Equivalent & Substitute Parts for RCS3216F304CS

Part Overview

The RCS3216F304CS is a 300 kOhms ±1% 0.25W 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 with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements call for alternative certifications such as automotive AEC-Q200 qualification or enhanced pulse-withstanding capabilities.

Key Parameters

Parameter	Value
Resistance	300 kOhms
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Primary Substitution Criteria:

Resistance value: 300 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Secondary Considerations:

Power rating may vary (0.25W, 0.5W, or 0.75W) provided the substitute meets or exceeds the original specification
Automotive AEC-Q200 certification is an additional feature that does not disqualify substitution
Product status variations (Active vs. Not For New Designs) are noted for design planning purposes

All substitute parts listed maintain identical electrical and mechanical compatibility with the RCS3216F304CS within the specified parameter constraints.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Product Status	AEC-Q200	RoHS	MSL
RCS3216F304CS	Samsung Electro-Mechanics	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Active	No	ROHS3	1
AC1206FR-07300KL	YAGEO	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Active	Yes	ROHS3	1
CR1206-FX-3003ELF	Bourns Inc.	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Active	No	ROHS3	1
CRCW1206300KFKEA	Vishay Dale	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Active	Yes	ROHS3	1
CRCW1206300KFKEAHP	Vishay Dale	300 kOhms	±1%	0.75W	1206	±100ppm/°C	-55°C ~ 155°C	Active	Yes	ROHS3	1
ERJ-8ENF3003V	Panasonic Electronic Components	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Not For New Designs	Yes	ROHS3	1
ESR18EZPF3003	Rohm Semiconductor	300 kOhms	±1%	0.5W	1206	±100ppm/°C	-55°C ~ 155°C	Active	Yes	ROHS3	1
KTR18EZPF3003	Rohm Semiconductor	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Active	Yes	ROHS3	1
RC1206FR-07300KL	YAGEO	300 kOhms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Active	No	ROHS3	1

Engineering Selection Recommendations

For Standard Applications (Non-Automotive): CR1206-FX-3003ELF (Bourns Inc.) and RC1206FR-07300KL (YAGEO) are suitable substitutes. Both maintain Active product status and full compliance with ROHS3 requirements. These parts are functionally equivalent to the RCS3216F304CS with identical electrical specifications and 1206 package dimensions.

For Automotive Applications: AC1206FR-07300KL (YAGEO), CRCW1206300KFKEA (Vishay Dale), ESR18EZPF3003 (Rohm Semiconductor), and KTR18EZPF3003 (Rohm Semiconductor) carry AEC-Q200 automotive qualification. These parts are suitable for designs requiring automotive-grade component certification while maintaining identical resistance, tolerance, and temperature characteristics.

For Enhanced Power Dissipation: CRCW1206300KFKEAHP (Vishay Dale) provides 0.75W power rating with pulse-withstanding capability, exceeding the original 0.25W specification. This part is appropriate for applications requiring higher transient energy absorption while maintaining all other electrical and mechanical parameters.

For Legacy Design Continuation: ERJ-8ENF3003V (Panasonic Electronic Components) is classified as Not For New Designs but remains available with 101,746 pieces in stock. This part is suitable only for sustaining production of existing designs and should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206300KFKEAHP (0.75W) be used as a direct replacement for RCS3216F304CS (0.25W)?

A: Yes. The CRCW1206300KFKEAHP provides higher power dissipation capability (0.75W vs. 0.25W) while maintaining identical resistance, tolerance, temperature coefficient, and operating temperature range. Higher power rating does not create incompatibility; it provides additional thermal margin. All other electrical and mechanical parameters remain identical.

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

A: AEC-Q200 certification indicates automotive-grade qualification with enhanced reliability testing and traceability requirements. Parts without this certification (such as CR1206-FX-3003ELF and RC1206FR-07300KL) are suitable for general industrial and consumer applications. Parts with AEC-Q200 (such as AC1206FR-07300KL and CRCW1206300KFKEA) meet automotive industry standards and are required for automotive applications.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 1206 package specification. 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). These variations remain within standard 1206 package tolerances and do not affect PCB footprint compatibility or electrical performance.

Q: Why is ERJ-8ENF3003V marked as "Not For New Designs"?

A: This designation indicates that Panasonic has discontinued active development and recommends alternative parts for new product designs. However, the part remains available for sustaining production of existing designs. For new designs, select from Active status alternatives such as AC1206FR-07300KL, CRCW1206300KFKEA, or KTR18EZPF3003.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original RCS3216F304CS specification. This ensures environmental compliance and handling compatibility across all alternatives.

Q: What is the significance of temperature coefficient ±100ppm/°C?

A: Temperature coefficient defines resistance change per degree Celsius. All listed parts maintain ±100ppm/°C, ensuring identical thermal stability across the -55°C to 155°C operating range. This parameter is critical for precision analog circuits and must remain constant across substitutions.

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