RG2012N-1273-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-1273-C-T5 is a 127 kOhms ±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 obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility while offering improved specifications or active product status.

Substiute Parts

RG2012N-1273-C-T5

SusumuIn Stock: 696RG2012N-1273-C-T5 Datasheet

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RG2012N-1273-B-T5

SusumuIn Stock: 963RG2012N-1273-B-T5 Datasheet

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RG2012N-1273-W-T1

SusumuIn Stock: 791RG2012N-1273-W-T1 Datasheet

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RG2012N-1273-W-T5

SusumuIn Stock: 855RG2012N-1273-W-T5 Datasheet

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TNPW0805127KBYEA

Vishay DaleIn Stock: 845TNPW0805127KBYEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RG2012N-1273-C-T5 is determined by the following critical parameters that must remain constant or improve:

Mandatory Compatibility Parameters:

• Resistance value: 127 kOhms (exact match required)
• Package type: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Allowable Upgrade Parameters:

• Tolerance: Can improve from ±0.25% to ±0.1% or ±0.05%
• Power rating: Can equal or exceed 0.125W
• Operating temperature range: Can equal or extend the upper limit
• Product status: Active status preferred over obsolete

All substitute parts listed maintain identical resistance, package, composition, and automotive qualification while offering improved tolerance specifications and active product availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Susumu RG Series):

The RG2012N-1273-B-T5, RG2012N-1273-W-T1, and RG2012N-1273-W-T5 are direct Susumu RG series substitutes. All three maintain identical electrical specifications with the exception of improved tolerance ratings. The RG2012N-1273-W-T1 and RG2012N-1273-W-T5 offer the tightest tolerance at ±0.05%, while the RG2012N-1273-B-T5 provides ±0.1% tolerance. All three are active products available in Tape & Reel packaging, addressing the obsolescence of the original part.

Cross-Manufacturer Substitute (Vishay Dale):

The TNPW0805127KBYEA from Vishay Dale (TNPW e3 series) provides an alternative from a different manufacturer. This part offers ±0.1% tolerance and increased power rating of 0.26W compared to the original 0.125W. The operating temperature range extends to 175°C, exceeding the original specification. This component includes moisture-resistant coating in addition to anti-sulfur protection. The TNPW0805127KBYEA is an active product with full AEC-Q200 automotive qualification and ROHS3 compliance.

Selection Criteria:

• For applications requiring the original tolerance specification with improved availability, select RG2012N-1273-B-T5
• For applications benefiting from tighter tolerance control, select RG2012N-1273-W-T1 or RG2012N-1273-W-T5
• For applications requiring higher power dissipation capability or extended temperature operation, select TNPW0805127KBYEA
• All substitutes maintain identical package dimensions, composition, and automotive qualification

Frequently Asked Questions (FAQ)

Q: Can the RG2012N-1273-B-T5 be used as a direct replacement for the RG2012N-1273-C-T5?

A: Yes. The RG2012N-1273-B-T5 is a direct substitute with identical resistance, package, power rating, and operating temperature range. The tolerance improves from ±0.25% to ±0.1%, which is a compatible upgrade. Both parts are thin film, anti-sulfur, AEC-Q200 qualified, and ROHS3 compliant.

Q: What is the difference between the RG2012N-1273-W-T1 and RG2012N-1273-W-T5?

A: Both parts are identical in electrical and mechanical specifications. The difference is in packaging configuration. The T1 designation indicates one packaging format while T5 indicates another. Both offer ±0.05% tolerance and are active products. Selection between these two depends on your procurement and assembly requirements.

Q: Why does the TNPW0805127KBYEA have a higher power rating of 0.26W?

A: The TNPW0805127KBYEA from Vishay Dale is rated for 0.26W power dissipation compared to the original 0.125W. This is a specification difference between manufacturers for the same 0805 package size. The higher power rating does not affect compatibility; it indicates the part can safely dissipate more power if required by the application.

Q: Are all substitute parts available in the same packaging format?

A: The original RG2012N-1273-C-T5 is supplied in bulk packaging. All substitute parts (RG2012N-1273-B-T5, RG2012N-1273-W-T1, RG2012N-1273-W-T5, and TNPW0805127KBYEA) are supplied in Tape & Reel (TR) format. This is standard for active production parts and does not affect electrical or mechanical compatibility.

Q: Can I use the TNPW0805127KBYEA in a circuit designed for the RG2012N-1273-C-T5?

A: Yes. The TNPW0805127KBYEA is electrically and mechanically compatible. It maintains the same 127 kOhms resistance, 0805 package, thin film composition, and AEC-Q200 qualification. The improved tolerance (±0.1% vs ±0.25%), higher power rating (0.26W vs 0.125W), and extended temperature range (-55°C to 175°C vs -55°C to 155°C) are all compatible upgrades that do not compromise circuit function.

Q: What does the product status "Obsolete" mean for the original part?

A: Obsolete status indicates the RG2012N-1273-C-T5 is no longer in active production. While existing inventory may be available, the part will not be manufactured going forward. All listed substitute parts have Active status, ensuring long-term availability and continued manufacturing support.

Q: Are all these parts suitable for automotive applications?

A: Yes. All parts listed, including the original RG2012N-1273-C-T5 and all substitutes, carry AEC-Q200 automotive qualification. This certification confirms compliance with automotive industry reliability and quality standards.