RG2012N-4021-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-4021-C-T5 is a 4.02 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component features anti-sulfur construction and meets Automotive AEC-Q200 qualification standards. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility while offering improved specifications or continued availability.

Key Parameters

Parameter	Value
Resistance	4.02 kOhms
Tolerance	±0.25%
Power Rating	0.125W (1/8W)
Package	0805 (2012 Metric)
Composition	Thin Film
Features	Anti-Sulfur, Automotive AEC-Q200
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Resistance value: 4.02 kOhms (exact match required)
Package type: 0805 (2012 Metric) (exact match required)
Power rating: minimum 0.125W (1/8W) or higher
Composition: Thin Film
Operating temperature range: must encompass -55°C ~ 155°C or higher

Tolerance and Performance Upgrades: Substitute parts with equal or tighter tolerance specifications (±0.25%, ±0.1%, ±0.05%, ±0.02%) are functionally compatible. Tighter tolerances represent performance upgrades without compromising circuit compatibility.

Temperature Coefficient Variations: The main part specifies ±10ppm/°C. Substitute parts with ±5ppm/°C or lower represent improved thermal stability while maintaining functional compatibility.

Automotive and Compliance Considerations: All listed substitutes maintain AEC-Q200 automotive qualification and ROHS3 compliance, ensuring regulatory and quality standard alignment.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Status	Inventory
RG2012N-4021-C-T5	Susumu	4.02 kΩ	±0.25%	0.125	±10	-55 ~ 155	Obsolete	981 Pcs
RG2012N-4021-B-T5	Susumu	4.02 kΩ	±0.1%	0.125	±10	-55 ~ 155	Active	685 Pcs
RG2012N-4021-W-T1	Susumu	4.02 kΩ	±0.05%	0.125	±10	-55 ~ 155	Active	836 Pcs
RG2012N-4021-W-T5	Susumu	4.02 kΩ	±0.05%	0.125	±10	-55 ~ 155	Active	949 Pcs
RG2012V-4021-B-T5	Susumu	4.02 kΩ	±0.1%	0.125	±5	-55 ~ 155	Active	881 Pcs
RG2012V-4021-P-T1	Susumu	4.02 kΩ	±0.02%	0.125	±5	-55 ~ 155	Active	865 Pcs
RG2012V-4021-W-T1	Susumu	4.02 kΩ	±0.05%	0.125	±5	-55 ~ 155	Active	851 Pcs
RG2012V-4021-W-T5	Susumu	4.02 kΩ	±0.05%	0.125	±5	-55 ~ 155	Active	853 Pcs
MCU08050F4021BP500	Vishay Beyschlag/Draloric/BC Components	4.02 kΩ	±0.1%	0.125	±10	-55 ~ 125	Active	729 Pcs
TNPW08054K02BYEA	Vishay Dale	4.02 kΩ	±0.1%	0.26	±10	-55 ~ 175	Active	706 Pcs

Engineering Selection Recommendations

Direct Susumu RG Series Substitutes (Preferred Category): The RG2012N-4021-B-T5, RG2012N-4021-W-T1, and RG2012N-4021-W-T5 are direct Susumu RG series substitutes maintaining identical package, power rating, and operating temperature specifications. These parts offer tighter tolerance specifications (±0.1% and ±0.05%) compared to the obsolete ±0.25% main part. All three are active products with substantial inventory availability.

Enhanced Susumu RG2012V Series (Superior Thermal Performance): The RG2012V series variants (RG2012V-4021-B-T5, RG2012V-4021-P-T1, RG2012V-4021-W-T1, RG2012V-4021-W-T5) provide improved temperature coefficient performance at ±5ppm/°C compared to the main part's ±10ppm/°C. These components maintain all other electrical and mechanical specifications while delivering enhanced thermal stability. The RG2012V-4021-P-T1 offers the tightest tolerance at ±0.02%.

Cross-Manufacturer Alternatives: The MCU08050F4021BP500 (Vishay Beyschlag/Draloric/BC Components) provides functional equivalence with ±0.1% tolerance and ±10ppm/°C temperature coefficient. Operating temperature range extends to -55°C ~ 125°C, which is 30°C lower than the main part's upper limit. This part is suitable for applications not requiring the full 155°C upper temperature specification.

The TNPW08054K02BYEA (Vishay Dale) offers increased power rating at 0.26W with extended operating temperature to 175°C. This part is applicable for designs requiring higher power dissipation or elevated temperature operation while maintaining the 4.02 kOhms resistance and ±0.1% tolerance.

Compliance and Certification: All substitute parts maintain ROHS3 compliance, AEC-Q200 automotive qualification (where applicable), and MSL 1 moisture sensitivity rating, ensuring regulatory and quality standard continuity.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-4021-B-T5 directly replace RG2012N-4021-C-T5?

A: Yes. Both parts share identical resistance (4.02 kOhms), package (0805), power rating (0.125W), and operating temperature range (-55°C ~ 155°C). The RG2012N-4021-B-T5 provides tighter tolerance (±0.1% versus ±0.25%), representing a performance upgrade with full functional compatibility.

Q: What is the difference between RG2012N and RG2012V series?

A: The primary difference is temperature coefficient specification. RG2012N series specifies ±10ppm/°C, while RG2012V series specifies ±5ppm/°C. Both series maintain identical resistance, package, power rating, and operating temperature range. The RG2012V series provides superior thermal stability for precision applications.

Q: Is MCU08050F4021BP500 suitable for all applications using RG2012N-4021-C-T5?

A: MCU08050F4021BP500 is functionally compatible for most applications. However, its operating temperature range extends only to 125°C compared to the main part's 155°C. Applications requiring operation above 125°C require alternative selection.

Q: Why does TNPW08054K02BYEA have higher power rating?

A: TNPW08054K02BYEA is rated for 0.26W compared to the main part's 0.125W. This higher power rating accommodates applications with greater power dissipation requirements while maintaining the same 0805 package footprint. The part also extends operating temperature to 175°C.

Q: Are all substitute parts AEC-Q200 qualified?

A: All Susumu RG series substitutes and Vishay Dale TNPW08054K02BYEA carry AEC-Q200 automotive qualification. The Vishay Beyschlag MCU08050F4021BP500 does not carry AEC-Q200 designation. Automotive applications requiring AEC-Q200 compliance should select from the Susumu or Vishay Dale options.

Q: What packaging formats are available for these substitutes?

A: All substitute parts are supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The main part RG2012N-4021-C-T5 was supplied in bulk format, requiring conversion to tape and reel for modern manufacturing environments.

Q: Can tolerance specifications be mixed within a single design?

A: Tolerance specifications should be evaluated based on circuit requirements. Mixing different tolerance parts (±0.25%, ±0.1%, ±0.05%, ±0.02%) within a single design is permissible if individual component tolerance requirements are met. Critical precision circuits may require uniform tolerance specifications across all resistor networks.

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