RN732ATTD4591F25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4591F25 is a 4.59 kOhms ±1% 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 equivalent and substitute components for ongoing design requirements and procurement continuity.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4591F25 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Resistance value: 4.59 kOhms (exact match required)
Package format: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Temperature coefficient: ±25ppm/°C (exact match required)
Operating temperature range: Minimum -55°C to 155°C coverage required
Moisture resistance: Required feature

Allowable Variation Parameters:

Tolerance: May be equal or tighter (±1% or better)
Power rating: May be equal or higher (0.1W or greater)
Product status: Active status preferred for obsolete parts
Compliance certifications: Additional certifications acceptable

Substitute parts are grouped into two categories: direct equivalents (matching all parameters including power rating and tolerance) and upgrades (enhanced specifications in tolerance, power rating, or certifications).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Package	Composition	Moisture Resistant	Status	RoHS
RN732ATTD4591F25	KOA Speer	4.59k	±1%	0.1	±25	-55 ~ 155	0805	Thin Film	Yes	Obsolete	ROHS3
RN73R2ATTD4591F25	KOA Speer	4.59k	±1%	0.125	±25	-55 ~ 155	0805	Thin Film	Yes	Active	ROHS3
PAT0805E4591BST1	Vishay Dale	4.59k	±0.1%	0.2	±25	-55 ~ 155	0805	Thin Film	Yes	Active	ROHS3
PHP00805E4591BBT1	Vishay Dale	4.59k	±0.1%	0.63	±25	-55 ~ 155	0805	Thin Film	Yes	Active	Non-compliant
PHP00805E4591BST1	Vishay Dale	4.59k	±0.1%	0.63	±25	-55 ~ 155	0805	Thin Film	Yes	Active	ROHS3
TNPW08054K59BEEA	Vishay Dale	4.59k	±0.1%	0.26	±25	-55 ~ 175	0805	Thin Film	Yes	Active	ROHS3
TNPW08054K59BEEN	Vishay Dale	4.59k	±0.1%	0.26	±25	-55 ~ 175	0805	Thin Film	Yes	Active	ROHS3
TNPW08054K59BETY	Vishay Dale	4.59k	±0.1%	0.125	±25	-55 ~ 125	0805	Thin Film	Yes	Active	Non-compliant

Engineering Selection Recommendations

Direct Equivalent (Same Specifications):

RN73R2ATTD4591F25 serves as the direct equivalent to RN732ATTD4591F25. Both components share identical electrical specifications (4.59 kOhms ±1%, 0.125W power rating, ±25ppm/°C temperature coefficient) and mechanical packaging (0805 format). The RN73R2ATTD4591F25 is active in production status and ROHS3 compliant, providing immediate procurement availability. This part includes automotive AEC-Q200 certification, adding qualification for automotive applications.

Upgrade Options (Enhanced Specifications):

PAT0805E4591BST1 (Vishay Dale) provides tolerance upgrade to ±0.1% with doubled power rating (0.2W) while maintaining all other parameters. This part includes anti-sulfur treatment and automotive AEC-Q200 certification.

PHP00805E4591BST1 (Vishay Dale) offers the highest power rating (0.63W) with ±0.1% tolerance, flame-proof construction, and safety features. This part is ROHS3 compliant and suitable for high-reliability applications.

TNPW08054K59BEEA and TNPW08054K59BEEN (Vishay Dale) provide ±0.1% tolerance with 0.26W power rating and extended operating temperature to 175°C. Both include anti-sulfur treatment and automotive AEC-Q200 certification. TNPW08054K59BEEN offers higher inventory availability (2185 pcs).

TNPW08054K59BETY (Vishay Dale) matches the 0.125W power rating with ±0.1% tolerance and military-grade construction. Operating temperature range is limited to -55°C ~ 125°C. RoHS compliance status is non-compliant.

Compliance Considerations:

For applications requiring ROHS3 compliance, avoid PHP00805E4591BBT1 and TNPW08054K59BETY. For applications requiring REACH compliance, avoid TNPW08054K59BETY. For automotive applications, select parts with AEC-Q200 certification: RN73R2ATTD4591F25, PAT0805E4591BST1, TNPW08054K59BEEA, or TNPW08054K59BEEN.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4591F25 directly replace RN732ATTD4591F25 in existing designs?

A: Yes. RN73R2ATTD4591F25 is a direct equivalent with identical electrical and mechanical specifications. The primary difference is active production status and automotive AEC-Q200 certification. No design modifications are required.

Q: What is the difference between the Vishay Dale upgrade options?

A: Vishay Dale offers multiple upgrade paths. PAT0805E4591BST1 provides ±0.1% tolerance and 0.2W power with anti-sulfur treatment. PHP00805E4591BST1 provides maximum power (0.63W) with flame-proof and safety features. TNPW series parts provide ±0.1% tolerance with extended temperature range to 175°C and automotive AEC-Q200 certification. Selection depends on application requirements for power dissipation, tolerance precision, and operating temperature.

Q: Are all substitute parts available in 0805 package format?

A: Yes. All listed substitute parts use the 0805 (2012 Metric) package format, ensuring mechanical and electrical compatibility with the original RN732ATTD4591F25 footprint.

Q: Which substitute part has the highest power rating?

A: PHP00805E4591BST1 and PHP00805E4591BBT1 both provide 0.63W (5/8W) power rating, the highest among all listed substitutes. PHP00805E4591BST1 is ROHS3 compliant; PHP00805E4591BBT1 is not.

Q: What is the temperature coefficient specification across all parts?

A: All substitute parts maintain ±25ppm/°C temperature coefficient, matching the original RN732ATTD4591F25 specification.

Q: Which substitute parts support automotive applications?

A: RN73R2ATTD4591F25, PAT0805E4591BST1, TNPW08054K59BEEA, and TNPW08054K59BEEN carry automotive AEC-Q200 certification.

Q: What is the maximum operating temperature across all options?

A: TNPW08054K59BEEA and TNPW08054K59BEEN support the highest operating temperature at 175°C. All other parts operate to 155°C or lower.

Q: Are there inventory considerations for part selection?

A: Yes. TNPW08054K59BEEN offers the highest inventory (2185 pcs), followed by PAT0805E4591BST1 (1112 pcs) and RN73R2ATTD4591F25 (854 pcs). Inventory levels should be verified with suppliers for current availability.

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