RG2012N-122-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012N-122-B-T1 is a 1.2 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. Manufactured by Susumu, this component features anti-sulfur coating and automotive AEC-Q200 qualification, suitable for high-reliability applications in harsh environments. The part carries Obsolete product status, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure supply chain availability.

Key Parameters

Parameter	Value
Resistance	1.2 kOhms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG2012N-122-B-T1 is determined by strict equivalence in the following critical parameters:

Primary Substitution Criteria:

Resistance value: 1.2 kOhms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Power rating: 0.125W (1/8W) (exact match required)
Composition: Thin Film (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)
Automotive AEC-Q200 qualification (required for equivalent substitution)

Secondary Substitution Criteria:

Tolerance: ±0.1% or tighter (±0.05%, ±0.02%)
Temperature coefficient: ±10ppm/°C or tighter (±5ppm/°C)
Packaging format: Tape & Reel (TR) preferred for active parts

Parts are grouped into three categories:

Direct Substitutes (Same Tolerance): Parts with ±0.1% tolerance and identical electrical specifications
Upgrade Substitutes (Tighter Tolerance): Parts with ±0.05% or ±0.02% tolerance, offering improved precision while maintaining all other specifications
Cross-Manufacturer Equivalents: Parts from alternative manufacturers meeting identical electrical and mechanical requirements

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	AEC-Q200	Product Status	Inventory (Pcs)
RG2012N-122-B-T1	Susumu	1.2 kΩ	±0.1%	0.125	±10	0805	Yes	Obsolete	901
RG2012N-122-B-T5	Susumu	1.2 kΩ	±0.1%	0.125	±10	0805	Yes	Active	899
RG2012V-122-B-T5	Susumu	1.2 kΩ	±0.1%	0.125	±5	0805	Yes	Active	807
RG2012N-122-W-T1	Susumu	1.2 kΩ	±0.05%	0.125	±10	0805	Yes	Active	1012
RG2012N-122-W-T5	Susumu	1.2 kΩ	±0.05%	0.125	±10	0805	Yes	Active	1173
RG2012V-122-W-T1	Susumu	1.2 kΩ	±0.05%	0.125	±5	0805	Yes	Active	944
RG2012V-122-W-T5	Susumu	1.2 kΩ	±0.05%	0.125	±5	0805	Yes	Active	667
RG2012V-122-P-T1	Susumu	1.2 kΩ	±0.02%	0.125	±5	0805	Yes	Active	1642
ERA-6ARB122V	Panasonic	1.2 kΩ	±0.1%	0.125	±10	0805	Yes	Active	3522
ERA-6ARW122V	Panasonic	1.2 kΩ	±0.05%	0.125	±10	0805	Yes	Active	3067
RT0805WRB071K2L	YAGEO	1.2 kΩ	±0.05%	0.125	±10	0805	No	Active	936

Engineering Selection Recommendations

Direct Substitution (Same Tolerance ±0.1%):

RG2012N-122-B-T5 is the primary direct substitute for RG2012N-122-B-T1. Both parts are manufactured by Susumu with identical electrical specifications (1.2 kOhms ±0.1%, 0.125W, ±10ppm/°C). The RG2012N-122-B-T5 carries Active product status and is available in Tape & Reel packaging. This part provides functional equivalence with improved supply chain availability.

ERA-6ARB122V (Panasonic) provides cross-manufacturer equivalence with identical tolerance and temperature coefficient specifications. This part maintains AEC-Q200 automotive qualification and Active product status with significantly higher inventory availability (3522 Pcs).

Upgrade Substitution (Tighter Tolerance ±0.05%):

RG2012N-122-W-T1 and RG2012N-122-W-T5 offer improved tolerance performance (±0.05%) while maintaining all other electrical and mechanical specifications. Both parts are Active and available in Tape & Reel packaging. Selection between T1 and T5 variants depends on packaging format requirements.

RG2012V-122-W-T1 and RG2012V-122-W-T5 provide ±0.05% tolerance with improved temperature coefficient (±5ppm/°C versus ±10ppm/°C), offering superior stability across the operating temperature range.

ERA-6ARW122V (Panasonic) delivers ±0.05% tolerance with AEC-Q200 qualification and Active status. This part is suitable for applications requiring improved precision without changing package or power specifications.

Premium Upgrade Substitution (Tightest Tolerance ±0.02%):

RG2012V-122-P-T1 provides the highest precision option with ±0.02% tolerance and ±5ppm/°C temperature coefficient. This part is Active with the highest inventory level (1642 Pcs) and is recommended for precision-critical applications.

Non-Automotive Alternative:

RT0805WRB071K2L (YAGEO) meets all electrical and mechanical specifications with ±0.05% tolerance. This part lacks AEC-Q200 automotive qualification and is suitable only for non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-122-B-T5 be used as a direct replacement for RG2012N-122-B-T1?

A: Yes. Both parts share identical electrical specifications (1.2 kOhms ±0.1%, 0.125W, ±10ppm/°C) and package format (0805). The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel versus bulk). Functional performance is equivalent.

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

A: The RG2012V series offers improved temperature coefficient performance (±5ppm/°C) compared to the RG2012N series (±10ppm/°C). Both series maintain identical resistance, tolerance, power rating, and package specifications. Selection depends on temperature stability requirements.

Q: Can I substitute a ±0.05% tolerance part for a ±0.1% tolerance requirement?

A: Yes. Tighter tolerance parts (±0.05%, ±0.02%) are functionally superior and directly substitutable for applications specifying ±0.1% tolerance. The component will exceed the original specification.

Q: What is the significance of the T1 and T5 suffixes in Susumu part numbers?

A: The T1 and T5 suffixes indicate different packaging formats. T1 represents standard Tape & Reel packaging, while T5 represents alternative Tape & Reel configuration. Both formats are compatible with standard pick-and-place equipment.

Q: Is ERA-6ARB122V suitable for automotive applications?

A: Yes. ERA-6ARB122V carries AEC-Q200 automotive qualification identical to the original RG2012N-122-B-T1. This part is approved for automotive-grade applications.

Q: Why does RT0805WRB071K2L lack AEC-Q200 qualification?

A: RT0805WRB071K2L is a standard commercial-grade thin film resistor without automotive qualification. This part is suitable only for non-automotive applications. For automotive designs, select parts with explicit AEC-Q200 rating.

Q: What inventory considerations should guide part selection?

A: RG2012V-122-P-T1 (1642 Pcs) and ERA-6ARB122V (3522 Pcs) offer the highest inventory levels. For immediate availability, ERA-6ARB122V provides the largest stock position with equivalent electrical performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the original RG2012N-122-B-T1 environmental specification.

Q: Can I mix different manufacturers in the same design?

A: Yes. All listed parts meet identical electrical specifications, package format, and AEC-Q200 qualification. Cross-manufacturer substitution is functionally valid. Verify PCB assembly process compatibility with different manufacturer specifications if required.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message