RG2012N-6490-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-6490-C-T5 is a 649 Ohm ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is manufactured by Susumu and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility while offering enhanced performance characteristics or improved availability.

Key Parameters

Parameter	Value
Resistance	649 Ohms
Tolerance	±0.25%
Power Rating	0.125W (1/8W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C to 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-6490-C-T5 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Resistance value: 649 Ohms (exact match required)
Package type: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Automotive qualification: AEC-Q200 (exact match required)
Anti-sulfur feature: Required for equivalent performance

Performance Enhancement Parameters:

Tolerance: Substitute parts offer ±0.1%, ±0.05%, or ±0.02% (tighter than original ±0.25%)
Temperature Coefficient: Substitute parts offer ±5ppm/°C or ±10ppm/°C
Power Rating: Substitute parts rated at 0.125W or 0.26W (equal or higher)
Operating Temperature: Substitute parts support -55°C to 155°C or -55°C to 175°C

All substitute parts maintain identical mechanical dimensions, termination count, and regulatory compliance (RoHS3, REACH Unaffected, EAR99).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Status	Inventory
RG2012N-6490-C-T5	Susumu	649 Ω	±0.25%	0.125	±10	-55 to 155	Obsolete	980 Pcs
RG2012N-6490-B-T5	Susumu	649 Ω	±0.1%	0.125	±10	-55 to 155	Active	758 Pcs
RG2012N-6490-W-T1	Susumu	649 Ω	±0.05%	0.125	±10	-55 to 155	Active	712 Pcs
RG2012N-6490-W-T5	Susumu	649 Ω	±0.05%	0.125	±10	-55 to 155	Active	673 Pcs
RG2012V-6490-B-T5	Susumu	649 Ω	±0.1%	0.125	±5	-55 to 155	Active	682 Pcs
RG2012V-6490-P-T1	Susumu	649 Ω	±0.02%	0.125	±5	-55 to 155	Active	677 Pcs
RG2012V-6490-W-T1	Susumu	649 Ω	±0.05%	0.125	±5	-55 to 155	Active	696 Pcs
RG2012V-6490-W-T5	Susumu	649 Ω	±0.05%	0.125	±5	-55 to 155	Active	879 Pcs
TNPW0805649RBYEA	Vishay Dale	649 Ω	±0.1%	0.26	±10	-55 to 175	Active	970 Pcs

Engineering Selection Recommendations

Primary Substitutes (Susumu RG Series):

The Susumu RG2012N and RG2012V series parts provide direct substitution with improved tolerance specifications. All active Susumu alternatives maintain identical package geometry, anti-sulfur coating, and AEC-Q200 automotive qualification. Selection between RG2012N and RG2012V variants depends on temperature coefficient requirements: RG2012N variants specify ±10ppm/°C while RG2012V variants specify ±5ppm/°C.

Within the RG2012N series, RG2012N-6490-W-T5 and RG2012N-6490-W-T1 offer ±0.05% tolerance with identical temperature coefficient and operating range. Within the RG2012V series, RG2012V-6490-W-T5 provides the highest inventory availability (879 Pcs) with ±0.05% tolerance and ±5ppm/°C temperature coefficient.

Cross-Manufacturer Substitute (Vishay Dale):

The TNPW0805649RBYEA from Vishay Dale provides an alternative from a different manufacturer while maintaining 649 Ohm resistance, 0805 package, and AEC-Q200 qualification. This part offers higher power rating (0.26W versus 0.125W) and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). The TNPW series is rated for moisture-resistant performance and maintains ROHS3 compliance and unlimited moisture sensitivity level.

Availability Consideration:

The original RG2012N-6490-C-T5 maintains the highest inventory level (980 Pcs). Among active substitutes, RG2012V-6490-W-T5 (879 Pcs) and TNPW0805649RBYEA (970 Pcs) provide comparable availability.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-6490-B-T5 directly replace RG2012N-6490-C-T5?

A: Yes. Both parts share identical resistance (649 Ohms), package (0805), power rating (0.125W), temperature coefficient (±10ppm/°C), and operating range (-55°C to 155°C). The RG2012N-6490-B-T5 provides tighter tolerance (±0.1% versus ±0.25%), making it a direct upgrade substitute.

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

A: The primary difference is temperature coefficient specification. RG2012N variants specify ±10ppm/°C while RG2012V variants specify ±5ppm/°C. All other electrical and mechanical parameters remain identical for parts with matching tolerance and packaging designations.

Q: Is TNPW0805649RBYEA compatible with the original part?

A: TNPW0805649RBYEA is mechanically and electrically compatible in terms of resistance value, package type, and AEC-Q200 qualification. However, it differs in power rating (0.26W versus 0.125W), maximum operating temperature (175°C versus 155°C), and manufacturer. Compatibility depends on circuit requirements for these enhanced specifications.

Q: What does the tolerance specification mean for circuit performance?

A: Tolerance defines the maximum deviation from the nominal 649 Ohm value. The original part allows ±0.25% deviation (648.38 to 649.62 Ohms). Substitute parts with ±0.1%, ±0.05%, or ±0.02% tolerance provide tighter resistance control, reducing circuit performance variation across production batches.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, matching the regulatory profile of the original RG2012N-6490-C-T5.

Q: Which substitute offers the best temperature stability?

A: RG2012V-6490-P-T1 provides the best temperature stability with ±0.02% tolerance and ±5ppm/°C temperature coefficient. This part is suitable for precision applications requiring minimal resistance drift across the operating temperature range.

Q: Can I use a higher power-rated substitute in a circuit designed for 0.125W?

A: Yes. A higher power-rated component (such as TNPW0805649RBYEA at 0.26W) can be used in circuits designed for lower power dissipation. The component will operate within safe thermal limits. However, physical dimensions remain identical (0805 package), so board layout compatibility is maintained.

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