RCS3216F181CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F181CS is a 180 Ohm ±1% 0.25W (1/4W) thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. This component is classified as Active product status and features anti-sulfur and moisture-resistant construction. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings are maintained across alternative manufacturers while preserving functional compatibility in circuit applications.

Key Parameters

Parameter	Value
Resistance	180 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 (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RCS3216F181CS are qualified based on strict equivalence of the following parameters:

Critical Matching Parameters:

Resistance value: 180 Ohms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

Allowable Variations:

Manufacturer identity (different suppliers)
Packaging format (Cut Tape, Digi-Reel, Tape & Reel)
Physical dimensions within tolerance (length 0.122" to 0.126", height 0.024" to 0.030")
Optional certifications (AEC-Q200 automotive qualification)

Non-Substitutable Variants:

CRCW1206180RFKEAHP is excluded from direct substitution due to higher power rating (0.75W / 3/4W), which represents a different product category despite identical resistance and package.
ERJ-8ENF1800V is classified as "Not For New Designs" and is included for reference only in legacy system support scenarios.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	RoHS Status	MSL	Product Status
RCS3216F181CS	Samsung Electro-Mechanics	180 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
AC1206FR-07180RL	YAGEO	180 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
CR1206-FX-1800ELF	Bourns Inc.	180 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
CRCW1206180RFKEA	Vishay Dale	180 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
RC1206FR-07180RL	YAGEO	180 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Equivalence):

The following parts are direct functional equivalents with Active product status:

AC1206FR-07180RL (YAGEO): Includes AEC-Q200 automotive qualification. Suitable for applications requiring automotive-grade reliability.
CR1206-FX-1800ELF (Bourns Inc.): Standard industrial-grade equivalent with highest inventory availability (32,025 pcs).
CRCW1206180RFKEA (Vishay Dale): AEC-Q200 qualified. Lowest seated height (0.024" / 0.60mm) for space-constrained layouts.
RC1206FR-07180RL (YAGEO): Highest inventory availability (109,801 pcs). Standard industrial-grade equivalent without automotive certification.

Legacy Reference (Not For New Designs):

ERJ-8ENF1800V (Panasonic Electronic Components): Classified as "Not For New Designs." Included for reference in existing system maintenance and legacy board revisions only.

Excluded from Substitution:

CRCW1206180RFKEAHP (Vishay Dale): Power rating 0.75W (3/4W) represents a different product category and is not interchangeable with 0.25W specifications.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and identical electrical performance within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206180RFKEAHP be used as a substitute for RCS3216F181CS?

A: No. CRCW1206180RFKEAHP has a power rating of 0.75W (3/4W), while RCS3216F181CS is rated 0.25W (1/4W). These are distinct product categories. Using a higher-power component may introduce unintended circuit behavior and is not a valid substitution.

Q: What is the difference between AC1206FR-07180RL and RC1206FR-07180RL?

A: Both are YAGEO 180 Ohm ±1% 1206 resistors. AC1206FR-07180RL includes AEC-Q200 automotive qualification; RC1206FR-07180RL is standard industrial grade. Electrical performance is identical. Selection depends on application requirements for automotive certification.

Q: Are all substitute parts available in the same packaging formats?

A: No. Packaging varies: AC1206FR-07180RL and RC1206FR-07180RL are supplied in Cut Tape (CT) & Digi-Reel format; CR1206-FX-1800ELF, CRCW1206180RFKEA, and ERJ-8ENF1800V are supplied in Tape & Reel (TR) format. Verify packaging compatibility with procurement and assembly processes.

Q: Is ERJ-8ENF1800V suitable for new product designs?

A: No. ERJ-8ENF1800V is classified as "Not For New Designs." This part is included for reference in legacy system support and existing board revisions only. Use active-status alternatives for new designs.

Q: Do all substitutes meet RoHS3 and MSL requirements?

A: Yes. All listed substitutes are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the original RCS3216F181CS specifications.

Q: What is the significance of AEC-Q200 certification on some substitutes?

A: AEC-Q200 is an automotive industry qualification standard. Parts with this certification (AC1206FR-07180RL, CRCW1206180RFKEA, ERJ-8ENF1800V) are qualified for automotive applications. Non-certified parts (CR1206-FX-1800ELF, RC1206FR-07180RL) are suitable for industrial and consumer applications.

Q: Can physical dimension variations affect PCB layout compatibility?

A: Dimension variations are within acceptable tolerance for 1206 package footprints. Length ranges from 0.122" to 0.126"; height from 0.024" to 0.030". Standard 1206 PCB pads accommodate all listed substitutes. Verify specific layout constraints for high-density applications.

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