RC6432F1271CS Equivalent & Substitute Parts

Part Overview

The RC6432F1271CS is a 1.27 kOhms ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This thick film, moisture-resistant component operates across the temperature range of -55°C to 155°C and maintains ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1). The part is currently in active production status with 979 units available in inventory.

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without performance degradation.

Substiute Parts

RC6432F1271CS

Samsung Electro-MechanicsIn Stock: 1055RC6432F1271CS Datasheet

Current PartRFQ

CRCW25121K27FKEG

Vishay DaleIn Stock: 1714CRCW25121K27FKEG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F1271CS is determined by strict alignment of the following critical parameters:

Electrical Specifications: Resistance value (1.27 kOhms), tolerance (±1%), and power rating (1W) must be identical. Temperature coefficient (±100ppm/°C) and operating temperature range (-55°C ~ 155°C) establish thermal performance boundaries.

Mechanical Compatibility: Package designation (2512 / 6432 Metric), physical dimensions (0.248" L x 0.126" W), and termination count (2) ensure physical fit and solderability in existing PCB layouts.

Compliance & Environmental: ROHS3 compliance and MSL 1 rating are mandatory for equivalent substitution. REACH status and ECCN classification must remain consistent.

Composition & Features: Thick film construction is required. Moisture resistance capability is a specified feature of the original part.

The CRCW25121K27FKEG from Vishay Dale meets all substitution criteria while adding automotive AEC-Q200 qualification, which does not restrict its use in non-automotive applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RC6432F1271CS and CRCW25121K27FKEG are active production components with full ROHS3 compliance and unlimited moisture sensitivity ratings. Selection between these parts is based on availability, packaging format, and application-specific requirements.

The RC6432F1271CS is supplied in standard packaging with 979 units currently in stock. The CRCW25121K27FKEG is supplied in Tape & Reel format with 1,622 units in inventory and carries automotive AEC-Q200 qualification. The AEC-Q200 rating on the Vishay part indicates enhanced reliability screening and is applicable to both automotive and general industrial applications.

Dimensional variations are minimal and within acceptable tolerances for PCB assembly: width differs by 0.002" (0.05mm) and height by 0.002" (0.04mm). These differences do not impact circuit performance or PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CRCW25121K27FKEG replace the RC6432F1271CS in existing designs?

A: Yes. Both parts share identical electrical specifications (1.27 kOhms, ±1%, 1W), temperature characteristics (±100ppm/°C, -55°C to 155°C), and package designation (2512 / 6432 Metric). Dimensional differences are negligible and do not affect PCB assembly or circuit operation.

Q: What does the AEC-Q200 rating on the Vishay part mean?

A: AEC-Q200 is an automotive qualification standard that certifies enhanced reliability through accelerated life testing and failure rate screening. This certification does not restrict use in non-automotive applications and indicates higher quality assurance standards.

Q: Are there packaging differences between these parts?

A: The RC6432F1271CS is supplied in standard packaging. The CRCW25121K27FKEG is supplied in Tape & Reel (TR) format, which is standard for high-volume automated assembly. Both formats contain identical components.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL 1 (unlimited) moisture sensitivity ratings. Compliance certifications are identical.

Q: What is the tolerance specification and how does it affect circuit design?

A: Both parts maintain ±1% tolerance on the 1.27 kOhms resistance value, resulting in a tolerance band of 1.2573 kOhms to 1.2827 kOhms. This tolerance level is suitable for precision analog circuits and general-purpose applications.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: Yes. Both parts use the 2512 (6432 Metric) package with compatible footprints. Width variation is 0.002" (0.05mm) and height variation is 0.002" (0.04mm), which are within standard PCB design tolerances and do not require layout modifications.