RMC1/8-330JTP Equivalent & Substitute Parts

Part Overview

The RMC1/8-330JTP is a 33 Ohm ±5% 0.25W thick film chip resistor manufactured by Kamaya Inc. in 1206 (3216 Metric) package format. This component is classified as Active product status with unlimited moisture sensitivity level (MSL 1). The part is supplied in Tape & Reel packaging and is ROHS3 compliant with REACH Unaffected status.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand enhanced specifications such as improved tolerance or automotive qualification, or when supply chain optimization requires alternative sourcing from qualified manufacturers.

Key Parameters

Parameter	Value	Criticality for Substitution
Resistance Value	33 Ohms	Critical - Must Match Exactly
Tolerance	±5%	Critical - Defines Acceptable Variance
Power Rating	0.25W (1/4W)	Critical - Thermal Performance Requirement
Package / Case	1206 (3216 Metric)	Critical - PCB Layout Compatibility
Composition	Thick Film	Critical - Technology Type
Operating Temperature Range	-55°C ~ 155°C	Critical - Environmental Specification
Temperature Coefficient	±200ppm/°C (standard) or ±100ppm/°C (upgraded)	Important - Stability Consideration
Moisture Sensitivity Level	MSL 1 (Unlimited)	Important - Handling and Storage
RoHS Status	ROHS3 Compliant	Important - Regulatory Compliance

Substitute Part Grouping Explanation

Substitute parts for the RMC1/8-330JTP are categorized into two groups based on electrical specifications and product status:

Direct Substitutes (Equivalent Specifications)

Direct substitutes maintain identical electrical parameters: 33 Ohms resistance, ±5% tolerance, 0.25W power rating, 1206 package, thick film composition, and -55°C to 155°C operating temperature range. These parts are functionally interchangeable with the main part without design modification.

Upgrade Substitutes (Enhanced Specifications)

Upgrade substitutes provide improved tolerance (±1% instead of ±5%) and/or automotive AEC-Q200 qualification while maintaining the same resistance value, power rating, package, and operating temperature range. These parts offer enhanced performance characteristics and are suitable for applications requiring tighter tolerance control or automotive-grade reliability.

The substitution logic is based strictly on:

Resistance value (33 Ohms - exact match required)
Power rating (0.25W - exact match required)
Package format (1206 - exact match required)
Composition (Thick Film - exact match required)
Operating temperature range (-55°C to 155°C - exact match required)
Tolerance (±5% for direct substitutes; ±1% for upgrades)
Compliance certifications (ROHS3, REACH, AEC-Q200 where applicable)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	AEC-Q200	Product Status
RMC1/8-330JTP	Kamaya Inc.	33 Ω	±5%	0.25	1206	±200	-55 ~ 155	No	Active
ERJ-8GEYJ330V	Panasonic Electronic Components	33 Ω	±5%	0.25	1206	±200	-55 ~ 155	Yes	Not For New Designs
RMCF1206JT33R0	Stackpole Electronics Inc	33 Ω	±5%	0.25	1206	±200	-55 ~ 155	Yes	Active
CRG1206F33R	TE Connectivity Passive Product	33 Ω	±1%	0.25	1206	±200	-55 ~ 155	No	Active
ERJ-8ENF33R0V	Panasonic Electronic Components	33 Ω	±1%	0.25	1206	±100	-55 ~ 155	Yes	Not For New Designs
KTR18EZPF33R0	Rohm Semiconductor	33 Ω	±1%	0.25	1206	±100	-55 ~ 155	Yes	Active
MCR18ERTF33R0	Rohm Semiconductor	33 Ω	±1%	0.25	1206	±100	-55 ~ 155	No	Discontinued at DiGi Electronics
RC1206FR-0733RL	YAGEO	33 Ω	±1%	0.25	1206	±100	-55 ~ 155	No	Active
RC1206JR-0733RL	YAGEO	33 Ω	±5%	0.25	1206	±100	-55 ~ 155	No	Active
RMCF1206FT33R0	Stackpole Electronics Inc	33 Ω	±1%	0.25	1206	±100	-55 ~ 155	Yes	Active

Engineering Selection Recommendations

For Direct Substitution (Equivalent Performance)

RMCF1206JT33R0 (Stackpole Electronics Inc) is the primary direct substitute. This part maintains ±5% tolerance and 0.25W power rating identical to the RMC1/8-330JTP. The RMCF1206JT33R0 carries Active product status and AEC-Q200 automotive qualification, providing enhanced reliability assurance. Both parts are ROHS3 compliant with MSL 1 rating.

RC1206JR-0733RL (YAGEO) provides an alternative direct substitute with Active product status. This part includes moisture-resistant features and maintains the ±5% tolerance specification. ROHS3 compliance and MSL 1 rating are confirmed.

For Upgraded Performance (Enhanced Tolerance)

RMCF1206FT33R0 (Stackpole Electronics Inc) is recommended for applications requiring ±1% tolerance improvement. This part maintains Active product status, AEC-Q200 qualification, and identical operating temperature range. Temperature coefficient improves to ±100ppm/°C. ROHS3 compliance is confirmed.

KTR18EZPF33R0 (Rohm Semiconductor) offers ±1% tolerance with Active product status and AEC-Q200 automotive qualification. This part includes high voltage features and maintains ±100ppm/°C temperature coefficient. ROHS3 compliance is confirmed.

RC1206FR-0733RL (YAGEO) provides ±1% tolerance with moisture-resistant composition and Active product status. Temperature coefficient is ±100ppm/°C. ROHS3 compliance is confirmed.

Parts Not Recommended for New Designs

ERJ-8GEYJ330V and ERJ-8ENF33R0V (Panasonic Electronic Components) carry "Not For New Designs" product status. These parts should not be selected for new circuit designs, though they remain available for legacy system support.

MCR18ERTF33R0 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a substitute for the ±5% RMC1/8-330JTP?

A: Yes. A ±1% tolerance part is a valid upgrade substitute. The tighter tolerance specification is a performance enhancement that maintains backward compatibility. The part will function correctly in any circuit designed for ±5% tolerance.

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

A: Direct substitutes maintain identical electrical specifications (±5% tolerance, ±200ppm/°C temperature coefficient). Upgrade substitutes provide improved tolerance (±1%) and/or lower temperature coefficient (±100ppm/°C) while maintaining the same resistance value, power rating, and package format.

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

A: All listed substitute parts use 1206 (3216 Metric) package format. However, packaging type varies: most are supplied in Tape & Reel (TR), while ERJ-8ENF33R0V and MCR18ERTF33R0 are supplied in Cut Tape (CT) & Digi-Reel format. Verify packaging compatibility with your procurement and assembly requirements.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this rating have been tested and validated for automotive applications. AEC-Q200 qualification is optional for general industrial applications but required for automotive designs.

Q: Can I substitute a part with "Not For New Designs" status?

A: Parts with "Not For New Designs" status should only be used for legacy system maintenance or repair. For new circuit designs, select parts with Active product status: RMCF1206JT33R0, RC1206JR-0733RL, CRG1206F33R, KTR18EZPF33R0, RC1206FR-0733RL, or RMCF1206FT33R0.

Q: What is the significance of temperature coefficient in resistor selection?

A: Temperature coefficient indicates how much the resistance value changes with temperature. The RMC1/8-330JTP has ±200ppm/°C, meaning resistance can shift up to 0.02% per degree Celsius. Upgrade substitutes with ±100ppm/°C provide half this drift rate, beneficial for precision applications requiring stable resistance across temperature ranges.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry REACH Unaffected or REACH Unaffected status, confirming compliance with environmental and hazardous substance regulations.

Q: What is MSL 1 rating?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life with no special moisture control requirements during storage or handling. All listed parts carry MSL 1 rating, requiring no special precautions.

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