RMC1/10-301JTP Equivalent & Substitute Parts Reference

Part Overview

The RMC1/10-301JTP is a 300 Ohm ±5% thick film chip resistor rated at 0.125W (1/8W) in 0805 (2012 Metric) surface mount package, manufactured by Kamaya Inc. This component is classified as Active product status with 908 units in current inventory. The RMC series represents a standard general-purpose resistor suitable for consumer and industrial applications requiring basic tolerance specifications. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced tolerance specifications.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	300 Ohms	Core electrical specification
Tolerance	±5%	Defines acceptable resistance range
Power Rating	0.125W (1/8W)	Maximum dissipation capability
Package / Case	0805 (2012 Metric)	Physical footprint and mounting compatibility
Composition	Thick Film	Technology type and performance characteristics
Temperature Coefficient	±200ppm/°C	Resistance stability over temperature range
Operating Temperature Range	-55°C to +155°C	Environmental operating limits
Terminations	2	Standard two-terminal configuration
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitute parts for the RMC1/10-301JTP are classified into two categories based on electrical parameter compatibility:

Direct Equivalents (Identical Specifications): Parts maintaining 300 Ohms ±5% tolerance, 0.125W power rating, 0805 package, thick film composition, and ±200ppm/°C temperature coefficient. These parts are electrically and mechanically interchangeable without circuit redesign. Direct equivalents include ERJ-6GEYJ301V (Panasonic), KTR10EZPJ301 (Rohm), MCR10ERTJ301 (Rohm), and RMCF0805JT300R (Stackpole).

Upgrade Equivalents (Enhanced Specifications): Parts that exceed the original specifications by offering tighter tolerance (±1% instead of ±5%) while maintaining identical resistance value, power rating, package, and operating temperature range. Upgrade parts feature improved temperature coefficient (±100ppm/°C versus ±200ppm/°C), providing superior stability. Upgrade equivalents include CRG0805F300R (TE Connectivity), ERJ-6ENF3000V (Panasonic), KTR10EZPF3000 (Rohm), RC0805FR-07300RL (YAGEO), RC0805JR-07300RL (YAGEO), and RC2012F301CS (Samsung).

Substitution eligibility is determined by:

Identical resistance value (300 Ohms)
Equal or tighter tolerance specification
Equal or greater power rating (0.125W minimum)
Identical or compatible package (0805/2012 Metric)
Thick film composition
Operating temperature range encompassing -55°C to +155°C
Two-terminal configuration
MSL rating of 1 or equivalent

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	AEC-Q200	Product Status	Inventory
RMC1/10-301JTP	Kamaya Inc.	300 Ω	±5%	0.125	±200	0805	—	Active	908
ERJ-6GEYJ301V	Panasonic	300 Ω	±5%	0.125	±200	0805	Yes	Active	184701
KTR10EZPJ301	Rohm Semiconductor	300 Ω	±5%	0.125	±200	0805	Yes	Active	5771
MCR10ERTJ301	Rohm Semiconductor	300 Ω	±5%	0.125	±200	0805	—	Discontinued	640
RMCF0805JT300R	Stackpole Electronics	300 Ω	±5%	0.125	±200	0805	Yes	Active	502459
CRG0805F300R	TE Connectivity	300 Ω	±1%	0.125	±100	0805	—	Active	1022
ERJ-6ENF3000V	Panasonic	300 Ω	±1%	0.125	±100	0805	Yes	Active	130967
KTR10EZPF3000	Rohm Semiconductor	300 Ω	±1%	0.125	±100	0805	Yes	Active	5914
RC0805FR-07300RL	YAGEO	300 Ω	±1%	0.125	±100	0805	—	Active	10100
RC0805JR-07300RL	YAGEO	300 Ω	±5%	0.125	±100	0805	—	Active	151314
RC2012F301CS	Samsung Electro-Mechanics	300 Ω	±1%	0.125	±100	0805	—	Active	1774

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select from RMCF0805JT300R (Stackpole), ERJ-6GEYJ301V (Panasonic), or KTR10EZPJ301 (Rohm) when maintaining the original ±5% tolerance and ±200ppm/°C temperature coefficient is required. RMCF0805JT300R offers the highest inventory availability (502,459 units) and Active product status with AEC-Q200 automotive qualification. ERJ-6GEYJ301V provides substantial inventory (184,701 units) with automotive qualification. KTR10EZPJ301 includes high-voltage capability with AEC-Q200 rating and 5,771 units available. Avoid MCR10ERTJ301 due to Discontinued status at supplier.

For Enhanced Performance (Upgrade Specifications):

Select from ERJ-6ENF3000V (Panasonic), KTR10EZPF3000 (Rohm), or RC0805FR-07300RL (YAGEO) when circuit design permits tighter tolerance (±1%) and improved temperature stability (±100ppm/°C). ERJ-6ENF3000V offers maximum inventory (130,967 units) with AEC-Q200 automotive qualification. KTR10EZPF3000 provides high-voltage capability with AEC-Q200 rating and 5,914 units in stock. RC0805FR-07300RL delivers highest availability among non-automotive options (10,100 units) with moisture-resistant thick film composition.

For Automotive Applications:

Prioritize parts with AEC-Q200 certification: ERJ-6GEYJ301V, KTR10EZPJ301, RMCF0805JT300R (direct equivalents), or ERJ-6ENF3000V, KTR10EZPF3000 (upgrade equivalents).

For General Industrial Applications:

RC0805JR-07300RL (YAGEO) provides maximum inventory (151,314 units) with ±5% tolerance, moisture-resistant composition, and Active status. RC0805FR-07300RL offers ±1% tolerance upgrade with 10,100 units available.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMC1/10-301JTP with a ±1% tolerance part?

A: Yes. Upgrade parts with ±1% tolerance (CRG0805F300R, ERJ-6ENF3000V, KTR10EZPF3000, RC0805FR-07300RL, RC2012F301CS) are electrically compatible. The tighter tolerance provides superior accuracy without circuit modification. Verify circuit design does not depend on the original ±5% tolerance specification.

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

A: Direct equivalents maintain identical specifications: 300 Ohms ±5%, ±200ppm/°C temperature coefficient. Upgrade equivalents improve performance with ±1% tolerance and ±100ppm/°C temperature coefficient, providing better resistance stability across temperature variations. Both categories maintain identical 0.125W power rating, 0805 package, and -55°C to +155°C operating range.

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

A: Most substitute parts are supplied in Tape & Reel (TR) format matching the original RMC1/10-301JTP. Exceptions include MCR10ERTJ301, RC0805FR-07300RL, RC0805JR-07300RL, and RC2012F301CS, which are available in Cut Tape (CT) or Cut Tape & Digi-Reel format. Verify packaging compatibility with assembly equipment before procurement.

Q: Which substitute part has the best inventory availability?

A: RC0805JR-07300RL (YAGEO) offers maximum inventory at 151,314 units with ±5% tolerance and moisture-resistant composition. For ±1% tolerance upgrades, ERJ-6ENF3000V (Panasonic) provides 130,967 units. For direct ±5% equivalents, RMCF0805JT300R (Stackpole) offers 502,459 units.

Q: Can I use KTR10EZPJ301 or KTR10EZPF3000 in high-voltage applications?

A: Yes. Both KTR series parts (KTR10EZPJ301 and KTR10EZPF3000) include high-voltage capability as specified in their detailed descriptions. KTR10EZPJ301 maintains ±5% tolerance with ±200ppm/°C coefficient, while KTR10EZPF3000 provides ±1% tolerance with ±100ppm/°C coefficient. Both include AEC-Q200 automotive qualification.

Q: What is the significance of AEC-Q200 certification?

A: AEC-Q200 certification indicates the component meets automotive industry reliability standards for passive components. Parts with AEC-Q200 rating (ERJ-6GEYJ301V, KTR10EZPJ301, RMCF0805JT300R, ERJ-6ENF3000V, KTR10EZPF3000) are qualified for automotive applications requiring enhanced quality assurance and failure rate documentation.

Q: Is MCR10ERTJ301 suitable for new designs?

A: No. MCR10ERTJ301 is listed as Discontinued at DiGi Electronics supplier. While 640 units remain in inventory, this part should not be selected for new designs. Use active alternatives: RMCF0805JT300R, ERJ-6GEYJ301V, or KTR10EZPJ301 for direct equivalents.

Q: What does Moisture Sensitivity Level (MSL) 1 mean?

A: MSL 1 (Unlimited) 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, ensuring compatibility with standard storage and assembly processes.

Q: Can I mix different manufacturers' parts in the same circuit board?

A: Yes. All substitute parts maintain identical electrical specifications (300 Ohms, 0.125W, 0805 package, -55°C to +155°C operating range) and are mechanically interchangeable. Mixing manufacturers is acceptable from an engineering standpoint. However, verify procurement and quality assurance procedures for consistency in documentation and traceability.

Q: What is the temperature coefficient difference between ±200ppm/°C and ±100ppm/°C?

A: Temperature coefficient defines resistance change per degree Celsius. ±200ppm/°C (original specification) allows greater resistance drift across temperature extremes compared to ±100ppm/°C (upgrade parts). For precision circuits requiring stable resistance across -55°C to +155°C range, upgrade parts with ±100ppm/°C provide superior performance.

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