RG2012N-2490-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012N-2490-B-T1 is a 249 Ohm ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component features anti-sulfur construction and automotive AEC-Q200 qualification, suitable for high-reliability applications in harsh environments. The part is manufactured by Susumu and carries Obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Resistance	249 Ohms
Tolerance	±0.1%
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 to 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 Matching Parameters:

Resistance value: 249 Ohms
Package type: 0805 (2012 Metric)
Composition: Thin Film
Automotive qualification: AEC-Q200
Anti-sulfur feature
RoHS3 compliance
MSL rating: 1 (Unlimited)

Variable Parameters Allowing Substitution:

Tolerance (±0.02% to ±0.1%)
Power rating (0.125W to 0.26W)
Temperature coefficient (±5ppm/°C to ±10ppm/°C)
Packaging format (Tape & Reel, Cut Tape & Digi-Reel)
Product status (Active substitutes acceptable for Obsolete main part)
Operating temperature upper limit (155°C to 175°C)

Substitute parts must maintain or exceed the electrical and mechanical specifications of the main part. Parts with improved tolerance, lower temperature coefficient, or higher power rating are classified as upgrades and provide enhanced performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Packaging	Product Status	Inventory (Pcs)
RG2012N-2490-B-T1	Susumu	249 Ω	±0.1%	0.125	±10	Bulk	Obsolete	1034
RG2012N-2490-B-T5	Susumu	249 Ω	±0.1%	0.125	±10	Tape & Reel	Active	5520
RG2012P-2490-B-T5	Susumu	249 Ω	±0.1%	0.125	±25	Cut Tape & Digi-Reel	Active	21229
RG2012N-2490-W-T1	Susumu	249 Ω	±0.05%	0.125	±10	Tape & Reel	Active	700
RG2012N-2490-W-T5	Susumu	249 Ω	±0.05%	0.125	±10	Tape & Reel	Active	640
RG2012V-2490-B-T5	Susumu	249 Ω	±0.1%	0.125	±5	Tape & Reel	Active	963
RG2012V-2490-P-T1	Susumu	249 Ω	±0.02%	0.125	±5	Tape & Reel	Active	894
RG2012V-2490-W-T1	Susumu	249 Ω	±0.05%	0.125	±5	Tape & Reel	Active	1150
RG2012V-2490-W-T5	Susumu	249 Ω	±0.05%	0.125	±5	Tape & Reel	Active	751
TNPW0805249RBYEA	Vishay Dale	249 Ω	±0.1%	0.26	±10	Tape & Reel	Active	1101

Engineering Selection Recommendations

Direct Equivalent (Same Specifications): RG2012N-2490-B-T5 is the direct equivalent to RG2012N-2490-B-T1, differing only in packaging format (Tape & Reel versus Bulk). Both parts maintain identical electrical specifications: 249 Ohms ±0.1%, 0.125W power rating, ±10ppm/°C temperature coefficient, and -55°C to 155°C operating range. This part is Active status and carries 5520 units in inventory.

Packaging Alternatives (Same Electrical Specifications): RG2012P-2490-B-T5 provides identical electrical performance in Cut Tape & Digi-Reel packaging with highest inventory availability (21229 units). Temperature coefficient specification is ±25ppm/°C, which is less stringent than the main part. This part is suitable for applications where packaging format is the primary selection criterion.

Upgraded Performance Options (Enhanced Specifications): Parts with improved tolerance and lower temperature coefficient are available from Susumu's RG series:

RG2012V-2490-B-T5: ±0.1% tolerance, ±5ppm/°C temperature coefficient
RG2012N-2490-W-T1 and RG2012N-2490-W-T5: ±0.05% tolerance, ±10ppm/°C temperature coefficient
RG2012V-2490-W-T1 and RG2012V-2490-W-T5: ±0.05% tolerance, ±5ppm/°C temperature coefficient
RG2012V-2490-P-T1: ±0.02% tolerance, ±5ppm/°C temperature coefficient (highest precision)

Cross-Manufacturer Alternative: TNPW0805249RBYEA (Vishay Dale TNPW e3 series) provides equivalent 249 Ohm ±0.1% specification with enhanced power rating (0.26W versus 0.125W) and extended operating temperature range (-55°C to 175°C). This part is Active status with 1101 units in inventory. All parts maintain AEC-Q200 automotive qualification, anti-sulfur construction, RoHS3 compliance, and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-2490-B-T5 be used as a direct replacement for RG2012N-2490-B-T1?

A: Yes. RG2012N-2490-B-T5 is electrically and mechanically identical to RG2012N-2490-B-T1. The only difference is packaging format: RG2012N-2490-B-T5 is supplied in Tape & Reel format while RG2012N-2490-B-T1 is supplied in Bulk format. Both parts meet identical electrical specifications and AEC-Q200 automotive qualification requirements.

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 maintain the same 249 Ohm resistance value, 0.125W power rating, and AEC-Q200 qualification. RG2012V parts provide improved thermal stability for applications requiring tighter performance over temperature variations.

Q: Can I substitute RG2012P-2490-B-T5 for the main part?

A: RG2012P-2490-B-T5 is electrically compatible with identical 249 Ohm ±0.1% specifications and 0.125W power rating. However, the temperature coefficient is ±25ppm/°C compared to ±10ppm/°C for the main part. This part is suitable for applications where the relaxed temperature coefficient specification is acceptable. Packaging is Cut Tape & Digi-Reel format.

Q: What are the advantages of upgraded tolerance parts like RG2012V-2490-P-T1?

A: RG2012V-2490-P-T1 offers ±0.02% tolerance compared to ±0.1% for the main part, providing four times tighter resistance accuracy. It also features ±5ppm/°C temperature coefficient versus ±10ppm/°C. These upgrades are beneficial for precision analog circuits, measurement instrumentation, and applications requiring tight component matching.

Q: Is the Vishay Dale TNPW0805249RBYEA a suitable substitute?

A: TNPW0805249RBYEA is electrically compatible with 249 Ohm ±0.1% specification and maintains AEC-Q200 automotive qualification. Key differences include higher power rating (0.26W versus 0.125W) and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). This part is suitable for applications requiring higher power dissipation capability or operation at elevated temperatures.

Q: What packaging formats are available for 249 Ohm substitutes?

A: Available packaging formats include Bulk (RG2012N-2490-B-T1), Tape & Reel (RG2012N-2490-B-T5, RG2012N-2490-W-T1, RG2012N-2490-W-T5, RG2012V-2490-B-T5, RG2012V-2490-P-T1, RG2012V-2490-W-T1, RG2012V-2490-W-T5, TNPW0805249RBYEA), and Cut Tape & Digi-Reel (RG2012P-2490-B-T5). Selection depends on production volume and assembly equipment compatibility.

Q: Do all substitute parts maintain AEC-Q200 automotive qualification?

A: Yes. All listed substitute parts maintain AEC-Q200 automotive qualification, anti-sulfur construction, RoHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. These specifications ensure compatibility with automotive and high-reliability applications.

Q: What is the significance of the temperature coefficient specification?

A: Temperature coefficient (ppm/°C) indicates how much the resistance value changes per degree Celsius of temperature variation. Lower values indicate better thermal stability. The main part specifies ±10ppm/°C. Upgraded parts with ±5ppm/°C or ±25ppm/°C are available depending on application requirements for thermal performance.

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