RMCF1206FT866K Equivalent & Substitute Parts

Part Overview

The RMCF1206FT866K is a 866 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor meets automotive AEC-Q200 qualification and operates across -55°C to 155°C. The part is currently active in production with 4127 units in stock.

Substitute parts are identified when they maintain identical electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package type, termination count, physical dimensions). Alternative sources become necessary for supply chain continuity, inventory availability, or design flexibility across qualified automotive applications.

Substiute Parts

RMCF1206FT866K

Stackpole Electronics IncIn Stock: 4226RMCF1206FT866K Datasheet

Current PartRFQ

CRCW1206866KFKEA

Vishay DaleIn Stock: 16025CRCW1206866KFKEA Datasheet

DirectRFQ

ERJ-8ENF8663V

Panasonic Electronic ComponentsIn Stock: 87933ERJ-8ENF8663V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Resistance value: 866 kOhms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Package type: 1206 (3216 Metric)
• Composition: Thick Film
• Automotive qualification: AEC-Q200
• Termination count: 2
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the RMCF1206FT866K in automotive applications requiring AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

CRCW1206866KFKEA (Vishay Dale) is the primary substitute for new designs. This part maintains full electrical and mechanical equivalence with the RMCF1206FT866K while offering active production status and higher inventory availability (15970 units). The seated height of 0.024" (0.60mm) is within acceptable tolerance for 1206 package applications.

ERJ-8ENF8663V (Panasonic Electronic Components) is functionally equivalent but carries a "Not For New Designs" product status. This part remains suitable for legacy system support, field replacements, or existing production runs where design freeze conditions apply. Inventory availability is substantial at 87843 units.

Both substitute parts are ROHS3 compliant, AEC-Q200 qualified, and maintain identical electrical performance across the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206866KFKEA replace RMCF1206FT866K in automotive applications?

A: Yes. Both parts are AEC-Q200 qualified, share identical electrical specifications (866 kOhms ±1%, 0.25W, ±100ppm/°C), and use the same 1206 package with 2 terminations. Physical dimensions and thermal characteristics are compatible.

Q: What is the significance of the "Not For New Designs" status on ERJ-8ENF8663V?

A: This designation indicates Panasonic has transitioned the part to legacy support. It remains electrically and mechanically equivalent but should not be selected for new product development. Existing designs or field service applications may continue using this part.

Q: Are there dimensional differences between these resistors?

A: All three parts conform to the 1206 (3216 Metric) package standard with identical length and width (0.126" x 0.063"). The seated height varies slightly: RMCF1206FT866K and ERJ-8ENF8663V both measure 0.028" (0.70mm) maximum, while CRCW1206866KFKEA measures 0.024" (0.60mm) maximum. These variations remain within standard PCB assembly tolerances.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. All maintain AEC-Q200 automotive qualification across the -55°C to 155°C operating range.

Q: Which substitute should be selected for supply chain continuity?

A: CRCW1206866KFKEA offers the highest inventory availability and active production status, making it the preferred choice for sustained supply requirements. ERJ-8ENF8663V provides an alternative source with substantial stock levels for secondary sourcing strategies.