RMCF1206FT412R Equivalent & Substitute Parts

Part Overview

The RMCF1206FT412R is a 412 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This automotive-grade component meets AEC-Q200 qualification standards and is designed for high-reliability applications requiring stable resistance performance across extended temperature ranges. Substitute parts are necessary to address supply chain availability, manufacturing discontinuation, or specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	412 Ohms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RMCF1206FT412R is determined by strict equivalence across the following critical parameters:

Resistance value: 412 Ohms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package designation: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Termination count: 2
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical specifications. Variations in physical dimensions (length, width, height) within standard 1206 package tolerances do not affect functional substitutability. Product status and feature certifications (such as automotive AEC-Q200 qualification) are secondary considerations that may influence selection based on application requirements but do not prevent substitution at the component level.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Composition	Temp Coeff (ppm/°C)	Operating Temp (°C)	RoHS Status	MSL	Product Status
RMCF1206FT412R	Stackpole Electronics Inc	412 Ω	±1%	0.25	1206	Thick Film	±100	-55 ~ 155	ROHS3 Compliant	1	Active
CR1206-FX-4120ELF	Bourns Inc.	412 Ω	±1%	0.25	1206	Thick Film	±100	-55 ~ 155	ROHS3 Compliant	1	Active
CRCW1206412RFKEA	Vishay Dale	412 Ω	±1%	0.25	1206	Thick Film	±100	-55 ~ 155	ROHS3 Compliant	1	Active
ERJ-8ENF4120V	Panasonic Electronic Components	412 Ω	±1%	0.25	1206	Thick Film	±100	-55 ~ 155	ROHS3 Compliant	1	Not For New Designs
MCR18ERTF4120	Rohm Semiconductor	412 Ω	±1%	0.25	1206	Thick Film	±100	-55 ~ 155	ROHS3 Compliant	1	Discontinued at DiGi Electronics
RC1206FR-07412RL	YAGEO	412 Ω	±1%	0.25	1206	Thick Film	±100	-55 ~ 155	ROHS3 Compliant	1	Active

Engineering Selection Recommendations

For new designs and active production, CR1206-FX-4120ELF (Bourns), CRCW1206412RFKEA (Vishay Dale), and RC1206FR-07412RL (YAGEO) are preferred selections due to active product status and confirmed availability. CRCW1206412RFKEA carries automotive AEC-Q200 qualification matching the original RMCF1206FT412R specification.

ERJ-8ENF4120V (Panasonic) is marked "Not For New Designs" and should be used only for legacy system maintenance or repair applications where original part sourcing is unavailable. MCR18ERTF4120 (Rohm Semiconductor) is discontinued at DiGi Electronics and represents a legacy option with limited availability.

All substitute parts maintain identical electrical performance, temperature stability, and environmental compliance (ROHS3, MSL 1) required for direct circuit-level replacement.

Frequently Asked Questions (FAQ)

Q: Can I substitute any of these parts directly into a circuit designed for RMCF1206FT412R?

A: Yes. All listed substitute parts are electrically and mechanically equivalent. They share identical resistance value (412 Ω), tolerance (±1%), power rating (0.25W), package (1206), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). Direct substitution is supported at the component level.

Q: What is the difference between parts marked "Active" and "Not For New Designs"?

A: "Active" status indicates the manufacturer continues production and supports new designs. "Not For New Designs" indicates the manufacturer has discontinued active support but may maintain limited inventory for legacy applications. For new product development, select only parts with "Active" status.

Q: Are there differences in automotive qualification between these parts?

A: RMCF1206FT412R and CRCW1206412RFKEA both carry AEC-Q200 automotive qualification. CR1206-FX-4120ELF features moisture resistance but does not specify AEC-Q200. ERJ-8ENF4120V carries AEC-Q200 but is marked "Not For New Designs." For automotive applications requiring AEC-Q200 compliance, CRCW1206412RFKEA is the recommended active substitute.

Q: Do physical dimension variations affect substitutability?

A: No. All parts conform to 1206 (3216 Metric) package specifications. Minor variations in seated height (0.024" to 0.030") fall within standard package tolerances and do not affect circuit performance or PCB assembly compatibility.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. These parts can be stored at standard ambient conditions without desiccant packaging or time-limited exposure windows.

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