RG2012P-1780-B-T5 Equivalent & Substitute Parts

Part Overview

The RG2012P-1780-B-T5 is a 178 Ohm ±0.1% thin film chip resistor manufactured by Susumu in 0805 (2012 Metric) package format. This component is rated for 0.125W (1/8W) power dissipation and features automotive AEC-Q200 qualification with anti-sulfur construction. The part operates across -55°C to 155°C and maintains a temperature coefficient of ±25ppm/°C. Product status is Active with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

RG2012P-1780-B-T5

SusumuIn Stock: 906RG2012P-1780-B-T5 Datasheet

Current PartRFQ

4-2176091-8

TE Connectivity Passive ProductIn Stock: 12934-2176091-8 Datasheet

DirectRFQ

ERA-6AEB1780V

Panasonic Electronic ComponentsIn Stock: 7540ERA-6AEB1780V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters: resistance value (178 Ohms), tolerance (±0.1%), package format (0805 / 2012 Metric), composition (thin film), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C). All identified substitutes maintain these core electrical and mechanical specifications.

Two substitute parts are qualified:

ERA-6AEB1780V (Panasonic Electronic Components): Matches all primary parameters including 0.125W power rating, AEC-Q200 automotive qualification, and identical thermal characteristics. This part is a direct functional equivalent.

4-2176091-8 (TE Connectivity Passive Product): Matches resistance, tolerance, package, composition, and thermal specifications. Power rating is elevated to 0.25W (1/4W), which is compatible with applications designed for the 0.125W RG2012P-1780-B-T5 due to higher power headroom. Physical height differs slightly (0.026" vs. 0.020" maximum seated height) but remains within 0805 package constraints.

Parameter Comparison

Engineering Selection Recommendations

ERA-6AEB1780V is the primary substitute for applications requiring direct equivalence. This Panasonic part maintains identical power rating (0.125W), AEC-Q200 automotive qualification, and all electrical specifications. Selection of this part introduces no design modifications and is suitable for automotive and high-reliability applications.

4-2176091-8 is a compatible substitute for applications where increased power margin is acceptable. The elevated 0.25W rating provides additional thermal headroom without affecting electrical performance in circuits designed for 0.125W operation. This part is suitable for general industrial and commercial applications. The absence of specified AEC-Q200 rating and undefined REACH status require evaluation against application requirements. Physical height increase (0.026" maximum) must be verified against PCB layout constraints, particularly in high-density assemblies.

Both substitutes maintain ROHS3 compliance, unlimited moisture sensitivity rating, and identical resistance tolerance and temperature coefficient specifications.

Frequently Asked Questions (FAQ)

Q: Can ERA-6AEB1780V be used as a direct replacement for RG2012P-1780-B-T5?

A: Yes. ERA-6AEB1780V matches all critical electrical parameters including 178 Ohm resistance, ±0.1% tolerance, 0.125W power rating, ±25ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance. Physical dimensions are compatible within 0805 package specifications.

Q: Is 4-2176091-8 suitable for automotive applications?

A: 4-2176091-8 is not specified with AEC-Q200 automotive qualification. Applications requiring automotive-grade components should use ERA-6AEB1780V or the original RG2012P-1780-B-T5. The TE Connectivity part is suitable for general industrial and commercial applications where automotive qualification is not required.

Q: What is the impact of the higher power rating on 4-2176091-8?

A: The 0.25W (1/4W) rating on 4-2176091-8 provides increased thermal capacity compared to the 0.125W (1/8W) specification of RG2012P-1780-B-T5. In circuits designed for 0.125W operation, this higher rating introduces additional safety margin without affecting electrical performance. The part operates identically at the same resistance and tolerance specifications.

Q: Are there physical compatibility concerns with substitute parts?

A: All three parts use 0805 (2012 Metric) package format with identical footprint dimensions (0.079" L x 0.049" W). Seated height varies: RG2012P-1780-B-T5 at 0.020" maximum, ERA-6AEB1780V at 0.024" maximum, and 4-2176091-8 at 0.026" maximum. These variations remain within 0805 package specifications. High-density PCB layouts with minimal clearance should verify height constraints before substitution.

Q: Do all parts meet RoHS and environmental compliance requirements?

A: RG2012P-1780-B-T5 and ERA-6AEB1780V are both ROHS3 compliant with REACH Unaffected status. 4-2176091-8 is ROHS3 compliant with Vendor Undefined REACH status. Applications subject to REACH compliance requirements should prioritize RG2012P-1780-B-T5 or ERA-6AEB1780V.

Q: What is the moisture sensitivity rating for these parts?

A: All three parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life and no special moisture control requirements during storage or handling.