RN732ATTD4641F50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4641F50 is a 4.64 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 features moisture-resistant construction with a temperature coefficient of ±50ppm/°C and operating range of -55°C to 155°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Resistance	4.64 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Resistance	Yes
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4641F50 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Resistance value: 4.64 kOhms
Package type: 0805 (2012 Metric)
Composition: Thin Film
Temperature coefficient: ±50ppm/°C
Operating temperature range: -55°C to 155°C
Moisture resistance capability

Allowable Variations:

Tolerance: Can be equal or tighter (±1%, ±0.5%, ±0.25%, ±0.1%)
Power rating: Can be equal or higher (0.1W, 0.125W, 0.25W, 0.63W)
Features: Additional certifications (AEC-Q200, Anti-Sulfur) are acceptable enhancements
RoHS/REACH compliance: Must maintain or improve compliance status

Substitute parts are grouped into two categories: direct replacements (same or higher power rating with matching tolerance) and upgrade options (improved tolerance or power rating with enhanced features).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Status	RoHS
RN732ATTD4641F50	KOA Speer	4.64 kΩ	±1%	0.1	0805	±50ppm/°C	-55 to 155°C	Obsolete	ROHS3
RN73R2ATTD4641F50	KOA Speer	4.64 kΩ	±1%	0.125	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
RT0805FRE074K64L	YAGEO	4.64 kΩ	±1%	0.125	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
AT0805DRE074K64L	YAGEO	4.64 kΩ	±0.5%	0.125	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
MCU08050C4641DP500	Vishay Beyschlag	4.64 kΩ	±0.5%	0.125	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
PHP00805H4641BST1	Vishay Dale	4.64 kΩ	±0.1%	0.63	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
RNCF0805BTC4K64	Stackpole	4.64 kΩ	±0.1%	0.25	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
RNCF0805DTC4K64	Stackpole	4.64 kΩ	±0.5%	0.25	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
RT0805BRE074K64L	YAGEO	4.64 kΩ	±0.1%	0.125	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3
RT0805CRE074K64L	YAGEO	4.64 kΩ	±0.25%	0.125	0805	±50ppm/°C	-55 to 155°C	Active	ROHS3

Engineering Selection Recommendations

Direct Replacement (Same Tolerance ±1%):

RN73R2ATTD4641F50 from KOA Speer Electronics is the primary direct replacement. This part maintains the ±1% tolerance specification while increasing power rating from 0.1W to 0.125W. The component is active in production status and carries AEC-Q200 automotive qualification, providing enhanced reliability for automotive applications. ROHS3 compliance is maintained.

RT0805FRE074K64L from YAGEO provides equivalent electrical performance with ±1% tolerance and 0.125W power rating. This part is active and ROHS3 compliant, offering cross-manufacturer sourcing flexibility.

Upgraded Tolerance Options (±0.5%):

AT0805DRE074K64L (YAGEO) and MCU08050C4641DP500 (Vishay Beyschlag) both provide tighter ±0.5% tolerance with 0.125W power rating. Both parts are active, ROHS3 compliant, and include anti-sulfur features. AT0805DRE074K64L carries AEC-Q200 automotive qualification.

Enhanced Performance Options (±0.1% Tolerance):

RT0805BRE074K64L (YAGEO) and RNCF0805BTC4K64 (Stackpole) deliver ±0.1% tolerance. RNCF0805BTC4K64 includes AEC-Q200 automotive qualification and 0.25W power rating. Both are active and ROHS3 compliant.

Maximum Performance Option:

PHP00805H4641BST1 (Vishay Dale) offers ±0.1% tolerance with 0.63W power rating, flame-proof and safety-rated construction. This part is active and ROHS3 compliant, suitable for applications requiring highest precision and thermal margin.

All substitute parts maintain the 0805 package, thin film composition, ±50ppm/°C temperature coefficient, and -55°C to 155°C operating range of the original component.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher power rating than the original 0.1W specification?

A: Yes. Higher power ratings (0.125W, 0.25W, 0.63W) are acceptable substitutes. The 0805 package accommodates these ratings within the same physical dimensions. Higher power rating provides additional thermal margin without affecting electrical performance.

Q: What is the difference between ±1%, ±0.5%, and ±0.1% tolerance options?

A: Tolerance specifies the maximum deviation from the nominal 4.64 kOhms resistance value. ±1% allows ±46.4 Ohms deviation; ±0.5% allows ±23.2 Ohms; ±0.1% allows ±4.64 Ohms. Tighter tolerances are suitable for precision applications but are not required for general-purpose circuits tolerant of the original ±1% specification.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant except PHP00805H4641BBT1, which is RoHS non-compliant. PHP00805H4641BST1 is the ROHS3-compliant variant of the same series.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this rating have undergone additional reliability testing and are approved for automotive applications. This qualification is optional for general-purpose use but recommended for automotive designs.

Q: Can I substitute the RN732ATTD4641F50 with a part having different tolerance?

A: Yes. Tighter tolerance (±0.5%, ±0.25%, ±0.1%) is a direct upgrade and fully compatible. Looser tolerance is not available in the substitute list. The original ±1% tolerance is maintained or improved in all listed alternatives.

Q: Is the 0805 package dimension identical across all substitute parts?

A: The 0805 (2012 Metric) package is standardized at 0.079" L × 0.049" W (2.00mm × 1.25mm). Height varies slightly: most parts are 0.024" (0.60mm); MCU08050C4641DP500 is 0.022" (0.55mm); PHP series parts are 0.033" (0.84mm). These variations are within PCB assembly tolerances and do not affect interchangeability.

Q: Why is the original RN732ATTD4641F50 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active substitute parts from KOA Speer (RN73R2ATTD4641F50) and other manufacturers ensure continued availability and design support.

Q: Which substitute part should I select for a new design?

A: For new designs, select from active-status parts. RN73R2ATTD4641F50 (KOA Speer) maintains the original manufacturer lineage. RT0805FRE074K64L (YAGEO) and AT0805DRE074K64L (YAGEO) provide alternative sourcing. For automotive applications, prioritize parts with AEC-Q200 qualification.

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