RN732ATTD4591D25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4591D25 is a 4.59 kOhms ±0.5% 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 ±25ppm/°C and operates across -55°C to 155°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Resistance	4.59 kOhms
Tolerance	±0.5%
Power Rating	0.1W (1/10W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Resistance	Yes
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD4591D25 is determined by the following mandatory parameters:

Core Electrical Parameters:

Resistance value: 4.59 kOhms (exact match required)
Tolerance: ±0.5% or better (tighter tolerance acceptable)
Temperature coefficient: ±25ppm/°C (matching specification)
Operating temperature range: Must encompass -55°C minimum and 155°C maximum

Mechanical Parameters:

Package format: 0805 (2012 Metric) (exact match required)
Composition: Thin film construction
Termination count: 2 terminations

Power Rating Consideration:

Minimum power rating: 0.1W (1/10W)
Higher power ratings are acceptable for direct substitution

Environmental & Compliance:

Moisture resistance: Required
RoHS3 compliance: Preferred for new designs

Substitute parts meeting all core electrical and mechanical parameters are classified as direct equivalents. Parts with enhanced specifications (lower tolerance, higher power rating, additional certifications) are classified as upgrades.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Features	Status	RoHS
RN732ATTD4591D25	KOA Speer	4.59 kΩ	±0.5%	0.1	0805	±25ppm/°C	-55~155°C	Moisture Resistant	Obsolete	ROHS3
RN73R2ATTD4591D25	KOA Speer	4.59 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55~155°C	AEC-Q200, Moisture Resistant	Active	ROHS3
PAT0805E4591BST1	Vishay Dale	4.59 kΩ	±0.1%	0.2	0805	±25ppm/°C	-55~155°C	Anti-Sulfur, AEC-Q200, Moisture Resistant	Active	ROHS3
PHP00805E4591BBT1	Vishay Dale	4.59 kΩ	±0.1%	0.63	0805	±25ppm/°C	-55~155°C	Flame Proof, Moisture Resistant, Safety	Active	Non-compliant
PHP00805E4591BST1	Vishay Dale	4.59 kΩ	±0.1%	0.63	0805	±25ppm/°C	-55~155°C	Flame Proof, Moisture Resistant, Safety	Active	ROHS3
TNPW08054K59BEEA	Vishay Dale	4.59 kΩ	±0.1%	0.26	0805	±25ppm/°C	-55~175°C	Anti-Sulfur, AEC-Q200, Moisture Resistant	Active	ROHS3
TNPW08054K59BEEN	Vishay Dale	4.59 kΩ	±0.1%	0.26	0805	±25ppm/°C	-55~175°C	Anti-Sulfur, AEC-Q200, Moisture Resistant	Active	ROHS3
TNPW08054K59BETY	Vishay Dale	4.59 kΩ	±0.1%	0.125	0805	±25ppm/°C	-55~125°C	Military	Active	Non-compliant

Engineering Selection Recommendations

Direct Equivalent (Same Specifications, Active Status):

RN73R2ATTD4591D25 is the primary direct equivalent. This KOA Speer part maintains identical electrical specifications (4.59 kΩ ±0.5%, ±25ppm/°C) and package format while offering active product status. The power rating increase from 0.1W to 0.125W provides additional thermal margin without affecting circuit performance. AEC-Q200 automotive qualification adds reliability assurance for demanding applications.

Upgrade Options (Enhanced Specifications, Active Status):

TNPW08054K59BEEA and TNPW08054K59BEEN (Vishay Dale TNPW e3 series) provide tighter tolerance (±0.1%), higher power rating (0.26W), and extended operating temperature to 175°C. Both include anti-sulfur treatment and AEC-Q200 qualification. These parts are suitable for applications requiring improved accuracy and thermal performance.

PAT0805E4591BST1 (Vishay Dale PAT series) offers ±0.1% tolerance and 0.2W power rating with anti-sulfur and AEC-Q200 features, maintaining the -55°C to 155°C temperature range of the original part.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance except TNPW08054K59BETY (military variant, RoHS non-compliant) and PHP00805E4591BBT1 (RoHS non-compliant). For new designs requiring RoHS3 compliance, select from ROHS3-compliant alternatives.

Temperature Range Limitation:

TNPW08054K59BETY operates only to 125°C maximum, below the original part's 155°C specification. This part is suitable only for applications with maximum operating temperature ≤125°C.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4591D25 directly replace RN732ATTD4591D25 in existing designs?

A: Yes. RN73R2ATTD4591D25 maintains identical resistance (4.59 kΩ), tolerance (±0.5%), temperature coefficient (±25ppm/°C), and package format (0805). The increased power rating (0.125W vs. 0.1W) is backward-compatible. Both parts feature moisture resistance and ROHS3 compliance. The primary advantage is active product status versus obsolete status.

Q: What is the difference between TNPW08054K59BEEA and TNPW08054K59BEEN?

A: Both parts are electrically and mechanically identical: 4.59 kΩ ±0.1%, 0.26W, 0805 package, -55°C to 175°C operating range, with anti-sulfur treatment and AEC-Q200 qualification. The difference is packaging designation only. TNPW08054K59BEEN has higher inventory availability (2185 pcs vs. 943 pcs).

Q: Can I use PHP00805E4591BST1 in place of RN732ATTD4591D25?

A: Yes, with compliance verification. PHP00805E4591BST1 meets all electrical and mechanical requirements: 4.59 kΩ ±0.1%, 0805 package, ±25ppm/°C, -55°C to 155°C. It provides enhanced specifications (tighter tolerance, higher power rating of 0.63W) and includes flame-proof and safety features. Confirm RoHS3 compliance requirement: PHP00805E4591BST1 is ROHS3-compliant, while PHP00805E4591BBT1 is not.

Q: Why does TNPW08054K59BETY have a lower maximum temperature rating?

A: TNPW08054K59BETY is a military-grade variant with maximum operating temperature of 125°C, compared to 155°C for the original part and 175°C for commercial-grade TNPW e3 variants. This limitation is inherent to the military specification. Use this part only in applications with maximum operating temperature ≤125°C.

Q: Are all substitute parts moisture-resistant?

A: Yes. All listed substitute parts include moisture-resistant construction, matching the original RN732ATTD4591D25 specification.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive electronics qualification standard. Parts bearing this rating have undergone stress testing and reliability validation for automotive applications. RN73R2ATTD4591D25, PAT0805E4591BST1, TNPW08054K59BEEA, and TNPW08054K59BEEN carry AEC-Q200 qualification, making them suitable for automotive and high-reliability applications.

Q: Can I use a higher tolerance part (±0.1%) in place of ±0.5%?

A: Yes. Tighter tolerance is always acceptable as a substitute. Parts with ±0.1% tolerance (PAT0805E4591BST1, PHP series, TNPW series) provide improved accuracy compared to the original ±0.5% specification and are fully compatible.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message