RMC1/8-3R3JTP Equivalent & Substitute Parts Reference

Part Overview

The RMC1/8-3R3JTP is a 3.3 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 971 pieces currently in stock. The RMC series represents a standard general-purpose resistor line suitable for general electronics applications. Substitute parts are identified when original stock becomes unavailable, when alternative certifications are required for specific applications, or when design requirements necessitate enhanced tolerance or automotive-grade specifications.

Key Parameters

Parameter	Value
Resistance	3.3 Ohms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Operating Temperature Range	-55°C ~ 155°C
Temperature Coefficient	-200 / +500ppm/°C
Moisture Sensitivity Level	1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for RMC1/8-3R3JTP are grouped based on strict electrical and mechanical compatibility criteria. All substitute candidates maintain the following core parameters:

Mandatory Matching Parameters:

Resistance value: 3.3 Ohms
Power rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Composition: Thick Film
Operating temperature range: -55°C ~ 155°C
Moisture Sensitivity Level: 1 (Unlimited)
Number of terminations: 2

Tolerance Variations: Substitutes are available in two tolerance grades: ±5% (direct equivalents) and ±1% (upgraded tolerance). The ±5% tolerance group provides direct functional equivalence. The ±1% tolerance group offers enhanced precision for applications requiring tighter tolerance specifications.

Certification Enhancements: Some substitutes include automotive AEC-Q200 certification or moisture-resistant features, which represent functional enhancements without compromising base electrical specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Certifications	Inventory (Pcs)
RMC1/8-3R3JTP	Kamaya Inc.	3.3 Ω	±5%	0.25	-200 / +500	-55 ~ 155	1206	None Listed	971
ERJ-8RQF3R3V	Panasonic Electronic Components	3.3 Ω	±1%	0.25	±200	-55 ~ 155	1206	AEC-Q200	28279
ERJ-8RQJ3R3V	Panasonic Electronic Components	3.3 Ω	±5%	0.25	±200	-55 ~ 155	1206	AEC-Q200	3202
RC1206FR-073R3L	YAGEO	3.3 Ω	±1%	0.25	±200	-55 ~ 155	1206	ROHS3 Compliant	353911
RC1206JR-073R3L	YAGEO	3.3 Ω	±5%	0.25	±200	-55 ~ 155	1206	ROHS3 Compliant	48146
RMCF1206FT3R30	Stackpole Electronics Inc	3.3 Ω	±1%	0.25	±200	-55 ~ 155	1206	AEC-Q200	352189
RMCF1206JT3R30	Stackpole Electronics Inc	3.3 Ω	±5%	0.25	±200	-55 ~ 155	1206	AEC-Q200	590760

Engineering Selection Recommendations

Direct Equivalents (±5% Tolerance):

ERJ-8RQJ3R3V and RC1206JR-073R3L provide direct functional equivalence to RMC1/8-3R3JTP with identical tolerance specifications. Both parts maintain the same electrical performance envelope. ERJ-8RQJ3R3V includes AEC-Q200 automotive certification. RC1206JR-073R3L includes ROHS3 compliance and moisture-resistant features. Selection between these options depends on application requirements for automotive qualification or regulatory compliance.

Enhanced Tolerance Alternatives (±1% Tolerance):

ERJ-8RQF3R3V, RC1206FR-073R3L, and RMCF1206FT3R30 offer ±1% tolerance, representing improved precision over the original ±5% specification. These parts are suitable for applications requiring tighter resistance tolerances. All three maintain identical power rating, package, and operating temperature range. ERJ-8RQF3R3V and RMCF1206FT3R30 include AEC-Q200 automotive certification. RC1206FR-073R3L includes ROHS3 compliance and moisture-resistant features.

Automotive Applications:

For automotive applications requiring AEC-Q200 certification, select from: ERJ-8RQF3R3V (±1%), ERJ-8RQJ3R3V (±5%), RMCF1206FT3R30 (±1%), or RMCF1206JT3R30 (±5%).

Regulatory Compliance:

All substitute parts maintain REACH Unaffected status and ECCN EAR99 classification consistent with the original part. YAGEO parts (RC1206FR-073R3L and RC1206JR-073R3L) explicitly list ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can ERJ-8RQF3R3V replace RMC1/8-3R3JTP directly?

A: ERJ-8RQF3R3V is electrically compatible with RMC1/8-3R3JTP. Both parts share identical resistance value (3.3 Ohms), power rating (0.25W), package (1206), and operating temperature range (-55°C ~ 155°C). The primary difference is tolerance specification: ERJ-8RQF3R3V offers ±1% tolerance compared to RMC1/8-3R3JTP's ±5% tolerance. This represents an enhancement in precision. ERJ-8RQF3R3V also includes AEC-Q200 automotive certification, which the original part does not list.

Q: What is the difference between ±5% and ±1% tolerance substitutes?

A: Tolerance defines the acceptable deviation from the nominal resistance value. RMC1/8-3R3JTP with ±5% tolerance allows actual resistance values between 3.135 Ohms and 3.465 Ohms. Substitutes with ±1% tolerance (ERJ-8RQF3R3V, RC1206FR-073R3L, RMCF1206FT3R30) allow actual values between 3.267 Ohms and 3.333 Ohms. The ±1% tolerance group provides tighter control over resistance values, suitable for precision circuit applications. Both tolerance grades are mechanically and electrically compatible within the same package.

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

A: Substitute parts are available in two packaging formats: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel. RMC1/8-3R3JTP is supplied in Tape & Reel format. RC1206FR-073R3L is supplied in Cut Tape & Digi-Reel format. All other substitutes are supplied in Tape & Reel format. Packaging format does not affect electrical or mechanical compatibility; it relates only to order quantity and handling logistics.

Q: Which substitute part has the highest inventory availability?

A: RC1206FR-073R3L (YAGEO) has the highest inventory with 353,911 pieces in stock. RMCF1206JT3R30 (Stackpole Electronics Inc) has 590,760 pieces available. Both represent substantial inventory levels for high-volume applications.

Q: Do all substitute parts meet automotive standards?

A: Not all substitutes include automotive certification. ERJ-8RQF3R3V, ERJ-8RQJ3R3V, RMCF1206FT3R30, and RMCF1206JT3R30 include AEC-Q200 automotive certification. RC1206FR-073R3L and RC1206JR-073R3L do not list automotive certification but include ROHS3 compliance. Selection depends on whether AEC-Q200 qualification is required for the application.

Q: What is the temperature coefficient difference between the original part and substitutes?

A: RMC1/8-3R3JTP specifies temperature coefficient of -200 / +500ppm/°C, indicating asymmetrical temperature behavior. All substitute parts specify ±200ppm/°C, representing symmetrical temperature coefficient. This difference affects resistance stability across the operating temperature range. The substitute parts offer more predictable temperature behavior.

Q: Can I use RMCF1206JT3R30 as a direct replacement for RMC1/8-3R3JTP?

A: RMCF1206JT3R30 is mechanically and electrically compatible with RMC1/8-3R3JTP. Both parts share 3.3 Ohms resistance, ±5% tolerance, 0.25W power rating, 1206 package, and -55°C ~ 155°C operating temperature range. RMCF1206JT3R30 includes AEC-Q200 automotive certification and ROHS3 compliance, which represent enhancements. The primary difference is temperature coefficient specification: RMCF1206JT3R30 specifies ±200ppm/°C versus RMC1/8-3R3JTP's -200 / +500ppm/°C.

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