RG2012P-123-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012P-123-B-T1 is a 12 kOhms ±0.1% 0.125W (1/8W) chip resistor in 0805 (2012 Metric) package manufactured by Susumu. This thin film resistor features anti-sulfur coating and automotive AEC-Q200 qualification. The part is currently obsolete, with 1026 pieces available in 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	12 kOhms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Features	Anti-Sulfur, Automotive AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG2012P-123-B-T1 is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 12 kOhms
Package type: 0805 (2012 Metric)
Composition: Thin Film
Tolerance: ±0.1% or tighter (±0.05%)
Power rating: 0.125W minimum
RoHS3 compliance
MSL rating: 1 (Unlimited)

Acceptable Variations:

Temperature coefficient: ±25ppm/°C or ±10ppm/°C (tighter specifications acceptable)
Operating temperature range: -55°C to 125°C minimum (155°C or 175°C acceptable)
Automotive AEC-Q200 rating: acceptable for direct substitution; non-rated acceptable for non-critical applications
Packaging format: Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR) formats are interchangeable
Power rating: 0.26W acceptable as upgrade (higher power dissipation capability)
Height variation: 0.020" to 0.024" (0.50mm to 0.60mm) acceptable

Substitutes are grouped by product status (Active vs. Obsolete) and tolerance specification (±0.1% vs. ±0.05%).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp Range (°C)	AEC-Q200	Product Status	Packaging
RG2012P-123-B-T1	Susumu	12k	±0.1%	0.125	±25	-55 ~ 155	Yes	Obsolete	-
RG2012P-123-B-T5	Susumu	12k	±0.1%	0.125	±25	-55 ~ 155	Yes	Active	CT & Digi-Reel®
RG2012N-123-B-T5	Susumu	12k	±0.1%	0.125	±10	-55 ~ 155	Yes	Active	TR
RG2012N-123-W-T5	Susumu	12k	±0.05%	0.125	±10	-55 ~ 155	Yes	Active	TR
RG2012P-123-W-T5	Susumu	12k	±0.05%	0.125	±25	-55 ~ 155	Yes	Active	TR
ERA-6AEB123V	Panasonic	12k	±0.1%	0.125	±25	-55 ~ 155	Yes	Active	CT & Digi-Reel®
MCU08050D1202BP100	Vishay	12k	±0.1%	0.125	±25	-55 ~ 125	No	Active	TR
MCU08050D1202BP500	Vishay	12k	±0.1%	0.125	±25	-55 ~ 125	No	Active	TR
RT0805BRD0712KL	YAGEO	12k	±0.1%	0.125	±25	-55 ~ 155	No	Active	TR
TNPW080512K0BEEA	Vishay Dale	12k	±0.1%	0.26	±25	-55 ~ 175	Yes	Active	TR
TNPW080512K0BEEN	Vishay Dale	12k	±0.1%	0.26	±25	-55 ~ 175	Yes	Active	TR

Engineering Selection Recommendations

Direct Equivalent (Same Specifications, Active Status):

RG2012P-123-B-T5 is the direct active equivalent from Susumu. It maintains identical electrical specifications (12 kOhms, ±0.1%, 0.125W, ±25ppm/°C) and automotive AEC-Q200 qualification. This part is available in Cut Tape and Digi-Reel® packaging formats with 48,533 pieces in stock.

Upgraded Specifications (Tighter Tolerance, Active Status):

RG2012N-123-B-T5 and RG2012N-123-W-T5 offer improved temperature coefficient (±10ppm/°C) and are available in active status. RG2012N-123-W-T5 provides the tightest tolerance specification at ±0.05%. Both maintain AEC-Q200 qualification and full operating temperature range (-55°C to 155°C).

RG2012P-123-W-T5 offers ±0.05% tolerance while maintaining the ±25ppm/°C temperature coefficient of the original part.

Cross-Manufacturer Alternatives (Active Status, AEC-Q200 Rated):

ERA-6AEB123V (Panasonic) provides identical electrical specifications with AEC-Q200 qualification. TNPW080512K0BEEA and TNPW080512K0BEEN (Vishay Dale) offer higher power rating (0.26W) and extended operating temperature range (-55°C to 175°C) with AEC-Q200 qualification, suitable for applications requiring enhanced thermal performance.

Cross-Manufacturer Alternatives (Active Status, Non-AEC-Q200):

MCU08050D1202BP100, MCU08050D1202BP500 (Vishay Beyschlag), and RT0805BRD0712KL (YAGEO) provide equivalent electrical specifications in active status. These parts lack automotive AEC-Q200 certification and have reduced upper operating temperature limits (125°C for Vishay MCU series). These are suitable for non-automotive applications or where AEC-Q200 qualification is not required.

Frequently Asked Questions (FAQ)

Q: Can RG2012P-123-B-T5 be used as a direct replacement for RG2012P-123-B-T1?

A: Yes. RG2012P-123-B-T5 is the direct active equivalent with identical electrical specifications, package type, and automotive AEC-Q200 qualification. The primary difference is product status (Active vs. Obsolete) and packaging format availability.

Q: What is the difference between RG2012N-123-B-T5 and RG2012P-123-B-T5?

A: Both parts have 12 kOhms resistance and ±0.1% tolerance. RG2012N-123-B-T5 has a tighter temperature coefficient (±10ppm/°C vs. ±25ppm/°C), providing better stability across temperature variations. Both are AEC-Q200 qualified and available in active status.

Q: Can TNPW080512K0BEEA replace RG2012P-123-B-T1 in all applications?

A: TNPW080512K0BEEA is electrically compatible with identical resistance, tolerance, and temperature coefficient. It offers higher power rating (0.26W vs. 0.125W) and extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C). Both are AEC-Q200 qualified. The higher power rating makes it suitable for applications with greater thermal demands.

Q: Are MCU08050D1202BP100 and RT0805BRD0712KL suitable for automotive applications?

A: These parts lack automotive AEC-Q200 certification. MCU08050D1202BP100 has a reduced upper operating temperature limit of 125°C. These parts are suitable for non-automotive applications or where AEC-Q200 qualification is not a design requirement.

Q: What is the significance of the packaging format (CT, Digi-Reel®, TR)?

A: Packaging format affects supply chain logistics and assembly processes. Cut Tape (CT) and Digi-Reel® are suitable for lower-volume or manual assembly operations. Tape & Reel (TR) is standard for high-volume automated assembly. All formats contain identical components; selection depends on production volume and assembly equipment compatibility.

Q: Can RG2012N-123-W-T5 be used where RG2012P-123-B-T1 is specified?

A: Yes. RG2012N-123-W-T5 meets or exceeds all critical parameters: 12 kOhms resistance, ±0.05% tolerance (tighter than ±0.1%), 0.125W power rating, 0805 package, AEC-Q200 qualification, and full operating temperature range. The tighter tolerance and improved temperature coefficient (±10ppm/°C) represent performance upgrades.

Q: What is the difference between ERA-6AEB123V and other cross-manufacturer alternatives?

A: ERA-6AEB123V (Panasonic) maintains identical electrical specifications and AEC-Q200 qualification. It differs from Vishay MCU and YAGEO RT series by including automotive certification. Selection between ERA-6AEB123V and other alternatives depends on design requirements for automotive qualification and preferred supplier relationships.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original RG2012P-123-B-T1 specifications.

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