RCS3216J680CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216J680CS is a 68 Ohm ±5% 0.25W thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This component features anti-sulfur and moisture-resistant construction, operating across -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is RoHS3 compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources provide identical or superior tolerance specifications while maintaining the same package footprint, power rating, and operating temperature range.

Key Parameters

Parameter	Value	Specification Basis
Resistance	68 Ohms	Core electrical specification
Tolerance	±5%	Acceptable tolerance range for substitution
Power Rating	0.25W (1/4W)	Thermal dissipation capability
Package / Case	1206 (3216 Metric)	Physical footprint and mounting compatibility
Composition	Thick Film	Construction technology
Operating Temperature	-55°C ~ 155°C	Environmental operating range
Temperature Coefficient	±100ppm/°C	Thermal stability specification
RoHS Status	ROHS3 Compliant	Environmental compliance requirement
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution logic is based on strict parameter matching across electrical and mechanical specifications. The following criteria determine equivalency:

Primary Matching Criteria:

Resistance value: 68 Ohms (exact match required)
Package format: 1206 (3216 Metric) (exact match required)
Power rating: 0.25W minimum (equal or higher acceptable)
Composition: Thick Film (exact match required)
Operating temperature range: -55°C to 155°C minimum (equal or wider acceptable)
Temperature coefficient: ±100ppm/°C (exact match required)
RoHS3 compliance: Required
MSL Level: 1 (Unlimited) (exact match required)

Secondary Consideration:

Tolerance: ±5% acceptable; ±1% tolerance parts are direct upgrades with superior accuracy

Substitute parts are grouped into two categories based on tolerance specification: parts matching the ±5% tolerance of the main part, and parts offering improved ±1% tolerance while maintaining all other electrical and mechanical parameters.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp (°C)	RoHS3	MSL	Product Status
RCS3216J680CS	Samsung Electro-Mechanics	68Ω	±5%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
AC1206JR-0768RL	YAGEO	68Ω	±5%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
RC1206JR-0768RL	YAGEO	68Ω	±5%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
AC1206FR-0768RL	YAGEO	68Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
CR1206-FX-68R0ELF	Bourns Inc.	68Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
CRCW120668R0FKEA	Vishay Dale	68Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
CRCW120668R0FKEAHP	Vishay Dale	68Ω	±1%	0.75	1206	±100ppm/°C	-55~155	Yes	1	Active
RC1206FR-0768RL	YAGEO	68Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Active
ERJ-8ENF68R0V	Panasonic Electronic Components	68Ω	±1%	0.25	1206	±100ppm/°C	-55~155	Yes	1	Not For New Designs

Engineering Selection Recommendations

Direct Equivalents (±5% Tolerance):

AC1206JR-0768RL and RC1206JR-0768RL are direct functional equivalents to RCS3216J680CS. Both parts maintain identical electrical specifications, package format, and operating parameters. Both manufacturers (YAGEO) provide Active product status with full RoHS3 compliance and MSL Level 1 rating. These parts are suitable for direct substitution in applications where ±5% tolerance is specified.

Upgraded Alternatives (±1% Tolerance):

AC1206FR-0768RL, CR1206-FX-68R0ELF, CRCW120668R0FKEA, and RC1206FR-0768RL provide superior tolerance specification (±1%) while maintaining all other electrical and mechanical parameters. These parts are compatible substitutes for applications where improved accuracy is beneficial. All four parts carry Active product status and full compliance certifications.

Enhanced Power Rating Option:

CRCW120668R0FKEAHP offers 0.75W power rating (3× the main part specification) in identical 1206 package format with ±1% tolerance. This part is suitable for applications requiring higher thermal dissipation capability while maintaining the same footprint and electrical characteristics.

Legacy Status Consideration:

ERJ-8ENF68R0V meets all electrical and mechanical specifications but carries "Not For New Designs" product status. This part is available in inventory but should not be selected for new circuit designs. Use only when existing designs require continuation or repair of legacy equipment.

Frequently Asked Questions (FAQ)

Q: Can I substitute RCS3216J680CS with a ±1% tolerance part?

A: Yes. Parts with ±1% tolerance (AC1206FR-0768RL, CR1206-FX-68R0ELF, CRCW120668R0FKEA, RC1206FR-0768RL) are direct substitutes. The tighter tolerance provides improved accuracy while maintaining identical package, power rating, and operating temperature specifications.

Q: Are all substitute parts in 1206 package format?

A: Yes. All listed substitute parts use 1206 (3216 Metric) package format, ensuring identical PCB footprint and mounting compatibility with RCS3216J680CS.

Q: What is the difference between AC1206JR-0768RL and AC1206FR-0768RL?

A: Both are YAGEO parts in 1206 package with 68 Ohm resistance. AC1206JR-0768RL has ±5% tolerance matching the main part. AC1206FR-0768RL has ±1% tolerance, providing superior accuracy. All other electrical and mechanical parameters are identical.

Q: Can I use CRCW120668R0FKEAHP as a direct replacement?

A: CRCW120668R0FKEAHP is mechanically and electrically compatible but provides 0.75W power rating versus the 0.25W specification of RCS3216J680CS. This higher power rating does not create compatibility issues; the part will function correctly in circuits designed for 0.25W resistors. Use this part when thermal margin or pulse withstanding capability is required.

Q: Why is ERJ-8ENF68R0V marked "Not For New Designs"?

A: ERJ-8ENF68R0V carries legacy product status from Panasonic. While the part meets all electrical and mechanical specifications, it should not be selected for new circuit designs. Use only for repair or continuation of existing equipment using this specific part number.

Q: Do all substitute parts have the same operating temperature range?

A: Yes. All substitute parts operate across -55°C to 155°C with ±100ppm/°C temperature coefficient, matching the main part specification.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts carry RoHS3 compliance certification and MSL Level 1 (Unlimited) moisture sensitivity rating.

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