RGF1J Equivalent & Substitute Parts

Part Overview

The RGF1J is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status within onsemi's product portfolio. The fast recovery characteristic (≤500 ns) and 250 ns reverse recovery time position this diode for applications requiring rapid switching performance in power conversion and protection circuits.

Due to its discontinued design status, equivalent and substitute parts from active product lines or alternative manufacturers provide viable alternatives for ongoing production requirements, maintenance applications, and design transitions.

Key Parameters

Parameter	RGF1J Value	Unit
Voltage - DC Reverse (Vr) Maximum	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) Maximum @ If	1.3	V @ 1 A
Speed Classification	Fast Recovery ≤500ns, >200mA	-
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Capacitance @ Vr, F	8.5	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-65 to 175	°C
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the RGF1J is determined by strict electrical and mechanical compatibility across the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) Maximum: 600 V
Current - Average Rectified (Io): 1 A
Package / Case: DO-214AC or SMA equivalent
Mounting Type: Surface Mount

Performance Characteristics Affecting Substitution:

Speed classification (Fast Recovery vs. Standard Recovery)
Reverse Recovery Time (trr)
Forward Voltage (Vf) at rated current
Reverse Leakage Current
Operating Temperature Range

Substitute parts are grouped into three categories:

Direct Parametric Equivalents – Parts matching all electrical specifications and fast recovery characteristics of the RGF1J
Functional Equivalents – Parts meeting voltage and current ratings with compatible package but differing in recovery speed or forward voltage
Automotive-Grade Alternatives – Parts with AEC-Q101 qualification for applications requiring automotive reliability standards

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (V)	Speed	trr (ns)	Ir @ Vr (µA)	Package	Temp Range (°C)	Product Status
RGF1J	onsemi	600	1	1.3 @ 1A	Fast Recovery ≤500ns	250	5 @ 600V	DO-214AC (SMA)	-65 to 175	Not For New Designs
MRA4005T1G	onsemi	600	1	1.1 @ 1A	Standard Recovery >500ns	-	10 @ 600V	DO-214AC (SMA)	-55 to 175	Not For New Designs
MRA4005T3G	onsemi	600	1	1.1 @ 1A	Standard Recovery >500ns	-	10 @ 600V	DO-214AC (SMA)	-55 to 175	Not For New Designs
MURA160T3G	onsemi	600	1	1.25 @ 1A	Fast Recovery ≤500ns	75	5 @ 600V	DO-214AC (SMA)	-65 to 175	Active
NRVA4005T3G	onsemi	600	1	1.1 @ 1A	Standard Recovery >500ns	-	10 @ 600V	DO-214AC (SMA)	-55 to 150	Not For New Designs
RS1J	Taiwan Semiconductor Corporation	600	1	1.3 @ 1A	Fast Recovery ≤500ns	250	5 @ 600V	DO-214AC (SMA)	-55 to 150	Active
NRVRGF1J	onsemi	600	1	1.3 @ 1A	Fast Recovery ≤500ns	250	5 @ 600V	DO-214AC (SMA)	-65 to 175	Not For New Designs
RGF1J-E3/67A	Vishay General Semiconductor - Diodes Division	600	1	1.3 @ 1A	Fast Recovery ≤500ns	250	5 @ 600V	DO-214BA (GF1)	-65 to 175	Active
CFRA105-G	Comchip Technology	600	1	1.3 @ 1A	Fast Recovery ≤500ns	250	5 @ 600V	DO-214AC (SMA)	-40 to 150	Active
CGRA4005-G	Comchip Technology	600	1	1.1 @ 1A	Fast Recovery ≤500ns	-	5 @ 600V	DO-214AC (SMA)	-55 to 150	Active
CMR1-06M BK PBFREE	Central Semiconductor Corp	600	1	1.1 @ 1A	Standard Recovery >500ns	-	5 @ 600V	DO-214AC (SMA)	-65 to 150	Active

Engineering Selection Recommendations

Primary Recommendation for Active Production:

The MURA160T3G (onsemi) is the preferred substitute for new designs and ongoing production. This part maintains active product status, matches the RGF1J's fast recovery characteristic (75 ns trr vs. 250 ns), operates across the full temperature range (-65°C to 175°C), and is ROHS3 compliant. The improved reverse recovery time provides superior switching performance in modern power conversion applications.

Alternative for Direct Replacement:

The RS1J (Taiwan Semiconductor Corporation) provides an electrically identical substitute with identical fast recovery specifications (250 ns trr) and forward voltage (1.3 V @ 1 A). This part carries active product status and maintains full compliance with ROHS3 and REACH requirements. Operating temperature range is -55°C to 150°C, which is suitable for most industrial applications.

Package Consideration:

The RGF1J-E3/67A (Vishay General Semiconductor - Diodes Division) is an active product offering identical electrical performance but in the DO-214BA (GF1) package instead of DO-214AC (SMA). This part is suitable only for applications where the alternative package footprint is acceptable.

Standard Recovery Alternative:

For applications where switching speed is not critical, the MRA4005T3G or MRA4005T1G (onsemi) provide cost-effective alternatives with standard recovery characteristics (>500 ns). These parts maintain 600 V / 1 A ratings and ROHS3 compliance but are classified as "Not For New Designs."

Automotive Applications:

The NRVA4005T3G (onsemi) is AEC-Q101 qualified for automotive applications requiring reliability certification. This part operates at -55°C to 150°C and provides standard recovery characteristics.

Comchip Technology Options:

The CFRA105-G and CGRA4005-G (Comchip Technology) are active products offering fast recovery performance in the DO-214AC (SMA) package. Both are ROHS3 compliant and suitable for direct substitution in applications where Comchip sourcing is preferred.

Frequently Asked Questions (FAQ)

Q: Can the RGF1J be directly replaced with the MRA4005T3G?

A: The MRA4005T3G is electrically compatible in terms of voltage (600 V) and current (1 A) ratings and uses the same DO-214AC (SMA) package. However, the MRA4005T3G has standard recovery characteristics (>500 ns) compared to the RGF1J's fast recovery (≤500 ns). This difference affects switching speed and may impact circuit performance in high-frequency applications. Verify circuit requirements before substitution.

Q: What is the difference between DO-214AC and DO-214BA packages?

A: Both packages are surface mount diode packages with identical electrical performance. DO-214AC (SMA) and DO-214BA (GF1) differ in physical dimensions and PCB footprint. The RGF1J uses DO-214AC, while the RGF1J-E3/67A uses DO-214BA. Substitution between these packages requires PCB layout modification.

Q: Is the RS1J a suitable replacement for the RGF1J?

A: Yes. The RS1J (Taiwan Semiconductor Corporation) matches all electrical specifications of the RGF1J: 600 V reverse voltage, 1 A current rating, 1.3 V forward voltage, fast recovery (250 ns trr), and identical DO-214AC (SMA) package. The RS1J carries active product status. Operating temperature range is -55°C to 150°C versus the RGF1J's -65°C to 175°C; verify application temperature requirements.

Q: Why does the MURA160T3G have a lower reverse recovery time (75 ns) than the RGF1J (250 ns)?

A: The MURA160T3G represents a newer generation of fast recovery diodes with improved switching characteristics. The 75 ns reverse recovery time indicates faster switching transitions, which reduces switching losses and improves efficiency in power conversion circuits. This is a performance enhancement, not a limitation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant and REACH unaffected, matching the RGF1J's environmental compliance status.

Q: What does "Not For New Designs" mean for the RGF1J?

A: This designation indicates the RGF1J has reached end-of-life status within onsemi's product portfolio. While existing inventory remains available, onsemi does not recommend this part for new circuit designs. Substitute parts with "Active" product status are preferred for new development.

Q: Can the RGF1J be used in automotive applications?

A: The RGF1J itself is not AEC-Q101 qualified. For automotive applications requiring reliability certification, the NRVA4005T3G (onsemi) is the appropriate substitute, as it carries AEC-Q101 qualification.

Q: What is the significance of reverse leakage current differences between parts?

A: Reverse leakage current (Ir) affects power dissipation and circuit performance at high temperatures. The RGF1J specifies 5 µA @ 600 V, while some alternatives specify 10 µA. Lower leakage current reduces standby power consumption. For most applications, both values are acceptable; verify requirements for low-power or high-temperature circuits.

Q: Is packaging (Cut Tape vs. Tape & Reel) a factor in substitution?

A: Packaging format (Cut Tape, Tape & Reel, or Bulk) affects supply chain logistics and handling but does not impact electrical compatibility. The same part number may be available in multiple packaging formats. Verify packaging availability with your supplier based on production volume and assembly requirements.

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