RC6432F18R7CS Equivalent & Substitute Parts

Part Overview

The RC6432F18R7CS is an 18.7 Ohms ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This thick film, moisture-resistant component operates across -55°C to 155°C and maintains ROHS3 compliance with MSL 1 rating. The part is currently in active production status with 705 units available in inventory. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component's functional requirements.

Substiute Parts

RC6432F18R7CS

Samsung Electro-MechanicsIn Stock: 814RC6432F18R7CS Datasheet

Current PartRFQ

CRCW251218R7FKEG

Vishay DaleIn Stock: 3348CRCW251218R7FKEG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F18R7CS is determined by strict alignment of the following parameters:

Electrical Parameters (Critical):

• Resistance value: 18.7 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Critical):

• Package type: 2512 (6432 Metric)
• Number of terminations: 2
• Physical dimensions compatible with 0.248" L x 0.126" W footprint

Compliance Parameters (Required):

• RoHS3 compliance
• MSL 1 rating
• REACH unaffected status

The CRCW251218R7FKEG from Vishay Dale meets all critical electrical, mechanical, and compliance requirements. Both components share identical resistance, tolerance, power rating, temperature coefficient, and operating temperature specifications. Both are packaged in 2512 (6432 Metric) format with ROHS3 compliance and MSL 1 rating. The substitute part includes automotive AEC-Q200 qualification, which represents an additional certification tier beyond the base requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC6432F18R7CS): Select the Samsung Electro-Mechanics RC6432F18R7CS when the original specification is required and inventory availability is confirmed. This component carries moisture-resistant features and maintains active production status with 705 units in stock.

Substitute Selection (CRCW251218R7FKEG): The Vishay Dale CRCW251218R7FKEG serves as a direct functional equivalent with identical electrical and thermal specifications. This substitute is appropriate when:

• Automotive AEC-Q200 qualification is required or beneficial
• Higher inventory availability is needed (3307 units in stock)
• Tape & Reel packaging format is preferred for automated assembly
• Vishay Dale supply chain is more accessible

Both components satisfy ROHS3 compliance, MSL 1 environmental rating, and REACH requirements. Dimensional compatibility is confirmed across all critical measurements. Selection between these parts should be based on supply chain availability, packaging format preference, and whether automotive-grade certification is applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can CRCW251218R7FKEG replace RC6432F18R7CS in existing designs?

A: Yes. Both components share identical electrical specifications (18.7 Ohms ±1%, 1W, ±100ppm/°C, -55°C to 155°C), identical package format (2512/6432 Metric), and equivalent compliance certifications (ROHS3, MSL 1, REACH unaffected). Dimensional variations (width 3.20mm vs 3.15mm, height 0.66mm vs 0.70mm) are within standard PCB layout tolerances for 2512 packages.

Q: What is the difference between moisture-resistant and AEC-Q200 features?

A: Moisture-resistant is a material property of the RC6432F18R7CS that provides protection against humidity exposure. AEC-Q200 is an automotive qualification standard applied to the CRCW251218R7FKEG that certifies reliability under automotive environmental and operational conditions. These are complementary features, not competing specifications.

Q: Are there packaging differences between these parts?

A: The RC6432F18R7CS is supplied in standard packaging format. The CRCW251218R7FKEG is supplied in Tape & Reel (TR) format, which is optimized for automated pick-and-place assembly. Both use identical 2512 (6432 Metric) component packages.

Q: Do both parts meet the same compliance standards?

A: Yes. Both RC6432F18R7CS and CRCW251218R7FKEG are ROHS3 compliant, carry MSL 1 (unlimited moisture sensitivity level), and are REACH unaffected. The CRCW251218R7FKEG includes additional automotive AEC-Q200 certification.

Q: What is the temperature coefficient specification and why does it matter?

A: Both parts specify ±100ppm/°C temperature coefficient, meaning resistance changes by a maximum of 100 parts per million for each degree Celsius change in operating temperature. This specification ensures predictable resistor behavior across the -55°C to 155°C operating range and is critical for precision analog circuits.

Q: Can these parts be used interchangeably in high-reliability applications?

A: Both components are suitable for high-reliability applications. The RC6432F18R7CS offers moisture-resistant properties. The CRCW251218R7FKEG offers automotive AEC-Q200 qualification. Selection depends on whether the application requires automotive-grade certification or enhanced moisture resistance as the primary reliability criterion.