RG2012N-1780-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012N-1780-B-T1 is a 178 Ohms ±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 requiring precision resistance values. The part is currently obsolete, necessitating identification of functionally equivalent active alternatives from the Susumu RG series that maintain electrical and mechanical compatibility.

Substiute Parts

RG2012N-1780-B-T1

SusumuIn Stock: 935RG2012N-1780-B-T1 Datasheet

Current PartRFQ

RG2012N-1780-B-T5

SusumuIn Stock: 891RG2012N-1780-B-T5 Datasheet

DirectRFQ

RG2012N-1780-W-T1

SusumuIn Stock: 897RG2012N-1780-W-T1 Datasheet

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RG2012N-1780-W-T5

SusumuIn Stock: 1174RG2012N-1780-W-T5 Datasheet

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RG2012V-1780-B-T5

SusumuIn Stock: 1016RG2012V-1780-B-T5 Datasheet

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RG2012V-1780-P-T1

SusumuIn Stock: 977RG2012V-1780-P-T1 Datasheet

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RG2012V-1780-W-T1

SusumuIn Stock: 850RG2012V-1780-W-T1 Datasheet

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RG2012V-1780-W-T5

SusumuIn Stock: 1098RG2012V-1780-W-T5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Resistance value: 178 Ohms (exact match required)
• Power rating: 0.125W minimum
• Package: 0805 (2012 Metric)
• Composition: Thin Film
• Features: Anti-Sulfur, Automotive AEC-Q200
• Operating temperature range: -55°C to 155°C minimum
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Allowable Variation Parameters:

• Tolerance: ±0.1% or tighter (±0.05%, ±0.02%)
• Temperature coefficient: ±10ppm/°C or tighter (±5ppm/°C)
• Packaging format: Bulk or Tape & Reel (TR)
• Product status: Active preferred over obsolete

All substitute parts listed maintain identical electrical performance within the specified operating envelope while offering improved or equivalent tolerance and temperature stability characteristics.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Equivalent Specifications):

RG2012N-1780-B-T5 provides direct electrical equivalence to the obsolete RG2012N-1780-B-T1, maintaining identical tolerance (±0.1%) and temperature coefficient (±10ppm/°C). This part is active and available in Tape & Reel packaging, suitable for automated assembly processes.

Enhanced Performance Alternatives:

Parts with tighter tolerance specifications (±0.05% or ±0.02%) provide improved accuracy without compromising compatibility. RG2012N-1780-W-T1 and RG2012N-1780-W-T5 offer ±0.05% tolerance while maintaining the ±10ppm/°C temperature coefficient of the original design.

Superior Stability Options:

RG2012V series parts (RG2012V-1780-B-T5, RG2012V-1780-W-T1, RG2012V-1780-W-T5, RG2012V-1780-P-T1) feature improved temperature coefficient of ±5ppm/°C, providing enhanced thermal stability across the -55°C to 155°C operating range. These parts are active and available in Tape & Reel format.

Highest Precision Grade:

RG2012V-1780-P-T1 delivers the tightest tolerance specification (±0.02%) combined with superior temperature stability (±5ppm/°C), suitable for applications requiring maximum precision and minimal drift over temperature extremes.

All substitute parts maintain AEC-Q200 automotive qualification, anti-sulfur construction, ROHS3 compliance, and MSL 1 rating, ensuring compatibility with existing design requirements and supply chain specifications.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-1780-B-T5 be used as a direct replacement for RG2012N-1780-B-T1?

A: Yes. Both parts share identical electrical specifications: 178 Ohms ±0.1% tolerance, 0.125W power rating, ±10ppm/°C temperature coefficient, and 0805 package. The primary difference is packaging format (Tape & Reel versus Bulk) and product status (Active versus Obsolete). RG2012N-1780-B-T5 is the active equivalent.

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

A: The RG2012V series offers improved temperature coefficient performance (±5ppm/°C) compared to RG2012N series (±10ppm/°C). Both series maintain identical resistance values, tolerance options, power ratings, and package specifications. RG2012V parts provide superior thermal stability for applications sensitive to temperature-induced resistance drift.

Q: Are tolerance upgrades (±0.05% or ±0.02%) backward compatible?

A: Yes. Tighter tolerance specifications are functionally compatible with designs specified for ±0.1% tolerance. A ±0.05% part meets all requirements of a ±0.1% specification. Tighter tolerances do not introduce incompatibility; they provide improved accuracy margins.

Q: Does packaging format (Bulk versus Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical and mechanical specifications remain identical. Tape & Reel format is standard for automated pick-and-place assembly; Bulk format is used for manual assembly or alternative distribution methods.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. All parts listed maintain automotive AEC-Q200 qualification, anti-sulfur construction, ROHS3 compliance, and MSL 1 rating. These certifications are consistent across the entire substitute parts list.

Q: Which substitute part offers the best overall performance?

A: RG2012V-1780-P-T1 provides the highest performance specification with ±0.02% tolerance and ±5ppm/°C temperature coefficient. For applications requiring maximum precision and minimal thermal drift, this part is the optimal selection. For standard applications, RG2012N-1780-B-T5 provides direct equivalence at lower cost.

Q: Can these parts be used interchangeably in production?

A: Parts within the same tolerance and temperature coefficient group are interchangeable. However, design specifications should define the minimum acceptable tolerance and temperature coefficient. Substituting a part with superior specifications (tighter tolerance or lower temperature coefficient) is acceptable; substituting with inferior specifications requires design review.