RCS3216F2490CS Equivalent & Substitute Parts

Part Overview

The RCS3216F2490CS is a 249 Ohm ±1% 0.25W (1/4W) chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. This thick film resistor features anti-sulfur and moisture-resistant properties with a temperature coefficient of ±100ppm/°C and operating range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination type, and physical dimensions). Substitute parts may vary in manufacturer-specific features, certifications, and compliance status while maintaining functional equivalence for standard applications.

Key Parameters

Parameter	Value
Resistance	249 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 to 155°C
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F2490CS is determined by the following core parameters:

Mandatory Matching Parameters:

Resistance: 249 Ohms
Tolerance: ±1%
Power Rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature: -55°C to 155°C
Number of Terminations: 2

Acceptable Variation Parameters:

Physical dimensions (length, width, height) within standard 1206 package tolerances
Manufacturer-specific features (anti-sulfur, moisture-resistant, automotive certifications)
Compliance certifications (RoHS status, REACH status, AEC-Q200 ratings)
Packaging format (bulk or tape & reel)

All identified substitute parts maintain identical electrical specifications and package compatibility. Variations in certifications and features are noted to support application-specific selection requirements.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp (°C)	RoHS Status	AEC-Q200	Product Status
RCS3216F2490CS	Samsung Electro-Mechanics	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	No	Active
AC1206FR-07249RL	YAGEO	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	Yes	Active
CR1206-FX-2490ELF	Bourns Inc.	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	No	Active
CRCW1206249RFKEA	Vishay Dale	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	Yes	Active
CRCW1206249RFKEAHP	Vishay Dale	249 Ω	±1%	0.75	1206	±100ppm/°C	-55 to 155	ROHS3	Yes	Active
CRCW1206249RFKTA	Vishay Dale	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	Non-compliant	Yes	Active
ERJ-8ENF2490V	Panasonic Electronic Components	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	Yes	Not For New Designs
RC1206FR-07249RL	YAGEO	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	No	Active
RMCF1206FT249R	Stackpole Electronics Inc	249 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155	ROHS3	Yes	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

Parts with active product status and ROHS3 compliance are suitable for new design implementations:

AC1206FR-07249RL (YAGEO): Active status, ROHS3 compliant, AEC-Q200 certified, 11,169 units in stock
CR1206-FX-2490ELF (Bourns Inc.): Active status, ROHS3 compliant, 66,724 units in stock
CRCW1206249RFKEA (Vishay Dale): Active status, ROHS3 compliant, AEC-Q200 certified, 29,157 units in stock
RC1206FR-07249RL (YAGEO): Active status, ROHS3 compliant, 27,800 units in stock
RMCF1206FT249R (Stackpole Electronics Inc): Active status, ROHS3 compliant, AEC-Q200 certified, 11,943 units in stock

Higher Power Alternative:

CRCW1206249RFKEAHP (Vishay Dale): Provides 0.75W (3/4W) power rating in the same 1206 package with AEC-Q200 certification and pulse withstanding capability. Use when higher power dissipation is required.

Restricted Use:

CRCW1206249RFKTA (Vishay Dale): RoHS non-compliant and REACH affected. Suitable only for legacy applications or non-regulated markets.
ERJ-8ENF2490V (Panasonic Electronic Components): Marked "Not For New Designs." Use only for replacement in existing production or legacy systems.

Frequently Asked Questions (FAQ)

Q: Can I substitute RCS3216F2490CS with any of the listed parts?

A: Direct substitution is possible only with parts matching all mandatory parameters: 249 Ohms resistance, ±1% tolerance, 0.25W power rating, 1206 package, thick film composition, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. All listed parts except CRCW1206249RFKEAHP meet these criteria. CRCW1206249RFKEAHP has a higher 0.75W power rating and requires circuit validation.

Q: What is the difference between parts with and without AEC-Q200 certification?

A: AEC-Q200 certification indicates automotive-grade qualification. Parts with this certification (AC1206FR-07249RL, CRCW1206249RFKEA, CRCW1206249RFKEAHP, ERJ-8ENF2490V, RMCF1206FT249R) are qualified for automotive applications. The main part RCS3216F2490CS does not carry this certification. Use AEC-Q200 parts for automotive designs; non-certified parts are suitable for industrial and consumer applications.

Q: Are there physical dimension differences between substitute parts?

A: Yes. While all parts use the 1206 (3216 Metric) package, physical dimensions vary slightly within standard tolerances. Length ranges from 0.122" to 0.126" (3.10mm to 3.20mm), and height ranges from 0.024" to 0.030" (0.60mm to 0.75mm). Verify PCB layout clearances if space is constrained.

Q: What does "Not For New Designs" mean for ERJ-8ENF2490V?

A: This status indicates the part is in mature or end-of-life phase. While currently in stock (74,566 units), the manufacturer does not recommend its use in new product designs. Use this part only for replacement in existing production or legacy systems.

Q: Should I use CRCW1206249RFKTA despite RoHS non-compliance?

A: CRCW1206249RFKTA is RoHS non-compliant and REACH affected. Use only if your application is exempt from RoHS/REACH regulations or operates in non-regulated markets. For compliant designs, select from ROHS3-compliant alternatives.

Q: Can I use CRCW1206249RFKEAHP as a direct replacement?

A: CRCW1206249RFKEAHP has a higher power rating (0.75W vs. 0.25W) in the same package. It is electrically compatible but dissipates more heat. Use it only if your circuit requires higher power handling. Verify thermal management and circuit performance before implementation.

Q: What packaging formats are available?

A: All substitute parts are supplied in Tape & Reel (TR) format, suitable for automated assembly. The main part RCS3216F2490CS is supplied in standard packaging. Confirm packaging requirements with your procurement process.

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