RC3216J394CS 390kΩ 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC3216J394CS is a 390 kΩ ±5% thick film chip resistor in 1206 (3216 metric) package manufactured by Samsung Electro-Mechanics. This component operates at 0.25W (1/4W) power rating with moisture-resistant construction and is rated for -55°C to 155°C operating temperature range. The part is currently active in production with 1122 pieces in stock inventory.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand higher tolerance specifications, or when automotive-grade certifications are required for specific applications. Substitute parts maintain the same resistance value, package footprint, and core electrical characteristics while offering alternative sourcing options or enhanced specifications.

Key Parameters

Parameter	Value
Resistance	390 kΩ
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
Moisture Resistance	Yes
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the RC3216J394CS is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 390 kΩ (exact match required)
Package / Case: 1206 (3216 Metric) (physical and electrical compatibility)
Composition: Thick Film (electrical performance characteristics)
Temperature Coefficient: ±100ppm/°C (thermal stability)
Operating Temperature Range: -55°C to 155°C (environmental suitability)
RoHS3 Compliance (regulatory requirement)
Moisture Sensitivity Level: 1 (handling and storage compatibility)

Allowable Variation Parameters:

Tolerance: ±5% (original) to ±1% (upgraded) – tighter tolerance is acceptable as a direct upgrade
Power Rating: 0.25W (original) to 0.75W (upgraded) – higher power rating is acceptable as an upgrade
Moisture Resistance: Present in original; may be present or absent in substitutes
Automotive AEC-Q200 Certification: Optional enhancement; not required for direct substitution

Substitute parts are grouped into two categories: Direct Equivalents (matching tolerance ±5%) and Upgrade Options (improved tolerance ±1% or enhanced power rating/certifications).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Moisture Resist.	AEC-Q200	Product Status
RC3216J394CS	Samsung Electro-Mechanics	390 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	No	Active
RC1206JR-07390KL	YAGEO	390 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	No	Active
AC1206FR-07390KL	YAGEO	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	Yes	Active
CR1206-FX-3903ELF	Bourns Inc.	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	No	Active
ERJ-8ENF3903V	Panasonic Electronic Components	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	Yes	Not For New Designs
KTR18EZPF3903	Rohm Semiconductor	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	Yes	Active
MCR18ERTF3903	Rohm Semiconductor	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	No	Discontinued at DiGi Electronics
RC1206FR-07390KL	YAGEO	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	No	Active
RMCF1206FT390K	Stackpole Electronics Inc	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	Yes	Active
CRCW1206390KFKEA	Vishay Dale	390 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	Yes	Active
CRCW1206390KFKEAHP	Vishay Dale	390 kΩ	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	No	Yes	Active

Engineering Selection Recommendations

Direct Equivalent (Same Specifications):

RC1206JR-07390KL from YAGEO is the primary direct equivalent to RC3216J394CS. Both parts share identical electrical specifications: 390 kΩ ±5% tolerance, 0.25W power rating, 1206 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both include moisture-resistant construction and are ROHS3 compliant with MSL 1 rating. YAGEO RC1206JR-07390KL maintains active product status with significantly higher inventory availability (40,461 pieces).

Upgrade Options (Enhanced Tolerance):

For applications requiring tighter tolerance specifications, the following parts provide ±1% tolerance while maintaining all other core parameters:

RC1206FR-07390KL (YAGEO): Active status, moisture-resistant, highest inventory (817,251 pieces), recommended for general upgrade applications
CR1206-FX-3903ELF (Bourns Inc.): Active status, moisture-resistant, suitable for standard industrial applications
RMCF1206FT390K (Stackpole Electronics Inc.): Active status, AEC-Q200 certified, suitable for automotive applications
CRCW1206390KFKEA (Vishay Dale): Active status, AEC-Q200 certified, suitable for automotive applications

Upgrade Options (Enhanced Power Rating):

CRCW1206390KFKEAHP from Vishay Dale provides 0.75W (3/4W) power rating with ±1% tolerance, AEC-Q200 certification, and pulse-withstanding capability. This part is suitable for applications requiring higher power dissipation while maintaining the 1206 package footprint.

Parts Not Recommended for New Designs:

ERJ-8ENF3903V (Panasonic Electronic Components) carries "Not For New Designs" status and should be avoided for new circuit development, despite meeting all electrical specifications.

Parts with Limited Availability:

MCR18ERTF3903 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can RC1206JR-07390KL directly replace RC3216J394CS without circuit modification?

A: Yes. RC1206JR-07390KL is a direct equivalent with identical resistance (390 kΩ), tolerance (±5%), power rating (0.25W), package (1206), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Both parts are ROHS3 compliant with MSL 1 rating. No circuit modification is required.

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

A: Tolerance specifies the maximum deviation from the nominal resistance value. RC3216J394CS with ±5% tolerance allows resistance between 370.5 kΩ and 409.5 kΩ. Upgrade parts with ±1% tolerance allow resistance between 386.1 kΩ and 393.9 kΩ. Tighter tolerance provides more precise circuit performance and is suitable for applications requiring accurate impedance matching or filter tuning.

Q: Can I use CRCW1206390KFKEAHP (0.75W) in place of RC3216J394CS (0.25W)?

A: Yes, from an electrical compatibility standpoint. Higher power rating provides additional thermal margin and is acceptable as a direct substitute. However, verify that the circuit board layout and thermal management design accommodate the slightly different physical dimensions (height 0.026" vs 0.024" seated height). The 0.75W rating provides enhanced pulse-withstanding capability suitable for transient-rich environments.

Q: Are AEC-Q200 certified parts required for my application?

A: AEC-Q200 certification is required only for automotive applications subject to automotive industry standards. For consumer, industrial, or general-purpose applications, AEC-Q200 certification is optional. Parts with AEC-Q200 certification (AC1206FR-07390KL, RMCF1206FT390K, CRCW1206390KFKEA, CRCW1206390KFKEAHP) undergo additional qualification testing and are suitable for automotive use.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. The part does not require baking before soldering and can be stored in standard warehouse conditions. All listed parts maintain MSL 1 rating, ensuring consistent handling procedures across substitutes.

Q: Why is RC1206FR-07390KL recommended over other ±1% options?

A: RC1206FR-07390KL from YAGEO offers the highest inventory availability (817,251 pieces), active product status, moisture-resistant construction matching the original part, and ±1% tolerance upgrade. This combination ensures supply continuity, cost efficiency, and performance enhancement without introducing new handling requirements.

Q: Can I substitute ERJ-8ENF3903V for RC3216J394CS?

A: While ERJ-8ENF3903V meets all electrical specifications (390 kΩ ±1%, 0.25W, 1206 package, -55°C to 155°C), it carries "Not For New Designs" product status. This designation indicates the manufacturer is phasing out the part. For new circuit designs, select from parts with "Active" status to ensure long-term supply availability and manufacturer support.

Q: What is the physical difference between 1206 package variants listed?

A: All parts use the 1206 (3216 metric) package with nominal dimensions 3.20mm × 1.60mm length × width. Seated height varies slightly: RC3216J394CS and RC1206JR-07390KL measure 0.026" (0.65mm), CR1206-FX-3903ELF measures 0.030" (0.75mm), and CRCW1206390KFKEA measures 0.024" (0.60mm). These variations are within standard PCB assembly tolerances and do not affect electrical performance or mechanical fit in standard 1206 footprints.

Q: Is moisture-resistant construction important for my application?

A: Moisture-resistant construction provides enhanced reliability in humid environments and extends component lifespan in applications exposed to condensation or high humidity. RC3216J394CS includes moisture-resistant construction. Direct equivalent RC1206JR-07390KL and upgrade option RC1206FR-07390KL also include this feature. If moisture resistance is critical, prioritize these parts over alternatives lacking this specification.

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