RCS3216F24R9CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F24R9CS is a 24.9 Ohm ±1% 0.25W (1/4W) thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This component features anti-sulfur and moisture-resistant construction 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 MSL Level 1 rating.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination count, height constraints). The substitute parts listed maintain identical or functionally equivalent performance characteristics within the allowed parameter ranges for this resistor category.

Key Parameters

Parameter	Value	Unit
Resistance	24.9	Ohms
Tolerance	±1%	-
Power Rating	0.25W (1/4W)	Watts
Package / Case	1206 (3216 Metric)	-
Composition	Thick Film	-
Temperature Coefficient	±100ppm/°C	ppm/°C
Operating Temperature Range	-55°C to 155°C	°C
Number of Terminations	2	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the RCS3216F24R9CS are classified based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

Resistance value: 24.9 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Power rating: 0.25W (1/4W) minimum (equal or higher acceptable)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C minimum
Termination count: 2 (exact match required)
RoHS compliance: ROHS3 Compliant
MSL rating: Level 1 (Unlimited)

Substitute Categories:

Category A - Direct Equivalents (0.25W, 1/4W): Parts with identical power rating and all matching electrical specifications. These include CR1206-FX-24R9ELF (Bourns), ERJ-8ENF24R9V (Panasonic), RC1206FR-0724R9L (YAGEO), and RMCF1206FT24R9 (Stackpole). All maintain the same thermal and electrical performance envelope.

Category B - Enhanced Performance (0.75W, 3/4W): CRCW120624R9FKEAHP (Vishay Dale) provides higher power dissipation capability (0.75W vs 0.25W) while maintaining all other electrical parameters. This part is suitable for applications requiring additional thermal margin.

Category C - Automotive-Qualified Variants: CRCW120624R9FKEA (Vishay Dale), ERJ-8ENF24R9V (Panasonic), and RMCF1206FT24R9 (Stackpole) include AEC-Q200 automotive qualification. These are functionally equivalent to the base RCS3216F24R9CS for general applications and provide additional reliability certification for automotive environments.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance (Ohms)	Tolerance	Power Rating	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	Height Max (mm)	Product Status	RoHS	MSL
RCS3216F24R9CS	Samsung Electro-Mechanics	24.9	±1%	0.25W	1206	±100	-55 to 155	0.66	Active	ROHS3	1
CR1206-FX-24R9ELF	Bourns Inc.	24.9	±1%	0.25W	1206	±100	-55 to 155	0.75	Active	ROHS3	1
CRCW120624R9FKEA	Vishay Dale	24.9	±1%	0.25W	1206	±100	-55 to 155	0.60	Active	ROHS3	1
CRCW120624R9FKEAHP	Vishay Dale	24.9	±1%	0.75W	1206	±100	-55 to 155	0.65	Active	ROHS3	1
ERJ-8ENF24R9V	Panasonic Electronic Components	24.9	±1%	0.25W	1206	±100	-55 to 155	0.70	Not For New Designs	ROHS3	1
RC1206FR-0724R9L	YAGEO	24.9	±1%	0.25W	1206	±100	-55 to 155	0.65	Active	ROHS3	1
RMCF1206FT24R9	Stackpole Electronics Inc	24.9	±1%	0.25W	1206	±100	-55 to 155	0.70	Active	ROHS3	1

Engineering Selection Recommendations

For Direct Replacement (Active Production Status):

CR1206-FX-24R9ELF (Bourns), CRCW120624R9FKEA (Vishay Dale), RC1206FR-0724R9L (YAGEO), and RMCF1206FT24R9 (Stackpole) are all suitable direct substitutes with active product status. These parts maintain identical electrical specifications and 1206 package compatibility. Selection among these options may be based on availability, packaging format (Tape & Reel vs Cut Tape), and supply chain considerations.

For Automotive Applications:

CRCW120624R9FKEA (Vishay Dale), RMCF1206FT24R9 (Stackpole), and ERJ-8ENF24R9V (Panasonic) include AEC-Q200 automotive qualification. These parts are suitable for automotive-grade applications requiring additional reliability certification.

For Enhanced Thermal Performance:

CRCW120624R9FKEAHP (Vishay Dale) provides 0.75W power rating compared to the standard 0.25W. This part is suitable for applications requiring additional power dissipation margin while maintaining all other electrical and mechanical specifications.

Parts to Avoid for New Designs:

ERJ-8ENF24R9V (Panasonic) carries "Not For New Designs" status. While functionally equivalent and currently in stock, this part should not be selected for new product development. Use active-status alternatives instead.

Frequently Asked Questions (FAQ)

Q: Can I substitute CR1206-FX-24R9ELF for RCS3216F24R9CS in my circuit?

A: Yes. CR1206-FX-24R9ELF is a direct electrical equivalent with matching 24.9 Ohm resistance, ±1% tolerance, 0.25W power rating, and 1206 package. Both parts meet ROHS3 compliance and MSL Level 1 requirements. The maximum height difference (0.75mm vs 0.66mm) must be verified against PCB layout constraints.

Q: What is the difference between CRCW120624R9FKEA and CRCW120624R9FKEAHP?

A: Both parts are manufactured by Vishay Dale with identical resistance (24.9 Ohms), tolerance (±1%), and package (1206). The primary difference is power rating: CRCW120624R9FKEA is rated 0.25W (1/4W), while CRCW120624R9FKEAHP is rated 0.75W (3/4W). The higher-power variant includes pulse-withstanding capability. Select CRCW120624R9FKEAHP only if your application requires the additional power dissipation capacity.

Q: Is ERJ-8ENF24R9V still available for new designs?

A: ERJ-8ENF24R9V carries "Not For New Designs" product status from Panasonic. Although inventory is available (73,626 pcs), this part should not be selected for new product development. Use active-status alternatives such as RMCF1206FT24R9 (Stackpole), CRCW120624R9FKEA (Vishay Dale), or RC1206FR-0724R9L (YAGEO) instead.

Q: Do all substitute parts have the same package height?

A: No. Package heights vary slightly among manufacturers: RCS3216F24R9CS (0.66mm), CR1206-FX-24R9ELF (0.75mm), CRCW120624R9FKEA (0.60mm), CRCW120624R9FKEAHP (0.65mm), ERJ-8ENF24R9V (0.70mm), RC1206FR-0724R9L (0.65mm), and RMCF1206FT24R9 (0.70mm). Verify height compatibility with your PCB assembly process and design constraints before substitution.

Q: Which substitute part has the lowest profile?

A: CRCW120624R9FKEA (Vishay Dale) has the lowest maximum seated height at 0.60mm, compared to 0.66mm for the RCS3216F24R9CS. This part is suitable for space-constrained applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (CR1206-FX-24R9ELF, CRCW120624R9FKEA, CRCW120624R9FKEAHP, ERJ-8ENF24R9V, RC1206FR-0724R9L, and RMCF1206FT24R9) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) formats. CR1206-FX-24R9ELF, ERJ-8ENF24R9V, RC1206FR-0724R9L, RMCF1206FT24R9, and CRCW120624R9FKEAHP are supplied in Tape & Reel format. CRCW120624R9FKEA is available in Cut Tape & Digi-Reel format. Verify packaging compatibility with your procurement and assembly requirements.

Q: Can I use a higher power-rated resistor as a substitute?

A: Yes. CRCW120624R9FKEAHP (0.75W) can substitute for RCS3216F24R9CS (0.25W) in applications where the circuit design permits. The higher power rating provides additional thermal margin and pulse-withstanding capability. However, verify that the slightly different package dimensions (3.10mm L x 1.60mm W vs 3.20mm L x 1.60mm W) are compatible with your PCB layout.

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