RCS3216J390CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216J390CS is a 39 Ohm ±5% 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. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental compliance ratings. Alternative components may be required due to supply chain availability, specific application certifications, or tolerance requirements.

Key Parameters

Parameter	Value
Resistance	39 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 ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Parameters:

Resistance value: 39 Ohms (exact match required)
Package / Case: 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 Matching Parameters:

Tolerance: ±5% (primary specification) or ±1% (tighter tolerance acceptable for direct substitution)
Power Rating: 0.25W (primary specification) or 0.75W (higher rating acceptable for direct substitution)

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (±5% Tolerance, 0.25W): Parts with identical tolerance and power rating specifications.

Category B - Enhanced Substitutes (±1% Tolerance and/or 0.75W): Parts with improved tolerance or higher power rating while maintaining all other core parameters.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	RoHS	MSL	Product Status
RCS3216J390CS	Samsung Electro-Mechanics	39 Ω	±5%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
AC1206JR-0739RL	YAGEO	39 Ω	±5%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
RC1206JR-0739RL	YAGEO	39 Ω	±5%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
AC1206FR-0739RL	YAGEO	39 Ω	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
RC1206FR-0739RL	YAGEO	39 Ω	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
CR1206-FX-39R0ELF	Bourns Inc.	39 Ω	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
CRCW120639R0FKEA	Vishay Dale	39 Ω	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
CRCW120639R0FKEAHP	Vishay Dale	39 Ω	±1%	0.75	1206	±100ppm/°C	-55~155°C	ROHS3	1	Active
ERJ-8ENF39R0V	Panasonic Electronic Components	39 Ω	±1%	0.25	1206	±100ppm/°C	-55~155°C	ROHS3	1	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

AC1206JR-0739RL (YAGEO) and RC1206JR-0739RL (YAGEO) are direct functional equivalents with matching ±5% tolerance and 0.25W power rating. Both components maintain Active product status and full compliance with ROHS3 and MSL 1 requirements. These parts are suitable for applications requiring no specification changes from the original RCS3216J390CS.

For Enhanced Tolerance Applications:

AC1206FR-0739RL (YAGEO), RC1206FR-0739RL (YAGEO), CR1206-FX-39R0ELF (Bourns Inc.), and CRCW120639R0FKEA (Vishay Dale) provide ±1% tolerance while maintaining all other core parameters. These components are appropriate for applications requiring tighter tolerance control. All four parts maintain Active product status and full compliance certifications.

For Higher Power Dissipation:

CRCW120639R0FKEAHP (Vishay Dale) offers 0.75W power rating with ±1% tolerance in the same 1206 package. This component is suitable for applications requiring increased power handling capability while maintaining dimensional compatibility.

Product Status Consideration:

ERJ-8ENF39R0V (Panasonic Electronic Components) is classified as "Not For New Designs" despite meeting all electrical and mechanical specifications. This component is available for legacy system support and maintenance applications only.

Frequently Asked Questions (FAQ)

Q: Can AC1206JR-0739RL replace RCS3216J390CS in any application?

A: AC1206JR-0739RL is a direct functional equivalent with identical resistance, tolerance, power rating, package, and environmental specifications. It is suitable for direct replacement in applications where the original part was specified.

Q: What is the difference between ±5% and ±1% tolerance parts?

A: Tolerance defines the acceptable deviation from the nominal 39 Ohm resistance value. ±5% tolerance allows deviation between 37.05 and 40.95 Ohms. ±1% tolerance restricts deviation to 38.61 and 39.39 Ohms. Parts with ±1% tolerance are suitable for applications requiring tighter resistance control and can replace ±5% specified parts without functional impact.

Q: Is CRCW120639R0FKEAHP compatible with RCS3216J390CS?

A: CRCW120639R0FKEAHP maintains identical package dimensions (1206), resistance value (39 Ohms), temperature coefficient, and operating range. The primary difference is increased power rating (0.75W versus 0.25W) and improved tolerance (±1% versus ±5%). This component is mechanically and electrically compatible and suitable for applications where higher power dissipation is beneficial or required.

Q: Why is ERJ-8ENF39R0V marked "Not For New Designs"?

A: ERJ-8ENF39R0V meets all electrical and mechanical specifications for substitution. The "Not For New Designs" status indicates the manufacturer recommends alternative parts for new product development. This component remains suitable for legacy system maintenance and repair applications.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed in this reference maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original RCS3216J390CS specifications.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats. Packaging selection does not affect electrical or mechanical compatibility; selection is based on procurement and assembly process requirements.

Q: Can I use a substitute part with different physical dimensions?

A: All substitute parts maintain the 1206 (3216 Metric) package specification with compatible physical dimensions. Dimensional variations within the 1206 standard (length 0.122" to 0.126", width 0.063", height 0.024" to 0.030") do not affect PCB assembly compatibility or electrical performance.

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