RC6432F4992CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F4992CS is a 49.9 kOhms ±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 active in production with 760 units in stock. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific automotive certifications.

Substiute Parts

RC6432F4992CS

Samsung Electro-MechanicsIn Stock: 781RC6432F4992CS Datasheet

Current PartRFQ

AC2512FK-0749K9L

YAGEOIn Stock: 1157AC2512FK-0749K9L Datasheet

UpgradeRFQ

CRCW251249K9FKEG

Vishay DaleIn Stock: 13172CRCW251249K9FKEG Datasheet

SimilarRFQ

CRCW251249K9FKEGHP

Vishay DaleIn Stock: 16785CRCW251249K9FKEGHP Datasheet

SimilarRFQ

RMCF2512FT49K9

Stackpole Electronics IncIn Stock: 11025RMCF2512FT49K9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F4992CS is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters:

• Resistance value: 49.9 kOhms
• Tolerance: ±1%
• Power rating: 1W (or higher)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters:

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

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitute parts are grouped into two categories: Upgrade Substitutes (enhanced features such as automotive AEC-Q200 certification) and Similar Substitutes (equivalent electrical and mechanical specifications with additional certifications or enhanced power ratings).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Upgrade): AC2512FK-0749K9L (YAGEO) is the primary upgrade substitute. It maintains all electrical and mechanical specifications of the RC6432F4992CS while adding automotive AEC-Q200 certification. This part is suitable for applications requiring automotive-grade reliability without increasing power dissipation requirements.

Secondary Substitutes (Equivalent): RMCF2512FT49K9 (Stackpole Electronics Inc) and CRCW251249K9FKEG (Vishay Dale) are functionally equivalent to the RC6432F4992CS with the addition of AEC-Q200 certification. Both maintain 1W power rating and identical electrical parameters. Selection between these parts depends on packaging preference (Tape & Reel availability) and supplier inventory.

Enhanced Power Rating Substitute: CRCW251249K9FKEGHP (Vishay Dale) provides a 1.5W power rating with pulse withstanding capability while maintaining all other specifications. This part is suitable for applications with higher transient power requirements or pulse loading conditions.

Compliance Verification: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring compatibility with existing supply chain requirements and regulatory frameworks.

Frequently Asked Questions (FAQ)

Q: Can RC6432F4992CS be directly replaced with AC2512FK-0749K9L? A: Yes. AC2512FK-0749K9L is a direct substitute with identical electrical specifications (49.9 kΩ, ±1%, 1W) and mechanical package (2512). The addition of AEC-Q200 certification makes it suitable for automotive applications without compromising compatibility with non-automotive designs.

Q: What is the difference between CRCW251249K9FKEG and CRCW251249K9FKEGHP? A: Both parts are 49.9 kΩ ±1% resistors in 2512 package with AEC-Q200 certification. The primary difference is power rating: CRCW251249K9FKEG is rated 1W, while CRCW251249K9FKEGHP is rated 1.5W with pulse withstanding capability. Select CRCW251249K9FKEGHP only if the application requires higher power dissipation or pulse loading tolerance.

Q: Are all substitute parts available in the same packaging format? A: No. RC6432F4992CS is supplied in standard packaging, while AC2512FK-0749K9L, RMCF2512FT49K9, and CRCW251249K9FKEGHP are supplied in Tape & Reel (TR) format. CRCW251249K9FKEG is available in Cut Tape (CT) & Digi-Reel® format. Verify packaging compatibility with assembly equipment before selection.

Q: Do all substitute parts meet the same temperature specifications? A: Yes. All listed substitutes operate across -55°C to 155°C with ±100ppm/°C temperature coefficient, matching the RC6432F4992CS specifications.

Q: Which substitute part has the highest inventory availability? A: CRCW251249K9FKEGHP (Vishay Dale) has 16,735 units in stock, followed by CRCW251249K9FKEG (13,081 units) and AC2512FK-0749K9L (1,134 units). RMCF2512FT49K9 has 10,965 units available.

Q: Is AEC-Q200 certification required for my application? A: AEC-Q200 certification is required for automotive applications. For non-automotive industrial or consumer applications, the RC6432F4992CS without AEC-Q200 is acceptable. Verify application requirements before selecting a substitute.