RC3216F4990CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F4990CS is a 499 Ohm ±1% 0.25W (1/4W) thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. This component is classified as Active product status with moisture-resistant construction, operating across -55°C to 155°C. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package type, dimensions, termination count), and environmental performance parameters (operating temperature range, temperature coefficient). This reference enables component selection when the primary part is unavailable or when design requirements necessitate alternative sourcing options.

Key Parameters

Parameter	Specification
Resistance Value	499 Ohms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RC3216F4990CS are classified into two categories based on substitution compatibility:

Direct Substitutes maintain identical electrical and mechanical specifications with full interchangeability:

Resistance: 499 Ohms ±1%
Power Rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Temperature Coefficient: ±100ppm/°C
Operating Temperature: -55°C ~ 155°C
Terminations: 2
Composition: Thick Film

Similar Substitutes share core electrical specifications and package compatibility but include enhanced features (automotive AEC-Q200 certification, anti-sulfur treatment, high voltage capability, or pulse withstanding characteristics) or differ in compliance status. These parts are suitable for applications where the additional features provide design benefits or where compliance requirements align with project specifications.

The critical parameters determining substitution eligibility are: resistance value, tolerance, power rating, package type, operating temperature range, and termination configuration. All listed substitutes maintain these core parameters within the RC3216F4990CS specification envelope.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp (°C)	Features	RoHS Status	Product Status
RC3216F4990CS	Samsung Electro-Mechanics	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Moisture Resistant	ROHS3	Active
CR1206-FX-4990ELF	Bourns Inc.	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Moisture Resistant	ROHS3	Active
ERJ-8ENF4990V	Panasonic Electronic Components	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Automotive AEC-Q200	ROHS3	Not For New Designs
RC1206FR-07499RL	YAGEO	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Moisture Resistant	ROHS3	Active
RMCF1206FT499R	Stackpole Electronics Inc	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Automotive AEC-Q200	ROHS3	Active
AC1206FR-07499RL	YAGEO	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Automotive AEC-Q200, Moisture Resistant	ROHS3	Active
CRCW1206499RFKEA	Vishay Dale	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Automotive AEC-Q200	ROHS3	Active
CRCW1206499RFKEAHP	Vishay Dale	499Ω	±1%	0.75	1206	±100ppm/°C	-55~155	Automotive AEC-Q200, Pulse Withstanding	ROHS3	Active
CRCW1206499RFKTA	Vishay Dale	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Automotive AEC-Q200	RoHS Non-compliant	Active
KTR18EZPF4990	Rohm Semiconductor	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Automotive AEC-Q200, High Voltage	ROHS3	Active
RCA1206499RFKEA	Vishay Dale	499Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Anti-Sulfur, Automotive AEC-Q200	ROHS3	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Interchangeability)

CR1206-FX-4990ELF (Bourns Inc.) and RC1206FR-07499RL (YAGEO) are direct substitutes with Active product status and ROHS3 compliance matching the RC3216F4990CS. Both maintain identical electrical specifications and moisture-resistant thick film construction. Selection between these options depends on supplier availability and procurement lead times.

Automotive-Qualified Alternatives

RMCF1206FT499R (Stackpole Electronics Inc.), AC1206FR-07499RL (YAGEO), CRCW1206499RFKEA (Vishay Dale), and RCA1206499RFKEA (Vishay Dale) incorporate AEC-Q200 automotive qualification. These parts are suitable for applications requiring automotive-grade reliability and are ROHS3 compliant with Active product status. AC1206FR-07499RL combines automotive qualification with moisture-resistant features. RCA1206499RFKEA adds anti-sulfur treatment for enhanced environmental protection.

Enhanced Power Rating Option

CRCW1206499RFKEAHP (Vishay Dale) provides 0.75W (3/4W) power rating in the same 1206 package with pulse withstanding capability and AEC-Q200 qualification. This part is suitable for applications requiring higher power dissipation margin while maintaining the same footprint.

Specialized Applications

KTR18EZPF4990 (Rohm Semiconductor) includes high voltage capability with AEC-Q200 qualification, suitable for circuits requiring enhanced voltage performance. Limited inventory (787 Pcs) may affect availability.

Obsolescence Consideration

ERJ-8ENF4990V (Panasonic Electronic Components) carries "Not For New Designs" status despite ROHS3 compliance and AEC-Q200 qualification. This part should be avoided for new product development.

Compliance Exception

CRCW1206499RFKTA (Vishay Dale) is RoHS non-compliant and REACH affected. This part is unsuitable for applications requiring ROHS3 compliance and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC3216F4990CS with any of the listed parts without circuit redesign?

A: Direct substitutes CR1206-FX-4990ELF and RC1206FR-07499RL maintain identical electrical and mechanical specifications and require no circuit redesign. Automotive-qualified alternatives (RMCF1206FT499R, AC1206FR-07499RL, CRCW1206499RFKEA, RCA1206499RFKEA) are electrically equivalent but include additional certifications. CRCW1206499RFKEAHP differs in power rating (0.75W vs 0.25W) and should only be used if the circuit design accommodates higher power dissipation. All substitutes share the 1206 package footprint and two-termination configuration.

Q: What is the difference between moisture-resistant and automotive AEC-Q200 qualified parts?

A: Moisture-resistant construction (RC3216F4990CS, CR1206-FX-4990ELF, RC1206FR-07499RL) provides protection against humidity and moisture ingress. AEC-Q200 qualification (ERJ-8ENF4990V, RMCF1206FT499R, AC1206FR-07499RL, CRCW1206499RFKEA, KTR18EZPF4990, RCA1206499RFKEA) certifies the component for automotive applications through rigorous reliability testing including thermal cycling, vibration, and environmental stress screening. AEC-Q200 parts are suitable for both automotive and general industrial applications requiring higher reliability assurance.

Q: Why is CRCW1206499RFKTA listed as unsuitable?

A: CRCW1206499RFKTA is RoHS non-compliant and REACH affected. The RC3216F4990CS is ROHS3 compliant. Substitution with a non-compliant part violates regulatory requirements for products subject to RoHS Directive 3 and REACH regulations. This part is excluded from new design consideration.

Q: Can I use CRCW1206499RFKEAHP as a direct replacement?

A: CRCW1206499RFKEAHP is electrically equivalent (499Ω ±1%, ±100ppm/°C, -55°C to 155°C) but rated for 0.75W power dissipation versus the RC3216F4990CS 0.25W rating. The higher power rating provides additional thermal margin. Mechanical compatibility is maintained (1206 package, 2 terminations). Substitution is valid if the circuit design does not require the lower power rating as a constraint. Verify that the higher power rating does not introduce unintended thermal effects in the application.

Q: What is the inventory status for substitute parts?

A: CR1206-FX-4990ELF (Bourns) has 93,716 Pcs in stock. RC1206FR-07499RL (YAGEO) has 94,723 Pcs. RMCF1206FT499R (Stackpole) has 84,881 Pcs. CRCW1206499RFKEAHP (Vishay Dale) has 94,859 Pcs. AC1206FR-07499RL (YAGEO) has 12,161 Pcs. CRCW1206499RFKEA (Vishay Dale) has 10,661 Pcs. RCA1206499RFKEA (Vishay Dale) has 10,513 Pcs. KTR18EZPF4990 (Rohm) has 787 Pcs. ERJ-8ENF4990V (Panasonic) has 140,809 Pcs. Inventory levels support component selection based on procurement requirements and lead time considerations.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts except CRCW1206499RFKTA are ROHS3 compliant. CRCW1206499RFKTA is RoHS non-compliant and should not be used in applications requiring ROHS3 compliance. All ROHS3-compliant substitutes are suitable for regulated markets and applications subject to RoHS Directive 3 requirements.

Q: What is the significance of anti-sulfur treatment in RCA1206499RFKEA?

A: Anti-sulfur treatment (RCA1206499RFKEA) provides enhanced protection against sulfur-containing atmospheric contaminants that can degrade resistor performance and reliability. This feature is beneficial for applications in industrial environments with high sulfur exposure or for products requiring extended operational life in corrosive atmospheres. The anti-sulfur feature does not affect electrical specifications or package compatibility.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes. All listed substitute parts maintain identical electrical specifications (499Ω ±1%, ±100ppm/°C, -55°C to 155°C) and mechanical compatibility (1206 package, 2 terminations). Mixing different manufacturers or variants in the same design is acceptable from an electrical and mechanical standpoint. However, procurement and quality assurance processes should account for multiple part numbers in inventory management and traceability documentation.

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