RC3216F684CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F684CS is a 680 kOhms ±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 721 pieces currently in stock. The RC series resistor is designed for general-purpose applications requiring moisture-resistant thick film construction. Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative packaging formats are required, or when design specifications call for enhanced features such as automotive qualification or pulse-withstanding capability.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	680 kOhms	Core electrical specification
Tolerance	±1%	Precision requirement
Power Rating	0.25W (1/4W)	Thermal dissipation capacity
Package Type	1206 (3216 Metric)	Physical form factor
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Temperature stability
Operating Temperature Range	-55°C to 155°C	Environmental limits
RoHS Status	ROHS3 Compliant	Environmental compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling requirement

Substitute Part Grouping Explanation

Substitution eligibility for the RC3216F684CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 680 kOhms
Tolerance: ±1%
Package/Case: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C to 155°C
Number of Terminations: 2
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: MSL 1 (Unlimited)

Power Rating Consideration: The primary part specifies 0.25W (1/4W) power rating. Direct substitutes maintain this specification. One similar part (CRCW1206680KFKEAHP) features enhanced 0.75W (3/4W) rating and is classified as similar rather than direct substitute due to this parameter difference.

Feature Variations: Substitute parts may include additional certifications (Automotive AEC-Q200) or enhanced features (High Voltage, Pulse Withstanding) beyond the base moisture-resistant specification. These additions do not disqualify substitution when all mandatory parameters align.

Product Status: The ERJ-8ENF6803V carries "Not For New Designs" status and is included as a direct substitute based on electrical and mechanical equivalence, though design teams should evaluate this status for new applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status	Inventory
RC3216F684CS	Samsung Electro-Mechanics	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	721
CR1206-FX-6803ELF	Bourns Inc.	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	19347
ERJ-8ENF6803V	Panasonic Electronic Components	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Not For New Designs	70633
RC1206FR-07680KL	YAGEO	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	68802
RMCF1206FT680K	Stackpole Electronics Inc	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	9426
AC1206FR-07680KL	YAGEO	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	Active	16320
CRCW1206680KFKEA	Vishay Dale	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	8243
CRCW1206680KFKEAHP	Vishay Dale	680 kΩ	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	Active	3499
KTR18EZPF6803	Rohm Semiconductor	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, High Voltage	Active	38003
MCR18ERTF6803	Rohm Semiconductor	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Standard Thick Film	Discontinued at DiGi Electronics	1838

Engineering Selection Recommendations

Direct Substitutes (Electrically and Mechanically Equivalent):

CR1206-FX-6803ELF from Bourns Inc. and RC1206FR-07680KL from YAGEO are direct substitutes with Active product status and high inventory availability. Both maintain identical electrical specifications and moisture-resistant thick film construction. CR1206-FX-6803ELF offers 19,347 units in stock with Tape & Reel packaging. RC1206FR-07680KL provides 68,802 units with Cut Tape & Digi-Reel packaging option.

Automotive-Qualified Alternatives:

RMCF1206FT680K (Stackpole Electronics Inc), AC1206FR-07680KL (YAGEO), CRCW1206680KFKEA (Vishay Dale), and KTR18EZPF6803 (Rohm Semiconductor) are all Active products with Automotive AEC-Q200 certification. These parts are suitable for applications requiring automotive-grade reliability. RMCF1206FT680K provides 9,426 units; AC1206FR-07680KL provides 16,320 units; CRCW1206680KFKEA provides 8,243 units; KTR18EZPF6803 provides 38,003 units.

Enhanced Power Rating Option:

CRCW1206680KFKEAHP from Vishay Dale features 0.75W (3/4W) power rating with Pulse Withstanding capability while maintaining all other electrical parameters. This part is classified as similar rather than direct substitute due to the power rating difference. Use this variant only when the application requires enhanced thermal dissipation or pulse handling beyond the standard 0.25W specification.

Legacy Status Consideration:

ERJ-8ENF6803V from Panasonic Electronic Components carries "Not For New Designs" product status. While electrically and mechanically equivalent with 70,633 units available, this part should not be selected for new circuit designs. Existing designs currently using this part may continue with this component for maintenance and repair purposes.

Discontinued Part:

MCR18ERTF6803 from Rohm Semiconductor is discontinued at DiGi Electronics. Although 1,838 units remain in inventory, this part should not be specified for new designs or long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC3216F684CS with any 680 kOhm 1% resistor in 1206 package?

A: No. Substitution requires matching all mandatory parameters: 680 kOhms resistance, ±1% tolerance, 0.25W power rating, 1206 package, thick film composition, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and MSL 1 moisture sensitivity level. Additional features such as automotive certification do not disqualify substitution when these core parameters align.

Q: What is the difference between Direct Substitutes and Similar parts in this reference?

A: Direct substitutes maintain identical electrical and mechanical specifications including power rating (0.25W). Similar parts may have variations in power rating or enhanced features. CRCW1206680KFKEAHP is classified as similar because it provides 0.75W rating instead of 0.25W. This higher rating does not prevent substitution in applications where the original 0.25W specification is adequate, but the part should not be selected solely for its enhanced power capability without circuit analysis.

Q: Why is ERJ-8ENF6803V marked "Not For New Designs"?

A: Product status reflects manufacturer recommendations. "Not For New Designs" indicates the manufacturer is transitioning away from this product line. While the part remains electrically equivalent and suitable for existing designs requiring maintenance or repair, new circuit designs should specify Active-status alternatives such as CR1206-FX-6803ELF or RC1206FR-07680KL.

Q: Are all these parts RoHS3 compliant?

A: Yes. All parts listed in this reference maintain ROHS3 Compliant status and MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with modern manufacturing and environmental requirements.

Q: What packaging options are available?

A: Packaging varies by manufacturer. CR1206-FX-6803ELF is supplied in Tape & Reel (TR) format. RC1206FR-07680KL is available in Cut Tape (CT) & Digi-Reel format. RMCF1206FT680K uses Tape & Reel. AC1206FR-07680KL uses Tape & Reel. CRCW1206680KFKEA and CRCW1206680KFKEAHP use Cut Tape & Digi-Reel. KTR18EZPF6803 uses Tape & Reel. MCR18ERTF6803 uses Cut Tape & Digi-Reel. Verify packaging compatibility with your assembly process before final part selection.

Q: Can I use CRCW1206680KFKEAHP as a direct replacement for RC3216F684CS?

A: CRCW1206680KFKEAHP is electrically compatible but features 0.75W power rating versus the original 0.25W specification. This higher rating does not create incompatibility in circuits designed for 0.25W dissipation. However, this part should be selected only when the application requires enhanced thermal performance or pulse handling, not as a general substitute. For standard applications, use CR1206-FX-6803ELF or RC1206FR-07680KL.

Q: Which substitute offers the highest inventory availability?

A: RC1206FR-07680KL from YAGEO provides the highest inventory with 68,802 units in stock. KTR18EZPF6803 from Rohm Semiconductor offers the second-highest availability with 38,003 units. Both are Active products suitable for immediate procurement.

Q: Are automotive-qualified parts suitable for non-automotive applications?

A: Yes. Automotive AEC-Q200 qualified parts such as RMCF1206FT680K, AC1206FR-07680KL, CRCW1206680KFKEA, and KTR18EZPF6803 meet or exceed general industrial specifications. These parts are suitable for any application requiring the specified electrical and mechanical parameters. Automotive qualification represents additional testing and reliability assurance.

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