SF2L8G A0G Equivalent & Substitute Parts

Part Overview

The SF2L8G A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 2 A average rectified current in a DO-204AC (DO-15) through-hole axial package. This component is classified as a fast recovery diode with a reverse recovery time of 35 ns, suitable for standard rectification applications requiring moderate current handling at high voltage levels. The part is Active in product status, RoHS3 compliant, and carries unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the main part within the same package category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 2 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	1	µA @ 600 V
Package / Case	DO-204AC, DO-15, Axial	-
Mounting Type	Through Hole	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SF2L8G A0G are classified into two categories based on electrical parameter alignment:

Parametric Equivalent (Direct Substitution): Parts that match all critical electrical specifications including voltage rating (600 V), current rating (2 A), forward voltage (1.7 V @ 2 A), recovery speed classification (Fast Recovery ≤ 500ns), and package type (DO-204AC). The SF28G from Taiwan Semiconductor Corporation qualifies as a parametric equivalent with identical electrical performance characteristics.

Similar/Compatible Substitutes (Functional Alternatives): Parts that maintain the same voltage rating (600 V) and package configuration (DO-204AC) but differ in current rating (1.0 A to 1.5 A) or recovery time specifications. These include 1N5397GP-E3/54, 1N5619GP-E3/54, GP15J-E3/54, RGP15J-E3/54, and RGP15J-E3/73 from Vishay General Semiconductor - Diodes Division. These parts are suitable for applications where the required current does not exceed their rated specifications and where the operating temperature range (-65°C to 175°C) provides extended thermal capability.

Substitution eligibility is determined by: (1) matching or exceeding voltage rating, (2) current rating equal to or greater than application requirements, (3) compatible package and mounting type, (4) compliance certifications (RoHS3, REACH Unaffected), and (5) active product status.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]
SF2L8G A0G	Taiwan Semiconductor	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	35	1 @ 600 V	DO-204AC	-55 to 150
SF28G	Taiwan Semiconductor	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	35	5 @ 600 V	DO-204AC	-55 to 150
1N5397GP-E3/54	Vishay General Semiconductor	600	1.5	1.4 @ 1.5 A	Standard Recovery >500ns	2000	5 @ 600 V	DO-204AC	-65 to 175
1N5619GP-E3/54	Vishay General Semiconductor	600	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	250	0.5 @ 600 V	DO-204AC	-65 to 175
GP15J-E3/54	Vishay General Semiconductor	600	1.5	1.1 @ 1.5 A	Standard Recovery >500ns	3500	5 @ 600 V	DO-204AC	-65 to 175
RGP15J-E3/54	Vishay General Semiconductor	600	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	DO-204AC	-65 to 175
RGP15J-E3/73	Vishay General Semiconductor	600	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	DO-204AC	-65 to 175

Engineering Selection Recommendations

SF28G (Taiwan Semiconductor Corporation): This part is the direct parametric equivalent to SF2L8G A0G, matching all electrical specifications including 600 V rating, 2 A current capacity, 1.7 V forward voltage, and 35 ns reverse recovery time. Both parts are Active in product status, RoHS3 compliant, and REACH unaffected. The SF28G is available in higher inventory (30,200 pcs) compared to the main part (791 pcs) and is supplied in Cut Tape packaging. This part is suitable for direct replacement in all applications where SF2L8G A0G is specified.

1N5619GP-E3/54 (Vishay General Semiconductor - Diodes Division): This part maintains the 600 V voltage rating and fast recovery speed classification (≤ 500ns, 250 ns trr) but is rated for 1 A average rectified current. Selection of this part is appropriate only for applications where the required current does not exceed 1 A. The part offers extended operating temperature range (-65°C to 175°C) and is Active in product status with RoHS3 compliance.

RGP15J-E3/54 and RGP15J-E3/73 (Vishay General Semiconductor - Diodes Division): Both parts maintain the 600 V voltage rating and fast recovery speed classification (≤ 500ns, 250 ns trr) with 1.5 A current rating. These parts are suitable for applications requiring up to 1.5 A at 600 V. Both are Active in product status, RoHS3 compliant, and offer extended operating temperature range (-65°C to 175°C). The RGP15J-E3/73 variant provides higher inventory availability (10,300 pcs).

1N5397GP-E3/54 and GP15J-E3/54 (Vishay General Semiconductor - Diodes Division): Both parts are rated for 1.5 A at 600 V but employ standard recovery speed classification (>500ns) with significantly longer reverse recovery times (2000 ns and 3500 ns respectively). These parts are suitable only for applications where fast recovery performance is not a critical requirement. Both are Active in product status and RoHS3 compliant with extended operating temperature range (-65°C to 175°C).

All substitute parts are supplied in Cut Tape packaging and maintain DO-204AC (DO-15) axial through-hole configuration compatible with the main part's mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can SF28G be used as a direct replacement for SF2L8G A0G?

A: Yes. SF28G is a parametric equivalent with matching 600 V voltage rating, 2 A current capacity, 1.7 V forward voltage, and fast recovery speed (35 ns trr). Both parts are RoHS3 compliant, Active in product status, and use identical DO-204AC packaging. The only difference is reverse leakage current (5 µA vs. 1 µA), which does not affect functional compatibility in standard rectification applications.

Q: What is the difference between fast recovery and standard recovery diodes in this list?

A: Fast recovery diodes have reverse recovery time ≤ 500 ns (SF2L8G A0G: 35 ns, 1N5619GP-E3/54: 250 ns, RGP15J variants: 250 ns), while standard recovery diodes exceed 500 ns (1N5397GP-E3/54: 2000 ns, GP15J-E3/54: 3500 ns). Fast recovery diodes are suitable for high-frequency switching applications and reduce switching losses. Standard recovery diodes are appropriate for lower-frequency rectification where recovery speed is not critical.

Q: Can I use a 1.5 A rated diode in place of the 2 A SF2L8G A0G?

A: No. The 1.5 A rated parts (1N5397GP-E3/54, GP15J-E3/54, RGP15J-E3/54, RGP15J-E3/73) are not suitable for applications requiring 2 A average rectified current. Using an undersized current rating will result in excessive heat generation and reduced component reliability. Substitute parts must equal or exceed the application's current requirement.

Q: Are all substitute parts available in the same packaging as SF2L8G A0G?

A: Yes. All listed substitute parts use DO-204AC (DO-15) axial through-hole packaging, which is mechanically compatible with the main part. However, the main part is supplied in standard packaging while substitute parts are supplied in Cut Tape (CT) packaging. Both packaging formats contain identical components; the difference is in the delivery format for automated assembly or manual handling.

Q: What is the operating temperature range difference between SF2L8G A0G and Vishay substitutes?

A: SF2L8G A0G operates from -55°C to 150°C junction temperature. Vishay General Semiconductor parts (1N5397GP-E3/54, 1N5619GP-E3/54, GP15J-E3/54, RGP15J-E3/54, RGP15J-E3/73) operate from -65°C to 175°C. The Vishay parts provide extended low-temperature capability (-65°C vs. -55°C) and higher maximum junction temperature (175°C vs. 150°C), making them suitable for applications with more demanding thermal requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts, including SF28G and all Vishay General Semiconductor diodes, are RoHS3 compliant and REACH unaffected. All parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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

A: Reverse leakage current (Ir) represents the small current flowing through the diode in reverse bias condition. SF2L8G A0G specifies 1 µA @ 600 V, while SF28G specifies 5 µA @ 600 V. Lower leakage current reduces power dissipation in reverse bias conditions. For most standard rectification applications, this difference is negligible. Applications with stringent leakage requirements should verify compatibility with the specific substitute part's leakage specification.

Q: Can I substitute a lower-voltage rated diode for the 600 V SF2L8G A0G?

A: No. All listed substitute parts maintain the 600 V voltage rating. Using a diode with lower voltage rating will result in component failure or reverse breakdown at the specified operating voltage. Voltage rating must equal or exceed the application requirement.

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