RG2012P-124-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012P-124-B-T1 is a 120 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component features anti-sulfur coating and automotive AEC-Q200 qualification, suitable for high-reliability applications requiring precision resistance values. The part is currently obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value
Resistance	120 kOhms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package / Case	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-124-B-T1 is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 120 kOhms
Package / Case: 0805 (2012 Metric)
Composition: Thin Film
Tolerance: ±0.1% or tighter
Power rating: 0.125W minimum
RoHS3 compliance
MSL rating: 1 (Unlimited)

Acceptable Variation Parameters:

Temperature coefficient: ±25ppm/°C or better (lower values acceptable)
Operating temperature range: -55°C minimum to 155°C maximum (extended ranges acceptable)
Packaging format: Tape & Reel (TR) or Cut Tape (CT) acceptable for manufacturing environments
Height seated maximum: up to 0.024" (0.60mm) acceptable
AEC-Q200 rating: preferred for automotive applications but not mandatory for non-automotive use cases

Substitute parts are grouped into three categories: direct equivalents (identical specifications), upgrades with improved tolerance, and upgrades with enhanced power rating or temperature coefficient performance.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp Range	AEC-Q200	Anti-Sulfur	Status
RG2012P-124-B-T1	Susumu	120k	±0.1%	0.125	±25	-55 to 155°C	Yes	Yes	Obsolete
RG2012P-124-B-T5	Susumu	120k	±0.1%	0.125	±25	-55 to 155°C	Yes	Yes	Active
RG2012N-124-B-T5	Susumu	120k	±0.1%	0.125	±10	-55 to 155°C	Yes	Yes	Active
RG2012N-124-W-T5	Susumu	120k	±0.05%	0.125	±10	-55 to 155°C	Yes	Yes	Active
RG2012P-124-W-T5	Susumu	120k	±0.05%	0.125	±25	-55 to 155°C	Yes	Yes	Active
ERA-6AEB124V	Panasonic	120k	±0.1%	0.125	±25	-55 to 155°C	Yes	No	Active
MCU08050D1203BP100	Vishay	120k	±0.1%	0.125	±25	-55 to 125°C	No	Yes	Active
MCU08050D1203BP500	Vishay	120k	±0.1%	0.125	±25	-55 to 125°C	No	Yes	Active
RT0805BRD07120KL	YAGEO	120k	±0.1%	0.125	±25	-55 to 155°C	No	No	Active
TNPW0805120KBEEN	Vishay Dale	120k	±0.1%	0.26	±25	-55 to 175°C	Yes	Yes	Active
TNPW0805120KBEEA	Vishay Dale	120k	±0.1%	0.26	±25	-55 to 175°C	Yes	Yes	Active

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications):

RG2012P-124-B-T5 is the direct equivalent to RG2012P-124-B-T1. Both parts share identical electrical specifications (120 kOhms ±0.1%, 0.125W, ±25ppm/°C) and mechanical dimensions (0805 package). The primary difference is packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete). This part is recommended as the primary replacement for direct substitution in manufacturing environments.

Upgraded Equivalents with Improved Temperature Coefficient:

RG2012N-124-B-T5 and RG2012N-124-W-T5 offer improved temperature coefficient performance (±10ppm/°C vs. ±25ppm/°C) while maintaining all other specifications. RG2012N-124-B-T5 maintains ±0.1% tolerance, while RG2012N-124-W-T5 provides tighter ±0.05% tolerance. These upgrades are suitable for applications requiring enhanced thermal stability without design modification.

Upgraded Equivalents with Improved Tolerance:

RG2012P-124-W-T5 provides ±0.05% tolerance (vs. ±0.1%) while maintaining ±25ppm/°C temperature coefficient. This upgrade is applicable for precision measurement and calibration circuits.

Cross-Manufacturer Alternatives:

ERA-6AEB124V (Panasonic), MCU08050D1203BP100/BP500 (Vishay), and RT0805BRD07120KL (YAGEO) provide electrical equivalence with identical 120 kOhms ±0.1% specifications and 0.125W power rating. All are ROHS3 compliant and MSL 1 rated. ERA-6AEB124V maintains full AEC-Q200 automotive qualification. MCU series parts operate to 125°C maximum (vs. 155°C). RT0805BRD07120KL lacks AEC-Q200 and anti-sulfur features but offers high inventory availability.

Enhanced Power Rating Alternative:

TNPW0805120KBEEN and TNPW0805120KBEEA (Vishay Dale) provide 0.26W power rating (vs. 0.125W) in the same 0805 package with extended operating temperature to 175°C. These parts are suitable for applications requiring higher power dissipation margin or elevated temperature operation while maintaining AEC-Q200 and anti-sulfur features.

Automotive Applications:

For automotive or high-reliability applications, RG2012P-124-B-T5, RG2012N-124-B-T5, RG2012N-124-W-T5, RG2012P-124-W-T5, ERA-6AEB124V, and TNPW series parts maintain AEC-Q200 qualification. MCU and RT series parts lack automotive certification and are suitable only for non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RG2012P-124-B-T5 be used as a direct replacement for RG2012P-124-B-T1?

A: Yes. RG2012P-124-B-T5 is electrically and mechanically identical to RG2012P-124-B-T1. Both parts specify 120 kOhms ±0.1%, 0.125W, ±25ppm/°C, 0805 package, AEC-Q200 rating, and anti-sulfur coating. The difference is packaging format (Tape & Reel) and product status (Active). No circuit modification is required.

Q: What is the difference between RG2012N and RG2012P series?

A: The RG2012N series provides improved temperature coefficient of ±10ppm/°C compared to RG2012P at ±25ppm/°C. Both series maintain identical resistance, tolerance, power rating, and package specifications. Selection depends on thermal stability requirements of the application.

Q: Can I use TNPW0805120KBEEN instead of RG2012P-124-B-T1?

A: Yes, with design considerations. TNPW0805120KBEEN provides the same 120 kOhms ±0.1% resistance and maintains AEC-Q200 and anti-sulfur features. However, it offers 0.26W power rating (vs. 0.125W) and extended operating temperature to 175°C (vs. 155°C). Physical height is 0.022" (vs. 0.020" maximum). Verify PCB layout clearance before substitution.

Q: Are MCU08050D1203BP100 and MCU08050D1203BP500 interchangeable?

A: Yes. Both MCU parts are electrically identical with 120 kOhms ±0.1%, 0.125W, ±25ppm/°C specifications. The part number suffix indicates packaging quantity (100 and 500 piece reels). No electrical or mechanical difference exists between them.

Q: What is the operating temperature limitation of MCU series parts?

A: MCU08050D1203BP100 and MCU08050D1203BP500 operate from -55°C to 125°C maximum, compared to 155°C for RG2012P-124-B-T1. For applications requiring operation above 125°C, use RG series, ERA-6AEB124V, RT0805BRD07120KL, or TNPW series parts.

Q: Does RT0805BRD07120KL have automotive qualification?

A: No. RT0805BRD07120KL lacks AEC-Q200 certification and anti-sulfur coating. It is suitable for commercial and industrial applications but not recommended for automotive or high-reliability environments requiring automotive-grade components.

Q: Can I substitute ERA-6AEB124V for RG2012P-124-B-T1 in automotive applications?

A: Yes. ERA-6AEB124V maintains AEC-Q200 automotive qualification and identical electrical specifications (120 kOhms ±0.1%, 0.125W, ±25ppm/°C). The part lacks anti-sulfur coating specified in the original part. Verify application requirements for sulfur resistance before substitution.

Q: What is the difference between ±0.1% and ±0.05% tolerance?

A: Tolerance specifies the maximum deviation from the nominal resistance value. ±0.1% tolerance allows ±120 ohms deviation from 120 kOhms (range: 119.88k to 120.12k ohms). ±0.05% tolerance allows ±60 ohms deviation (range: 119.94k to 120.06k ohms). Tighter tolerance is required for precision measurement, filtering, and calibration circuits.

Q: Is Tape & Reel packaging compatible with my manufacturing process?

A: Tape & Reel (TR) packaging is standard for automated pick-and-place assembly. Cut Tape (CT) packaging is suitable for manual assembly or lower-volume production. Both formats contain identical components. Verify your assembly equipment specifications for tape width and component pitch compatibility.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the component requires no special moisture control during storage or handling. Parts can be stored at room temperature and humidity without desiccant packaging or baking requirements prior to soldering. This simplifies supply chain and manufacturing logistics.

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