RCS3216F683CS 68kΩ 1% 1/4W 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RCS3216F683CS is a 68 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 metric) surface mount package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with anti-sulfur and moisture resistant characteristics. The part operates across -55°C to 155°C temperature range with ±100ppm/°C temperature coefficient.

Substitute parts become necessary when the primary manufacturer part is unavailable, when supply chain optimization is required, or when design flexibility across multiple qualified suppliers is needed. All substitute parts listed maintain electrical equivalence and mechanical compatibility within the specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Resistance	68	kOhms
Tolerance	±1	%
Power Rating	0.25	W (1/4W)
Package / Case	1206 (3216 Metric)	-
Composition	Thick Film	-
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Terminations	2	-
RoHS Status	ROHS3 Compliant	-
MSL Rating	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution validity for the RCS3216F683CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

Resistance value: 68 kOhms
Tolerance: ±1%
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C

Mechanical Parameters (Must Match Exactly):

Package type: 1206 (3216 metric)
Number of terminations: 2
Composition: Thick film

Compliance Parameters (Must Match or Exceed):

RoHS3 compliance
MSL rating: 1 (Unlimited)

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

Category A - Direct Electrical Equivalents (0.25W / 1/4W): AC1206FR-0768KL, CR1206-FX-6802ELF, CRCW120668K0FKEA, ERJ-8ENF6802V, RC1206FR-0768KL

Category B - Higher Power Rating (0.75W / 3/4W): CRCW120668K0FKEAHP

Category B parts provide electrical substitution with enhanced power handling capability. The 1206 package dimensions remain identical, ensuring mechanical compatibility in PCB layouts.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance (kΩ)	Tolerance (%)	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Package	RoHS	MSL	Product Status
RCS3216F683CS	Samsung Electro-Mechanics	68	±1	0.25	±100	-55 to 155	1206	ROHS3	1	Active
AC1206FR-0768KL	YAGEO	68	±1	0.25	±100	-55 to 155	1206	ROHS3	1	Active
CR1206-FX-6802ELF	Bourns Inc.	68	±1	0.25	±100	-55 to 155	1206	ROHS3	1	Active
CRCW120668K0FKEA	Vishay Dale	68	±1	0.25	±100	-55 to 155	1206	ROHS3	1	Active
CRCW120668K0FKEAHP	Vishay Dale	68	±1	0.75	±100	-55 to 155	1206	ROHS3	1	Active
ERJ-8ENF6802V	Panasonic Electronic Components	68	±1	0.25	±100	-55 to 155	1206	ROHS3	1	Not For New Designs
RC1206FR-0768KL	YAGEO	68	±1	0.25	±100	-55 to 155	1206	ROHS3	1	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Direct Equivalents):

AC1206FR-0768KL (YAGEO), CR1206-FX-6802ELF (Bourns Inc.), CRCW120668K0FKEA (Vishay Dale), and RC1206FR-0768KL (YAGEO) are all qualified direct substitutes with Active product status. These parts maintain identical electrical specifications and 1206 package compatibility. Selection among these options should be based on supplier availability, lead time, and procurement cost optimization.

Higher Power Alternative:

CRCW120668K0FKEAHP (Vishay Dale) provides 0.75W power rating while maintaining the same 68 kOhms resistance, ±1% tolerance, and 1206 package footprint. This part is suitable for applications requiring enhanced thermal margin or pulse withstanding capability without PCB layout modification.

Legacy Status Consideration:

ERJ-8ENF6802V (Panasonic Electronic Components) carries "Not For New Designs" product status. While electrically and mechanically equivalent, this part should be used only for legacy system maintenance or existing design continuity. New designs should prioritize parts with Active status.

Compliance Verification:

All listed substitutes maintain ROHS3 compliance and MSL rating 1 (Unlimited moisture sensitivity level), ensuring compatibility with standard PCB assembly processes and storage conditions.

Frequently Asked Questions (FAQ)

Q1: Can CRCW120668K0FKEAHP (0.75W) be used as a direct replacement for RCS3216F683CS (0.25W)?

A: Yes. The CRCW120668K0FKEAHP maintains identical resistance (68 kOhms), tolerance (±1%), temperature coefficient (±100ppm/°C), and 1206 package dimensions. The higher power rating (0.75W vs 0.25W) provides additional thermal capability without affecting electrical performance or PCB footprint. This substitution is valid for all applications where the original 0.25W rating was specified.

Q2: Are there dimensional differences between substitute parts in the 1206 package?

A: All parts are classified as 1206 (3216 metric) package type. Dimensional variations exist within tolerance: length ranges from 0.122" to 0.126" (3.10mm to 3.20mm), width is 0.063" (1.60mm), and height ranges from 0.024" to 0.030" (0.60mm to 0.75mm). These variations remain within standard PCB design tolerances and do not affect mechanical compatibility or solderability.

Q3: Why is ERJ-8ENF6802V marked "Not For New Designs"?

A: This designation indicates the manufacturer (Panasonic) has discontinued active development and promotion of this product line. While the part remains electrically and mechanically equivalent, new designs should specify Active status alternatives to ensure long-term supply chain stability and manufacturer support.

Q4: What is the significance of AEC-Q200 rating on some substitute parts?

A: AEC-Q200 is an automotive qualification standard. AC1206FR-0768KL, CRCW120668K0FKEA, CRCW120668K0FKEAHP, and ERJ-8ENF6802V carry this certification. The RCS3216F683CS does not list AEC-Q200 rating. Parts with AEC-Q200 certification are suitable for automotive applications; however, absence of this rating does not preclude use in non-automotive applications.

Q5: Can these parts be used interchangeably in existing PCB designs?

A: Yes, within the mechanical tolerance stack-up of the 1206 package. All substitute parts maintain the same footprint, pad spacing, and two-terminal configuration. Reflow soldering parameters remain identical. No PCB layout modification is required for substitution.

Q6: What packaging formats are available for these substitute parts?

A: Substitute parts are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® formats. AC1206FR-0768KL, CR1206-FX-6802ELF, CRCW120668K0FKEA, and CRCW120668K0FKEAHP are available in Tape & Reel. ERJ-8ENF6802V and RC1206FR-0768KL are available in Cut Tape & Digi-Reel® format. Packaging selection should align with assembly process requirements and minimum order quantities.

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