RG2012N-301-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012N-301-B-T1 is a 300 Ohms ±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, designed for high-precision applications requiring tight tolerance and stable performance across the -55°C to 155°C operating temperature range. The part is currently listed as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Resistance	300 Ohms
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
Features	Anti-Sulfur, Automotive AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG2012N-301-B-T1 is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 300 Ohms
Package / Case: 0805 (2012 Metric)
Power rating: 0.125W (1/8W) minimum
Composition: Thin Film
Operating temperature range: -55°C ~ 155°C minimum
RoHS3 compliance
Moisture Sensitivity Level: 1

Allowable Variation Parameters:

Tolerance: ±0.1% or tighter (±0.05%, ±0.02%)
Temperature coefficient: ±10ppm/°C or lower (±5ppm/°C)
Packaging format: Tape & Reel (TR) acceptable as functional equivalent to bulk
Automotive AEC-Q200 rating: Preferred but not mandatory for all applications
Anti-sulfur feature: Preferred but not mandatory for all applications

Substitute parts are grouped into direct equivalents (matching all parameters) and upgrades (improved tolerance or temperature coefficient specifications).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	AEC-Q200	Product Status	Inventory (Pcs)
RG2012N-301-B-T1	Susumu	300Ω	±0.1%	0.125	±10	-55 ~ 155	0805	Yes	Obsolete	731
RG2012N-301-B-T5	Susumu	300Ω	±0.1%	0.125	±10	-55 ~ 155	0805	Yes	Active	703
RG2012P-301-B-T5	Susumu	300Ω	±0.1%	0.125	±25	-55 ~ 155	0805	Yes	Active	29797
RG2012N-301-W-T1	Susumu	300Ω	±0.05%	0.125	±10	-55 ~ 155	0805	Yes	Active	2556
RG2012N-301-W-T5	Susumu	300Ω	±0.05%	0.125	±10	-55 ~ 155	0805	Yes	Active	886
RG2012V-301-B-T5	Susumu	300Ω	±0.1%	0.125	±5	-55 ~ 155	0805	Yes	Active	940
RG2012V-301-P-T1	Susumu	300Ω	±0.02%	0.125	±5	-55 ~ 155	0805	Yes	Active	1106
RG2012V-301-W-T1	Susumu	300Ω	±0.05%	0.125	±5	-55 ~ 155	0805	Yes	Active	980
RG2012V-301-W-T5	Susumu	300Ω	±0.05%	0.125	±5	-55 ~ 155	0805	Yes	Active	890
RT0805WRB07300RL	YAGEO	300Ω	±0.05%	0.125	±10	-55 ~ 155	0805	No	Active	1079
TNPW0805300RBYEA	Vishay Dale	300Ω	±0.1%	0.26	±10	-55 ~ 175	0805	Yes	Active	821

Engineering Selection Recommendations

Direct Equivalent (Identical Electrical and Mechanical Specifications):

RG2012N-301-B-T5 is the direct equivalent to RG2012N-301-B-T1. Both parts share identical electrical specifications (300Ω ±0.1%, 0.125W, ±10ppm/°C) and mechanical dimensions (0805 package). The primary difference is packaging format (Tape & Reel versus bulk). RG2012N-301-B-T5 is active in production with 703 units in stock.

Susumu RG Series Upgrades (Improved Tolerance):

RG2012N-301-W-T1 and RG2012N-301-W-T5 provide tighter tolerance (±0.05%) while maintaining identical power rating, temperature coefficient, and operating range. These parts are suitable for applications requiring higher precision than the original ±0.1% specification.

Susumu RG Series Upgrades (Improved Temperature Coefficient):

RG2012V-301-B-T5, RG2012V-301-W-T1, RG2012V-301-W-T5, and RG2012V-301-P-T1 feature reduced temperature coefficient (±5ppm/°C or ±0.02% tolerance) compared to the original ±10ppm/°C specification. These parts provide enhanced stability across the operating temperature range.

Cross-Manufacturer Alternatives:

RT0805WRB07300RL (YAGEO) provides equivalent electrical performance (300Ω ±0.05%, 0.125W) in 0805 package. This part lacks automotive AEC-Q200 certification and anti-sulfur coating. Use only in applications where automotive qualification is not required.

TNPW0805300RBYEA (Vishay Dale) offers higher power rating (0.26W) and extended operating temperature range (-55°C to 175°C) with automotive AEC-Q200 qualification. This part is suitable for applications requiring higher power dissipation or elevated temperature operation.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-301-B-T5 directly replace RG2012N-301-B-T1 in production?

A: Yes. RG2012N-301-B-T5 is electrically and mechanically identical to RG2012N-301-B-T1. The difference is packaging format (Tape & Reel versus bulk). Both parts meet the same electrical specifications, dimensional requirements, and automotive AEC-Q200 qualification.

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

A: The RG2012V series features a lower temperature coefficient (±5ppm/°C) compared to RG2012N series (±10ppm/°C). Both series use thin film construction and meet AEC-Q200 automotive standards. RG2012V parts provide superior temperature stability.

Q: Can I use RG2012P-301-B-T5 as a substitute?

A: RG2012P-301-B-T5 matches the tolerance (±0.1%) and power rating (0.125W) of the original part. However, it has a higher temperature coefficient (±25ppm/°C) compared to the original ±10ppm/°C specification. Use only in applications where the higher temperature coefficient is acceptable.

Q: Is RT0805WRB07300RL suitable for automotive applications?

A: RT0805WRB07300RL lacks automotive AEC-Q200 certification and anti-sulfur coating. It is not suitable for automotive applications requiring these qualifications. Use only in non-automotive applications where these certifications are not required.

Q: What is the advantage of TNPW0805300RBYEA over the original part?

A: TNPW0805300RBYEA provides higher power rating (0.26W versus 0.125W) and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). It maintains automotive AEC-Q200 qualification and anti-sulfur coating. Use in applications requiring higher power dissipation or elevated temperature operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited), matching the original part specifications.

Q: What is the difference between T1 and T5 packaging designations?

A: T1 and T5 designations indicate different tape and reel configurations for automated assembly. Both are Tape & Reel formats suitable for pick-and-place equipment. Verify compatibility with your specific assembly equipment before selection.

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