SF22G A0G Equivalent & Substitute Parts

Part Overview

The SF22G A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 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 Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Package / Case	DO-204AC, DO-15, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SF22G A0G are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 2 A
Package / Case: DO-204AC (DO-15) Axial
Mounting Type: Through Hole

Secondary Parameters (Allowable Variation):

Voltage - Forward (Vf) (Max) @ If: 950 mV @ 2 A (allowable tolerance)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 35 ns to 50 ns range
Current - Reverse Leakage @ Vr: 5 µA @ 100 V
Operating Temperature - Junction: -55°C to -65°C minimum; 150°C to 175°C maximum

Full Equivalents (2 A Rating):

EGP20B-E3/54
EGP20B-E3/73

Partial Equivalents (1.5 A Rating - Reduced Current Capacity):

GP15B-E3/54
RGP15B-E3/54

Parameter Comparison

Parameter	SF22G A0G	EGP20B-E3/54	EGP20B-E3/73	GP15B-E3/54	RGP15B-E3/54
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A	1.5 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	950 mV @ 2 A	950 mV @ 2 A	1.1 V @ 1.5 A	1.3 V @ 1.5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns	50 ns	50 ns	3.5 µs	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 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
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Full Equivalents (Direct Substitution):

EGP20B-E3/54 and EGP20B-E3/73 are direct electrical equivalents to the SF22G A0G. Both parts maintain the 100 V / 2 A rating, identical forward voltage characteristics, and fast recovery speed classification. The primary difference is packaging format (Cut Tape versus bulk), which does not affect electrical performance. Both parts are Active status, RoHS3 compliant, and REACH unaffected. The extended operating temperature range (-65°C minimum versus -55°C) provides additional thermal margin. These parts are suitable for direct replacement in applications requiring the full 2 A current capacity.

Partial Equivalents (Current-Limited Substitution):

GP15B-E3/54 and RGP15B-E3/54 are rated for 1.5 A average rectified current, representing a 25% reduction in current capacity compared to the SF22G A0G. These parts maintain the 100 V reverse voltage rating and DO-204AC package compatibility. GP15B-E3/54 employs standard recovery speed (>500ns), while RGP15B-E3/54 maintains fast recovery speed (≤500ns). Both parts are Active status and RoHS3 compliant. These parts are suitable only for applications where the circuit design operates at or below 1.5 A average rectified current.

All substitute parts maintain compliance with RoHS3 and REACH requirements, ensuring regulatory equivalence with the original SF22G A0G component.

Frequently Asked Questions (FAQ)

Q: Can EGP20B-E3/54 and EGP20B-E3/73 be used interchangeably with SF22G A0G?

A: Yes. Both EGP20B-E3/54 and EGP20B-E3/73 are full electrical equivalents with identical 100 V / 2 A ratings, forward voltage characteristics, and fast recovery speed classification. The difference between these two Vishay parts is packaging format (Cut Tape). Both are suitable for direct replacement in the same circuit application.

Q: What is the difference between the 2 A rated parts and the 1.5 A rated parts?

A: The primary difference is average rectified current capacity. EGP20B-E3/54 and EGP20B-E3/73 are rated for 2 A, matching the SF22G A0G specification. GP15B-E3/54 and RGP15B-E3/54 are rated for 1.5 A. The 1.5 A parts are suitable only for applications operating at or below 1.5 A average rectified current. All parts share the same 100 V reverse voltage rating and DO-204AC package.

Q: Are there differences in recovery speed between the substitute parts?

A: Yes. SF22G A0G, EGP20B-E3/54, EGP20B-E3/73, and RGP15B-E3/54 are classified as fast recovery (≤500ns). GP15B-E3/54 is classified as standard recovery (>500ns). In applications sensitive to switching transients or high-frequency operation, fast recovery parts are preferred. Standard recovery parts introduce longer reverse recovery time (3.5 µs for GP15B-E3/54).

Q: Do all substitute parts fit the same DO-204AC package footprint?

A: Yes. All substitute parts use the DO-204AC (DO-15) axial through-hole package. Mechanical compatibility is maintained across all listed parts. No PCB layout modifications are required for substitution.

Q: What is the operating temperature range difference?

A: SF22G A0G operates from -55°C to 150°C junction temperature. EGP20B-E3/54 and EGP20B-E3/73 operate from -65°C to 150°C. GP15B-E3/54 and RGP15B-E3/54 operate from -65°C to 175°C. The extended minimum temperature range of Vishay parts provides additional margin for low-temperature applications. The extended maximum temperature range of the 1.5 A parts provides additional margin for high-temperature applications.

Q: Are all parts RoHS3 compliant?

A: Yes. SF22G A0G, EGP20B-E3/54, EGP20B-E3/73, GP15B-E3/54, and RGP15B-E3/54 are all RoHS3 compliant and REACH unaffected. Regulatory compliance is maintained across all substitute selections.

Q: What is the reverse leakage current specification?

A: All listed parts specify 5 µA reverse leakage current at 100 V. This parameter is identical across SF22G A0G and all substitute parts, ensuring equivalent leakage performance in circuit applications.

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