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RG2012P-1780-P-T1 Equivalent & Substitute Parts
Part Overview
The RG2012P-1780-P-T1 is a 178 Ohms ±0.02% 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 anti-sulfur coating with AEC-Q200 automotive qualification. The part is currently classified as obsolete, necessitating identification of equivalent alternatives for ongoing design support and procurement requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 178 Ohms |
| Tolerance | ±0.02% |
| Power Rating | 0.125W (1/8W) |
| Package | 0805 (2012 Metric) |
| Composition | Thin Film |
| Features | Anti-Sulfur, Automotive AEC-Q200 |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the RG2012P-1780-P-T1 is determined by the following critical parameters:
Electrical Parameters:
- Resistance value: 178 Ohms (exact match required)
- Tolerance: ±0.02% (exact match required)
- Power rating: 0.125W minimum (equal or higher acceptable)
Mechanical Parameters:
- Package format: 0805 (2012 Metric) (exact match required)
- Number of terminations: 2 (exact match required)
- Physical dimensions: 0.079" L x 0.049" W, 0.020" max height (exact match required)
Environmental & Compliance Parameters:
- Composition: Thin Film (exact match required)
- Features: Anti-Sulfur, Automotive AEC-Q200 (exact match required)
- Operating temperature range: -55°C ~ 155°C (exact match required)
- RoHS Status: ROHS3 Compliant (exact match required)
- Moisture Sensitivity Level: 1 (exact match required)
The RG2012V-1780-P-T1 meets all substitution criteria and is classified as an equivalent part.
Parameter Comparison
| Parameter | RG2012P-1780-P-T1 (Main Part) | RG2012V-1780-P-T1 (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Susumu | Susumu | Identical |
| Resistance | 178 Ohms | 178 Ohms | Identical |
| Tolerance | ±0.02% | ±0.02% | Identical |
| Power Rating | 0.125W (1/8W) | 0.125W (1/8W) | Identical |
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | Identical |
| Composition | Thin Film | Thin Film | Identical |
| Features | Anti-Sulfur, Automotive AEC-Q200 | Anti-Sulfur, Automotive AEC-Q200 | Identical |
| Temperature Coefficient | ±25ppm/°C | ±5ppm/°C | Substitute Superior |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | Identical |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) | 0.079" L x 0.049" W (2.00mm x 1.25mm) | Identical |
| Height - Seated (Max) | 0.020" (0.50mm) | 0.020" (0.50mm) | Identical |
| Number of Terminations | 2 | 2 | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Identical |
| REACH Status | REACH Unaffected | REACH Unaffected | Identical |
| Product Status | Obsolete | Active | Substitute Active |
| Packaging | Not specified | Tape & Reel (TR) | Substitute Specified |
Engineering Selection Recommendations
The RG2012V-1780-P-T1 is the direct equivalent for the obsolete RG2012P-1780-P-T1. Both components are manufactured by Susumu and share identical electrical, mechanical, and environmental specifications. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.
The RG2012V-1780-P-T1 demonstrates superior temperature coefficient performance (±5ppm/°C versus ±25ppm/°C), providing enhanced stability across the operating temperature range of -55°C to 155°C. Both parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and anti-sulfur coating specifications.
The substitute part is supplied in Tape & Reel (TR) packaging format, which is standard for high-volume production environments. All critical parameters including resistance value, tolerance, power rating, package format, and compliance certifications are fully compatible with the original specification.
Frequently Asked Questions (FAQ)
Q: Can the RG2012V-1780-P-T1 be used as a direct replacement for the RG2012P-1780-P-T1?
A: Yes. The RG2012V-1780-P-T1 is a direct equivalent. Both parts share identical resistance (178 Ohms), tolerance (±0.02%), power rating (0.125W), package format (0805), and all environmental specifications. The substitute part is currently in active production.
Q: What is the difference between the RG2012P and RG2012V designations?
A: The primary difference is product status. The RG2012P-1780-P-T1 is obsolete, while the RG2012V-1780-P-T1 is active. The substitute also features improved temperature coefficient performance (±5ppm/°C versus ±25ppm/°C) and is supplied in standard Tape & Reel packaging.
Q: Are there any mechanical compatibility issues when substituting the RG2012V-1780-P-T1?
A: No. Both parts use identical 0805 (2012 Metric) package format with matching physical dimensions (0.079" L x 0.049" W) and maximum seated height (0.020"). PCB footprints and assembly processes require no modification.
Q: Does the RG2012V-1780-P-T1 meet automotive qualification requirements?
A: Yes. The substitute part carries AEC-Q200 automotive qualification identical to the original part, along with anti-sulfur coating and operating temperature range of -55°C to 155°C.
Q: What is the impact of the improved temperature coefficient on circuit performance?
A: The RG2012V-1780-P-T1 exhibits a temperature coefficient of ±5ppm/°C compared to ±25ppm/°C for the original part. This results in superior resistance stability across temperature variations, reducing drift-related circuit performance variations.
Q: Is the Tape & Reel packaging compatible with standard pick-and-place assembly equipment?
A: Yes. Tape & Reel (TR) packaging is the standard format for automated surface mount assembly processes and is compatible with all conventional pick-and-place equipment.
Q: Are both parts RoHS compliant?
A: Yes. Both the RG2012P-1780-P-T1 and RG2012V-1780-P-T1 are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), indicating no special storage or handling requirements.
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