RCS3216J681CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216J681CS is a 680 Ohm ±5% 0.25W (1/4W) 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 maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package size, termination count), and environmental performance characteristics.

Key Parameters

Parameter	Specification
Resistance Value	680 Ohms
Tolerance	±5%
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
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RCS3216J681CS are classified into two primary categories based on electrical and mechanical compatibility:

Category 1: Direct Equivalents (±5% Tolerance, 0.25W) Parts maintaining identical tolerance (±5%) and power rating (0.25W) with 1206 package compatibility. These substitutes provide direct functional replacement without circuit performance modification.

Category 2: Upgraded Alternatives (±1% Tolerance, 0.25W) Parts offering improved tolerance specification (±1% versus ±5%) while maintaining 0.25W power rating and 1206 package format. These parts provide enhanced precision for applications requiring tighter resistance control.

Category 3: Enhanced Power Rating (±1% Tolerance, 0.75W) Parts with upgraded power dissipation capability (0.75W versus 0.25W) and improved tolerance (±1%), maintaining 1206 package compatibility. These are suitable for applications requiring higher thermal performance.

Substitution eligibility is determined by:

Matching resistance value (680 Ohms)
Compatible package format (1206 / 3216 Metric)
Matching or superior tolerance specification
Matching or superior power rating
Identical operating temperature range (-55°C to 155°C)
Identical temperature coefficient (±100ppm/°C)
ROHS3 compliance and MSL 1 rating

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Features	Product Status
RCS3216J681CS	Samsung Electro-Mechanics	680Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Anti-Sulfur, Moisture Resistant	Active
RC3216J681CS	Samsung Electro-Mechanics	680Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active
RC1206JR-07680RL	YAGEO	680Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active
AC1206JR-07680RL	YAGEO	680Ω	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	Active
AF1206FR-07680RL	YAGEO	680Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Anti-Sulfur, Automotive AEC-Q200	Active
AC1206FR-07680RL	YAGEO	680Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	Active
RC1206FR-07680RL	YAGEO	680Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active
CR1206-FX-6800ELF	Bourns Inc.	680Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active
CRCW1206680RFKEA	Vishay Dale	680Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active
CRCW1206680RFKEAHP	Vishay Dale	680Ω	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	Active
ERJ-8ENF6800V	Panasonic Electronic Components	680Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

RC3216J681CS (Samsung Electro-Mechanics) and RC1206JR-07680RL (YAGEO) provide direct functional equivalence to RCS3216J681CS, maintaining ±5% tolerance and 0.25W power rating. Both parts are Active status with ROHS3 compliance and MSL 1 rating. RC3216J681CS differs only in series designation and packaging format (Cut Tape & Digi-Reel versus standard packaging).

For Precision-Critical Applications

RC1206FR-07680RL, CR1206-FX-6800ELF, and CRCW1206680RFKEA offer ±1% tolerance improvement over the original ±5% specification while maintaining 0.25W power rating and 1206 package compatibility. All three maintain Active product status and ROHS3 compliance. Selection between these three depends on packaging requirements (Tape & Reel versus Cut Tape & Digi-Reel) and feature requirements.

For Automotive Applications

AC1206JR-07680RL, AF1206FR-07680RL, AC1206FR-07680RL, CRCW1206680RFKEA, and ERJ-8ENF6800V include Automotive AEC-Q200 certification. AC1206JR-07680RL maintains ±5% tolerance matching the original part, while AF1206FR-07680RL, AC1206FR-07680RL, CRCW1206680RFKEA provide ±1% tolerance upgrade. ERJ-8ENF6800V carries "Not For New Designs" status and should not be selected for new circuit implementations.

For Enhanced Power Dissipation

CRCW1206680RFKEAHP provides 0.75W power rating (three times the original 0.25W) with ±1% tolerance, Automotive AEC-Q200 certification, and pulse withstanding capability. This part is suitable for applications requiring higher thermal performance while maintaining 1206 package footprint and -55°C to 155°C operating range.

Frequently Asked Questions (FAQ)

Q: Can RC3216J681CS be directly replaced with RC1206FR-07680RL?

A: Yes. Both parts share identical electrical specifications (680 Ohms, ±5% tolerance, 0.25W power rating) and mechanical compatibility (1206 package, 2 terminations, -55°C to 155°C operating range). RC1206FR-07680RL offers improved ±1% tolerance as an upgrade path. Verify packaging format compatibility with your assembly process (Tape & Reel versus Cut Tape & Digi-Reel).

Q: What is the difference between ±5% and ±1% tolerance specifications?

A: Tolerance defines the maximum allowable deviation from the nominal 680 Ohm resistance value. ±5% tolerance permits resistance between 646 Ohms and 714 Ohms. ±1% tolerance restricts resistance between 673 Ohms and 687 Ohms. Applications requiring precise impedance matching, voltage divider networks, or feedback circuits benefit from ±1% tolerance parts. General-purpose applications typically function within ±5% tolerance.

Q: Are YAGEO and Bourns substitutes interchangeable with Samsung Electro-Mechanics RCS3216J681CS?

A: Yes, provided electrical and mechanical parameters match. RC1206JR-07680RL (YAGEO) and CR1206-FX-6800ELF (Bourns) both provide 680 Ohms, ±5% tolerance (or ±1% for CR1206-FX-6800ELF), 0.25W power rating, and 1206 package format. Verify supplier device package designation and packaging format (Tape & Reel, Cut Tape, or Digi-Reel) align with your procurement and assembly requirements.

Q: Can I use CRCW1206680RFKEAHP (0.75W) in place of RCS3216J681CS (0.25W)?

A: Yes. CRCW1206680RFKEAHP is a direct mechanical and electrical substitute with enhanced power rating (0.75W versus 0.25W) and improved tolerance (±1% versus ±5%). The higher power rating does not create compatibility issues; the component simply dissipates thermal energy more efficiently. This substitution is beneficial for applications operating near thermal limits or experiencing pulse conditions.

Q: What does "Not For New Designs" status mean for ERJ-8ENF6800V?

A: "Not For New Designs" indicates Panasonic has discontinued active development and marketing of this part number. While ERJ-8ENF6800V remains functionally equivalent (680 Ohms, ±1% tolerance, 0.25W, 1206 package), new circuit designs should select from Active status alternatives such as RC1206FR-07680RL, CR1206-FX-6800ELF, or CRCW1206680RFKEA to ensure long-term supply availability and manufacturer support.

Q: How do I select between Cut Tape & Digi-Reel and Tape & Reel packaging?

A: Packaging format selection depends on assembly process requirements. Tape & Reel (TR) packaging suits high-volume automated pick-and-place assembly with reel-fed component feeders. Cut Tape (CT) & Digi-Reel packaging accommodates lower-volume production, manual assembly, or mixed-component reels. Both packaging formats contain identical components; selection is driven by manufacturing process compatibility, not electrical performance.

Q: Does Automotive AEC-Q200 certification affect general-purpose circuit compatibility?

A: No. Automotive AEC-Q200 certification indicates the part meets automotive industry reliability and environmental stress testing standards. Parts with AEC-Q200 certification (AC1206JR-07680RL, AF1206FR-07680RL, AC1206FR-07680RL, CRCW1206680RFKEA, ERJ-8ENF6800V) function identically to non-certified equivalents in general-purpose applications. AEC-Q200 certification provides additional assurance of quality and reliability for mission-critical or harsh-environment applications.

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