Equivalent & Substitute Parts for RMC1/10-391JTP

Part Overview

The RMC1/10-391JTP is a 390 Ohm ±5% 1/8W thick film chip resistor in 0805 (2012 Metric) package manufactured by Kamaya Inc. This component is classified as Active status with 630 pieces currently in stock. The part is specified for general-purpose applications requiring 390 Ohm resistance with standard 5% tolerance across an operating temperature range of -55°C to 155°C. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and package compatibility to ensure direct functional replacement in circuit designs.

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	±200ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	MSL 1 (Unlimited)
RoHS Status	REACH Unaffected
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RMC1/10-391JTP are classified into two categories based on electrical parameter compatibility:

Direct Substitutes (Equivalent Specifications): Parts matching all critical electrical parameters—390 Ohms resistance, ±5% tolerance, 0.125W power rating, ±200ppm/°C temperature coefficient, and 0805 package—are considered direct substitutes. These parts maintain identical functional performance in the circuit and require no design modification.

Upgrade Substitutes (Enhanced Specifications): Parts with improved tolerance (±1% instead of ±5%) or lower temperature coefficient (±100ppm/°C instead of ±200ppm/°C) are classified as upgrades. These provide superior performance characteristics while maintaining the same 390 Ohm resistance, 0.125W power rating, and 0805 package footprint.

Critical Parameters for Substitution:

Resistance value: 390 Ohms (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Power rating: 0.125W minimum (exact match required)
Operating temperature range: -55°C to 155°C minimum (exact match required)
Composition: Thick Film (exact match required)
Moisture Sensitivity: MSL 1 or better

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Features	Product Status	Inventory
RMC1/10-391JTP	Kamaya Inc.	390 Ω	±5%	0.125	±200	0805	—	Active	630
ERJ-6GEYJ391V	Panasonic Electronic Components	390 Ω	±5%	0.125	±200	0805	Automotive AEC-Q200	Active	4904
KTR10EZPJ391	Rohm Semiconductor	390 Ω	±5%	0.125	±200	0805	Automotive AEC-Q200, High Voltage	Active	5938
MCR10ERTJ391	Rohm Semiconductor	390 Ω	±5%	0.125	±200	0805	—	Discontinued at DiGi Electronics	722
RMCF0805JT390R	Stackpole Electronics Inc	390 Ω	±5%	0.125	±200	0805	Automotive AEC-Q200	Active	430857
CRG0805F390R	TE Connectivity Passive Product	390 Ω	±1%	0.125	±100	0805	—	Active	100304
ERJ-6ENF3900V	Panasonic Electronic Components	390 Ω	±1%	0.125	±100	0805	Automotive AEC-Q200	Active	192434
KTR10EZPF3900	Rohm Semiconductor	390 Ω	±1%	0.125	±100	0805	Automotive AEC-Q200, High Voltage	Active	993
RC0805FR-07390RL	YAGEO	390 Ω	±1%	0.125	±100	0805	Moisture Resistant	Active	289550
RC0805JR-07390RL	YAGEO	390 Ω	±5%	0.125	±100	0805	Moisture Resistant	Active	264528
RC2012J391CS	Samsung Electro-Mechanics	390 Ω	±5%	0.125	±100	0805	Moisture Resistant	Active	2100

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

The following parts provide direct functional equivalence to RMC1/10-391JTP with matching electrical and mechanical specifications:

ERJ-6GEYJ391V (Panasonic): Direct substitute with Automotive AEC-Q200 qualification. Suitable for automotive and industrial applications requiring enhanced reliability standards.
KTR10EZPJ391 (Rohm Semiconductor): Direct substitute with Automotive AEC-Q200 qualification and High Voltage features. Appropriate for automotive and high-voltage circuit applications.
RMCF0805JT390R (Stackpole Electronics Inc): Direct substitute with Automotive AEC-Q200 qualification and highest inventory availability (430,857 pieces). Recommended for high-volume production requirements.
RC0805JR-07390RL (YAGEO): Direct substitute with Moisture Resistant features and high inventory (264,528 pieces). Suitable for applications in humid environments.
RC2012J391CS (Samsung Electro-Mechanics): Direct substitute with Moisture Resistant features. Appropriate for moisture-sensitive applications.

Upgrade Substitutes (Enhanced Performance):

The following parts offer improved specifications while maintaining 390 Ohm resistance and 0805 package compatibility:

CRG0805F390R (TE Connectivity): Upgrade with ±1% tolerance and ±100ppm/°C temperature coefficient. Suitable for precision applications requiring tighter resistance tolerance.
ERJ-6ENF3900V (Panasonic): Upgrade with ±1% tolerance, ±100ppm/°C temperature coefficient, and Automotive AEC-Q200 qualification. Recommended for automotive precision applications.
KTR10EZPF3900 (Rohm Semiconductor): Upgrade with ±1% tolerance, ±100ppm/°C temperature coefficient, Automotive AEC-Q200 qualification, and High Voltage features. Suitable for high-precision automotive and high-voltage applications.
RC0805FR-07390RL (YAGEO): Upgrade with ±1% tolerance, ±100ppm/°C temperature coefficient, Moisture Resistant features, and highest inventory for 1% tolerance parts (289,550 pieces). Recommended for precision applications in humid environments.

Discontinued Parts:

MCR10ERTJ391 (Rohm Semiconductor): Marked as Discontinued at DiGi Electronics. Avoid for new designs; use active alternatives instead.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance resistor as a substitute for the ±5% RMC1/10-391JTP?

A: Yes. The ±1% tolerance parts (CRG0805F390R, ERJ-6ENF3900V, KTR10EZPF3900, RC0805FR-07390RL) are functional upgrades. They provide tighter resistance tolerance and lower temperature coefficient while maintaining the same 390 Ohm nominal value and 0805 package. These are direct substitutes with enhanced performance characteristics.

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

A: Direct substitutes match all electrical specifications of the RMC1/10-391JTP, including ±5% tolerance and ±200ppm/°C temperature coefficient. Upgrade substitutes improve upon these specifications with ±1% tolerance and ±100ppm/°C temperature coefficient, providing superior performance in precision applications.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 Compliant and REACH Unaffected, matching the environmental compliance status of the RMC1/10-391JTP.

Q: Which substitute offers the best inventory availability?

A: RMCF0805JT390R (Stackpole Electronics Inc) offers the highest inventory with 430,857 pieces in stock, making it the optimal choice for high-volume production requirements.

Q: Can I use parts with Automotive AEC-Q200 qualification in non-automotive applications?

A: Yes. Automotive AEC-Q200 qualified parts (ERJ-6GEYJ391V, KTR10EZPJ391, RMCF0805JT390R, ERJ-6ENF3900V, KTR10EZPF3900) meet stringent reliability and quality standards that exceed general-purpose requirements. They are suitable for any application requiring enhanced reliability.

Q: What is the significance of Moisture Resistant features?

A: Moisture Resistant parts (RC0805FR-07390RL, RC0805JR-07390RL, RC2012J391CS) provide enhanced protection against moisture ingress and are recommended for applications in high-humidity environments or where extended shelf life is required.

Q: Are there any height differences between substitute parts?

A: Yes. Most parts have a maximum seated height of 0.026" (0.65mm), while ERJ-6GEYJ391V and ERJ-6ENF3900V have 0.028" (0.70mm). RC0805FR-07390RL and RC0805JR-07390RL have 0.024" (0.60mm). These minor variations are within standard PCB assembly tolerances and do not affect functional compatibility.

Q: Which substitute should I choose for automotive applications?

A: For automotive applications, select parts with Automotive AEC-Q200 qualification: ERJ-6GEYJ391V, KTR10EZPJ391, RMCF0805JT390R, ERJ-6ENF3900V, or KTR10EZPF3900. These meet automotive industry reliability standards.

Q: Can I substitute MCR10ERTJ391 in new designs?

A: No. MCR10ERTJ391 is marked as Discontinued at DiGi Electronics. For new designs, use active alternatives such as RMCF0805JT390R, ERJ-6GEYJ391V, or KTR10EZPJ391.

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