ABS8U Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The ABS8U is a single-phase bridge rectifier manufactured by SMC Diode Solutions, rated for 800 V peak reverse voltage and 1 A average rectified current. This surface mount diode operates across a temperature range of -55°C to 150°C and is packaged in a 4-SMD, Gull Wing configuration. The part is currently active and ROHS3 compliant.

Substitute parts are necessary when the primary part reaches end-of-life status, inventory constraints occur, or when design requirements allow for alternative manufacturers meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Diode Type	Single Phase
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

Substitute Part Grouping Explanation

Substitution eligibility for the ABS8U is determined by strict parametric matching across the following criteria:

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 meet these core electrical and mechanical parameters. Variations in Current - Reverse Leakage @ Vr, Moisture Sensitivity Level, and product status are noted but do not disqualify substitution eligibility when primary parameters align.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status	RoHS Status
ABS8U	SMC Diode Solutions	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
B108S_R2_00001	Panjit International Inc.	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
DBLS106G	Taiwan Semiconductor Corporation	800 V	1 A	1.1 V @ 1 A	2 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
DBLS106GH	Taiwan Semiconductor Corporation	800 V	1 A	1.1 V @ 1 A	2 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
DF08S-E3/77	Vishay General Semiconductor - Diodes Division	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
DF08S1	onsemi	800 V	1 A	1.1 V @ 1 A	3 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Not For New Designs	ROHS3 Compliant
DF08SA-E3/77	Vishay General Semiconductor - Diodes Division	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
DI108S_R2_00001	Panjit International Inc.	800 V	1 A	1.1 V @ 1 A	5 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Active	ROHS3 Compliant
MDB8S	onsemi	800 V	1 A	1.1 V @ 1 A	10 µA @ 800 V	-55°C ~ 150°C (TJ)	4-SMD, Gull Wing	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical requirements of the ABS8U. Selection should prioritize parts with Active product status for new designs. The following considerations apply:

Active Status Parts (Recommended for New Designs): B108S_R2_00001, DBLS106G, DBLS106GH, DF08S-E3/77, DF08SA-E3/77, and DI108S_R2_00001 are all designated as Active and suitable for new design implementations.

Not For New Designs Status: DF08S1 and MDB8S carry "Not For New Designs" status and should be used only for legacy system maintenance or repair applications where the original part specification must be maintained.

Compliance Considerations: All substitute parts are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications as the ABS8U, ensuring regulatory equivalence.

Leakage Current Variations: Current - Reverse Leakage @ Vr ranges from 2 µA to 10 µA across the substitute list. DBLS106G and DBLS106GH offer the lowest leakage at 2 µA, while MDB8S exhibits the highest at 10 µA. These variations remain within acceptable parameters for standard bridge rectifier applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the ABS8U with any of the listed parts without circuit modification?

A: Yes. All listed substitute parts meet the identical core electrical specifications: 800 V peak reverse voltage, 1 A average rectified current, 1.1 V forward voltage at 1 A, and -55°C to 150°C operating temperature range. The 4-SMD, Gull Wing package ensures mechanical compatibility with existing PCB layouts.

Q: What is the difference between Active and "Not For New Designs" status parts?

A: Active status parts (B108S_R2_00001, DBLS106G, DBLS106GH, DF08S-E3/77, DF08SA-E3/77, DI108S_R2_00001) are currently manufactured and supported by their respective suppliers. Parts marked "Not For New Designs" (DF08S1, MDB8S) are legacy products suitable only for maintaining existing systems or repair applications.

Q: Does the variation in reverse leakage current affect substitution eligibility?

A: No. Reverse leakage current variations (2 µA to 10 µA @ 800 V) do not disqualify substitution. All values remain within acceptable operating parameters for single-phase bridge rectifier applications. Selection based on leakage performance is application-specific and not a substitution barrier.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance status, matching the ABS8U regulatory classification.

Q: Which substitute part offers the best reverse leakage performance?

A: DBLS106G and DBLS106GH, both manufactured by Taiwan Semiconductor Corporation, offer the lowest reverse leakage current at 2 µA @ 800 V. Both are Active status parts suitable for new designs.

Q: Can I use DBLS106GH in automotive applications?

A: DBLS106GH carries AEC-Q101 automotive qualification. If your application requires automotive-grade components, this part meets that specification. The standard ABS8U does not carry automotive qualification.

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