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RMCF2512FT866K Equivalent & Substitute Parts
Part Overview
The RMCF2512FT866K is a 866 kOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently active in production with 1003 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and automotive compliance ratings are maintained across alternative manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 866 kOhms |
| Tolerance | ±1% |
| Power Rating | 1W |
| Package / Case | 2512 (6432 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Automotive Rating | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the RMCF2512FT866K is determined by strict equivalence across the following parameters:
- Resistance value: 866 kOhms
- Tolerance: ±1%
- Power rating: 1W
- Package designation: 2512 (6432 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C ~ 155°C
- Automotive compliance: AEC-Q200
- RoHS compliance: ROHS3 Compliant
- Moisture sensitivity: MSL 1
The CRCW2512866KFKEG from Vishay Dale meets all these criteria and is classified as a direct substitute.
Parameter Comparison
| Parameter | RMCF2512FT866K (Stackpole) | CRCW2512866KFKEG (Vishay Dale) |
|---|---|---|
| Resistance | 866 kOhms | 866 kOhms |
| Tolerance | ±1% | ±1% |
| Power Rating | 1W | 1W |
| Package / Case | 2512 (6432 Metric) | 2512 (6432 Metric) |
| Composition | Thick Film | Thick Film |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C |
| Automotive Rating | AEC-Q200 | AEC-Q200 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Physical Dimensions | 0.248" L x 0.126" W (6.30mm x 3.20mm) | 0.248" L x 0.124" W (6.30mm x 3.15mm) |
| Height - Seated (Max) | 0.028" (0.70mm) | 0.028" (0.70mm) |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the RMCF2512FT866K and CRCW2512866KFKEG are active production parts with equivalent electrical and mechanical specifications. Selection between these parts may be based on:
- Availability and inventory levels
- Supply chain logistics and lead times
- Manufacturer qualification requirements within your organization
- PCB assembly process compatibility with either manufacturer's device package specifications
Both parts maintain full compliance with AEC-Q200 automotive standards, ROHS3 directives, and REACH regulations, making them functionally interchangeable for applications requiring 866 kOhms ±1% 1W thick film resistors in 2512 package format.
Frequently Asked Questions (FAQ)
Q: Can CRCW2512866KFKEG replace RMCF2512FT866K in automotive applications?
A: Yes. Both parts are AEC-Q200 qualified with identical electrical specifications (866 kOhms ±1%, 1W, ±100ppm/°C) and operate across the same temperature range (-55°C ~ 155°C). Physical dimensions are equivalent within tolerance for 2512 package placement.
Q: Are there dimensional differences between these parts?
A: Width dimensions show minor variation: RMCF2512FT866K is 0.126" (3.20mm) while CRCW2512866KFKEG is 0.124" (3.15mm). Both maintain identical length (0.248" / 6.30mm) and height (0.028" / 0.70mm). These variations are within standard 2512 package tolerances and do not affect PCB layout or assembly compatibility.
Q: Do both parts have the same moisture sensitivity rating?
A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.
Q: Are both parts RoHS and REACH compliant?
A: Yes. Both RMCF2512FT866K and CRCW2512866KFKEG are ROHS3 compliant and REACH unaffected.
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