RCS3216F393CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F393CS is a 39 kOhm ±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. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct circuit board replacement capability.

Key Parameters

Parameter	Specification
Resistance Value	39 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)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RCS3216F393CS are qualified based on the following criteria:

Primary Matching Parameters:

Resistance value: 39 kOhms
Tolerance: ±1%
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

Substitution Categories:

Category 1: Direct Equivalents (0.25W Power Rating) Parts with identical power rating (0.25W), dimensions, and all electrical parameters. These provide one-to-one replacement without circuit re-evaluation.

Category 2: Higher Power Rating Variants (0.75W Power Rating) Parts with elevated power dissipation capability while maintaining all other specifications. These are suitable for applications requiring additional thermal margin.

Category 3: Automotive-Qualified Variants (AEC-Q200) Parts meeting automotive qualification standards with identical electrical and mechanical specifications. These are suitable for automotive and high-reliability applications.

Category 4: Legacy/Discontinued Status Parts no longer recommended for new designs but functionally equivalent for replacement applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status	AEC-Q200
RCS3216F393CS	Samsung Electro-Mechanics	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Anti-Sulfur, Moisture Resistant	Active	No
AC1206FR-0739KL	YAGEO	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	Active	Yes
CR1206-FX-3902ELF	Bourns Inc.	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Moisture Resistant	Active	No
CRCW120639K0FKEA	Vishay Dale	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Active	Yes
CRCW120639K0FKEAHP	Vishay Dale	39 kΩ	±1%	0.75	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Pulse Withstanding	Active	Yes
ERJ-8ENF3902V	Panasonic Electronic Components	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Not For New Designs	Yes
RC1206FR-0739KL	YAGEO	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Moisture Resistant	Active	No

Engineering Selection Recommendations

For Standard Industrial Applications: Select CR1206-FX-3902ELF (Bourns Inc.) or RC1206FR-0739KL (YAGEO). Both parts maintain Active product status, provide moisture resistance, and offer high inventory availability (60,463 and 60,292 units respectively). These are suitable for general-purpose circuit applications requiring standard reliability.

For Automotive and High-Reliability Applications: Select CRCW120639K0FKEA (Vishay Dale) or AC1206FR-0739KL (YAGEO). Both parts carry AEC-Q200 automotive qualification, maintain Active product status, and provide the required electrical and thermal specifications. CRCW120639K0FKEA offers 24,788 units in stock; AC1206FR-0739KL offers 10,928 units.

For Applications Requiring Enhanced Thermal Performance: Select CRCW120639K0FKEAHP (Vishay Dale) when circuit design permits higher power dissipation capability. This 0.75W variant provides pulse withstanding characteristics and AEC-Q200 qualification with 1,346 units available.

For Replacement of Discontinued Components: ERJ-8ENF3902V (Panasonic Electronic Components) is marked "Not For New Designs" but remains functionally equivalent for replacement applications. This part carries AEC-Q200 qualification and has 67,214 units in stock for legacy system support.

Frequently Asked Questions (FAQ)

Q: Can CRCW120639K0FKEAHP (0.75W) be used as a direct replacement for RCS3216F393CS (0.25W)?

A: Yes. The 0.75W variant is electrically and mechanically compatible. The higher power rating provides additional thermal margin without affecting circuit operation. The component will operate within the same temperature range and maintain identical resistance and tolerance specifications.

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

A: AEC-Q200 qualification indicates the part meets automotive industry reliability and quality standards. Parts with this certification (AC1206FR-0739KL, CRCW120639K0FKEA, CRCW120639K0FKEAHP, ERJ-8ENF3902V) are suitable for automotive applications and high-reliability environments. Non-qualified parts (CR1206-FX-3902ELF, RC1206FR-0739KL) are suitable for standard industrial 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); height ranges from 0.024" to 0.030" (0.60mm to 0.75mm). All parts fit standard 1206 footprints. Verify PCB layout tolerances for critical applications.

Q: Why is ERJ-8ENF3902V marked "Not For New Designs"?

A: This designation indicates Panasonic has transitioned this product line. The part remains functionally equivalent and available in high quantity (67,214 units) for replacement and legacy system support, but new circuit designs should specify alternative active-status parts.

Q: What packaging options are available?

A: RCS3216F393CS is supplied in standard packaging. Substitute parts are available in Tape & Reel (TR) format for automated assembly or Cut Tape (CT) & Digi-Reel® format for manual placement. Verify packaging compatibility with assembly equipment specifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original RCS3216F393CS specification.

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