RC3216J684CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216J684CS is a 680 kOhms ±5% 0.25W thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This component is classified as Active product status with moisture-resistant construction and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and suitable for general-purpose applications requiring standard tolerance resistive elements.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand enhanced specifications such as tighter tolerance or automotive qualification, or when supply chain optimization requires alternative sourcing from qualified manufacturers.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	680 kOhms	Core electrical specification
Tolerance	±5%	Accuracy classification for substitution
Power Rating	0.25W (1/4W)	Thermal dissipation capability
Package / Case	1206 (3216 Metric)	Physical footprint and mounting compatibility
Composition	Thick Film	Technology type
Temperature Coefficient	±100ppm/°C	Temperature stability specification
Operating Temperature Range	-55°C to 155°C	Environmental operating limits
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution of the RC3216J684CS is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria (Must Match Exactly):

Resistance value: 680 kOhms
Power rating: 0.25W (1/4W)
Package format: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
RoHS3 compliance
MSL 1 rating

Tolerance Classification:

Direct Equivalents (±5% tolerance): Parts maintaining identical ±5% tolerance specification as the main part
Upgrade Substitutes (±1% tolerance): Parts with tighter tolerance specification, suitable for applications requiring enhanced accuracy without circuit redesign
Similar Parts (±5% tolerance with enhanced features): Parts matching tolerance but adding automotive AEC-Q200 qualification or other certifications

Physical Dimension Tolerance: All substitute parts maintain 1206 package format with seated height variations within 0.026" to 0.030" (0.65mm to 0.75mm), which is acceptable for standard PCB assembly processes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	Features	Product Status	RoHS3
RC3216J684CS	Samsung Electro-Mechanics	680 kΩ	±5%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	Yes
RC1206JR-07680KL	YAGEO	680 kΩ	±5%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	Yes
AC1206FR-07680KL	YAGEO	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	Active	Yes
CR1206-FX-6803ELF	Bourns Inc.	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	Yes
CRG1206F680K	TE Connectivity Passive Product	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Neohm Series	Active	Yes
ERJ-8ENF6803V	Panasonic Electronic Components	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Not For New Designs	Yes
KTR18EZPF6803	Rohm Semiconductor	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, High Voltage	Active	Yes
MCR18ERTF6803	Rohm Semiconductor	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Standard	Discontinued at DiGi Electronics	Yes
RC1206FR-07680KL	YAGEO	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active	Yes
RMCF1206FT680K	Stackpole Electronics Inc	680 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active	Yes
AC1206JR-07680KL	YAGEO	680 kΩ	±5%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	Active	Yes

Engineering Selection Recommendations

Direct Equivalent Selection (Same Tolerance ±5%):

RC1206JR-07680KL from YAGEO is the primary direct equivalent. This part maintains identical electrical specifications (680 kΩ ±5%, 0.25W) and package format. Both parts are Active status with ROHS3 compliance and MSL 1 rating. Selection of this part requires no circuit analysis or design verification beyond standard component procurement procedures.

AC1206JR-07680KL from YAGEO is a similar-tolerance alternative (±5%) that adds Automotive AEC-Q200 qualification and moisture-resistant features. This part is suitable for applications requiring automotive-grade reliability without tolerance upgrade. Product status is Active.

Upgrade Substitute Selection (Tighter Tolerance ±1%):

For applications requiring enhanced accuracy, the following ±1% tolerance parts are electrically and mechanically compatible:

AC1206FR-07680KL (YAGEO): Automotive AEC-Q200 qualified, moisture resistant, Active status. Suitable for automotive and industrial applications requiring tighter tolerance.
CR1206-FX-6803ELF (Bourns Inc.): Moisture resistant, Active status. Provides tighter tolerance without automotive qualification.
RC1206FR-07680KL (YAGEO): Moisture resistant, Active status. YAGEO RC_L series upgrade with ±1% tolerance.
RMCF1206FT680K (Stackpole Electronics Inc): Automotive AEC-Q200 qualified, Active status. Suitable for automotive applications.
KTR18EZPF6803 (Rohm Semiconductor): Automotive AEC-Q200 qualified with high voltage capability, Active status. Suitable for high-voltage automotive applications.
CRG1206F680K (TE Connectivity Passive Product): Neohm series, Active status. Provides ±1% tolerance with standard features.

Parts Not Recommended for New Designs:

ERJ-8ENF6803V (Panasonic Electronic Components) carries "Not For New Designs" product status. While electrically compatible with ±1% tolerance and Automotive AEC-Q200 qualification, 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 Parts:

MCR18ERTF6803 (Rohm Semiconductor) is discontinued at DiGi Electronics. While inventory remains available (1838 Pcs), this part should not be selected for new designs or long-term production requirements due to supply discontinuation.

Frequently Asked Questions (FAQ)

Q: Can RC1206JR-07680KL directly replace RC3216J684CS without circuit modification?

A: Yes. RC1206JR-07680KL is a direct equivalent with identical resistance (680 kΩ), tolerance (±5%), power rating (0.25W), package format (1206), and operating temperature range (-55°C to 155°C). Both parts are ROHS3 compliant with MSL 1 rating. No circuit analysis or PCB redesign is required.

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

A: Tolerance specifies the maximum deviation from the nominal resistance value. The RC3216J684CS with ±5% tolerance can vary between 646 kΩ and 714 kΩ. Upgrade parts with ±1% tolerance vary between 673.2 kΩ and 686.8 kΩ. Applications requiring precise resistive values (such as precision filters, reference circuits, or measurement circuits) benefit from ±1% tolerance. General-purpose applications typically accept ±5% tolerance.

Q: Are automotive AEC-Q200 qualified parts compatible with non-automotive applications?

A: Yes. Automotive AEC-Q200 qualification indicates enhanced reliability testing and quality standards. Parts meeting AEC-Q200 (such as AC1206FR-07680KL, RMCF1206FT680K, and KTR18EZPF6803) are fully compatible with non-automotive applications and provide superior reliability margins. These parts may be selected for industrial, medical, or consumer applications where enhanced quality assurance is beneficial.

Q: What does "Not For New Designs" product status mean?

A: "Not For New Designs" indicates the manufacturer has discontinued active development and recommends against using this part in new circuit designs. ERJ-8ENF6803V carries this status. Existing production designs currently using this part may continue, but new designs should select alternative parts with Active status such as KTR18EZPF6803 or RMCF1206FT680K.

Q: Can I use a part with different physical dimensions if the package is listed as 1206?

A: The 1206 package format specifies the nominal footprint (3.20mm x 1.60mm). Substitute parts show minor dimension variations (ranging from 3.05mm to 3.20mm length and 1.55mm to 1.60mm width) and seated height variations (0.65mm to 0.75mm). These variations are within standard PCB assembly tolerances and do not affect mechanical compatibility or electrical performance. Standard pick-and-place equipment accommodates these variations without adjustment.

Q: Which substitute part offers the best combination of availability and specifications?

A: RC1206FR-07680KL (YAGEO) offers optimal balance: Active product status, ±1% tolerance upgrade, moisture-resistant construction, 68,802 Pcs inventory, and standard Tape & Reel packaging. For automotive applications, RMCF1206FT680K (Stackpole Electronics Inc) provides AEC-Q200 qualification with 9,426 Pcs inventory and Active status.

Q: Is moisture resistance a critical specification for my application?

A: Moisture resistance is specified for parts intended for humid environments or applications with extended storage. The main part RC3216J684CS includes moisture-resistant construction. Direct equivalent RC1206JR-07680KL and upgrade parts AC1206FR-07680KL and RC1206FR-07680KL maintain this feature. Parts without explicit moisture-resistant designation (CRG1206F680K, MCR18ERTF6803) are standard thick film construction suitable for controlled environments. Selection depends on application environment specifications.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL (Moisture Sensitivity Level) 1 indicates the component requires no special moisture control during storage or handling. Parts with MSL 1 can be stored at room temperature without desiccant packaging and have unlimited shelf life under normal conditions. All listed substitute parts carry MSL 1 rating, eliminating moisture-related handling constraints.

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