DF08S-G Bridge Rectifier 800V 1A Single Phase Equivalent & Substitute Parts

Part Overview

The DF08S-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 800V peak reverse voltage and 1A average rectified current in a 4-SMD surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts maintain identical electrical specifications and mechanical compatibility while offering active product status or enhanced performance characteristics.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	800 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DF08S-G are qualified based on the following electrical and mechanical parameters:

Voltage - Peak Reverse (Max): 800 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Operating Temperature Range: -55°C ~ 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing
Diode Type: Single Phase
Technology: Standard

All substitute parts listed maintain these core electrical specifications and surface mount package compatibility. Variations in reverse leakage current and manufacturer certifications are noted but do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	Ir @ Vr	Temp Range	Package	RoHS
DF08S-G	Comchip Technology	Obsolete	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3
DF08S-HF	Comchip Technology	Active	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Not specified
DB106S-G	Comchip Technology	Obsolete	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3
DB106S-HF	Comchip Technology	Active	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	Not specified
DBLS106G C1G	Taiwan Semiconductor Corporation	Active	800 V	1 A	1.1 V @ 1 A	2 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3
DBLS106GHC1G	Taiwan Semiconductor Corporation	Active	800 V	1 A	1.1 V @ 1 A	2 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3
DF08S-E3/45	Vishay General Semiconductor - Diodes Division	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3
DF08SA-E3/45	Vishay General Semiconductor - Diodes Division	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3
DI108S_T0_00001	Panjit International Inc.	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3

Engineering Selection Recommendations

Primary Recommendation: DF08S-HF

The DF08S-HF is the manufacturer-recommended substitute from Comchip Technology. It maintains identical electrical specifications to the DF08S-G while offering active product status, ensuring long-term availability and supply chain continuity.

Alternative Active Substitutes:

DB106S-HF (Comchip Technology): Active status equivalent with identical electrical parameters. Suitable for direct replacement where design allows for package designation change from DFS to DBS.
DF08S-E3/45 (Vishay General Semiconductor - Diodes Division): Active status with ROHS3 compliance. Offers established supply availability and alternative sourcing.
DF08SA-E3/45 (Vishay General Semiconductor - Diodes Division): Active status with ROHS3 compliance. Functionally equivalent to DF08S-E3/45.
DI108S_T0_00001 (Panjit International Inc.): Active status with ROHS3 compliance. Provides additional sourcing option from alternative manufacturer.

Taiwan Semiconductor Corporation Options:

DBLS106G C1G and DBLS106GHC1G: Both active status with improved reverse leakage characteristics (2 µA vs. 10 µA). DBLS106GHC1G includes automotive-grade qualification (AEC-Q101) for applications requiring automotive compliance.

All listed substitutes maintain the 4-SMD Gull Wing surface mount package and -55°C to 150°C operating temperature range, ensuring PCB layout and thermal design compatibility.

Frequently Asked Questions (FAQ)

Q: Can DF08S-G be directly replaced with DF08S-HF?

A: Yes. DF08S-HF is the active equivalent from the same manufacturer with identical electrical specifications (800V, 1A, 1.1V forward voltage) and package configuration (4-SMD, Gull Wing).

Q: What is the difference between DB106S-HF and DF08S-HF?

A: Both parts are electrically identical (800V, 1A, 1.1V forward voltage) and share the same 4-SMD Gull Wing package. The difference is the package designation code (DBS vs. DFS). Both are functionally interchangeable for this application.

Q: Why do some substitutes show lower reverse leakage current (2 µA vs. 10 µA)?

A: Lower reverse leakage current indicates improved device performance characteristics. Parts with 2 µA leakage (DBLS106G C1G and DBLS106GHC1G) are functionally superior while maintaining all other electrical specifications. This does not affect substitution compatibility.

Q: Is DBLS106GHC1G suitable for automotive applications?

A: DBLS106GHC1G carries AEC-Q101 automotive qualification. Use this part only if your application requires automotive-grade components. For non-automotive applications, other active substitutes are appropriate.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant, matching the compliance status of the original DF08S-G.

Q: What is the moisture sensitivity level for substitute parts?

A: All substitute parts maintain MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Can I use Vishay parts (DF08S-E3/45, DF08SA-E3/45) as direct replacements?

A: Yes. Both Vishay parts maintain identical electrical specifications and 4-SMD Gull Wing package compatibility. They are active status with established supply availability.

Q: What is the difference between DF08S-E3/45 and DF08SA-E3/45?

A: Both parts are electrically identical with the same 800V, 1A, and 1.1V forward voltage specifications. The difference is in the part number designation. Both are functionally equivalent substitutes.

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