RC6432F6490CS Equivalent & Substitute Parts

Part Overview

The RC6432F6490CS is a 649 Ohm ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package format. 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 is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

RC6432F6490CS

Samsung Electro-MechanicsIn Stock: 935RC6432F6490CS Datasheet

Current PartRFQ

CRCW2512649RFKEG

Vishay DaleIn Stock: 4819CRCW2512649RFKEG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F6490CS is determined by strict alignment of the following electrical and mechanical parameters:

Electrical Parameters:

• Resistance value: 649 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

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

Compliance Parameters:

• RoHS3 compliance (required)
• Moisture Sensitivity Level 1 (required)

The CRCW2512649RFKEG manufactured by Vishay Dale meets all specified electrical, mechanical, and compliance criteria and qualifies as a direct substitute for the RC6432F6490CS.

Parameter Comparison

Engineering Selection Recommendations

Both the RC6432F6490CS and CRCW2512649RFKEG are active production components with ROHS3 compliance and unlimited moisture sensitivity rating. The electrical specifications are identical across all critical parameters including resistance, tolerance, power rating, temperature coefficient, and operating temperature range.

The CRCW2512649RFKEG carries AEC-Q200 automotive qualification, which provides additional reliability assurance for applications requiring automotive-grade components. This qualification does not restrict use in non-automotive applications and represents an enhanced specification level.

Dimensional variations between the two parts are minor and within functional equivalence for the 2512 package format. The width difference of 0.002" (0.05mm) and height difference of 0.002" (0.04mm) do not impact PCB layout compatibility or circuit performance for standard 2512 footprints.

Selection between these parts should be based on supply chain availability, packaging requirements (the Samsung part is supplied in standard packaging while the Vishay part is supplied in Tape & Reel format), and any specific design requirements for automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can the CRCW2512649RFKEG directly replace the RC6432F6490CS in existing designs?

A: Yes. The CRCW2512649RFKEG meets all electrical and mechanical specifications required for direct substitution. Both components share identical resistance values, tolerance, power rating, temperature coefficient, operating temperature range, package format, and compliance certifications.

Q: What is the significance of the AEC-Q200 rating on the Vishay part?

A: AEC-Q200 is an automotive industry qualification standard that certifies component reliability under automotive operating conditions. This rating indicates enhanced quality assurance and testing protocols. The presence of this rating does not restrict the component to automotive applications; it qualifies the part for use in automotive environments and is equally suitable for general-purpose applications.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist. The Vishay CRCW2512649RFKEG has a width of 3.15mm compared to the Samsung RC6432F6490CS at 3.20mm, and a maximum seated height of 0.70mm compared to 0.66mm. These differences are within the tolerance range for 2512 package footprints and do not affect PCB layout compatibility or circuit functionality.

Q: What packaging formats are available for each part?

A: The RC6432F6490CS is supplied in standard packaging with 892 pieces in stock. The CRCW2512649RFKEG is supplied in Tape & Reel (TR) format with 4760 pieces in stock. Packaging selection depends on assembly process requirements and volume needs.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the RC6432F6490CS and CRCW2512649RFKEG carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions and no special handling requirements during storage or assembly.

Q: Are both parts RoHS compliant?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.