RG2012N-1270-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-1270-C-T5 is a 127 Ohms ±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 construction with AEC-Q200 automotive qualification. The part is currently classified as obsolete. Equivalent and substitute parts are available from the same manufacturer series with improved tolerance specifications and active product status, providing direct functional alternatives for circuit applications requiring this resistance value and package configuration.

Substiute Parts

RG2012N-1270-C-T5

SusumuIn Stock: 1207RG2012N-1270-C-T5 Datasheet

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RG2012N-1270-B-T5

SusumuIn Stock: 1091RG2012N-1270-B-T5 Datasheet

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RG2012N-1270-W-T1

SusumuIn Stock: 1000RG2012N-1270-W-T1 Datasheet

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RG2012N-1270-W-T5

SusumuIn Stock: 891RG2012N-1270-W-T5 Datasheet

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RG2012V-1270-B-T5

SusumuIn Stock: 867RG2012V-1270-B-T5 Datasheet

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RG2012V-1270-P-T1

SusumuIn Stock: 1246RG2012V-1270-P-T1 Datasheet

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RG2012V-1270-W-T1

SusumuIn Stock: 716RG2012V-1270-W-T1 Datasheet

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RG2012V-1270-W-T5

SusumuIn Stock: 784RG2012V-1270-W-T5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RG2012N-1270-C-T5 is determined by the following critical parameters that must remain constant across all equivalent parts:

Fixed Parameters (Non-Negotiable):

• Resistance value: 127 Ohms
• Package / Case: 0805 (2012 Metric)
• Power rating: 0.125W (1/8W)
• Composition: Thin Film
• Features: Anti-Sulfur, Automotive AEC-Q200
• Operating temperature range: -55°C ~ 155°C
• Number of terminations: 2
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Variable Parameters (Substitution Basis):

• Tolerance: The main part specifies ±0.25%. Substitute parts with equal or tighter (lower) tolerance values are functionally equivalent and provide improved precision.
• Temperature coefficient: The main part specifies ±10ppm/°C. Substitute parts with equal or lower temperature coefficient values provide improved stability.
• Product status: Active substitute parts are preferred over the obsolete main part for new designs and ongoing procurement.

All substitute parts listed maintain identical mechanical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and maximum seated height (0.020" / 0.50mm), ensuring direct PCB compatibility without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Equivalent Tolerance): The RG2012N-1270-B-T5 provides the closest functional equivalent with ±0.1% tolerance and active product status. This part maintains the same temperature coefficient (±10ppm/°C) as the main part while offering improved precision and current availability.

For Improved Precision (Tighter Tolerance): The RG2012N-1270-W-T1 and RG2012N-1270-W-T5 both offer ±0.05% tolerance with active status. These parts are suitable for applications requiring higher precision than the original ±0.25% specification while maintaining identical temperature coefficient performance.

For Enhanced Stability (Lower Temperature Coefficient): The RG2012V series parts (RG2012V-1270-B-T5, RG2012V-1270-P-T1, RG2012V-1270-W-T1, RG2012V-1270-W-T5) feature ±5ppm/°C temperature coefficient, providing superior thermal stability compared to the main part's ±10ppm/°C specification. These parts are recommended for temperature-sensitive applications and all maintain active product status.

For Maximum Precision and Stability: The RG2012V-1270-P-T1 combines the tightest tolerance (±0.02%) with the lowest temperature coefficient (±5ppm/°C), offering the highest performance specification available within this product family. This part is suitable for precision measurement and reference circuits.

All substitute parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and identical mechanical compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can I use RG2012N-1270-B-T5 as a direct replacement for RG2012N-1270-C-T5?

A: Yes. The RG2012N-1270-B-T5 is a direct functional equivalent. Both parts share identical resistance (127 Ohms), power rating (0.125W), package (0805), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute part offers improved tolerance (±0.1% versus ±0.25%) and active product status, making it suitable for direct PCB substitution without circuit redesign.

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

A: The primary difference is temperature coefficient. RG2012N series parts have ±10ppm/°C temperature coefficient, while RG2012V series parts have ±5ppm/°C temperature coefficient. Both series maintain identical resistance, power rating, package, and operating temperature range. RG2012V parts provide superior thermal stability for applications sensitive to temperature-induced resistance drift.

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

A: All substitute parts are supplied in Tape & Reel (TR) packaging, which is standard for automated assembly. The original RG2012N-1270-C-T5 does not specify packaging format in the provided data. Tape & Reel packaging is compatible with standard pick-and-place equipment and provides the same component performance as alternative packaging formats.

Q: Can I substitute a ±0.05% tolerance part for a ±0.25% tolerance requirement?

A: Yes. A tighter tolerance specification (lower percentage value) is always functionally compatible with applications designed for looser tolerance. Parts with ±0.05% tolerance (RG2012N-1270-W-T1, RG2012N-1270-W-T5, RG2012V-1270-W-T1, RG2012V-1270-W-T5) will perform within the original ±0.25% tolerance window while providing additional precision margin.

Q: Which substitute part offers the best long-term stability?

A: The RG2012V-1270-P-T1 offers the best long-term stability with ±0.02% tolerance and ±5ppm/°C temperature coefficient. This combination minimizes both initial tolerance error and temperature-induced drift, making it suitable for precision reference and measurement applications where stability is critical.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. All substitute parts listed maintain AEC-Q200 automotive qualification, anti-sulfur construction, and identical operating temperature range (-55°C ~ 155°C). All parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with automotive and industrial applications.

Q: What is the physical compatibility between the main part and substitutes?

A: All parts share identical mechanical dimensions: 0.079" length × 0.049" width (2.00mm × 1.25mm) with maximum seated height of 0.020" (0.50mm). This ensures direct PCB footprint compatibility without layout modifications or rework.