SF26G A0G Equivalent & Substitute Parts

Part Overview

The SF26G A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 2 A average rectified current in a DO-204AC (DO-15) axial through-hole package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the same application parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 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 SF26G A0G are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Package / Case: DO-204AC (DO-15) axial through-hole only
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

Current - Average Rectified (Io): Equal to or greater than 2 A
Voltage - Forward (Vf): Within acceptable circuit operating margins
Operating Temperature Range: Must encompass application requirements
Reverse Recovery Time (trr): Fast recovery characteristics preferred for switching applications

Substitute parts are grouped into two categories based on current rating alignment:

Category 1 - Full Current Rating Match (2 A): EGP20G-E3/54 provides identical 2 A current rating with equivalent 400 V reverse voltage and DO-204AC package compatibility.

Category 2 - Reduced Current Rating (1 A to 1.5 A): 1N5060GP-E3/54, 1N5617GP-E3/54, GP15G-E3/54, and RGP15G-E3/54 are listed as substitutes but operate at reduced current ratings (1 A or 1.5 A). These are suitable only for applications where the circuit current demand does not exceed their respective ratings.

Parameter Comparison

Parameter	SF26G A0G	1N5060GP-E3/54	1N5617GP-E3/54	EGP20G-E3/54	GP15G-E3/54	RGP15G-E3/54
Manufacturer	Taiwan Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	2 A	1 A	1 A	2 A	1.5 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	1.2 V @ 1 A	1.2 V @ 1 A	1.25 V @ 2 A	1.1 V @ 1.5 A	1.3 V @ 1.5 A
Speed Classification	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Fast Recovery ≤ 500ns
Reverse Recovery Time (trr)	35 ns	2 µs	150 ns	50 ns	3.5 µs	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	500 nA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55 to 150°C	-65 to 175°C	-65 to 175°C	-65 to 150°C	-65 to 175°C	-65 to 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitute - Full Compatibility:

EGP20G-E3/54 is the direct equivalent substitute for SF26G A0G. Both components share identical electrical specifications: 400 V reverse voltage, 2 A average rectified current, and DO-204AC through-hole package. Both are Active product status and ROHS3 compliant. The EGP20G-E3/54 exhibits slightly improved reverse recovery time (50 ns versus 35 ns) and forward voltage characteristics (1.25 V @ 2 A versus 1.3 V @ 2 A), making it functionally interchangeable in applications designed for the SF26G A0G.

Secondary Substitutes - Current Rating Derating:

1N5617GP-E3/54 and RGP15G-E3/54 are suitable substitutes only when circuit current requirements do not exceed 1.5 A. Both maintain 400 V reverse voltage rating, DO-204AC package compatibility, and ROHS3 compliance. The 1N5617GP-E3/54 provides superior reverse recovery time (150 ns) and significantly lower reverse leakage current (500 nA @ 400 V) compared to the main part. RGP15G-E3/54 offers fast recovery characteristics (150 ns) with standard reverse leakage specifications.

1N5060GP-E3/54 and GP15G-E3/54 are substitutes for applications limited to 1 A and 1.5 A respectively. These components maintain voltage and package specifications but exhibit longer reverse recovery times (2 µs and 3.5 µs respectively), indicating standard recovery speed classification unsuitable for high-frequency switching applications.

All substitute parts maintain ROHS3 compliance, Active product status, and through-hole mounting compatibility with the original SF26G A0G.

Frequently Asked Questions (FAQ)

Q: Can EGP20G-E3/54 be used as a direct replacement for SF26G A0G?

A: Yes. EGP20G-E3/54 is a direct equivalent substitute. Both components are rated for 400 V reverse voltage, 2 A average rectified current, and utilize the DO-204AC (DO-15) axial through-hole package. Electrical performance characteristics are equivalent, and both are ROHS3 compliant and Active product status.

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

A: Fast recovery diodes (SF26G A0G, 1N5617GP-E3/54, EGP20G-E3/54, RGP15G-E3/54) have reverse recovery times ≤ 500 ns and are suitable for switching applications and high-frequency circuits. Standard recovery diodes (1N5060GP-E3/54, GP15G-E3/54) have reverse recovery times > 500 ns and are suitable for lower-frequency rectification applications. Selection depends on circuit switching frequency requirements.

Q: Can I use 1N5060GP-E3/54 in place of SF26G A0G?

A: 1N5060GP-E3/54 is a reduced-current substitute rated for 1 A maximum, compared to the SF26G A0G 2 A rating. This substitute is suitable only if the application circuit current does not exceed 1 A. The 400 V reverse voltage and DO-204AC package are compatible. However, the standard recovery speed (> 500 ns) differs from the fast recovery characteristics of the main part.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts listed utilize the DO-204AC (DO-15) axial through-hole package with identical mechanical dimensions and pin spacing. PCB footprint compatibility is maintained across all substitutes.

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

A: Reverse leakage current affects power dissipation and circuit performance under reverse bias conditions. 1N5617GP-E3/54 exhibits significantly lower reverse leakage (500 nA @ 400 V) compared to the SF26G A0G and other substitutes (5 µA @ 400 V). Lower leakage current reduces standby power consumption and heat generation in applications with sustained reverse bias conditions.

Q: Do all substitute parts meet the same environmental and compliance standards?

A: Yes. All substitute parts listed are ROHS3 compliant, have Moisture Sensitivity Level (MSL) 1 (Unlimited), are REACH Unaffected, and carry ECCN EAR99 classification. All are Active product status. Compliance and regulatory requirements are equivalent across all parts.

Q: Which substitute should I select if my application requires the lowest forward voltage drop?

A: GP15G-E3/54 exhibits the lowest forward voltage at 1.1 V @ 1.5 A. However, this part is limited to 1.5 A current rating. If full 2 A current capability is required, EGP20G-E3/54 provides the lowest forward voltage at 1.25 V @ 2 A among 2 A-rated substitutes.

Q: What is the operating temperature range consideration for substitute selection?

A: SF26G A0G operates from -55°C to 150°C. Most Vishay substitutes extend the upper temperature limit to 175°C (1N5060GP-E3/54, 1N5617GP-E3/54, GP15G-E3/54, RGP15G-E3/54), while EGP20G-E3/54 maintains the 150°C upper limit. Extended temperature range substitutes provide additional thermal margin for high-temperature applications.

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