RMC1/8-303JTP Equivalent & Substitute Parts Reference

Part Overview

The RMC1/8-303JTP is a 30 kOhms ±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 891 pieces currently in stock. The RMC series represents a standard general-purpose resistor suitable for general circuit applications requiring moderate tolerance specifications.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for equivalent electrical and mechanical parameters. This reference provides direct substitutes maintaining identical electrical characteristics and compatible mechanical dimensions, as well as upgrade options with improved tolerance specifications.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	30 kOhms	Core electrical specification
Tolerance	±5%	Accuracy classification for direct substitutes
Power Rating	0.25W (1/4W)	Thermal dissipation capability
Package / Case	1206 (3216 Metric)	Physical form factor and PCB footprint
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±200ppm/°C	Stability over operating range
Operating Temperature Range	-55°C ~ 155°C	Environmental operating limits
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitute parts for the RMC1/8-303JTP are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Equivalent Specifications)

Direct substitutes maintain identical electrical parameters: 30 kOhms resistance, ±5% tolerance, 0.25W power rating, and ±200ppm/°C temperature coefficient. These parts are mechanically compatible within the 1206 package family, with minor dimensional variations within standard tolerances. Direct substitutes include:

ERJ-8GEYJ303V (Panasonic Electronic Components)
MCR18ERTJ303 (Rohm Semiconductor)
RMCF1206JG30K0 (Stackpole Electronics Inc)
RMCF1206JT30K0 (Stackpole Electronics Inc)
RC1206JR-0730KL (YAGEO)

Upgrade Substitutes (Improved Tolerance)

Upgrade substitutes provide superior tolerance specifications (±1% instead of ±5%) while maintaining the same 30 kOhms resistance, 0.25W power rating, and 1206 package. These parts feature ±100ppm/°C temperature coefficient, representing improved stability. Upgrade substitutes include:

CRG1206F30K (TE Connectivity Passive Product)
ERJ-8ENF3002V (Panasonic Electronic Components)
KTR18EZPF3002 (Rohm Semiconductor)
RC1206FR-0730KL (YAGEO)
RMCF1206FT30K0 (Stackpole Electronics Inc)

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and operating temperature range of -55°C ~ 155°C, ensuring functional equivalence within the specified application envelope.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Product Status	Packaging Type
RMC1/8-303JTP	Kamaya Inc.	30 kOhms	±5%	0.25	±200	1206	Active	Tape & Reel
ERJ-8GEYJ303V	Panasonic	30 kOhms	±5%	0.25	±200	1206	Not For New Designs	Tape & Reel
MCR18ERTJ303	Rohm Semiconductor	30 kOhms	±5%	0.25	±200	1206	Discontinued	Cut Tape
RMCF1206JG30K0	Stackpole Electronics	30 kOhms	±5%	0.25	±200	1206	Active	Cut Tape
RMCF1206JT30K0	Stackpole Electronics	30 kOhms	±5%	0.25	±200	1206	Active	Tape & Reel
RC1206JR-0730KL	YAGEO	30 kOhms	±5%	0.25	±100	1206	Active	Cut Tape
CRG1206F30K	TE Connectivity	30 kOhms	±1%	0.25	±100	1206	Active	Tape & Reel
ERJ-8ENF3002V	Panasonic	30 kOhms	±1%	0.25	±100	1206	Not For New Designs	Tape & Reel
KTR18EZPF3002	Rohm Semiconductor	30 kOhms	±1%	0.25	±100	1206	Active	Tape & Reel
RC1206FR-0730KL	YAGEO	30 kOhms	±1%	0.25	±100	1206	Active	Tape & Reel
RMCF1206FT30K0	Stackpole Electronics	30 kOhms	±1%	0.25	±100	1206	Active	Tape & Reel

Engineering Selection Recommendations

For Direct Substitution (Equivalent ±5% Tolerance)

When component availability requires direct substitution with identical electrical specifications, the following parts are recommended based on product status and compliance:

RMCF1206JT30K0 (Stackpole Electronics Inc) is the primary recommendation. This part maintains Active product status, ROHS3 compliance, and Tape & Reel packaging matching the original RMC1/8-303JTP format. Stackpole Electronics provides consistent supply and automotive AEC-Q200 qualification.

RMCF1206JG30K0 (Stackpole Electronics Inc) serves as an alternative with identical electrical specifications and Active status, available in Cut Tape packaging for applications where reel format is not required.

RC1206JR-0730KL (YAGEO) provides an additional option with Active product status and extensive inventory availability (203,418 pieces). This part features moisture-resistant thick film composition and is available in Cut Tape & Digi-Reel packaging.

Parts with discontinued or "Not For New Designs" status (MCR18ERTJ303, ERJ-8GEYJ303V) should be avoided for new circuit designs, though existing inventory may be used for legacy system maintenance.

For Upgrade Substitution (Superior ±1% Tolerance)

When circuit design specifications permit improved tolerance performance, upgrade substitutes provide enhanced accuracy:

RC1206FR-0730KL (YAGEO) is recommended as the primary upgrade option. This part features ±1% tolerance, Active product status, ROHS3 compliance, moisture-resistant composition, and the highest inventory availability (276,720 pieces). Tape & Reel packaging ensures compatibility with automated assembly processes.

KTR18EZPF3002 (Rohm Semiconductor) offers upgrade performance with automotive AEC-Q200 qualification and high voltage capability. Active product status and Tape & Reel packaging support production requirements.

RMCF1206FT30K0 (Stackpole Electronics Inc) provides automotive-grade upgrade performance with AEC-Q200 rating, Active status, and substantial inventory (44,382 pieces).

CRG1206F30K (TE Connectivity Passive Product) and ERJ-8ENF3002V (Panasonic) offer upgrade specifications with Active and "Not For New Designs" status respectively, suitable for applications where tolerance improvement is required.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance resistor as a substitute for the ±5% RMC1/8-303JTP?

A: Yes. The ±1% tolerance upgrade substitutes (RC1206FR-0730KL, KTR18EZPF3002, RMCF1206FT30K0, CRG1206F30K, ERJ-8ENF3002V) are electrically compatible. These parts maintain the same 30 kOhms resistance value and 0.25W power rating. The improved tolerance provides superior accuracy without affecting circuit functionality. Mechanical compatibility is maintained within the 1206 package family.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape & Digi-Reel packaging provides components on cut tape segments or alternative reel formats for lower-volume applications or manual assembly. Both formats contain identical components; packaging selection depends on assembly process requirements and order quantities.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance status, matching the environmental compliance of the original RMC1/8-303JTP. This ensures regulatory equivalence for applications subject to ROHS3 requirements.

Q: What does "Not For New Designs" product status mean?

A: "Not For New Designs" indicates that the manufacturer has discontinued active development and recommends against using this part in new circuit designs. Existing inventory may be available for legacy system maintenance or repair. For new designs, select parts with Active product status such as RMCF1206JT30K0, RC1206JR-0730KL, or RC1206FR-0730KL.

Q: Can I substitute a part with automotive AEC-Q200 rating in a non-automotive application?

A: Yes. Automotive-qualified parts (ERJ-8GEYJ303V, RMCF1206JG30K0, RMCF1206JT30K0, KTR18EZPF3002, RMCF1206FT30K0) meet or exceed general industrial specifications. These parts are suitable for non-automotive applications and provide additional reliability margin through automotive qualification testing.

Q: What is the significance of temperature coefficient (ppm/°C)?

A: Temperature coefficient indicates resistance value change per degree Celsius across the operating temperature range. The RMC1/8-303JTP specifies ±200ppm/°C, meaning resistance varies up to 0.02% per °C. Direct substitutes maintain this specification. Upgrade substitutes feature ±100ppm/°C, providing superior stability with half the temperature-induced variation. Selection depends on circuit sensitivity to resistance drift over the -55°C ~ 155°C operating range.

Q: Are dimensional variations between substitute parts significant?

A: All substitute parts conform to the 1206 (3216 Metric) package standard with minor dimensional variations within manufacturing tolerances. Maximum seated height ranges from 0.025" to 0.028" (0.65mm to 0.70mm), and length/width dimensions vary within ±0.006" (±0.15mm). These variations are within standard PCB design tolerances and do not affect mechanical compatibility or assembly processes.

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

A: RC1206FR-0730KL offers the highest inventory availability at 276,720 pieces, suitable for large-volume production. RMCF1206FT30K0 provides 44,382 pieces for medium-volume requirements. RMCF1206JT30K0 and CRG1206F30K offer 794 and 896 pieces respectively for lower-volume applications. Inventory levels are subject to change; verify current availability with suppliers for production scheduling.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message