RMC1/8-475JTP Equivalent & Substitute Parts

Part Overview

The RMC1/8-475JTP is a 4.7 MOhms ±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 unlimited moisture sensitivity rating (MSL 1). The part is supplied in Tape & Reel packaging format.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design specifications allow for equivalent or upgraded electrical characteristics within the same package footprint.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	4.7 MOhms	Core electrical specification
Tolerance	±5%	Accuracy class for substitution
Power Rating	0.25W (1/4W)	Thermal dissipation capability
Package / Case	1206 (3216 Metric)	Physical and mechanical compatibility
Composition	Thick Film	Technology type
Operating Temperature Range	-55°C ~ 155°C	Environmental operating limits
Temperature Coefficient	±200ppm/°C	Stability over temperature
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Handling and storage requirements
RoHS Status	ROHS3 Compliant (where applicable)	Environmental compliance

Substitute Part Grouping Explanation

Substitution logic for the RMC1/8-475JTP is based on the following criteria:

Direct Equivalents (Same Electrical Specifications): Parts that maintain identical resistance value (4.7 MOhms), tolerance (±5%), power rating (0.25W), package (1206), and operating temperature range (-55°C ~ 155°C) are classified as direct substitutes. These parts are interchangeable without circuit redesign.

Upgraded Substitutes (Enhanced Specifications): Parts that improve tolerance from ±5% to ±1% while maintaining all other core parameters (resistance, power, package, temperature range) are classified as upgrades. These provide superior accuracy and stability. Temperature coefficient may vary (±100ppm/°C vs ±200ppm/°C), representing improved thermal stability.

Key Parameters for Substitution Compatibility:

Resistance value must be exactly 4.7 MOhms
Package must be 1206 (3216 Metric)
Power rating must be 0.25W minimum
Operating temperature range must encompass -55°C ~ 155°C
Composition must be Thick Film
Tolerance of ±5% or better is acceptable

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Product Status	Packaging Type
RMC1/8-475JTP	Kamaya Inc.	4.7 MOhms	±5%	0.25	±200	1206	Active	Tape & Reel
MCR18ERTJ475	Rohm Semiconductor	4.7 MOhms	±5%	0.25	±200	1206	Discontinued at DiGi Electronics	Cut Tape & Digi-Reel
RMCF1206JT4M70	Stackpole Electronics Inc	4.7 MOhms	±5%	0.25	±200	1206	Active	Tape & Reel
CRG1206F4M7	TE Connectivity Passive Product	4.7 MOhms	±1%	0.25	±100	1206	Active	Tape & Reel
KTR18EZPF4704	Rohm Semiconductor	4.7 MOhms	±1%	0.25	±100	1206	Active	Tape & Reel
RC1206FR-074M7L	YAGEO	4.7 MOhms	±1%	0.25	±100	1206	Active	Cut Tape & Digi-Reel
RC1206JR-074M7L	YAGEO	4.7 MOhms	±5%	0.25	±100	1206	Active	Cut Tape & Digi-Reel
RMCF1206FT4M70	Stackpole Electronics Inc	4.7 MOhms	±1%	0.25	±200	1206	Active	Tape & Reel

Engineering Selection Recommendations

Direct Substitutes (Equivalent Specifications):

RMCF1206JT4M70 (Stackpole Electronics Inc) is the primary direct substitute. This part maintains identical electrical specifications (4.7 MOhms ±5%, 0.25W) and operating temperature range. It carries Active product status and includes Automotive AEC-Q200 certification, providing enhanced reliability for automotive applications. Packaging is Tape & Reel format, matching the original part.

RC1206JR-074M7L (YAGEO) is an alternative direct substitute with identical core specifications. This part features Moisture Resistant construction and Active product status. It is supplied in Cut Tape & Digi-Reel format. Temperature coefficient is ±100ppm/°C, representing improved thermal stability compared to the original ±200ppm/°C specification.

MCR18ERTJ475 (Rohm Semiconductor) matches all electrical specifications but carries Discontinued at DiGi Electronics status. This part should be used only when supply continuity is not a concern or for legacy system maintenance.

Upgraded Substitutes (Enhanced Tolerance):

KTR18EZPF4704 (Rohm Semiconductor) provides ±1% tolerance upgrade with Automotive AEC-Q200 and High Voltage certifications. Active product status with 222,407 units in stock ensures supply availability. Temperature coefficient improves to ±100ppm/°C. This part is suitable for precision applications requiring tighter tolerance control.

RMCF1206FT4M70 (Stackpole Electronics Inc) offers ±1% tolerance with Automotive AEC-Q200 certification and Active product status. Temperature coefficient remains at ±200ppm/°C. This part provides tolerance improvement while maintaining the original thermal stability characteristics.

CRG1206F4M7 (TE Connectivity Passive Product) delivers ±1% tolerance with improved temperature coefficient (±100ppm/°C). Active product status with 1,127 units in stock. This part is suitable for applications requiring enhanced accuracy.

RC1206FR-074M7L (YAGEO) provides ±1% tolerance with Moisture Resistant features and ±100ppm/°C temperature coefficient. Active product status ensures ongoing availability.

Selection Criteria by Application:

For automotive applications requiring AEC-Q200 compliance, select RMCF1206JT4M70 (direct equivalent) or KTR18EZPF4M70 (upgraded tolerance).

For general industrial applications with standard tolerance requirements, RMCF1206JT4M70 or RC1206JR-074M7L provide direct equivalence.

For precision circuits requiring tighter tolerance control, select any ±1% tolerance upgrade option based on availability and certification requirements.

Frequently Asked Questions (FAQ)

Q: Can RMCF1206JT4M70 be used as a direct replacement for RMC1/8-475JTP?

A: Yes. RMCF1206JT4M70 maintains identical resistance (4.7 MOhms), tolerance (±5%), power rating (0.25W), package (1206), and operating temperature range (-55°C ~ 155°C). Both are thick film composition with MSL 1 rating. The primary difference is Automotive AEC-Q200 certification on the Stackpole part, which provides additional reliability assurance without affecting circuit compatibility.

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

A: Direct substitutes maintain all electrical specifications of the original part, including tolerance (±5%). Upgraded substitutes improve tolerance from ±5% to ±1%, providing superior accuracy and stability. Upgraded parts also typically feature lower temperature coefficients (±100ppm/°C vs ±200ppm/°C), indicating better performance across the operating temperature range. Both categories are mechanically and electrically compatible with the original design.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed carry ROHS3 Compliant status except CRG1206F4M7, which shows Vendor Undefined REACH status. The original RMC1/8-475JTP is REACH Unaffected. For applications requiring confirmed RoHS3 compliance, verify with the specific manufacturer or supplier.

Q: Does packaging format affect substitution compatibility?

A: Packaging format (Tape & Reel vs Cut Tape & Digi-Reel) does not affect electrical or mechanical compatibility. The difference is in supply format and handling. Tape & Reel format is suitable for automated assembly lines, while Cut Tape & Digi-Reel format is appropriate for manual assembly or lower-volume applications. Select based on manufacturing process requirements, not circuit compatibility.

Q: Can I use a ±1% tolerance part in place of a ±5% tolerance part?

A: Yes. A ±1% tolerance part is a superior specification and is fully compatible with designs specified for ±5% tolerance. The tighter tolerance provides improved accuracy and stability. No circuit redesign is required. This substitution is appropriate when supply of the original ±5% part is unavailable or when design margins benefit from improved tolerance.

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

A: Automotive AEC-Q200 certification indicates the part meets automotive industry reliability and quality standards. Parts with this certification undergo additional testing and quality assurance. For non-automotive applications, AEC-Q200 certification provides enhanced reliability assurance but is not required. For automotive applications, AEC-Q200 certification is recommended or required depending on application criticality.

Q: Are there any thermal performance differences between substitute parts?

A: Temperature coefficient values vary among substitutes. The original RMC1/8-475JTP and some substitutes feature ±200ppm/°C, while upgraded options offer ±100ppm/°C. Lower temperature coefficients indicate better resistance stability across the -55°C ~ 155°C operating range. For applications with wide temperature variation or precision requirements, select parts with ±100ppm/°C coefficient.

Q: What inventory levels should I consider for supply planning?

A: Current inventory levels are: RMC1/8-475JTP (1,164 units), MCR18ERTJ475 (1,296 units), RMCF1206JT4M70 (102,615 units), CRG1206F4M7 (1,127 units), KTR18EZPF4704 (222,407 units), RC1206FR-074M7L (8,051 units), RC1206JR-074M7L (11,098 units), RMCF1206FT4M70 (38,124 units). For high-volume applications, KTR18EZPF4704 and RMCF1206JT4M70 offer superior availability.

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