RN732ATTD2802F25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD2802F25 is a 28 kOhms ±1% 0.1W thin film chip resistor in 0805 (2012 Metric) package manufactured by KOA Speer Electronics, Inc. This component features moisture-resistant construction and operates across -55°C to 155°C. The part is currently obsolete, with 986 pieces available in new original stock. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Resistance	28 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 Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RN732ATTD2802F25 is determined by the following critical parameters:

Primary Substitution Criteria:

Resistance value: 28 kOhms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Temperature Coefficient: ±25ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C minimum (equal or wider range acceptable)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Secondary Substitution Parameters (Allowable Variations):

Tolerance: ±1% or tighter (±0.1%, ±0.25%, ±0.5% acceptable as upgrades)
Power Rating: 0.1W or higher (0.125W, 0.25W acceptable as upgrades)
Manufacturer: Different manufacturers acceptable if all primary criteria met
Product Status: Active preferred over obsolete for long-term availability

Substitute parts are grouped into two categories: direct equivalents (matching tolerance and power rating) and upgrades (improved tolerance and/or power rating while maintaining all primary parameters).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Product Status	MSL
RN732ATTD2802F25	KOA Speer	28 kΩ	±1%	0.1	0805	±25ppm/°C	-55~155°C	Obsolete	1
RN73R2ATTD2802F25	KOA Speer	28 kΩ	±1%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
CRT0805-FY-2802ELF	Bourns Inc.	28 kΩ	±1%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
RT0805FRD0728KL	YAGEO	28 kΩ	±1%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
4-2176093-5	TE Connectivity	28 kΩ	±0.1%	0.25	0805	±25ppm/°C	-55~155°C	Active	1
AT0805BRD0728KL	YAGEO	28 kΩ	±0.1%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
AT0805CRD0728KL	YAGEO	28 kΩ	±0.25%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
AT0805DRD0728KL	YAGEO	28 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
CPF0805B28KE1	TE Connectivity	28 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55~155°C	Active	1
ERA-6AEB2802V	Panasonic	28 kΩ	±0.1%	0.125	0805	±25ppm/°C	-55~155°C	Active	1
MCU08050D2802BP100	Vishay	28 kΩ	±0.1%	0.125	0805	±25ppm/°C	-55~125°C	Active	1

Engineering Selection Recommendations

Direct Equivalents (±1% Tolerance, Active Status):

RN73R2ATTD2802F25, CRT0805-FY-2802ELF, and RT0805FRD0728KL are direct functional equivalents to the RN732ATTD2802F25. All three maintain the ±1% tolerance specification and 0805 package. RN73R2ATTD2802F25 is recommended as the primary replacement due to identical KOA Speer manufacturing lineage and automotive AEC-Q200 qualification. CRT0805-FY-2802ELF and RT0805FRD0728KL offer equivalent performance from alternative manufacturers with active product status and full inventory availability.

Upgraded Tolerance Options (±0.1% Tolerance, Active Status):

AT0805BRD0728KL, ERA-6AEB2802V, and MCU08050D2802BP100 provide improved tolerance performance at ±0.1% while maintaining all primary electrical and mechanical parameters. ERA-6AEB2802V is recommended for applications requiring automotive AEC-Q200 qualification with highest inventory availability (30,032 pieces). AT0805BRD0728KL offers anti-sulfur and automotive AEC-Q200 features. MCU08050D2802BP100 operates to -55°C ~ 125°C, which is narrower than the original specification.

Upgraded Power Rating Option (0.25W, ±0.1% Tolerance):

4-2176093-5 from TE Connectivity provides both improved tolerance (±0.1%) and increased power rating (0.25W) while maintaining all primary parameters and full temperature range (-55°C ~ 155°C).

Same Power Rating, Improved Tolerance (0.1W, ±0.1% Tolerance):

CPF0805B28KE1 from TE Connectivity matches the original 0.1W power rating with improved ±0.1% tolerance, maintaining identical thermal and electrical performance envelope.

Tolerance Intermediate Options (Active Status):

AT0805CRD0728KL and AT0805DRD0728KL provide intermediate tolerance grades (±0.25% and ±0.5% respectively) with automotive AEC-Q200 qualification and anti-sulfur features for applications not requiring ±0.1% precision.

All recommended substitutes are ROHS3 compliant, MSL 1 (Unlimited), and maintain ±25ppm/°C temperature coefficient. Selection should be based on application tolerance requirements, automotive qualification needs, and thermal operating range constraints.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with tighter tolerance than the original ±1%?

A: Yes. Tighter tolerance specifications (±0.1%, ±0.25%, ±0.5%) are acceptable substitutes. These parts will perform identically to the original in applications requiring ±1% tolerance, with improved accuracy for precision circuits.

Q: What is the difference between the direct equivalents and upgraded parts?

A: Direct equivalents (RN73R2ATTD2802F25, CRT0805-FY-2802ELF, RT0805FRD0728KL) maintain ±1% tolerance matching the original specification. Upgraded parts offer either improved tolerance (±0.1%, ±0.25%, ±0.5%) or increased power rating (0.125W, 0.25W) while maintaining all other primary parameters. Selection depends on circuit requirements.

Q: Are all substitute parts in the same 0805 package?

A: Yes. All listed substitute parts use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). Physical board layout compatibility is maintained across all substitutes.

Q: Which substitute is best for automotive applications?

A: ERA-6AEB2802V, AT0805BRD0728KL, AT0805CRD0728KL, and AT0805DRD0728KL all carry automotive AEC-Q200 qualification. ERA-6AEB2802V is recommended due to highest inventory availability (30,032 pieces) and ±0.1% tolerance with 0.125W power rating.

Q: Does MCU08050D2802BP100 have any limitations compared to other substitutes?

A: MCU08050D2802BP100 operates to -55°C ~ 125°C, which is narrower than the original RN732ATTD2802F25 specification of -55°C ~ 155°C. This part is suitable only for applications not requiring operation above 125°C.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes. All listed substitutes are electrically and mechanically compatible. Mixing different manufacturers or tolerance grades is acceptable provided the circuit design accommodates the tolerance specifications of each part.

Q: What is the advantage of using CPF0805B28KE1 over other upgrades?

A: CPF0805B28KE1 maintains the original 0.1W power rating while providing improved ±0.1% tolerance. This is ideal for designs where power dissipation is constrained but tolerance improvement is desired.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's environmental compliance.

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

A: All parts, including the original and all substitutes, maintain ±25ppm/°C temperature coefficient, ensuring consistent thermal performance across the operating temperature range.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message