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RG2012P-124-W-T1 Equivalent & Substitute Parts
Part Overview
The RG2012P-124-W-T1 is a 120 kOhms ±0.05% 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-precision applications requiring tight tolerance and temperature stability. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 120 kOhms |
| Tolerance | ±0.05% |
| Power Rating | 0.125W (1/8W) |
| Package | 0805 (2012 Metric) |
| Composition | Thin Film |
| Temperature Coefficient | ±25ppm/°C (main part) / ±10ppm/°C (upgrade parts) |
| Operating Temperature Range | -55°C ~ 155°C |
| Features | Anti-Sulfur, Automotive AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the RG2012P-124-W-T1 is determined by the following critical parameters:
Electrical Parameters (Must Match):
- Resistance value: 120 kOhms
- Tolerance: ±0.05%
- Power rating: 0.125W (1/8W)
- Operating temperature range: -55°C ~ 155°C
Mechanical Parameters (Must Match):
- Package type: 0805 (2012 Metric)
- Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
- Height seated (max): 0.020" (0.50mm)
- Number of terminations: 2
Compliance & Quality Parameters (Must Match):
- Composition: Thin Film
- Features: Anti-Sulfur, Automotive AEC-Q200
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: MSL 1
Variable Parameters (Allowed to Differ):
- Product status (obsolete vs. active)
- Packaging format (bulk vs. Tape & Reel)
- Temperature coefficient (±25ppm/°C vs. ±10ppm/°C)
- Inventory availability
All identified substitutes maintain identical electrical and mechanical specifications while offering improved temperature coefficient performance or active product status.
Parameter Comparison
| Parameter | RG2012P-124-W-T1 (Main) | RG2012P-124-W-T5 | RG2012N-124-W-T1 | RG2012N-124-W-T5 |
|---|---|---|---|---|
| Resistance | 120 kOhms | 120 kOhms | 120 kOhms | 120 kOhms |
| Tolerance | ±0.05% | ±0.05% | ±0.05% | ±0.05% |
| Power Rating | 0.125W | 0.125W | 0.125W | 0.125W |
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 Metric) |
| Composition | Thin Film | Thin Film | Thin Film | Thin Film |
| Temperature Coefficient | ±25ppm/°C | ±25ppm/°C | ±10ppm/°C | ±10ppm/°C |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | -55°C ~ 155°C | -55°C ~ 155°C |
| Features | Anti-Sulfur, AEC-Q200 | Anti-Sulfur, AEC-Q200 | Anti-Sulfur, AEC-Q200 | Anti-Sulfur, AEC-Q200 |
| Product Status | Obsolete | Active | Active | Active |
| Packaging Format | Bulk | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | MSL 1 | MSL 1 | MSL 1 | MSL 1 |
Engineering Selection Recommendations
Direct Substitution (Equivalent Performance):
RG2012P-124-W-T5 provides direct electrical and mechanical equivalence to the RG2012P-124-W-T1. Both parts share identical resistance, tolerance, power rating, temperature coefficient, and package specifications. The primary distinction is product status (active vs. obsolete) and packaging format (Tape & Reel vs. bulk). This part is suitable for applications where the ±25ppm/°C temperature coefficient meets design requirements and Tape & Reel packaging is acceptable.
Upgraded Substitution (Enhanced Performance):
RG2012N-124-W-T1 and RG2012N-124-W-T5 offer superior temperature stability with ±10ppm/°C temperature coefficient compared to the main part's ±25ppm/°C specification. Both parts maintain all other electrical and mechanical parameters identically. These upgrades are classified as active products with Tape & Reel packaging. Selection between T1 and T5 variants depends on packaging format requirements for manufacturing processes.
Compliance Verification:
All substitute parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. No compliance gaps exist between the main part and any identified substitutes.
Frequently Asked Questions (FAQ)
Q: Can RG2012P-124-W-T5 be used as a direct replacement for RG2012P-124-W-T1?
A: Yes. Both parts are electrically and mechanically identical with 120 kOhms resistance, ±0.05% tolerance, 0.125W power rating, 0805 package, and ±25ppm/°C temperature coefficient. The primary difference is packaging format (Tape & Reel vs. bulk) and product status (active vs. obsolete).
Q: What is the advantage of RG2012N-124-W-T1 or RG2012N-124-W-T5 over the original part?
A: The RG2012N series provides improved temperature stability with ±10ppm/°C temperature coefficient versus ±25ppm/°C in the original RG2012P series. All other electrical and mechanical specifications remain identical. Both N-series parts are active products with established supply chains.
Q: Are there any package compatibility issues between the main part and substitutes?
A: All parts use the 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and maximum seated height (0.020" / 0.50mm). PCB footprints and assembly processes are fully compatible across all variants.
Q: Does the Tape & Reel packaging of substitute parts affect circuit performance?
A: No. Tape & Reel packaging is a manufacturing and supply format only. It does not affect electrical performance, reliability, or functional characteristics of the resistor component itself.
Q: Are all substitute parts AEC-Q200 qualified?
A: Yes. All identified substitutes maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating identical to the main part.
Q: Which substitute should be selected for new designs?
A: For new designs, RG2012N-124-W-T1 or RG2012N-124-W-T5 are preferred due to active product status and superior ±10ppm/°C temperature coefficient. Selection between T1 and T5 depends on manufacturing packaging requirements (bulk vs. Tape & Reel).
Q: Can the RG2012P-124-W-T5 be used in applications requiring the ±10ppm/°C temperature coefficient?
A: No. RG2012P-124-W-T5 maintains the ±25ppm/°C temperature coefficient of the original part. Applications requiring ±10ppm/°C performance must use RG2012N-124-W-T1 or RG2012N-124-W-T5.
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