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RP2012S-120-F Equivalent & Substitute Parts
Part Overview
The RP2012S-120-F is a 12 Ohms ±1% metal film chip resistor rated at 0.333W (1/3W) in 0805 (2012 Metric) surface mount package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure procurement availability for applications requiring this resistance value and power rating specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 12 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.333W (1/3W) |
| Package / Case | 0805 (2012 Metric) |
| Composition | Metal Film |
| Operating Temperature Range | -55°C ~ 125°C |
| Temperature Coefficient | 0 / +200ppm/°C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the RP2012S-120-F is determined by strict equivalence across the following critical parameters:
- Resistance Value: 12 Ohms (exact match required)
- Tolerance: ±1% (exact match required)
- Power Rating: 0.333W / 1/3W (exact match required)
- Package: 0805 (2012 Metric) (exact match required)
- Operating Temperature Range: -55°C ~ 125°C (exact match required)
- Temperature Coefficient: 0 / +200ppm/°C (exact match required)
- Regulatory Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)
The RL1220S-120-F qualifies as a direct substitute based on full alignment with all critical electrical and mechanical parameters. Composition variation from metal film to thin film does not preclude substitution when all other specifications remain equivalent.
Parameter Comparison
| Parameter | RP2012S-120-F (Main Part) | RL1220S-120-F (Substitute) |
|---|---|---|
| Manufacturer | Susumu | Susumu |
| Resistance | 12 Ohms | 12 Ohms |
| Tolerance | ±1% | ±1% |
| Power Rating | 0.333W (1/3W) | 0.333W (1/3W) |
| Composition | Metal Film | Thin Film |
| Package / Case | 0805 (2012 Metric) | 0805 (2012 Metric) |
| 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) |
| Height - Seated (Max) | 0.020" (0.50mm) | 0.020" (0.50mm) |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Temperature Coefficient | 0 / +200ppm/°C | 0 / +200ppm/°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The RL1220S-120-F is a direct functional equivalent to the RP2012S-120-F. Both components meet identical electrical specifications, dimensional requirements, and regulatory compliance standards. The RL1220S-120-F carries active product status, ensuring ongoing availability and supply chain continuity compared to the obsolete RP2012S-120-F.
Selection of the RL1220S-120-F is supported by:
- Full electrical parameter equivalence (resistance, tolerance, power rating, temperature range)
- Identical mechanical compatibility (0805 package, footprint, height)
- Equivalent regulatory compliance (ROHS3, REACH Unaffected)
- Active manufacturing status providing long-term procurement reliability
Frequently Asked Questions (FAQ)
Q: Can the RL1220S-120-F replace the RP2012S-120-F in existing designs?
A: Yes. The RL1220S-120-F meets all electrical and mechanical specifications of the RP2012S-120-F. Both components share identical resistance value, tolerance, power rating, package type, and operating temperature range. PCB footprint and assembly compatibility are equivalent.
Q: What is the difference between metal film and thin film composition?
A: Both compositions deliver the specified electrical performance for this application. The composition difference does not affect the critical parameters of resistance value, tolerance, power rating, or temperature coefficient provided in the specifications.
Q: Is the RL1220S-120-F available in the same packaging format?
A: The RL1220S-120-F is supplied in Tape & Reel (TR) packaging, while the RP2012S-120-F was supplied in standard packaging. Both use identical 0805 (2012 Metric) component packages suitable for automated assembly processes.
Q: Are there any compliance or certification differences?
A: No. Both parts maintain ROHS3 compliance and REACH Unaffected status. Regulatory requirements are fully satisfied by the RL1220S-120-F.
Q: Why is the RP2012S-120-F listed as obsolete?
A: Obsolete status indicates the RP2012S-120-F is no longer in active production. The RL1220S-120-F provides equivalent functionality with active product status and ongoing manufacturing support.
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