RMCF1206FG412R Equivalent & Substitute Parts

Part Overview

The RMCF1206FG412R is a 412 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently active in production with 879 units in stock.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that meet identical electrical and mechanical specifications.

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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (412 Ohms), tolerance (±1%), power rating (0.25W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, MSL 1).

All identified substitute parts meet these core electrical and mechanical requirements. Variations in physical dimensions (length, width, height) and specific feature designations (automotive AEC-Q200 rating, moisture resistance) are noted but do not disqualify substitution when the primary parameters align.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op. Temp Range	AEC-Q200	Product Status	Inventory
RMCF1206FG412R	Stackpole Electronics Inc	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	879 Pcs
RMCF1206FT412R	Stackpole Electronics Inc	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	5592 Pcs
CR1206-FX-4120ELF	Bourns Inc.	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	26090 Pcs
CRCW1206412RFKEA	Vishay Dale	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Active	23525 Pcs
ERJ-8ENF4120V	Panasonic Electronic Components	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Yes	Not For New Designs	36174 Pcs
MCR18ERTF4120	Rohm Semiconductor	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Discontinued at DiGi Electronics	3742 Pcs
RC1206FR-07412RL	YAGEO	412 Ω	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	No	Active	48832 Pcs

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, RMCF1206FT412R (Stackpole), CRCW1206412RFKEA (Vishay Dale), and ERJ-8ENF4120V (Panasonic) are qualified alternatives. RMCF1206FT412R offers the highest inventory availability within the Stackpole product line at 5592 units.

CRCW1206412RFKEA (Vishay Dale) provides AEC-Q200 compliance with 23525 units in stock and represents a cross-manufacturer option with active product status.

For applications where automotive qualification is not required, CR1206-FX-4120ELF (Bourns) and RC1206FR-07412RL (YAGEO) are electrically and mechanically equivalent alternatives with significantly higher inventory levels (26090 and 48832 units respectively).

ERJ-8ENF4120V carries a "Not For New Designs" status and should be avoided for new product development. MCR18ERTF4120 is discontinued at DiGi Electronics and represents a legacy option with limited future availability.

Frequently Asked Questions (FAQ)

Q: Can RMCF1206FG412R be replaced with CR1206-FX-4120ELF? A: Yes, from an electrical and mechanical standpoint. Both parts share identical resistance (412 Ω), tolerance (±1%), power rating (0.25W), package (1206), and temperature specifications. The primary difference is that CR1206-FX-4120ELF lacks AEC-Q200 automotive certification. Selection depends on whether automotive qualification is a design requirement.

Q: What is the difference between RMCF1206FG412R and RMCF1206FT412R? A: Both are Stackpole 412 Ohm 1% 1/4W 1206 resistors with identical electrical specifications and AEC-Q200 rating. The difference lies in packaging designation and inventory availability. RMCF1206FT412R has significantly higher stock (5592 vs 879 units).

Q: Are there non-automotive qualified alternatives? A: Yes. CR1206-FX-4120ELF (Bourns), RC1206FR-07412RL (YAGEO), and MCR18ERTF4120 (Rohm) meet all electrical and mechanical parameters but do not carry AEC-Q200 certification. These are suitable for non-automotive applications.

Q: Why is ERJ-8ENF4120V marked "Not For New Designs"? A: This designation indicates the manufacturer has transitioned the product to legacy status. While electrically equivalent and currently in stock, it should not be selected for new product development due to uncertain long-term availability and potential discontinuation.

Q: Do all substitute parts have the same physical dimensions? A: All parts conform to the 1206 (3216 Metric) package standard with nominal dimensions of 0.126" L × 0.063" W (3.20mm × 1.60mm). Minor variations in seated height (0.024" to 0.030") exist but do not affect PCB assembly compatibility.

Q: What is the significance of MSL 1 rating? A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. All listed parts carry this rating, eliminating moisture management as a substitution constraint.

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