RCS3216F4992CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F4992CS is a 49.9 kOhms ±1% 0.25W (1/4W) thick film chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with anti-sulfur and moisture-resistant characteristics. The part is ROHS3 compliant and suitable for general industrial and consumer applications requiring precision resistive elements.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when design flexibility across multiple qualified suppliers is needed. All substitute parts listed maintain electrical and mechanical compatibility with the original specification.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	49.9 kOhms	Core electrical specification
Tolerance	±1%	Precision requirement
Power Rating	0.25W (1/4W)	Thermal dissipation capability
Package Type	1206 (3216 Metric)	PCB footprint and mounting compatibility
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Temperature stability
Operating Temperature Range	-55°C to 155°C	Environmental operating limits
Terminations	2	Standard chip resistor configuration
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F4992CS is determined by strict adherence to the following parameters:

Primary Substitution Criteria (Must Match Exactly):

Resistance Value: 49.9 kOhms
Tolerance: ±1%
Power Rating: 0.25W (1/4W)
Package Type: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C to 155°C
Number of Terminations: 2

Secondary Compatibility Factors:

RoHS3 Compliance (all listed substitutes meet this requirement)
Moisture Sensitivity Level 1 (all listed substitutes meet this requirement)
REACH Unaffected status (preferred for supply chain stability)

All substitute parts listed below satisfy the primary substitution criteria. Variations in physical dimensions (length, width, height) within the 1206 package specification are acceptable as they do not affect electrical performance or PCB footprint compatibility. Differences in packaging format (Tape & Reel versus Cut Tape) and inventory levels do not affect electrical substitutability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	RoHS Status	Product Status	AEC-Q200
RCS3216F4992CS	Samsung Electro-Mechanics	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	No
AC1206FR-0749K9L	YAGEO	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	Yes
CR1206-FX-4992ELF	Bourns Inc.	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	No
CRCW120649K9FKEA	Vishay Dale	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	Yes
CRCW120649K9FKEAHP	Vishay Dale	49.9 kΩ	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	Yes
CRCW120649K9FKTA	Vishay Dale	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	RoHS NC	Active	Yes
ERJ-8ENF4992V	Panasonic Electronic Components	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Not For New Designs	Yes
RC1206FR-0749K9L	YAGEO	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	No
RMCF1206FT49K9	Stackpole Electronics Inc	49.9 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	ROHS3	Active	Yes

Engineering Selection Recommendations

Tier 1 - Preferred Substitutes (Active Status, ROHS3 Compliant, AEC-Q200 Qualified):

CRCW120649K9FKEA (Vishay Dale): Active product status with automotive AEC-Q200 qualification. ROHS3 compliant. Highest inventory availability (71,321 pcs). Recommended for new designs requiring automotive-grade reliability.
RMCF1206FT49K9 (Stackpole Electronics Inc): Active product status with automotive AEC-Q200 qualification. ROHS3 compliant. High inventory availability (75,621 pcs). Established supply chain stability.
AC1206FR-0749K9L (YAGEO): Active product status with automotive AEC-Q200 qualification. ROHS3 compliant. High inventory availability (18,134 pcs). Suitable for automotive and industrial applications.

Tier 2 - Secondary Substitutes (Active Status, ROHS3 Compliant, Non-Automotive):

CR1206-FX-4992ELF (Bourns Inc.): Active product status. ROHS3 compliant. High inventory availability (54,095 pcs). Suitable for general industrial applications.
RC1206FR-0749K9L (YAGEO): Active product status. ROHS3 compliant. Lower inventory availability (2,200 pcs). Suitable for general industrial applications.

Tier 3 - Limited Use (Compliance or Status Concerns):

CRCW120649K9FKTA (Vishay Dale): RoHS non-compliant and REACH Affected. Not recommended for new designs or applications requiring environmental compliance.
ERJ-8ENF4992V (Panasonic Electronic Components): Marked as "Not For New Designs" by manufacturer. Use only for legacy system maintenance or replacement applications.

Special Consideration:

CRCW120649K9FKEAHP (Vishay Dale): This part has 0.75W (3/4W) power rating, exceeding the 0.25W specification of the original part. This part is electrically compatible but provides higher thermal dissipation capability. Use only when higher power handling is required or when thermal margin improvement is necessary.

Frequently Asked Questions (FAQ)

Q1: Can I use CRCW120649K9FKEAHP as a direct replacement for RCS3216F4992CS?

A: CRCW120649K9FKEAHP is electrically compatible with RCS3216F4992CS for all specified parameters except power rating (0.75W versus 0.25W). The higher power rating does not prevent substitution; however, it is not required for applications designed for 0.25W operation. Use this part only when thermal margin improvement or higher power dissipation capability is specifically needed.

Q2: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape suitable for automated pick-and-place assembly equipment. Cut Tape (CT) & Digi-Reel packaging is supplied in shorter tape segments suitable for manual handling or lower-volume assembly. Both packaging formats contain identical electrical components; the difference is in supply format and handling method only.

Q3: Why is ERJ-8ENF4992V marked "Not For New Designs"?

A: This designation indicates that the manufacturer (Panasonic) has discontinued active development and promotion of this part number. While the part remains electrically functional and available in inventory, it is intended for legacy system support only. New designs should use parts from Tier 1 or Tier 2 categories.

Q4: Are all substitute parts ROHS3 compliant?

A: No. CRCW120649K9FKTA is RoHS non-compliant. All other listed substitutes are ROHS3 compliant. For applications requiring environmental compliance or regulatory adherence, use only ROHS3-compliant parts.

Q5: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts bearing this qualification have undergone rigorous testing for reliability, temperature cycling, and performance stability under automotive operating conditions. AEC-Q200 qualified parts are suitable for automotive, industrial, and high-reliability applications.

Q6: Can I substitute a part with different physical dimensions within the 1206 package?

A: Yes. All parts listed are 1206 (3216 Metric) package type. Minor variations in length, width, and height (as shown in the parameter comparison table) are within the 1206 package specification and do not affect PCB footprint compatibility or electrical performance.

Q7: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without special moisture control measures. All listed substitutes have MSL 1 rating, meaning they can be stored and handled under standard conditions without desiccant packaging or controlled humidity requirements.

Q8: Which substitute part has the highest inventory availability?

A: RMCF1206FT49K9 (Stackpole Electronics Inc) has the highest inventory availability at 75,621 pieces, followed closely by CRCW120649K9FKEA (Vishay Dale) at 71,321 pieces.

Q9: Is the original RCS3216F4992CS still in active production?

A: Yes. RCS3216F4992CS is marked as Active product status with 744 pieces in current inventory. However, maintaining multiple qualified suppliers through substitute parts ensures supply chain resilience.

Q10: What is the temperature coefficient specification and why does it matter?

A: The temperature coefficient of ±100ppm/°C indicates the resistance value change per degree Celsius of temperature variation. All listed substitutes match this specification, ensuring consistent performance across the -55°C to 155°C operating temperature range. This parameter is critical for precision analog circuits and measurement applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message