RN732ATTD4071D25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4071D25 is a 4.07 kOhms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) surface mount package. 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 support and procurement continuity.

Key Parameters

Parameter	Value
Resistance	4.07 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 to 155°C
Features	Moisture Resistant
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4071D25 is determined by the following critical parameters:

Primary Substitution Criteria:

Resistance value: 4.07 kOhms or 4.7 kOhms (within standard E-series tolerance bands)
Tolerance: ±0.5% or tighter (±0.25%, ±0.1%)
Power rating: 0.1W minimum (0.125W or higher acceptable)
Package: 0805 (2012 Metric) form factor
Composition: Thin film construction
Temperature coefficient: ±25ppm/°C
Operating temperature: -55°C to 155°C minimum

Substitution Categories:

Direct Equivalents maintain identical resistance (4.07 kOhms) and tolerance (±0.5%) with compatible power ratings and packaging.

Functional Substitutes use 4.7 kOhms resistance (standard E-series value adjacent to 4.07 kOhms) with equal or superior tolerance specifications, maintaining all other electrical and mechanical parameters.

Upgraded Alternatives provide enhanced tolerance (±0.25% or ±0.1%), automotive qualification (AEC-Q200), or additional protective features while maintaining core electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Features	Status
RN732ATTD4071D25	KOA Speer	4.07 kΩ	±0.5%	0.1	0805	±25ppm/°C	-55 to 155°C	Moisture Resistant	Obsolete
RN73R2ATTD4071D25	KOA Speer	4.07 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 to 155°C	AEC-Q200, Moisture Resistant	Active
RR1220P-472-D	Susumu	4.7 kΩ	±0.5%	0.1	0805	±25ppm/°C	-55 to 125°C	—	Active
RT0805DRD074K7L	YAGEO	4.7 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 to 155°C	—	Active
TNPW08054K70DETY	Vishay Dale	4.7 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 to 125°C	Military	Active
AT0805CRD074K7L	YAGEO	4.7 kΩ	±0.25%	0.125	0805	±25ppm/°C	-55 to 155°C	Anti-Sulfur, AEC-Q200, Moisture Resistant	Active
CAR0805-4K7B1	Riedon	4.7 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55 to 155°C	—	Active
CPF-A-0805B4K7E	TE Connectivity	4.7 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55 to 155°C	Anti-Sulfur, AEC-Q200, Moisture Resistant	Active
CPF-A-0805B4K7E1	TE Connectivity	4.7 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55 to 155°C	Anti-Sulfur, AEC-Q200, Moisture Resistant	Active
CPF0805B4K7E	TE Connectivity	4.7 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55 to 155°C	—	Active
CPF0805B4K7E1	TE Connectivity	4.7 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55 to 155°C	—	Active

Engineering Selection Recommendations

Direct Equivalent (Preferred for Pin-Compatible Replacement):

RN73R2ATTD4071D25 from KOA Speer Electronics is the primary direct equivalent. It maintains the identical 4.07 kOhms resistance and ±0.5% tolerance of the obsolete RN732ATTD4071D25. The power rating increases from 0.1W to 0.125W, providing additional thermal margin. This part is active in production, ROHS3 compliant, and includes automotive AEC-Q200 qualification with moisture-resistant construction. The operating temperature range extends to 155°C, matching the original specification.

Functional Substitutes (4.7 kOhms Resistance):

When 4.07 kOhms resistance is not critical to circuit function, the following active parts provide equivalent electrical performance:

RR1220P-472-D (Susumu): Maintains 0.1W power rating and ±0.5% tolerance. Operating temperature limited to 125°C. Suitable for non-critical temperature applications.
RT0805DRD074K7L (YAGEO): Provides 0.125W power rating with full -55°C to 155°C temperature range. ROHS3 compliant. Recommended for standard industrial applications.
TNPW08054K70DETY (Vishay Dale): Military-grade thin film construction with 0.125W rating. Operating temperature limited to 125°C. RoHS non-compliant. Suitable for military or high-reliability applications where military specifications are required.

Upgraded Alternatives (Enhanced Tolerance):

AT0805CRD074K7L (YAGEO): Provides ±0.25% tolerance with 0.125W power rating. Includes anti-sulfur coating, AEC-Q200 automotive qualification, and moisture resistance. Full -55°C to 155°C range. ROHS3 compliant.
CAR0805-4K7B1 (Riedon): Offers superior ±0.1% tolerance with 0.1W power rating matching the original. Full -55°C to 155°C operating range. ROHS3 compliant. Recommended for precision analog circuits requiring tight tolerance control.
CPF-A-0805B4K7E / CPF-A-0805B4K7E1 (TE Connectivity): ±0.1% tolerance with anti-sulfur coating and AEC-Q200 automotive qualification. 0.1W power rating. Full temperature range. ROHS3 compliant. Suitable for automotive and harsh environment applications.
CPF0805B4K7E / CPF0805B4K7E1 (TE Connectivity): ±0.1% tolerance, 0.1W power rating, full temperature range. ROHS3 compliant. Highest inventory availability (41,033 pcs for CPF0805B4K7E1). Recommended for high-volume production requiring precision and supply security.

Compliance Considerations:

All recommended substitutes are ROHS3 compliant except TNPW08054K70DETY. All maintain MSL 1 (Unlimited) moisture sensitivity rating. Temperature coefficient remains ±25ppm/°C across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use a 4.7 kOhms resistor in place of the 4.07 kOhms RN732ATTD4071D25?

A: Yes, if circuit tolerance permits. The 4.7 kOhms value represents a 2.9% increase from 4.07 kOhms. This substitution is valid when the circuit design accommodates this resistance variance. Verify circuit function through simulation or testing before production implementation.

Q: What is the difference between the RN73R2ATTD4071D25 and the original RN732ATTD4071D25?

A: The RN73R2ATTD4071D25 is the active production equivalent. Key differences: power rating increases from 0.1W to 0.125W (higher thermal capacity), includes AEC-Q200 automotive qualification, and is currently in active production status. Electrical specifications (resistance, tolerance, temperature coefficient, operating range) remain identical.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed substitutes use 0805 (2012 Metric) surface mount package with identical footprint dimensions (0.079" L × 0.049" W / 2.00mm × 1.25mm). Height variations range from 0.020" to 0.026" (0.50mm to 0.65mm), which is within standard PCB assembly tolerances for 0805 components.

Q: Which substitute offers the best tolerance specification?

A: CAR0805-4K7B1, CPF-A-0805B4K7E, CPF-A-0805B4K7E1, CPF0805B4K7E, and CPF0805B4K7E1 all provide ±0.1% tolerance, representing a 5× improvement over the original ±0.5% specification. These are recommended for precision analog circuits, measurement instrumentation, or applications requiring tight resistance control.

Q: Is RoHS compliance required for my application?

A: All recommended substitutes except TNPW08054K70DETY are ROHS3 compliant. If RoHS compliance is mandatory, exclude TNPW08054K70DETY from consideration. For automotive applications, verify customer-specific RoHS requirements, as some automotive suppliers maintain RoHS exemptions for specific component categories.

Q: What is the temperature coefficient, and does it affect my circuit?

A: Temperature coefficient of ±25ppm/°C indicates resistance change of ±0.0025% per degree Celsius. All substitutes maintain this specification. For a 4.07 kOhms resistor operating across a 100°C temperature range, maximum resistance drift is approximately ±10.2 Ohms. Verify this drift is acceptable for your circuit's operating specifications.

Q: Can I use TNPW08054K70DETY in a commercial application?

A: TNPW08054K70DETY is classified as military-grade and is RoHS non-compliant. It is suitable for military, aerospace, or high-reliability applications where military specifications are contractually required. For commercial or consumer applications, select from the ROHS3-compliant alternatives.

Q: Which substitute has the highest inventory availability?

A: CPF0805B4K7E1 from TE Connectivity offers the highest inventory with 41,033 pieces in stock. This part provides ±0.1% tolerance, 0.1W power rating, full -55°C to 155°C operating range, and ROHS3 compliance, making it suitable for high-volume production with assured supply continuity.

Q: Are automotive-qualified parts necessary for my design?

A: Automotive qualification (AEC-Q200) is required only if your application is automotive or meets automotive reliability standards. AEC-Q200 qualified parts include RN73R2ATTD4071D25, AT0805CRD074K7L, CPF-A-0805B4K7E, and CPF-A-0805B4K7E1. For non-automotive applications, standard industrial-grade alternatives are functionally equivalent.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message