SF2008G Equivalent & Substitute Parts

Part Overview

The SF2008G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 20 A average rectified current in a TO-220AB through-hole package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates across a junction temperature range of -55°C to 150°C and complies with RoHS3 and REACH standards.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	20	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 10 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	TO-220-3	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SF2008G is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 600 V or higher to ensure safe operation in the original circuit application.

Current Rating: The average rectified current must be equal to or greater than 20 A. Parts with higher current ratings (such as 30 A) are acceptable as they provide additional design margin.

Package and Mounting: All substitutes must use through-hole mounting in a TO-220 package variant to ensure mechanical and electrical compatibility with existing PCB layouts.

Speed Classification: Fast recovery characteristics (≤ 500ns) are required to maintain switching performance in the intended application.

Compliance Standards: RoHS3 compliance is mandatory for all substitutes to meet regulatory requirements.

Substitutes are grouped into two categories: Parametric Equivalents (matching all key specifications) and Similar Parts (meeting voltage and package requirements with variations in current rating or other secondary parameters).

Parameter Comparison

Parameter	SF2008G	SF2008GHC0G	APT30DQ60KG	SDUR2060CT
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Microchip Technology	SMC Diode Solutions
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	20 A	20 A	30 A	Per Diode: Not Specified
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 10 A	1.7 V @ 10 A	2.4 V @ 30 A	2.2 V @ 10 A
Reverse Recovery Time (trr)	35 ns	35 ns	30 ns	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	25 µA @ 600 V	10 µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Package / Case	TO-220-3	TO-220-3	TO-220-2	TO-220-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 150°C
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SF2008GHC0G (Parametric Equivalent - Recommended Primary Substitute)

The SF2008GHC0G is a direct parametric equivalent to the SF2008G, manufactured by the same supplier (Taiwan Semiconductor Corporation). This part maintains identical electrical specifications including 600 V reverse voltage, 20 A average rectified current, 1.7 V forward voltage at 10 A, and 35 ns reverse recovery time. The SF2008GHC0G carries active product status with 782 units in stock and includes AEC-Q101 automotive qualification, providing enhanced reliability assurance. This part is the optimal choice for direct replacement in existing designs.

APT30DQ60KG (Similar Part - Higher Current Rating)

The APT30DQ60KG, manufactured by Microchip Technology, meets the 600 V voltage requirement and provides a higher current rating of 30 A compared to the 20 A specification of the SF2008G. This part is suitable for applications where additional current margin is acceptable or beneficial. The APT30DQ60KG features a 30 ns reverse recovery time (faster than the original) and operates across an extended temperature range of -55°C to 175°C. The TO-220-2 package differs from the TO-220-3 configuration of the original part, requiring verification of PCB layout compatibility. This part has 4224 units in stock and active product status.

SDUR2060CT (Similar Part - Diode Array Configuration)

The SDUR2060CT, manufactured by SMC Diode Solutions, is a diode array with 1 pair common cathode configuration in a TO-220-3 package. This part maintains the 600 V voltage rating and through-hole mounting compatibility. The SDUR2060CT is suitable only for applications where the diode array configuration and common cathode topology align with circuit requirements. Forward voltage is specified at 2.2 V @ 10 A, and reverse recovery time is 50 ns. This part has 1790 units in stock and active product status. REACH status is listed as affected, requiring compliance verification for specific applications.

Frequently Asked Questions (FAQ)

Q: Can the SF2008GHC0G be used as a direct replacement for the SF2008G?

A: Yes. The SF2008GHC0G is a parametric equivalent with identical voltage rating (600 V), current rating (20 A), forward voltage (1.7 V @ 10 A), and reverse recovery time (35 ns). Both parts use the TO-220-3 package and through-hole mounting. The SF2008GHC0G is the recommended substitute.

Q: Is the APT30DQ60KG compatible with the SF2008G application?

A: The APT30DQ60KG meets the 600 V voltage requirement and provides higher current capacity (30 A versus 20 A). However, the TO-220-2 package differs from the TO-220-3 package of the original part. PCB layout compatibility must be verified before selection. The higher current rating provides design margin but may not be necessary for all applications.

Q: What is the difference between the TO-220-2 and TO-220-3 packages?

A: The TO-220-2 package has two leads, while the TO-220-3 package has three leads. These packages have different pin configurations and PCB footprints. Direct mechanical substitution is not possible without PCB modification.

Q: Can the SDUR2060CT replace the SF2008G?

A: The SDUR2060CT is a diode array with common cathode configuration, not a single diode. This part is suitable only if the circuit design specifically requires a diode array topology. The TO-220-3 package and 600 V rating are compatible, but the functional configuration differs fundamentally from the SF2008G.

Q: What compliance standards apply to all substitute parts?

A: All substitute parts listed are RoHS3 compliant. The SF2008GHC0G includes AEC-Q101 automotive qualification. The SDUR2060CT has REACH status listed as affected, requiring compliance verification for specific regulatory jurisdictions.

Q: Are there inventory considerations for part selection?

A: The SF2008GHC0G has 782 units in stock, the APT30DQ60KG has 4224 units in stock, and the SDUR2060CT has 1790 units in stock. All parts are available for procurement.

Q: What is the operating temperature range for each substitute?

A: The SF2008GHC0G and SDUR2060CT operate from -55°C to 150°C junction temperature. The APT30DQ60KG operates from -55°C to 175°C, providing an extended upper temperature limit.

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