RC2012J391CS 390 Ohm 0805 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC2012J391CS is a 390 Ohm ±5% 0.125W (1/8W) thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with moisture resistant characteristics and ROHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as tolerance upgrades or automotive qualification needs.

Key Parameters

Parameter	Value
Resistance	390 Ohms
Tolerance	±5%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC2012J391CS are categorized based on electrical and mechanical compatibility within the 0805 thick film resistor category. The primary substitution criteria are:

Direct Electrical Parameters:

Resistance value: 390 Ohms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C to 155°C (exact match required)
Number of Terminations: 2 (exact match required)

Tolerance Variations:

Direct substitutes maintain ±5% tolerance matching the main part
Upgrade substitutes feature ±1% tolerance, providing improved accuracy for precision applications

Compliance & Certification:

All parts maintain ROHS3 compliance and MSL 1 rating
Upgrade substitutes include AEC-Q200 automotive qualification where specified
All parts are Active product status

Packaging Format:

Cut Tape (CT) and Digi-Reel® packaging options support standard component handling
Tape & Reel (TR) packaging supports automated assembly processes

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max (mm)	AEC-Q200	Packaging Type
RC2012J391CS	Samsung Electro-Mechanics	390 Ω	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65	No	Cut Tape (CT)
RC0805JR-07390RL	YAGEO	390 Ω	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60	No	Cut Tape (CT) & Digi-Reel®
AC0805FR-07390RL	YAGEO	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60	Yes	Tape & Reel (TR)
CRG0805F390R	TE Connectivity Passive Product	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65	No	Tape & Reel (TR)
ERJ-6ENF3900V	Panasonic Electronic Components	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.70	Yes	Tape & Reel (TR)
KTR10EZPF3900	Rohm Semiconductor	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65	Yes	Tape & Reel (TR)
RC0805FR-07390RL	YAGEO	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60	No	Cut Tape (CT) & Digi-Reel®
RMCF0805FT390R	Stackpole Electronics Inc	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65	Yes	Tape & Reel (TR)
AC0805JR-07390RL	YAGEO	390 Ω	±5%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60	Yes	Tape & Reel (TR)
CRCW0805390RFKEA	Vishay Dale	390 Ω	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.50	Yes	Tape & Reel (TR)
CRCW0805390RFKEAHP	Vishay Dale	390 Ω	±1%	0.5	0805	±100ppm/°C	-55 to 155°C	0.60	Yes	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Direct Substitutes (Tolerance ±5%, No Automotive Qualification):

RC0805JR-07390RL (YAGEO) serves as a direct functional equivalent to RC2012J391CS. Both components maintain identical electrical specifications: 390 Ohms ±5% tolerance, 0.125W power rating, and -55°C to 155°C operating range. RC0805JR-07390RL is available in Cut Tape and Digi-Reel packaging formats, supporting both manual and automated assembly workflows. ROHS3 compliance and MSL 1 rating are maintained. Selection of this part is appropriate for applications where tolerance and compliance requirements match the original specification.

Upgrade Substitutes (Tolerance ±1%, Automotive AEC-Q200 Qualified):

AC0805FR-07390RL, ERJ-6ENF3900V, KTR10EZPF3900, and RMCF0805FT390R provide improved tolerance performance at ±1% with AEC-Q200 automotive qualification. These parts are suitable for applications requiring enhanced accuracy and automotive-grade reliability. All maintain the 0.125W power rating and -55°C to 155°C operating range. Selection depends on packaging preference (Tape & Reel format) and specific height constraints.

Upgrade Substitutes (Tolerance ±1%, Non-Automotive):

RC0805FR-07390RL (YAGEO) and CRG0805F390R (TE Connectivity) offer ±1% tolerance without automotive qualification. These parts support applications requiring improved accuracy in non-automotive environments. Both are available in standard packaging formats.

Similar Parts (Tolerance ±5%, Automotive AEC-Q200 Qualified):

AC0805JR-07390RL (YAGEO) maintains ±5% tolerance matching the main part while adding AEC-Q200 automotive qualification. This part is suitable for automotive applications where tolerance requirements remain at ±5%.

Higher Power Rating Alternative:

CRCW0805390RFKEAHP (Vishay Dale) provides 0.5W (1/2W) power rating in the same 0805 package with ±1% tolerance and AEC-Q200 qualification. This part is selected only when application power dissipation requirements exceed 0.125W.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-07390RL directly replace RC2012J391CS in my circuit?

A: Yes. RC0805JR-07390RL is a direct substitute. Both components share identical electrical specifications: 390 Ohms ±5% tolerance, 0.125W power rating, thick film composition, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both are packaged in 0805 (2012 Metric) format with 2 terminations. ROHS3 compliance and MSL 1 rating are equivalent. Physical dimensions are compatible with standard 0805 PCB footprints.

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

A: Tolerance specifies the maximum deviation of the actual resistance value from the nominal 390 Ohm specification. A ±5% part can vary between 370.5 and 409.5 Ohms. A ±1% part can vary between 386.1 and 393.9 Ohms. Applications requiring tighter resistance control, such as precision signal conditioning or reference circuits, benefit from ±1% tolerance parts. General-purpose applications typically accept ±5% tolerance.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive electronics qualification standard. Parts bearing this certification have undergone rigorous testing for reliability, temperature cycling, moisture resistance, and failure rate performance under automotive operating conditions. AEC-Q200 qualified parts are required for automotive applications and recommended for industrial applications demanding high reliability.

Q: Are all substitute parts available in the same packaging formats?

A: No. The main part RC2012J391CS is supplied in Cut Tape (CT) format. Direct substitute RC0805JR-07390RL is available in both Cut Tape (CT) and Digi-Reel® formats. Most upgrade substitutes are supplied in Tape & Reel (TR) format for automated assembly. Verify packaging availability with your supplier before component selection.

Q: Can I use CRCW0805390RFKEAHP (0.5W) instead of RC2012J391CS (0.125W)?

A: CRCW0805390RFKEAHP can replace RC2012J391CS from an electrical standpoint. Both maintain 390 Ohm resistance and compatible operating temperature ranges. However, CRCW0805390RFKEAHP features 0.5W power rating compared to 0.125W in the original part. This higher power rating does not create circuit incompatibility; the component will simply dissipate heat more efficiently. Use this part only when application power dissipation requirements exceed 0.125W or when higher power margin is desired.

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

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitute parts maintain MSL 1 rating, eliminating moisture-related procurement or storage constraints.

Q: How do I verify physical compatibility with my PCB footprint?

A: All listed parts use 0805 (2012 Metric) package format with identical footprint dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm). Height variations range from 0.50mm to 0.70mm maximum seated height. Standard 0805 PCB footprints accommodate all listed parts. Verify your PCB design uses standard 0805 land pattern spacing (1.60mm center-to-center).

Q: Which substitute part has the lowest profile height?

A: CRCW0805390RFKEA (Vishay Dale) has the lowest maximum seated height at 0.50mm, compared to 0.65mm for the main part. This lower profile may be beneficial in space-constrained applications. However, all parts are mechanically compatible with standard 0805 footprints.

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