RC6432F8663CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F8663CS is an 866 kOhms ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This thick film resistor is designed for general-purpose applications requiring moisture resistance and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with 1127 units currently in stock. Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

RC6432F8663CS

Samsung Electro-MechanicsIn Stock: 1168RC6432F8663CS Datasheet

Current PartRFQ

CRCW2512866KFKEG

Vishay DaleIn Stock: 2951CRCW2512866KFKEG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F8663CS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 866 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 1W (exact match)
• Temperature coefficient: ±100ppm/°C (exact match)
• Operating temperature range: -55°C ~ 155°C (exact match or wider)

Mechanical Compatibility Requirements:

• Package / Case: 2512 (6432 Metric) (exact match)
• Number of terminations: 2 (exact match)
• Composition: Thick Film (exact match)

Compliance Requirements:

• RoHS3 Compliant (minimum requirement)
• Moisture Sensitivity Level: 1 (Unlimited) or equivalent

The CRCW2512866KFKEG manufactured by Vishay Dale satisfies all substitution criteria. Both parts share identical electrical specifications, mechanical dimensions within tolerance, and equivalent environmental ratings. The Vishay part includes additional AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC6432F8663CS): The Samsung Electro-Mechanics RC6432F8663CS is the specified part with Active product status and established supply availability (1127 units in stock). Selection of this part is appropriate when Samsung supply chain continuity and moisture-resistant thick film composition are required.

Substitute Selection (CRCW2512866KFKEG): The Vishay Dale CRCW2512866KFKEG is a direct electrical and mechanical equivalent with Active product status and higher inventory availability (2930 units in stock). This part is suitable for substitution when:

• Supply of the primary Samsung part is unavailable
• Automotive-grade qualification (AEC-Q200) is beneficial for application reliability
• Tape & Reel packaging format is compatible with assembly processes

Both parts maintain identical electrical performance, thermal characteristics, and compliance certifications. Dimensional variations (width 0.126" vs 0.124", height 0.026" vs 0.028") are within standard PCB layout tolerances for 2512 package footprints and do not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can CRCW2512866KFKEG replace RC6432F8663CS in existing designs?

A: Yes. Both parts are electrically identical with 866 kOhms ±1% 1W specifications and operate across -55°C to 155°C. Mechanical compatibility is confirmed through identical 2512 package footprints and termination count. PCB layout modifications are not required.

Q: What is the difference between the Samsung and Vishay parts?

A: The primary differences are manufacturer identity and packaging format. The Vishay part includes AEC-Q200 automotive qualification, which provides additional reliability screening but does not restrict use in non-automotive applications. Samsung packaging is standard; Vishay packaging is Tape & Reel format.

Q: Are the dimensional differences between these parts significant?

A: No. Width variation (0.126" vs 0.124") and height variation (0.026" vs 0.028") are within standard manufacturing tolerances for 2512 package resistors. Both parts fit standard 2512 PCB footprints without modification.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both RC6432F8663CS and CRCW2512866KFKEG are ROHS3 Compliant, REACH Unaffected, classified as EAR99, and share the same HTSUS code (8533.21.0030). Moisture Sensitivity Level is 1 (Unlimited) for both parts.

Q: Which part should be selected for new designs?

A: Selection depends on supply chain strategy and application requirements. For general-purpose applications, either part is acceptable. The Vishay part offers higher current inventory and automotive-grade qualification. The Samsung part maintains the original design specification.

Q: Is the temperature coefficient identical between both parts?

A: Yes. Both parts specify ±100ppm/°C temperature coefficient across the full operating range of -55°C to 155°C.