RC3216J393CS 39kΩ 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC3216J393CS is a 39 kΩ ±5% 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 moisture-resistant construction and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating), mechanical compatibility (package size, termination count), and environmental ratings. Substitute parts with improved tolerance (±1%) or enhanced automotive qualification (AEC-Q200) are available from multiple manufacturers.

Key Parameters

Parameter	Value	Specification Basis
Resistance	39 kΩ	Core electrical specification
Tolerance	±5%	Accuracy classification for direct equivalents
Power Rating	0.25W (1/4W)	Thermal dissipation capability
Package / Case	1206 (3216 Metric)	Physical form factor and PCB footprint
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Stability over operating range
Operating Temperature	-55°C to +155°C	Environmental operating limits
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling and storage requirements
RoHS Status	ROHS3 Compliant	Environmental compliance
Number of Terminations	2	Connection points

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on substitution criteria:

Direct Equivalents (±5% Tolerance): Parts maintaining the original ±5% tolerance specification. These provide identical electrical performance and are pin-for-pin compatible with the RC3216J393CS.

Upgrade Substitutes (±1% Tolerance): Parts with improved tolerance specification (±1% vs. ±5%). These offer enhanced accuracy and are electrically compatible. Upgrade substitutes may include additional certifications such as Automotive AEC-Q200 qualification or high-voltage features. Upgrade substitutes are mechanically and electrically interchangeable with the original part in applications where improved tolerance is acceptable or beneficial.

Substitution Criteria (Mandatory Matching Parameters):

Resistance value: 39 kΩ (exact match required)
Power rating: 0.25W minimum
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to +155°C minimum
Termination count: 2
RoHS compliance: ROHS3 or equivalent

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status
RC3216J393CS	Samsung Electro-Mechanics	39 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active
RC1206JR-0739KL	YAGEO	39 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active
AC1206FR-0739KL	YAGEO	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200, Moisture Resistant	Active
CR1206-FX-3902ELF	Bourns Inc.	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active
CRG1206F39K	TE Connectivity Passive Product	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Neohm Series	Active
ERJ-8ENF3902V	Panasonic Electronic Components	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200	Not For New Designs
KTR18EZPF3902	Rohm Semiconductor	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200, High Voltage	Active
MCR18ERTF3902	Rohm Semiconductor	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Standard	Discontinued at DiGi Electronics
RC1206FR-0739KL	YAGEO	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active
RMCF1206FT39K0	Stackpole Electronics Inc	39 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200	Active
AC1206JR-0739KL	YAGEO	39 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200, Moisture Resistant	Active

Engineering Selection Recommendations

For Direct Equivalent Selection (±5% Tolerance Maintained):

RC1206JR-0739KL (YAGEO) is the primary direct equivalent. It maintains the ±5% tolerance specification, identical power rating, and package configuration. Both parts feature moisture-resistant thick film construction and unlimited moisture sensitivity level (MSL 1). YAGEO RC1206JR-0739KL is Active product status with ROHS3 compliance and REACH unaffected designation, matching the environmental compliance profile of the original Samsung part.

AC1206JR-0739KL (YAGEO) is a similar-category alternative maintaining ±5% tolerance with added Automotive AEC-Q200 qualification. This part is suitable for applications requiring automotive-grade reliability while preserving the original tolerance specification.

For Upgrade Substitute Selection (±1% Tolerance Improvement):

RC1206FR-0739KL (YAGEO) provides ±1% tolerance upgrade with moisture-resistant features and Active product status. This represents a direct tolerance improvement without additional automotive qualification.

AC1206FR-0739KL (YAGEO) combines ±1% tolerance with Automotive AEC-Q200 qualification. Suitable for automotive and high-reliability applications requiring improved accuracy.

CR1206-FX-3902ELF (Bourns Inc.) offers ±1% tolerance with moisture-resistant construction and Active status. Bourns CR1206 series provides established reliability in industrial applications.

RMCF1206FT39K0 (Stackpole Electronics Inc) delivers ±1% tolerance with Automotive AEC-Q200 qualification and Active product status. Stackpole RMCF series is widely used in automotive and industrial markets.

KTR18EZPF3902 (Rohm Semiconductor) provides ±1% tolerance with Automotive AEC-Q200 qualification and high-voltage features. Active product status with established automotive qualification.

CRG1206F39K (TE Connectivity Passive Product) offers ±1% tolerance as part of the Neohm series with Active product status. Suitable for general industrial applications requiring improved tolerance.

Parts to Avoid for New Designs:

ERJ-8ENF3902V (Panasonic Electronic Components) carries "Not For New Designs" product status despite meeting all electrical and mechanical specifications. MCR18ERTF3902 (Rohm Semiconductor) is discontinued at DiGi Electronics, limiting long-term supply availability.

Frequently Asked Questions (FAQ)

Q: Can RC1206JR-0739KL directly replace RC3216J393CS without circuit redesign?

A: Yes. RC1206JR-0739KL is a direct equivalent maintaining identical electrical specifications (39 kΩ ±5%, 0.25W), package (1206), and environmental ratings. No circuit redesign is required. Both parts are mechanically and electrically interchangeable.

Q: What is the difference between direct equivalents and upgrade substitutes?

A: Direct equivalents (RC1206JR-0739KL) maintain the original ±5% tolerance. Upgrade substitutes (RC1206FR-0739KL, AC1206FR-0739KL, RMCF1206FT39K0, KTR18EZPF3902) improve tolerance to ±1%. Upgrade substitutes are electrically compatible and can be used in place of the original part. The improved tolerance may benefit circuits requiring tighter resistance accuracy.

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

A: Yes. Automotive AEC-Q200 qualified parts (AC1206FR-0739KL, RMCF1206FT39K0, KTR18EZPF3902) meet or exceed industrial reliability standards. These parts are fully compatible with non-automotive applications and provide enhanced reliability margins.

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

A: "Not For New Designs" indicates the manufacturer is not recommending the part for new circuit designs, typically due to planned discontinuation or replacement by newer alternatives. ERJ-8ENF3902V carries this status. For new designs, select from Active status parts such as RC1206FR-0739KL, AC1206FR-0739KL, or RMCF1206FT39K0.

Q: Can I use a ±1% tolerance part where ±5% was originally specified?

A: Yes. A ±1% tolerance part is a functional upgrade and is fully compatible. The tighter tolerance provides improved circuit accuracy. No circuit modifications are required. This substitution is valid for all applications.

Q: Are there package size differences between substitute parts?

A: All listed substitutes use the 1206 (3216 Metric) package. Physical dimensions vary slightly between manufacturers (length ranges 0.120" to 0.126", height ranges 0.026" to 0.030"), but all parts fit standard 1206 PCB footprints. Verify specific PCB layout constraints if space is critical.

Q: What is the significance of "Moisture Resistant" feature?

A: Moisture-resistant construction (featured in RC3216J393CS, RC1206JR-0739KL, RC1206FR-0739KL, AC1206FR-0739KL, CR1206-FX-3902ELF, KTR18EZPF3902) provides enhanced protection against humidity and moisture ingress. This feature is beneficial for applications in humid environments or with extended storage periods. All listed substitutes maintain MSL 1 (Unlimited) moisture sensitivity level.

Q: Which substitute offers the best long-term availability?

A: RC1206FR-0739KL (YAGEO), AC1206FR-0739KL (YAGEO), CR1206-FX-3902ELF (Bourns), and RMCF1206FT39K0 (Stackpole) all carry Active product status with high inventory levels (60,292, 10,928, 60,463, and 13,147 units respectively). These parts represent established product lines with strong manufacturer commitment and supply continuity.

Q: Is high-voltage capability relevant for standard applications?

A: KTR18EZPF3902 includes high-voltage features beyond the standard 0.25W rating. For standard applications operating within -55°C to +155°C and 0.25W power dissipation, this feature provides additional design margin but is not required. Standard substitutes (RC1206FR-0739KL, CR1206-FX-3902ELF) are fully adequate for typical applications.

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