RN732ATTD3012D25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3012D25 is a 30.1 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 part is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistance value and package configuration.

Key Parameters

Parameter	Value
Resistance	30.1 kOhms
Tolerance	±0.5%
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RN732ATTD3012D25 are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes maintain identical or functionally equivalent electrical specifications:

Resistance value: 30.1 kOhms
Tolerance: ±0.5%
Power rating: 0.1W (1/10W) or higher
Package: 0805 (2012 Metric)
Composition: Thin Film
Temperature coefficient: ±25ppm/°C
Operating temperature range: -55°C to 155°C (or equivalent)

Upgrade Substitutes provide enhanced performance characteristics while maintaining the same resistance value and package:

Improved tolerance (±0.1% or ±0.25% vs. ±0.5%)
Higher power ratings (0.125W, 0.25W vs. 0.1W)
Enhanced features (automotive AEC-Q200, anti-sulfur, current sense)
Active product status (vs. obsolete)

All substitute parts comply with ROHS3 and maintain MSL 1 rating for moisture sensitivity.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp (°C)	Status	Features
RN732ATTD3012D25	KOA Speer	30.1 kΩ	±0.5%	0.1	0805	±25ppm/°C	-55 ~ 155	Obsolete	Moisture Resistant
RN73R2ATTD3012D25	KOA Speer	30.1 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Automotive AEC-Q200, Moisture Resistant
RP73F2A30K1DTD	TE Connectivity	30.1 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Thin Film
RR1220P-3012-D-M	Susumu	30.1 kΩ	±0.5%	0.1	0805	±25ppm/°C	-55 ~ 125	Active	Thin Film
RT0805DRD0730K1L	YAGEO	30.1 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Thin Film
4-2176093-8	TE Connectivity	30.1 kΩ	±0.1%	0.25	0805	±25ppm/°C	-55 ~ 155	Active	Thin Film (Upgrade)
AT0805BRD0730K1L	YAGEO	30.1 kΩ	±0.1%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant (Upgrade)
AT0805CRD0730K1L	YAGEO	30.1 kΩ	±0.25%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant (Upgrade)
AT0805DRD0730K1L	YAGEO	30.1 kΩ	±0.5%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant (Upgrade)
CPF0805B30K1E1	TE Connectivity	30.1 kΩ	±0.1%	0.1	0805	±25ppm/°C	-55 ~ 155	Active	Thin Film (Upgrade)
CRT0805-BY-3012ELF	Bourns Inc.	30.1 kΩ	±0.1%	0.125	0805	±25ppm/°C	-55 ~ 155	Active	Current Sense, Thin Film (Upgrade)

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Active):

Select RN73R2ATTD3012D25 (KOA Speer) or AT0805DRD0730K1L (YAGEO) when direct functional equivalence is required. Both parts maintain ±0.5% tolerance, 30.1 kOhms resistance, and 0805 package. RN73R2ATTD3012D25 offers automotive AEC-Q200 qualification and active product status from the original manufacturer. AT0805DRD0730K1L provides anti-sulfur and automotive AEC-Q200 features with active status.

For Equivalent Performance with Active Supply:

RR1220P-3012-D-M (Susumu) provides identical electrical specifications (30.1 kOhms, ±0.5%, 0.1W) with active product status. Operating temperature range is -55°C to 125°C, which is acceptable for most applications within the original -55°C to 155°C specification. This part offers the closest electrical match to the original.

RP73F2A30K1DTD (TE Connectivity) and RT0805DRD0730K1L (YAGEO) both provide 0.125W power rating with identical tolerance and resistance specifications, suitable for applications where slightly higher power dissipation capability is beneficial.

For Enhanced Performance (Upgrade Path):

CPF0805B30K1E1 (TE Connectivity) matches the original 0.1W power rating while providing ±0.1% tolerance improvement and active product status. This upgrade maintains identical power characteristics while enhancing accuracy.

AT0805BRD0730K1L (YAGEO) offers ±0.1% tolerance with automotive AEC-Q200 qualification, anti-sulfur features, and 0.125W power rating. Suitable for automotive and high-reliability applications.

4-2176093-8 (TE Connectivity) provides the highest power rating (0.25W) with ±0.1% tolerance and active status. Recommended for applications requiring enhanced thermal margin or higher power dissipation.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and ±25ppm/°C temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Can RR1220P-3012-D-M be used as a direct replacement despite the lower maximum operating temperature (125°C vs. 155°C)?

A: RR1220P-3012-D-M is functionally equivalent for applications operating within -55°C to 125°C range. If the application requires operation above 125°C, alternative substitutes with -55°C to 155°C rating must be selected.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain identical electrical specifications (30.1 kOhms, ±0.5%, 0.1W). Upgrade substitutes provide enhanced characteristics such as improved tolerance (±0.1% or ±0.25%), higher power ratings, or additional features (automotive AEC-Q200, anti-sulfur) while maintaining the same resistance value and package.

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

A: All listed substitutes use 0805 (2012 Metric) surface mount package with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). Height variations are minimal (0.020" to 0.026" / 0.50mm to 0.65mm), which do not affect PCB assembly compatibility.

Q: Which substitute offers the best supply availability?

A: RR1220P-3012-D-M (Susumu) shows the highest inventory level at 31,086 pieces in stock, providing the most immediate supply availability.

Q: Can automotive-qualified parts (AEC-Q200) be used in non-automotive applications?

A: Yes. Automotive-qualified parts such as RN73R2ATTD3012D25, AT0805BRD0730K1L, AT0805CRD0730K1L, and AT0805DRD0730K1L meet or exceed specifications for general industrial and commercial applications. AEC-Q200 qualification indicates enhanced reliability and environmental stress testing.

Q: What is the significance of the ±25ppm/°C temperature coefficient across all parts?

A: All substitutes maintain identical temperature coefficient, ensuring consistent resistance stability across the -55°C to 155°C operating range. This parameter is critical for precision analog circuits and does not vary among substitute options.

Q: Is moisture sensitivity a concern for these parts?

A: All parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations. Standard PCB assembly and storage practices are sufficient without special moisture control requirements.

Q: Which substitute is recommended for new designs?

A: For new designs requiring active product status and long-term availability, CPF0805B30K1E1 (TE Connectivity) or AT0805BRD0730K1L (YAGEO) are recommended. Both offer active status, enhanced tolerance (±0.1%), and full compliance with current standards.

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