50 Datasheet

Current PartRFQ

RN73R2ATTD4591F50

KOA Speer Electronics, Inc.In Stock: 1182RN73R2ATTD4591F50 Datasheet

DirectRFQ

PHP00805H4591BBT1

Vishay Dale Thin FilmIn Stock: 905PHP00805H4591BBT1 Datasheet

UpgradeRFQ

PHP00805H4591BST1

Vishay Dale Thin FilmIn Stock: 752PHP00805H4591BST1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD4591F50 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.59 kOhms
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Tolerance: Can be equal or tighter (±1% or better)
• Power Rating: Can be equal or higher (0.1W or greater)
• Features: Can include additional certifications or enhancements
• RoHS Status: Must maintain compliance or upgrade to higher compliance level
• Product Status: Active status preferred for long-term availability

The substitute parts listed below meet all mandatory matching parameters while offering improvements in tolerance, power rating, or compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitute (Same Manufacturer, Active Status):

RN73R2ATTD4591F50 is the primary substitute for RN732ATTD4591F50. Both components are manufactured by KOA Speer Electronics, Inc. and maintain identical electrical and mechanical specifications. RN73R2ATTD4591F50 offers higher power rating (0.125W vs 0.1W), active product status, and automotive AEC-Q200 certification. RoHS3 compliance is maintained. This part is recommended for direct replacement in new designs and production continuity.

Upgraded Substitute (Enhanced Performance, Different Manufacturer):

PHP00805H4591BST1 is an upgraded substitute manufactured by Vishay Dale Thin Film. This component provides tighter tolerance (±0.1% vs ±1%), significantly higher power rating (0.63W vs 0.1W), and additional safety certifications (Flame Proof, Safety). RoHS3 compliance is maintained. This part is suitable for applications requiring enhanced precision and thermal performance.

Alternative Upgraded Substitute (Enhanced Performance, RoHS Non-Compliant):

PHP00805H4591BBT1 is functionally equivalent to PHP00805H4591BST1 with identical electrical specifications and enhanced features. However, this variant is RoHS non-compliant. Selection of this part requires verification that RoHS compliance is not mandated for the application.

All substitute parts maintain identical package dimensions, temperature coefficient, and operating temperature range as the original component.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4591F50 be used as a direct replacement for RN732ATTD4591F50?

A: Yes. Both components share identical resistance (4.59 kOhms), tolerance (±1%), package (0805), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). RN73R2ATTD4591F50 offers higher power rating (0.125W vs 0.1W) and active product status, making it suitable for direct substitution.

Q: What are the key differences between KOA Speer and Vishay Dale substitute options?

A: RN73R2ATTD4591F50 (KOA Speer) maintains the original tolerance specification (±1%) with active status and automotive certification. PHP00805H4591BST1 and PHP00805H4591BBT1 (Vishay Dale) provide tighter tolerance (±0.1%), higher power rating (0.63W), and safety certifications. Selection depends on application requirements for precision and thermal performance.

Q: Are all substitute parts compatible with the original 0805 package footprint?

A: Yes. All substitute parts use 0805 (2012 Metric) package format. Physical dimensions are equivalent: 0.079" L x 0.049" W (2.00mm x 1.25mm). Height variations exist (0.024" to 0.033" seated maximum), but all components fit standard 0805 PCB layouts.

Q: What is the difference between PHP00805H4591BST1 and PHP00805H4591BBT1?

A: Both components are electrically and mechanically identical with 4.59 kOhms resistance, ±0.1% tolerance, and 0.63W power rating. The primary difference is RoHS compliance: PHP00805H4591BST1 is ROHS3 compliant, while PHP00805H4591BBT1 is RoHS non-compliant. Selection depends on regulatory requirements for the end application.

Q: Why is RN732ATTD4591F50 classified as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation. RN73R2ATTD4591F50 represents the active replacement from the same manufacturer with equivalent specifications and enhanced features.

Q: Can higher power-rated substitutes be used in applications designed for 0.1W?

A: Yes. Higher power ratings (0.125W or 0.63W) are compatible with applications designed for 0.1W operation. The component will operate within its thermal limits. Power rating selection should be based on actual circuit power dissipation requirements, not design specification alone.

Q: Are all substitute parts moisture-resistant?

A: Yes. All listed substitute parts include moisture-resistant construction with MSL rating of 1 (Unlimited), matching the original component specification.