RC3216F391CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F391CS is a 390 Ohm ±1% 0.25W (1/4W) chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently in active production status with 952 pieces in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct circuit board compatibility.

Key Parameters

Parameter	Specification
Resistance Value	390 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 to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC3216F391CS are classified into two categories based on functional equivalence and application suitability:

Direct Substitutes share identical electrical specifications (390 Ohms, ±1% tolerance, 0.25W power rating) and mechanical compatibility (1206 package, 2 terminations, -55°C to 155°C operating range, ±100ppm/°C temperature coefficient). These parts are interchangeable in standard applications without circuit modification.

Similar Substitutes maintain core electrical and mechanical parameters but include enhanced features such as automotive AEC-Q200 qualification, pulse withstanding capability, or higher power ratings (0.75W). These parts are suitable for applications requiring additional performance margins or specific environmental certifications.

The critical parameters determining substitutability are:

Resistance value: 390 Ohms
Tolerance: ±1%
Package format: 1206 (3216 Metric)
Power rating: 0.25W minimum
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Termination count: 2

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status	Inventory (Pcs)
RC3216F391CS	Samsung Electro-Mechanics	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	952
CR1206-FX-3900ELF	Bourns Inc.	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	53952
CRG1206F390R	TE Connectivity Passive Product	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	—	Active	20930
ERJ-8ENF3900V	Panasonic Electronic Components	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Not For New Designs	90944
RC1206FR-07390RL	YAGEO	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	145023
RMCF1206FT390R	Stackpole Electronics Inc	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	192810
AC1206FR-07390RL	YAGEO	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	Active	20726
CRCW1206390RFKEA	Vishay Dale	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	21945
CRCW1206390RFKEAHP	Vishay Dale	390 Ω	±1%	0.75	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	Active	16065
KTR18EZPF3900	Rohm Semiconductor	390 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, High Voltage	Active	10443

Engineering Selection Recommendations

For Standard Applications (Non-Automotive): Select CR1206-FX-3900ELF (Bourns Inc.) or RC1206FR-07390RL (YAGEO) as primary alternatives. Both maintain active product status, moisture-resistant composition, and identical electrical specifications to the RC3216F391CS. CR1206-FX-3900ELF offers significantly higher inventory availability (53,952 pcs). RC1206FR-07390RL provides the largest stock position (145,023 pcs) for high-volume requirements.

For Automotive Applications: Select RMCF1206FT390R (Stackpole Electronics Inc), AC1206FR-07390RL (YAGEO), CRCW1206390RFKEA (Vishay Dale), or KTR18EZPF3900 (Rohm Semiconductor). All four parts carry AEC-Q200 automotive qualification and active product status. RMCF1206FT390R provides the highest inventory (192,810 pcs) with AEC-Q200 certification. AC1206FR-07390RL combines AEC-Q200 qualification with moisture-resistant features.

For Applications Requiring Enhanced Power Margin: CRCW1206390RFKEAHP (Vishay Dale) provides 0.75W power rating with pulse withstanding capability and AEC-Q200 qualification, suitable for circuits experiencing transient stress conditions while maintaining 1206 package compatibility.

Parts to Avoid for New Designs: ERJ-8ENF3900V (Panasonic Electronic Components) carries "Not For New Designs" status and should not be selected for new circuit development despite adequate inventory and AEC-Q200 qualification.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC3216F391CS with any of the listed parts without PCB modification?

A: Yes. All direct substitute parts (CR1206-FX-3900ELF, CRG1206F390R, RC1206FR-07390RL, RMCF1206FT390R, AC1206FR-07390RL, CRCW1206390RFKEA, and KTR18EZPF3900) share identical 1206 package dimensions, 2-pin termination configuration, and electrical specifications (390 Ohms ±1%, 0.25W, ±100ppm/°C). Direct PCB substitution is possible without circuit redesign.

Q: What is the difference between direct substitutes and similar substitutes?

A: Direct substitutes maintain identical power ratings (0.25W) and standard features. Similar substitutes include CRCW1206390RFKEAHP, which provides higher power rating (0.75W) and pulse withstanding capability. The higher power rating allows operation under more demanding thermal conditions but does not affect basic circuit functionality.

Q: Are automotive-qualified parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts exceed standard reliability requirements and are fully compatible with non-automotive circuits. AEC-Q200 certification indicates enhanced qualification testing and is not restrictive for general-purpose applications.

Q: What is the significance of moisture-resistant composition?

A: Moisture-resistant thick film composition (present in RC3216F391CS, CR1206-FX-3900ELF, RC1206FR-07390RL, and AC1206FR-07390RL) provides enhanced stability in humid environments and extended shelf life. This feature is beneficial but not mandatory for standard indoor applications.

Q: Why does ERJ-8ENF3900V show "Not For New Designs" status?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new circuit designs. Existing inventory remains available for legacy system support, but new projects should select parts with "Active" status.

Q: How do I select between multiple active substitute options?

A: Selection criteria include: (1) inventory availability for production volume requirements, (2) application environment (automotive vs. standard), (3) packaging format preference (Tape & Reel vs. Cut Tape), and (4) feature requirements (moisture resistance, high voltage, pulse withstanding). All active parts meet core electrical and mechanical compatibility requirements.

Q: Is the 0.75W variant (CRCW1206390RFKEAHP) a direct substitute?

A: The 0.75W variant is mechanically and electrically compatible but provides higher power dissipation capability. It functions as a direct substitute with enhanced thermal margin. Use this variant only if circuit analysis confirms the need for higher power rating; standard 0.25W parts are adequate for most applications.

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