RSFJL RFG Equivalent & Substitute Parts

Part Overview

The RSFJL RFG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 500 mA average rectified current. This component is classified as a fast recovery diode with a reverse recovery time of 250 ns, packaged in the DO-219AB (Sub SMA) surface mount configuration. The part is currently Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching or exceeding the electrical performance specifications, package compatibility, and operational requirements of the RSFJL RFG. Alternative components may be necessary due to inventory availability, product lifecycle status, or specific application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	500	mA
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	V
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Capacitance @ Vr, F	4	pF @ 4V, 1MHz
Package / Case	DO-219AB	Sub SMA
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the RSFJL RFG are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical or functionally equivalent electrical specifications within the same package type (DO-219AB Sub SMA). These parts satisfy the core requirements of 600 V reverse voltage rating, 500 mA average rectified current, and fast recovery characteristics. Parametric equivalents include RSFJL and RSFJL R3G, both manufactured by Taiwan Semiconductor Corporation.

Similar Parts exceed the electrical specifications of the main part while maintaining package compatibility and core functional characteristics. These components provide higher current ratings or improved performance metrics and are suitable for applications where the RSFJL RFG specifications represent a minimum requirement. Similar parts include VS-1EFU06HM3/I (1 A rating) and VS-2EFU06HM3/I (2 A rating), both manufactured by Vishay General Semiconductor - Diodes Division.

Substitution eligibility is determined by the following key parameters:

Voltage - DC Reverse (Vr) (Max): minimum 600 V
Current - Average Rectified (Io): minimum 500 mA
Package / Case: DO-219AB (Sub SMA)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum
RoHS3 Compliance: Required
Moisture Sensitivity Level: 1 (Unlimited)

Parameter Comparison

Parameter	RSFJL RFG	RSFJL	RSFJL R3G	VS-1EFU06HM3/I	VS-2EFU06HM3/I
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	500 mA	500 mA	500 mA	1 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 500 mA	1.3 V @ 500 mA	1.3 V @ 500 mA	1.2 V @ 1 A	1.35 V @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	250 ns	500 ns	250 ns	32 ns	55 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	3 µA @ 600 V	3 µA @ 600 V
Capacitance @ Vr, F	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	4 pF @ 4V, 1MHz	-	-
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Supplier Device Package	Sub SMA	Sub SMA	Sub SMA	DO-219AB (SMF)	DO-219AB (SMF)
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 175°C
Product Status	Active	Not For New Designs	Discontinued at DiGi Electronics	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	-	-	-	Automotive	Automotive
Qualification	-	-	-	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

RSFJL (Parametric Equivalent): This part maintains identical electrical specifications to the RSFJL RFG with matching 600 V reverse voltage, 500 mA current rating, and 250 ns reverse recovery time. However, the product status is listed as "Not For New Designs," indicating this variant is in end-of-life phase. Selection of this part is appropriate only for legacy system maintenance or replacement applications where design continuity is required. RoHS3 compliance and unlimited MSL rating are maintained.

RSFJL R3G (Parametric Equivalent): This variant provides identical electrical performance to the RSFJL RFG, including 600 V reverse voltage, 500 mA current rating, and 250 ns reverse recovery time. The product status is "Discontinued at DiGi Electronics," indicating limited availability through standard distribution channels. This part is suitable for replacement applications where existing inventory exists or through alternative supply sources. RoHS3 compliance and unlimited MSL rating are maintained.

VS-1EFU06HM3/I (Similar Part - Higher Current Rating): This Vishay component exceeds the RSFJL RFG specifications with a 1 A average rectified current rating while maintaining the 600 V reverse voltage requirement. The part features superior reverse recovery time (32 ns versus 250 ns) and lower reverse leakage current (3 µA versus 5 µA). This component carries Active product status with AEC-Q101 automotive qualification and extended operating temperature range (-55°C to 175°C). Selection is appropriate for applications requiring higher current capacity or improved switching performance within the same package footprint.

VS-2EFU06HM3/I (Similar Part - Highest Current Rating): This Vishay component provides the highest current rating among available substitutes at 2 A average rectified current, maintaining 600 V reverse voltage compatibility. The part features superior reverse recovery time (55 ns) and lower reverse leakage current (3 µA). This component carries Active product status with AEC-Q101 automotive qualification and extended operating temperature range (-55°C to 175°C). Selection is appropriate for applications requiring maximum current capacity or where design margin for current handling is critical.

For new designs, selection of VS-1EFU06HM3/I or VS-2EFU06HM3/I is recommended based on current requirements, as both maintain Active product status and provide superior electrical performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can RSFJL RFG be directly replaced with RSFJL or RSFJL R3G?

A: Direct replacement is electrically feasible as both parts maintain identical 600 V reverse voltage, 500 mA current rating, and fast recovery characteristics within the same DO-219AB package. However, RSFJL is marked "Not For New Designs" and RSFJL R3G is "Discontinued at DiGi Electronics," indicating limited availability. These parts are suitable only for legacy system maintenance or where existing inventory is available.

Q: What is the difference between the Taiwan Semiconductor Corporation parts and Vishay parts?

A: Taiwan Semiconductor Corporation parts (RSFJL, RSFJL R3G) are rated for 500 mA at 600 V with 250 ns reverse recovery time. Vishay parts (VS-1EFU06HM3/I, VS-2EFU06HM3/I) provide higher current ratings (1 A and 2 A respectively) with faster reverse recovery times (32 ns and 55 ns) and lower reverse leakage current. Vishay parts carry AEC-Q101 automotive qualification and extended temperature range to 175°C.

Q: Are the Vishay parts (VS-1EFU06HM3/I and VS-2EFU06HM3/I) suitable substitutes for the RSFJL RFG?

A: Yes, both Vishay parts are suitable substitutes. They maintain the required 600 V reverse voltage rating and DO-219AB package compatibility. VS-1EFU06HM3/I provides 1 A current capacity (exceeding the 500 mA requirement), while VS-2EFU06HM3/I provides 2 A capacity. Both parts offer improved electrical performance with faster recovery times and lower leakage current. Selection depends on application current requirements.

Q: What is the significance of the "Not For New Designs" status on RSFJL?

A: "Not For New Designs" indicates the part is in end-of-life phase and should not be selected for new product development. This status signals that the manufacturer is phasing out the component, and long-term availability cannot be guaranteed. This part is appropriate only for maintaining or replacing existing systems already using this component.

Q: What is the significance of the "Discontinued at DiGi Electronics" status on RSFJL R3G?

A: "Discontinued at DiGi Electronics" indicates the part is no longer available through this major distribution channel. While the part may still be available through alternative sources or manufacturer inventory, procurement may be difficult or require extended lead times. This status suggests selection of alternative parts with Active status for new applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts (RSFJL, RSFJL R3G, VS-1EFU06HM3/I, VS-2EFU06HM3/I) are RoHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of the RSFJL RFG.

Q: What is the difference in reverse recovery time between the parts?

A: RSFJL RFG and RSFJL R3G feature 250 ns reverse recovery time. RSFJL features 500 ns reverse recovery time. VS-1EFU06HM3/I features 32 ns reverse recovery time, and VS-2EFU06HM3/I features 55 ns reverse recovery time. Faster reverse recovery times reduce switching losses and improve efficiency in high-frequency applications.

Q: Can RSFJL RFG be used in applications requiring higher current than 500 mA?

A: No, the RSFJL RFG is rated for maximum 500 mA average rectified current. Applications requiring higher current must use VS-1EFU06HM3/I (1 A) or VS-2EFU06HM3/I (2 A), which maintain the same 600 V reverse voltage rating and DO-219AB package compatibility.

Q: Are the operating temperature ranges compatible?

A: RSFJL RFG, RSFJL, and RSFJL R3G operate from -55°C to 150°C. VS-1EFU06HM3/I and VS-2EFU06HM3/I operate from -55°C to 175°C, providing extended high-temperature capability. For applications operating above 150°C, Vishay parts are required.

Q: What packaging formats are available for these parts?

A: RSFJL RFG is available in standard packaging. RSFJL, RSFJL R3G, VS-1EFU06HM3/I, and VS-2EFU06HM3/I are available in Tape & Reel (TR) format. All parts use the DO-219AB (Sub SMA) surface mount package configuration.

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