ABS8-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The ABS8-G is a single-phase bridge rectifier diode manufactured by Comchip Technology, rated for 800 V peak reverse voltage and 1 A average rectified current. This component is classified as obsolete, indicating it is no longer in active production. Locating functionally equivalent substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this diode specification is required.

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
Current - Reverse Leakage @ Vr	5 µA @ 800 V
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 ABS8-G are qualified based on matching the following critical 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

Parts meeting these specifications are considered parametric equivalents. Current-Reverse Leakage @ Vr values may vary within acceptable ranges (2 µA to 5 µA @ 800 V) without affecting functional compatibility. Packaging format variations (Tape & Reel, Cut Tape, standard packaging) do not affect electrical performance and are noted for procurement purposes only.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Peak Reverse (Max)	Current - Io	Vf (Max) @ If	Reverse Leakage @ Vr	Operating Temperature	Package / Case	RoHS Status
ABS8-G	Comchip Technology	Obsolete	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
ABS8-HF	Comchip Technology	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
ABS8U	SMC Diode Solutions	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
B108S_R2_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 Compliant
DB106S	SMC Diode Solutions	Active	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DBLS106G	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 Compliant
DBLS106GH	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 Compliant
DF08S-E3/77	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 Compliant
DF08S-E3/I	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 Compliant
DF08S1	onsemi	Not For New Designs	800 V	1 A	1.1 V @ 1 A	3 µA @ 800 V	-55°C ~ 150°C	4-SMD, Gull Wing	ROHS3 Compliant
DF08SA-E3/77	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 Compliant

Engineering Selection Recommendations

Primary Recommendation: ABS8-HF

The ABS8-HF from Comchip Technology is the manufacturer-recommended substitute for the obsolete ABS8-G. Both parts share identical electrical specifications and are manufactured by the same supplier. The ABS8-HF maintains active product status, ensuring continued availability and supply chain reliability. This part is ROHS3 compliant and carries the same MSL rating.

Secondary Recommendations for Active Alternatives

The following parts are qualified as parametric equivalents with active product status:

ABS8U (SMC Diode Solutions): Identical electrical and thermal specifications. Available in Tape & Reel packaging.
DB106S (SMC Diode Solutions): Functionally equivalent with highest inventory availability (33,300 pcs). Identical specifications across all critical parameters.
DF08S-E3/77 (Vishay General Semiconductor - Diodes Division): Active status with high inventory (10,300 pcs). Available in Cut Tape & Digi-Reel packaging.
DF08SA-E3/77 (Vishay General Semiconductor - Diodes Division): Active status with 5,100 pcs inventory. Identical specifications to DF08S-E3/77.
B108S_R2_00001 (Panjit International Inc.): Active status with highest inventory level (3,793 pcs). Meets all electrical and thermal requirements.
DBLS106G and DBLS106GH (Taiwan Semiconductor Corporation): Both active with superior reverse leakage characteristics (2 µA vs. 5 µA). DBLS106GH includes AEC-Q101 automotive qualification.

Parts to Avoid for New Designs

DF08S1 (onsemi): Marked as "Not For New Designs" despite meeting electrical specifications. Suitable only for legacy system maintenance.

Compliance Considerations

All recommended substitutes are ROHS3 compliant. DBLS106GH provides additional automotive-grade qualification (AEC-Q101) for applications requiring automotive-level reliability. REACH compliance status varies by manufacturer and should be verified against specific procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly substitute ABS8-G with any of the listed alternatives?

A: Yes, all listed parts meet the critical electrical parameters (800 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage, -55°C to 150°C operating range) and share the same 4-SMD Gull Wing package. Direct substitution is electrically and mechanically compatible.

Q: What is the difference between parts with 5 µA and 2 µA reverse leakage?

A: Both values fall within acceptable operating ranges for this application category. The 2 µA specification (DBLS106G, DBLS106GH) represents superior leakage performance but does not affect functional compatibility. Selection between these options depends on application-specific leakage requirements.

Q: Why is DF08S1 marked "Not For New Designs"?

A: This designation indicates the manufacturer (onsemi) has transitioned this part to legacy status. While it remains electrically compatible and suitable for repair and maintenance of existing systems, it should not be specified for new product development. Active alternatives are preferred for new designs.

Q: What packaging options are available?

A: Substitute parts are available in multiple packaging formats: standard packaging, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel. These packaging variations do not affect electrical performance and are selected based on procurement and assembly requirements.

Q: Is DBLS106GH suitable for automotive applications?

A: Yes. DBLS106GH carries AEC-Q101 automotive qualification and is graded for automotive use. This part is appropriate for automotive and high-reliability applications requiring formal qualification documentation.

Q: How do I choose between multiple active alternatives?

A: Selection criteria include: (1) Product availability and inventory levels, (2) Packaging format compatibility with assembly processes, (3) Compliance requirements (REACH, RoHS), (4) Automotive qualification if required, and (5) Reverse leakage specifications for specific circuit requirements. All listed active parts are electrically interchangeable.

Q: Are there any thermal performance differences between substitutes?

A: All substitutes share the identical operating temperature range (-55°C to 150°C junction temperature). No thermal performance differentiation exists among the listed alternatives.

Q: What is the MSL rating and why does it matter?

A: Most substitutes carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. B108S_R2_00001 is listed as "Not Applicable," indicating it does not require moisture sensitivity classification. Both conditions are acceptable for standard PCB assembly processes.

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