RCS3216F684CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F684CS 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 anti-sulfur and moisture-resistant properties. Equivalent and substitute parts are identified based on matching electrical specifications (680 kOhms resistance, ±1% tolerance, 0.25W power rating) and mechanical compatibility (1206 package, 2 terminations) while maintaining compliance with RoHS3 and REACH standards.

Key Parameters

Parameter	Value	Specification Basis
Resistance	680 kOhms	Primary electrical specification
Tolerance	±1%	Accuracy requirement
Power Rating	0.25W (1/4W)	Thermal dissipation capacity
Package Type	1206 (3216 Metric)	Physical form factor and PCB compatibility
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Stability over temperature range
Operating Temperature	-55°C ~ 155°C	Environmental operating limits
Terminations	2	Connection points
RoHS Status	ROHS3 Compliant	Environmental compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

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

Mandatory Matching Criteria:

Resistance value: 680 kOhms
Tolerance: ±1%
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C
Terminations: 2
RoHS3 Compliance: Required

Power Rating Consideration: Substitute parts are grouped into two categories based on power rating:

Direct Equivalents (0.25W): Parts with identical 0.25W power rating provide direct functional replacement
Higher Power Variants (0.75W): Parts with elevated power rating (0.75W) provide enhanced thermal capability while maintaining all other specifications; these are suitable for applications where additional power margin is beneficial

Compliance and Certifications: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating. Automotive-qualified variants (AEC-Q200) are identified separately but remain electrically and mechanically compatible with non-automotive versions.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp (°C)	Features	Product Status	Packaging Type
RCS3216F684CS	Samsung Electro-Mechanics	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 ~ 155	Anti-Sulfur, Moisture Resistant	Active	Bulk
AC1206FR-07680KL	YAGEO	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 ~ 155	Automotive AEC-Q200, Moisture Resistant	Active	Tape & Reel
CR1206-FX-6803ELF	Bourns Inc.	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 ~ 155	Moisture Resistant	Active	Tape & Reel
CRCW1206680KFKEA	Vishay Dale	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 ~ 155	Automotive AEC-Q200	Active	Cut Tape & Digi-Reel
CRCW1206680KFKEAHP	Vishay Dale	680 kΩ	±1%	0.75	1206	±100ppm/°C	-55 ~ 155	Automotive AEC-Q200, Pulse Withstanding	Active	Tape & Reel
ERJ-8ENF6803V	Panasonic Electronic Components	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 ~ 155	Automotive AEC-Q200	Not For New Designs	Tape & Reel
RC1206FR-07680KL	YAGEO	680 kΩ	±1%	0.25	1206	±100ppm/°C	-55 ~ 155	Moisture Resistant	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Primary Substitutes (Active Status, Direct Equivalents):

AC1206FR-07680KL (YAGEO), CR1206-FX-6803ELF (Bourns Inc.), CRCW1206680KFKEA (Vishay Dale), and RC1206FR-07680KL (YAGEO) are functionally equivalent to the RCS3216F684CS. All maintain Active product status, identical electrical specifications (680 kΩ ±1%, 0.25W), and full compliance with RoHS3 and REACH requirements. Selection among these options is determined by packaging preference (Tape & Reel versus Cut Tape & Digi-Reel) and availability requirements.

Automotive-Qualified Variants:

AC1206FR-07680KL, CRCW1206680KFKEA, and ERJ-8ENF6803V carry AEC-Q200 automotive qualification. These parts are suitable for applications requiring automotive-grade component certification while maintaining electrical and mechanical compatibility with the base RCS3216F684CS.

Enhanced Power Rating Option:

CRCW1206680KFKEAHP (Vishay Dale) provides 0.75W power rating with pulse withstanding capability in the same 1206 package. This variant is electrically and mechanically compatible but offers increased thermal dissipation margin. Selection of this part is appropriate when application thermal requirements exceed the 0.25W specification of the primary part.

Obsolescence Consideration:

ERJ-8ENF6803V (Panasonic Electronic Components) carries "Not For New Designs" status. While electrically and mechanically equivalent, this part should not be selected for new product development. Existing designs currently using this part may continue procurement, but migration to Active-status alternatives is recommended for long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can AC1206FR-07680KL be used as a direct replacement for RCS3216F684CS?

A: Yes. AC1206FR-07680KL matches all critical parameters: 680 kΩ resistance, ±1% tolerance, 0.25W power rating, 1206 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and RoHS3 compliance. The primary difference is packaging format (Tape & Reel versus bulk) and the addition of AEC-Q200 automotive qualification, which does not restrict use in non-automotive applications.

Q: What is the difference between CRCW1206680KFKEA and CRCW1206680KFKEAHP?

A: Both parts are manufactured by Vishay Dale in 1206 package with 680 kΩ ±1% specifications. The primary difference is power rating: CRCW1206680KFKEA is rated 0.25W, while CRCW1206680KFKEAHP is rated 0.75W with pulse withstanding capability. The higher power variant is mechanically compatible but provides enhanced thermal performance. Selection depends on application power dissipation requirements.

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

A: ERJ-8ENF6803V carries "Not For New Designs" status from Panasonic Electronic Components, indicating the manufacturer is transitioning this product line. While the part remains electrically and mechanically equivalent to RCS3216F684CS, new product designs should select from Active-status alternatives such as AC1206FR-07680KL, CR1206-FX-6803ELF, CRCW1206680KFKEA, or RC1206FR-07680KL to ensure long-term supply availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the environmental compliance profile of the RCS3216F684CS.

Q: Does package format (Tape & Reel versus Cut Tape) affect electrical performance?

A: No. Package format affects only handling, storage, and assembly logistics. Tape & Reel and Cut Tape & Digi-Reel packaging contain identical components with identical electrical and mechanical specifications. Selection is based on manufacturing process requirements and inventory management practices.

Q: Can I substitute a 0.75W part (CRCW1206680KFKEAHP) in a circuit designed for 0.25W?

A: Yes. A higher power-rated component is mechanically and electrically compatible with a lower power specification. The 0.75W variant will function identically in the circuit while providing additional thermal margin. This substitution is appropriate when enhanced reliability or thermal performance is desired.

Q: What is Moisture Sensitivity Level (MSL) 1, and why does it matter?

A: MSL 1 indicates unlimited shelf life without moisture control requirements. All listed parts carry MSL 1 rating, meaning they can be stored and handled without specialized moisture-barrier packaging or desiccant requirements, simplifying logistics and inventory management.

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