RG2012N-66R5-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-66R5-C-T5 is a 66.5 Ohm ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is designed for automotive applications and carries AEC-Q200 qualification with anti-sulfur coating. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing production and design requirements. Active alternatives with improved tolerance specifications and enhanced power ratings are available from both Susumu and Vishay Dale manufacturers.

Substiute Parts

RG2012N-66R5-C-T5

SusumuIn Stock: 755RG2012N-66R5-C-T5 Datasheet

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RG2012N-66R5-B-T5

SusumuIn Stock: 1147RG2012N-66R5-B-T5 Datasheet

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RG2012N-66R5-W-T1

SusumuIn Stock: 1138RG2012N-66R5-W-T1 Datasheet

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RG2012N-66R5-W-T5

SusumuIn Stock: 1088RG2012N-66R5-W-T5 Datasheet

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TNPW080566R5BYEA

Vishay DaleIn Stock: 729TNPW080566R5BYEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RG2012N-66R5-C-T5 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Resistance value: 66.5 Ohms (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Automotive rating: AEC-Q200 (exact match required)
• Anti-sulfur feature (exact match required)

Allowable Variation Parameters:

• Tolerance: May be equal to or tighter (lower) than ±0.25%
• Power rating: May be equal to or higher than 0.125W
• Operating temperature range: May be equal to or wider than -55°C ~ 155°C
• Temperature coefficient: ±10ppm/°C (consistent across all parts)

All substitute parts listed maintain identical resistance, package, composition, and automotive qualification. Tolerance specifications range from ±0.25% to ±0.05%, representing improvements over the original specification. Power ratings range from 0.125W to 0.26W, providing equal or enhanced capability. All parts maintain RoHS3 compliance and MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Susumu RG Series):

The RG2012N-66R5-B-T5 and RG2012N-66R5-W-T5 are active Susumu products that maintain identical electrical and mechanical specifications to the obsolete RG2012N-66R5-C-T5, with the exception of improved tolerance ratings. The RG2012N-66R5-B-T5 offers ±0.1% tolerance, while both RG2012N-66R5-W-T5 and RG2012N-66R5-W-T1 provide ±0.05% tolerance. These parts are suitable for direct substitution in applications where the original tolerance specification is acceptable or where tighter tolerance is beneficial. All three alternatives are available in Tape & Reel packaging and carry active product status.

For Enhanced Performance (Vishay Dale TNPW Series):

The TNPW080566R5BYEA from Vishay Dale represents a cross-manufacturer alternative with enhanced specifications. This part maintains the 66.5 Ohm resistance, ±0.1% tolerance, and 0805 package, but provides doubled power rating (0.26W versus 0.125W) and extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C). The TNPW080566R5BYEA includes moisture-resistant coating in addition to anti-sulfur protection. This option is appropriate for applications requiring higher thermal margin or extended temperature operation while maintaining AEC-Q200 automotive qualification.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and AEC-Q200 automotive qualification. No compliance degradation occurs with any listed substitute. The transition from obsolete to active product status ensures long-term supply availability and manufacturing continuity.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-66R5-B-T5 be used as a direct replacement for RG2012N-66R5-C-T5?

A: Yes. Both parts share identical resistance (66.5 Ohms), package (0805), power rating (0.125W), composition (thin film), and automotive qualification (AEC-Q200). The RG2012N-66R5-B-T5 provides improved tolerance (±0.1% versus ±0.25%), which is a functional enhancement. The part is active and available in Tape & Reel packaging.

Q: What is the difference between RG2012N-66R5-W-T5 and RG2012N-66R5-W-T1?

A: Both parts are identical in all electrical and mechanical parameters, including ±0.05% tolerance, 0.125W power rating, and 0805 package. The difference lies in packaging configuration (T5 versus T1 tape specifications). Selection between these parts depends on assembly equipment compatibility and tape reel specifications required by your manufacturing process.

Q: Why does TNPW080566R5BYEA have a higher power rating?

A: The TNPW080566R5BYEA is rated for 0.26W compared to 0.125W in the Susumu parts. This reflects the physical and thermal design characteristics of the Vishay Dale component. The higher power rating does not affect compatibility in applications designed for 0.125W operation; it provides additional thermal margin and capability for higher current applications.

Q: Are all substitute parts suitable for automotive applications?

A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification, anti-sulfur coating, and are compliant with automotive reliability standards. All parts maintain identical operating temperature coefficient (±10ppm/°C) and moisture sensitivity level (MSL 1).

Q: What is the impact of tolerance differences on circuit performance?

A: The RG2012N-66R5-C-T5 specifies ±0.25% tolerance. Substitute parts offer equal (RG2012N-66R5-B-T5 and TNPW080566R5BYEA at ±0.1%) or tighter (RG2012N-66R5-W-T5 and RG2012N-66R5-W-T1 at ±0.05%) tolerance. Tighter tolerance reduces resistance variation across production batches, which may improve circuit accuracy in precision applications. Applications designed for ±0.25% tolerance will function identically with tighter tolerance substitutes.

Q: Can TNPW080566R5BYEA be used in place of Susumu parts?

A: Yes, with consideration of the extended operating temperature range. The TNPW080566R5BYEA maintains 66.5 Ohm resistance, ±0.1% tolerance, 0805 package, and AEC-Q200 qualification. The extended temperature range (-55°C ~ 175°C) and higher power rating (0.26W) represent enhancements. Cross-manufacturer substitution is electrically and mechanically compatible.

Q: Is packaging format (Tape & Reel) important for substitution?

A: Packaging format affects assembly process compatibility but does not impact electrical or mechanical performance. The RG2012N-66R5-C-T5 is available in standard packaging, while all active substitutes are supplied in Tape & Reel format. Confirm that your assembly equipment supports Tape & Reel packaging before selecting these alternatives.