RCS3216F301CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F301CS is a 300 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, operating across -55°C to 155°C with ±100ppm/°C temperature coefficient. The part maintains Active product status with 859 pieces currently in stock.

Equivalent and substitute parts are identified when designs require alternative sourcing due to supply constraints, manufacturing discontinuation, or specific application requirements such as automotive qualification or enhanced power ratings. Substitution eligibility is determined by matching resistance value, tolerance, power rating, package dimensions, and thermal specifications.

Key Parameters

Parameter	Value
Resistance	300 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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RCS3216F301CS are classified into two functional groups based on electrical and mechanical compatibility:

Group 1: Direct Equivalents (0.25W, 1/4W Rating) Parts meeting all primary electrical specifications: 300 Ohms resistance, ±1% tolerance, 0.25W power rating, 1206 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. These parts are interchangeable in applications where the original power dissipation requirement is 0.25W or less.

Included parts: AC1206FR-07300RL, CR1206-FX-3000ELF, CRCW1206300RFKEA, ERJ-8ENF3000V, RC1206FR-07300RL

Group 2: Enhanced Power Rating (0.75W, 3/4W Rating) Parts matching all electrical specifications except power rating, which is elevated to 0.75W. These components occupy the same 1206 package footprint and maintain identical resistance, tolerance, and thermal characteristics. Enhanced power rating provides additional design margin in applications subject to transient or sustained power dissipation above 0.25W.

Included parts: CRCW1206300RFKEAHP

Substitution eligibility is determined exclusively by: resistance value match (300 Ohms), tolerance match (±1%), package match (1206), composition match (thick film), temperature coefficient match (±100ppm/°C), and operating temperature range match (-55°C to 155°C).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Size L x W (mm)	Height Max (mm)	RoHS Status	Product Status
RCS3216F301CS	Samsung Electro-Mechanics	300 Ohms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	3.20 x 1.60	0.66	ROHS3	Active
AC1206FR-07300RL	YAGEO	300 Ohms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	3.10 x 1.60	0.65	ROHS3	Active
CR1206-FX-3000ELF	Bourns Inc.	300 Ohms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	3.20 x 1.60	0.75	ROHS3	Active
CRCW1206300RFKEA	Vishay Dale	300 Ohms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	3.20 x 1.60	0.60	ROHS3	Active
CRCW1206300RFKEAHP	Vishay Dale	300 Ohms	±1%	0.75W	1206	±100ppm/°C	-55°C ~ 155°C	3.10 x 1.60	0.65	ROHS3	Active
ERJ-8ENF3000V	Panasonic Electronic Components	300 Ohms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	3.20 x 1.60	0.70	ROHS3	Not For New Designs
RC1206FR-07300RL	YAGEO	300 Ohms	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	3.10 x 1.60	0.65	ROHS3	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Direct Equivalents)

AC1206FR-07300RL, CR1206-FX-3000ELF, CRCW1206300RFKEA, and RC1206FR-07300RL are suitable direct substitutes. All maintain Active product status, matching electrical and mechanical specifications of the RCS3216F301CS. AC1206FR-07300RL and CRCW1206300RFKEA carry AEC-Q200 automotive qualification, appropriate for applications requiring automotive-grade reliability. CR1206-FX-3000ELF and RC1206FR-07300RL provide moisture-resistant construction without automotive qualification. Selection among these four parts depends on application requirements for automotive compliance and packaging format (Tape & Reel versus Cut Tape).

Enhanced Power Rating Substitute

CRCW1206300RFKEAHP provides 0.75W power rating within the same 1206 package footprint. This part is suitable for designs where power dissipation may exceed 0.25W or where design margin enhancement is required. AEC-Q200 automotive qualification and pulse withstanding capability are included. This part is appropriate for substitution only when the application circuit can accommodate the higher power rating without thermal or layout constraints.

Obsolescence Consideration

ERJ-8ENF3000V carries "Not For New Designs" product status. While electrically and mechanically equivalent to the RCS3216F301CS, this part should not be selected for new designs. Existing designs currently using ERJ-8ENF3000V may continue operation, but migration to Active-status alternatives is recommended for long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can AC1206FR-07300RL replace RCS3216F301CS in all applications?

A: AC1206FR-07300RL is electrically and mechanically equivalent, matching 300 Ohms resistance, ±1% tolerance, 0.25W power rating, 1206 package, and thermal specifications. Substitution is valid for all applications where the original part was specified. AC1206FR-07300RL includes AEC-Q200 automotive qualification, which may provide additional compliance value in automotive designs.

Q: What is the difference between CRCW1206300RFKEA and CRCW1206300RFKEAHP?

A: Both parts are manufactured by Vishay Dale in 1206 package with 300 Ohms ±1% resistance. The primary difference is power rating: CRCW1206300RFKEA is rated 0.25W (1/4W), while CRCW1206300RFKEAHP is rated 0.75W (3/4W). Both carry AEC-Q200 automotive qualification. CRCW1206300RFKEAHP includes pulse withstanding capability. Selection depends on circuit power dissipation requirements.

Q: Why is ERJ-8ENF3000V marked "Not For New Designs"?

A: ERJ-8ENF3000V carries "Not For New Designs" status, indicating the manufacturer has discontinued active promotion and development of this part. While the component remains electrically and mechanically equivalent to RCS3216F301CS, new designs should specify Active-status alternatives such as AC1206FR-07300RL, CR1206-FX-3000ELF, CRCW1206300RFKEA, or RC1206FR-07300RL to ensure long-term supply availability and manufacturer support.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts, including the main part RCS3216F301CS, maintain ROHS3 compliance. All parts also carry Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status, matching the environmental and regulatory profile of the original component.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are supplied in two packaging formats: Tape & Reel (TR) and Cut Tape (CT) with Digi-Reel®. AC1206FR-07300RL, CR1206-FX-3000ELF, CRCW1206300RFKEA, CRCW1206300RFKEAHP, and ERJ-8ENF3000V are supplied in Tape & Reel format. RC1206FR-07300RL is supplied in Cut Tape & Digi-Reel® format. Packaging selection depends on assembly process requirements and volume specifications.

Q: Can CRCW1206300RFKEAHP be used as a direct replacement for 0.25W applications?

A: CRCW1206300RFKEAHP is electrically compatible with 0.25W applications, as higher power rating components operate safely at lower power levels. However, substitution should be evaluated based on circuit design intent. If the original design specified 0.25W rating, the higher 0.75W rating of CRCW1206300RFKEAHP may indicate over-specification unless additional design margin is intentional.

Q: What is the significance of AEC-Q200 qualification on substitute parts?

A: AEC-Q200 is an automotive industry standard qualification for passive components. AC1206FR-07300RL, CRCW1206300RFKEA, CRCW1206300RFKEAHP, and ERJ-8ENF3000V carry AEC-Q200 certification, indicating compliance with automotive reliability and environmental stress testing requirements. This qualification is relevant for automotive applications but not required for general industrial or consumer applications.

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