RCS3216J181CS Equivalent & Substitute Parts

Part Overview

The RCS3216J181CS is a 180 Ohm ±5% 0.25W (1/4W) thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. 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 ROHS3 compliant with MSL 1 (Unlimited) rating and is currently in active production status with 844 pieces in stock.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design specifications allow for tolerance or feature variations that enable component interchangeability.

Key Parameters

Parameter	Value
Resistance	180 Ohms
Tolerance	±5%
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
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution of the RCS3216J181CS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Resistance value: 180 Ohms
Package / Case: 1206 (3216 Metric)
Power rating: 0.25W (1/4W) minimum
Number of terminations: 2
Operating temperature range: -55°C to 155°C minimum
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
RoHS3 compliance
MSL 1 rating

Allowable Variations:

Tolerance: ±5% (original) to ±1% (tighter tolerance acceptable)
Manufacturer: Different manufacturers acceptable
Packaging format: Cut Tape, Tape & Reel, or Digi-Reel formats interchangeable
Features: Additional features (automotive AEC-Q200, pulse withstanding) acceptable
Physical dimensions: Minor variations within package specification acceptable

Substitute parts must maintain identical electrical performance at the specified resistance value and power rating. Parts with tighter tolerance (±1%) are direct substitutes for ±5% applications. Parts with higher power ratings (0.75W) in the same package are acceptable substitutes. All substitute parts listed maintain the same operating temperature range and environmental compliance requirements.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	RoHS3	MSL	Product Status
RCS3216J181CS	Samsung Electro-Mechanics	180Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
AC1206JR-07180RL	YAGEO	180Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
AC1206FR-07180RL	YAGEO	180Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
RC1206JR-07180RL	YAGEO	180Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
RC1206FR-07180RL	YAGEO	180Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
CR1206-FX-1800ELF	Bourns Inc.	180Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
CRCW1206180RFKEA	Vishay Dale	180Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
CRCW1206180RFKEAHP	Vishay Dale	180Ω	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Yes	1	Active
ERJ-8ENF1800V	Panasonic Electronic Components	180Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	1	Not For New Designs

Engineering Selection Recommendations

Direct Substitutes (Identical Specifications): AC1206JR-07180RL and RC1206JR-07180RL are direct substitutes with matching ±5% tolerance and 0.25W power rating. Both are manufactured by YAGEO and maintain all electrical and environmental specifications of the RCS3216J181CS. Both parts are in active production status.

Upgraded Substitutes (Tighter Tolerance): AC1206FR-07180RL, RC1206FR-07180RL, CR1206-FX-1800ELF, and CRCW1206180RFKEA provide ±1% tolerance while maintaining 0.25W power rating and all other critical parameters. These parts are suitable for applications where tighter tolerance improves circuit performance. All are in active production status.

Higher Power Rating Substitute: CRCW1206180RFKEAHP provides 0.75W power rating in the same 1206 package with ±1% tolerance. This part is suitable for applications requiring increased power dissipation capability while maintaining the same physical footprint and electrical characteristics. Active production status.

Legacy Part (Not Recommended for New Designs): ERJ-8ENF1800V from Panasonic Electronic Components meets all electrical and environmental specifications but carries "Not For New Designs" status. This part should be avoided for new circuit designs and reserved only for legacy system maintenance or replacement applications.

Compliance and Certifications: All recommended substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Parts designated with AEC-Q200 automotive qualification (AC series, CRCW series, ERJ-8EN series) are suitable for automotive applications where additional reliability standards are required.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance resistor in place of the ±5% RCS3216J181CS?

A: Yes. A ±1% tolerance part provides tighter tolerance than the original ±5% specification and is a direct electrical substitute. The ±1% tolerance is a superior specification that maintains compatibility with any circuit designed for ±5% tolerance.

Q: Are all substitute parts available in the same 1206 package?

A: Yes. All listed substitute parts use the 1206 (3216 Metric) package. Physical dimensions vary slightly between manufacturers (ranging from 3.10mm to 3.20mm length and 0.60mm to 0.75mm height), but all conform to the 1206 package standard and are mechanically interchangeable on PCBs designed for this package.

Q: What is the difference between Cut Tape, Tape & Reel, and Digi-Reel packaging?

A: These are different supply formats for the same component. Cut Tape (CT) provides individual strips, Tape & Reel (TR) provides components on continuous tape wound on reels for automated assembly, and Digi-Reel is a smaller reel format. The electrical and mechanical specifications of the component remain identical regardless of packaging format.

Q: Can I use CRCW1206180RFKEAHP (0.75W) instead of the 0.25W RCS3216J181CS?

A: Yes. The 0.75W part is a direct substitute with superior power handling capability. It maintains the same 180 Ohm resistance, ±1% tolerance, 1206 package, and operating temperature range. The higher power rating provides additional design margin for applications with variable or peak power conditions.

Q: Why is ERJ-8ENF1800V marked "Not For New Designs"?

A: This designation indicates the part is in legacy status and the manufacturer is not recommending it for new circuit designs. While the part meets all electrical specifications and is suitable for replacement or maintenance of existing systems, new designs should select from parts with active production status such as AC1206FR-07180RL, RC1206FR-07180RL, CR1206-FX-1800ELF, or CRCW1206180RFKEA.

Q: Are automotive-qualified parts (AEC-Q200) required for my application?

A: AEC-Q200 qualification is required only for automotive applications subject to automotive industry reliability standards. For general industrial or consumer applications, non-automotive qualified parts such as CR1206-FX-1800ELF or RC1206FR-07180RL are suitable. Automotive-qualified parts are acceptable substitutes in any application.

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

A: The temperature coefficient specifies how much the resistance value changes with temperature. All listed substitute parts maintain ±100ppm/°C, ensuring consistent performance across the -55°C to 155°C operating range. This parameter is identical across all substitutes and does not affect substitution decisions.

Q: Can I mix different manufacturers' parts in the same circuit?

A: Yes. All listed substitute parts meet identical electrical specifications, environmental compliance, and operating parameters. Mixing parts from different manufacturers (Samsung, YAGEO, Bourns, Vishay, Panasonic) in the same circuit is acceptable from an engineering standpoint. Supply chain and procurement considerations may influence manufacturer selection.

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