RC6432F4990CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F4990CS is a 499 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 active in production with 749 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Key Parameters

Parameter	Value	Specification Basis
Resistance	499 Ohms	Core electrical specification
Tolerance	±1%	Precision requirement
Power Rating	1W (base), 1.5W (enhanced)	Thermal dissipation capability
Package / Case	2512 (6432 Metric)	Physical footprint and mounting
Composition	Thick Film	Technology type
Temperature Coefficient	±100ppm/°C	Stability specification
Operating Temperature Range	-55°C ~ 155°C	Environmental limits
Moisture Resistance	Yes	Environmental protection
RoHS Status	ROHS3 Compliant	Regulatory compliance
MSL Rating	1 (Unlimited)	Moisture sensitivity level

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters:

Mandatory Matching Parameters:

Resistance value: 499 Ohms
Tolerance: ±1%
Package / Case: 2512 (6432 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C
Moisture Resistance: Required
MSL Rating: 1 (Unlimited)

Allowable Variations:

Power Rating: 1W (direct equivalent) or 1.5W (enhanced capability, backward compatible)
Manufacturer: Different manufacturers permitted if all electrical and mechanical parameters align
Packaging Format: Tape & Reel acceptable as alternative to standard packaging
Automotive Qualification: AEC-Q200 certification is an enhancement, not a requirement for substitution

Substitution Categories:

Direct Equivalents (identical electrical and mechanical specifications):

RC2512FK-07499RL (YAGEO)
RMCF2512FT499R (Stackpole Electronics Inc)

Upgrade Options (enhanced features, same core specifications):

AC2512FK-07499RL (YAGEO) – adds AEC-Q200 automotive qualification
CRCW2512499RFKEG (Vishay Dale) – adds AEC-Q200 automotive qualification
CRCW2512499RFKTG (Vishay Dale) – adds AEC-Q200 automotive qualification

Enhanced Capability (higher power rating, same package and electrical specs):

CRCW2512499RFKEGHP (Vishay Dale) – 1.5W rating with AEC-Q200 and pulse withstanding capability

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Moisture Resistant	RoHS Status	MSL	AEC-Q200
RC6432F4990CS	Samsung Electro-Mechanics	499 Ω	±1%	1	2512	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	No
RC2512FK-07499RL	YAGEO	499 Ω	±1%	1	2512	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	No
AC2512FK-07499RL	YAGEO	499 Ω	±1%	1	2512	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Yes
CRCW2512499RFKEG	Vishay Dale	499 Ω	±1%	1	2512	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Yes
CRCW2512499RFKTG	Vishay Dale	499 Ω	±1%	1	2512	±100ppm/°C	-55 to 155°C	No	Non-compliant	1	Yes
CRCW2512499RFKEGHP	Vishay Dale	499 Ω	±1%	1.5	2512	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Yes
RMCF2512FT499R	Stackpole Electronics Inc	499 Ω	±1%	1	2512	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Yes

Engineering Selection Recommendations

For Direct Replacement (Non-Automotive Applications): RC2512FK-07499RL (YAGEO) is the primary direct equivalent. It maintains identical electrical specifications, ROHS3 compliance, and MSL 1 rating. Inventory availability is 20,849 pieces.

For Automotive Applications (AEC-Q200 Required): AC2512FK-07499RL (YAGEO) is recommended as the upgrade path. It adds AEC-Q200 qualification while preserving all core electrical and mechanical parameters. ROHS3 compliant with 7,303 pieces in stock.

For Automotive Applications with Alternative Sourcing: CRCW2512499RFKEG (Vishay Dale) provides AEC-Q200 qualification with the highest inventory availability (54,164 pieces). ROHS3 compliant. Note: Moisture resistance feature is not explicitly listed; verify against application requirements.

For Enhanced Power Dissipation in Automotive Context: CRCW2512499RFKEGHP (Vishay Dale) offers 1.5W rating with AEC-Q200 qualification and pulse withstanding capability. Use when thermal margin is required. ROHS3 compliant with 9,402 pieces available.

Parts Not Recommended for New Designs: CRCW2512499RFKTG (Vishay Dale) is RoHS non-compliant and REACH affected. Suitable only for legacy system maintenance where regulatory exemptions apply.

RMCF2512FT499R (Stackpole Electronics Inc) is AEC-Q200 qualified and ROHS3 compliant with 37,697 pieces in stock. Moisture resistance feature is not explicitly listed; verify against application requirements.

Frequently Asked Questions (FAQ)

Q: Can RC2512FK-07499RL replace RC6432F4990CS in all applications?

A: RC2512FK-07499RL is a direct electrical and mechanical equivalent with identical resistance, tolerance, power rating, package, temperature coefficient, and operating range. Both are ROHS3 compliant with MSL 1 rating. Substitution is valid for non-automotive applications. For automotive applications requiring AEC-Q200 certification, use AC2512FK-07499RL instead.

Q: What is the difference between 1W and 1.5W rated parts?

A: Power rating indicates maximum continuous thermal dissipation capability. A 1.5W part (CRCW2512499RFKEGHP) can safely dissipate higher power levels than a 1W part. The 1.5W variant is backward compatible with 1W applications but provides additional thermal margin. Use 1.5W parts when circuit design requires higher power dissipation or when operating near thermal limits.

Q: Are all substitute parts moisture resistant?

A: The RC6432F4990CS and RC2512FK-07499RL explicitly specify moisture resistance. AC2512FK-07499RL also specifies moisture resistance. CRCW2512499RFKEG, CRCW2512499RFKTG, CRCW2512499RFKEGHP, and RMCF2512FT499R do not explicitly list moisture resistance in their specifications. For applications requiring moisture protection, confirm with manufacturer datasheets or select parts with explicit moisture resistance designation.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive qualification standard for passive components. Parts bearing this certification meet automotive industry reliability and performance requirements. AEC-Q200 is an enhancement feature; it is not required for non-automotive applications but is mandatory for automotive designs.

Q: Can I use CRCW2512499RFKTG in new designs?

A: CRCW2512499RFKTG is RoHS non-compliant and REACH affected. It is not suitable for new product designs subject to RoHS3 or REACH regulations. Use only for legacy system maintenance where regulatory exemptions have been granted.

Q: What is MSL 1 rating?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture control requirements. The component does not require special storage conditions or baking before soldering. All listed parts carry MSL 1 rating, ensuring consistent handling requirements.

Q: Are there inventory differences between substitute parts?

A: Yes. CRCW2512499RFKEG has the highest inventory (54,164 pieces), followed by RMCF2512FT499R (37,697 pieces) and RC2512FK-07499RL (20,849 pieces). The original RC6432F4990CS has 749 pieces in stock. Select based on availability requirements and lead time constraints.

Q: Can I substitute parts with different manufacturers?

A: Yes, provided all electrical and mechanical parameters align. The substitute parts list includes components from YAGEO, Vishay Dale, and Stackpole Electronics Inc. All maintain the same 499 Ohm resistance, ±1% tolerance, 2512 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Manufacturer substitution is valid when specifications match.

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