RMC1/8-240JTP Equivalent & Substitute Parts

Part Overview

The RMC1/8-240JTP is a 24 Ohm ±5% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Kamaya Inc. This component is classified as Active product status with 1064 pieces currently in stock. The RMC series represents a standard general-purpose resistor suitable for broad industrial and commercial applications. Substitute parts are necessary when primary inventory becomes unavailable, when design requirements demand enhanced tolerance specifications, or when automotive-grade certifications are required for specific applications.

Key Parameters

Parameter	Value	Significance for Substitution
Resistance Value	24 Ohms	Must match exactly for direct substitution
Tolerance	±5%	Determines acceptable resistance variance; tighter tolerances are upgrades
Power Rating	0.25W (1/4W)	Must match or exceed for thermal compatibility
Package Type	1206 (3216 Metric)	Physical footprint; must match for PCB compatibility
Composition	Thick Film	Determines electrical characteristics and temperature behavior
Temperature Coefficient	±200ppm/°C (±100ppm/°C for 1% tolerance)	Affects resistance stability across operating temperature range
Operating Temperature Range	-55°C ~ 155°C	Must support application environment
Moisture Sensitivity Level	MSL 1 (Unlimited)	Indicates no moisture sensitivity restrictions
RoHS Compliance	ROHS3 Compliant	Environmental and regulatory requirement

Substitute Part Grouping Explanation

Substitute parts for the RMC1/8-240JTP are categorized into two groups based on electrical and mechanical compatibility:

Direct Substitutes (Equivalent Specifications): Parts maintaining identical resistance (24 Ohms), tolerance (±5%), power rating (0.25W), package (1206), and operating temperature range (-55°C ~ 155°C). These parts are interchangeable without circuit redesign. Direct substitutes include ERJ-8GEYJ240V, MCR18ERTJ240, and RMCF1206JT24R0.

Upgrade Substitutes (Enhanced Specifications): Parts with improved tolerance (±1% instead of ±5%) and reduced temperature coefficient (±100ppm/°C instead of ±200ppm/°C), while maintaining identical resistance value, power rating, package, and operating temperature range. These parts provide superior precision and stability. Upgrade substitutes include ERJ-8ENF24R0V, RC1206FR-0724RL, RC1206JR-0724RL, and RMCF1206FT24R0.

Key Parameters Determining Substitution:

Resistance value: 24 Ohms (exact match required)
Power rating: 0.25W minimum (equal or greater acceptable)
Package: 1206 (3216 Metric) (exact match required)
Operating temperature: -55°C ~ 155°C minimum (equal or greater range acceptable)
Composition: Thick Film (maintained across all substitutes)

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Product Status	AEC-Q200
RMC1/8-240JTP	Kamaya Inc.	24 Ω	±5%	0.25	±200	-55 ~ 155	1206	Active	No
ERJ-8GEYJ240V	Panasonic	24 Ω	±5%	0.25	±200	-55 ~ 155	1206	Not For New Designs	Yes
MCR18ERTJ240	Rohm Semiconductor	24 Ω	±5%	0.25	±200	-55 ~ 155	1206	Discontinued at DiGi Electronics	No
RMCF1206JT24R0	Stackpole Electronics	24 Ω	±5%	0.25	±200	-55 ~ 155	1206	Active	Yes
ERJ-8ENF24R0V	Panasonic	24 Ω	±1%	0.25	±100	-55 ~ 155	1206	Not For New Designs	Yes
RC1206FR-0724RL	YAGEO	24 Ω	±1%	0.25	±100	-55 ~ 155	1206	Active	No
RC1206JR-0724RL	YAGEO	24 Ω	±5%	0.25	±100	-55 ~ 155	1206	Active	No
RMCF1206FT24R0	Stackpole Electronics	24 Ω	±1%	0.25	±100	-55 ~ 155	1206	Active	Yes

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

RMCF1206JT24R0 (Stackpole Electronics) is the preferred direct substitute. This part maintains identical electrical specifications (24 Ohms ±5%, 0.25W, ±200ppm/°C) and package configuration. It carries Active product status with 8421 pieces in inventory and includes AEC-Q200 automotive certification, providing enhanced reliability assurance. ROHS3 compliance is confirmed.

RC1206JR-0724RL (YAGEO) serves as an alternative direct substitute with Active product status and 96069 pieces available. While tolerance remains ±5%, the temperature coefficient is improved to ±100ppm/°C. Moisture-resistant features are included. ROHS3 compliance is confirmed.

ERJ-8GEYJ240V (Panasonic) is functionally equivalent but carries "Not For New Designs" status, limiting its suitability for ongoing production despite AEC-Q200 certification and 73546 pieces in stock.

MCR18ERTJ240 (Rohm Semiconductor) is discontinued at DiGi Electronics and should be avoided for new applications despite 1867 pieces remaining in inventory.

For Enhanced Performance (Upgrade Substitutes):

RMCF1206FT24R0 (Stackpole Electronics) provides the highest specification upgrade with ±1% tolerance, ±100ppm/°C temperature coefficient, Active product status, AEC-Q200 certification, and 157561 pieces in inventory. This part is suitable for applications requiring superior precision and thermal stability.

RC1206FR-0724RL (YAGEO) offers ±1% tolerance and ±100ppm/°C temperature coefficient with Active product status and 97272 pieces available. Moisture-resistant features are included. ROHS3 compliance is confirmed.

ERJ-8ENF24R0V (Panasonic) provides ±1% tolerance and ±100ppm/°C temperature coefficient with AEC-Q200 certification but carries "Not For New Designs" status. High inventory (177495 pieces) is available.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with ±1% tolerance in place of the ±5% RMC1/8-240JTP?

A: Yes. Parts with ±1% tolerance (such as RMCF1206FT24R0, RC1206FR-0724RL, or ERJ-8ENF24R0V) are direct upgrades. The tighter tolerance provides superior precision while maintaining all other electrical and mechanical compatibility. No circuit redesign is required.

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

A: Direct substitutes maintain identical specifications including ±5% tolerance and ±200ppm/°C temperature coefficient. Upgrade substitutes improve tolerance to ±1% and reduce temperature coefficient to ±100ppm/°C, providing enhanced performance while preserving all other parameters including resistance value, power rating, package, and operating temperature range.

Q: Are all substitute parts compatible with the same PCB footprint?

A: All substitute parts use the 1206 (3216 Metric) package. However, physical dimensions vary slightly. The RMC1/8-240JTP measures 0.122" L × 0.063" W with 0.025" maximum seated height. Substitute parts from Panasonic (ERJ series) and Stackpole (RMCF series) measure 0.126" L × 0.063" W with 0.028" maximum seated height. Rohm (MCR18ERTJ240) measures 0.120" L × 0.061" W with 0.026" maximum seated height. These dimensional variations remain within standard 1206 package tolerances and are PCB-compatible.

Q: Which substitute part should I select for automotive applications?

A: For automotive applications, select parts with AEC-Q200 certification. RMCF1206JT24R0 and RMCF1206FT24R0 (Stackpole Electronics) are Active products with AEC-Q200 ratings. ERJ-8GEYJ240V and ERJ-8ENF24R0V (Panasonic) also carry AEC-Q200 certification but are marked "Not For New Designs."

Q: What is the inventory status of each substitute part?

A: RMCF1206FT24R0 has the highest inventory at 157561 pieces. RC1206FR-0724RL has 97272 pieces. RC1206JR-0724RL has 96069 pieces. ERJ-8ENF24R0V has 177495 pieces. ERJ-8GEYJ240V has 73546 pieces. RMCF1206JT24R0 has 8421 pieces. MCR18ERTJ240 has 1867 pieces.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The RMC1/8-240JTP does not specify RoHS status in the provided data, but all alternatives meet current RoHS3 requirements.

Q: What is the significance of "Not For New Designs" status?

A: Parts marked "Not For New Designs" (ERJ-8GEYJ240V and ERJ-8ENF24R0V from Panasonic) indicate that the manufacturer is discontinuing these products. While they remain functionally equivalent and are available in high quantities, they should not be selected for new product development. Existing designs using these parts may continue, but new designs should specify Active-status alternatives.

Q: Can I mix different substitute parts in the same production batch?

A: Yes, all substitute parts maintain identical resistance value (24 Ohms), power rating (0.25W), package (1206), and operating temperature range (-55°C ~ 155°C). However, mixing parts with different tolerances (±5% versus ±1%) or temperature coefficients (±200ppm/°C versus ±100ppm/°C) may introduce performance variations. For consistency, maintain uniform part selection within a single production batch.

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