ABS8 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The ABS8 is a single-phase bridge rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800 V peak reverse voltage and 800 mA average rectified current. This component is designed for surface mount applications in 4-SMD, Gull Wing packaging and is currently in active production status with 42,400 units in stock.

Bridge rectifier diodes are essential components in power conversion circuits, converting alternating current to direct current. Substitute parts become necessary when original inventory is depleted, when alternative manufacturers are required for supply chain diversification, or when design specifications permit operation with equivalent electrical characteristics within defined tolerance ranges.

Substiute Parts

ABS8

Taiwan Semiconductor CorporationIn Stock: 42478ABS8 Datasheet

Current PartRFQ

ABS8

MDDIn Stock: 42455ABS8 Datasheet

Parametric EquivalentRFQ

ABS8H

Taiwan Semiconductor CorporationIn Stock: 5803ABS8H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ABS8 bridge rectifier is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - Peak Reverse (Max): 800 V
• Diode Type: Single Phase
• Technology: Standard
• Mounting Type: Surface Mount
• Package / Case: 4-SMD, Gull Wing
• Operating Temperature Range: -55°C to 150°C (TJ)

Current Rating Compatibility:

• Current - Average Rectified (Io): Substitute must meet or exceed 800 mA

Electrical Performance Parameters:

• Voltage - Forward (Vf) (Max) @ If: 950 mV @ 400 mA
• Current - Reverse Leakage @ Vr: 10 µA @ 800 V

Substitute parts are grouped into two categories based on these criteria: direct parametric equivalents from alternative manufacturers and qualified variants with enhanced specifications or automotive-grade certifications.

Parameter Comparison

Engineering Selection Recommendations

ABS8 (MDD Manufacturer)

The MDD ABS8 shares identical voltage and temperature specifications with the Taiwan Semiconductor Corporation ABS8. However, the MDD variant specifies a Current - Average Rectified (Io) of 41 mA, which falls significantly below the 800 mA requirement of the original part. This substitute is not suitable for direct replacement in applications requiring the full 800 mA current rating. The MDD ABS8 is restricted to applications with substantially lower current demands.

ABS8H (Taiwan Semiconductor Corporation)

The ABS8H is a direct parametric equivalent to the ABS8 across all critical electrical specifications: 800 V peak reverse voltage, 800 mA average rectified current, 950 mV forward voltage at 400 mA, and 10 µA reverse leakage current. Both components operate across the identical temperature range of -55°C to 150°C. The ABS8H carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications, providing enhanced reliability assurance for demanding environments. All regulatory compliance parameters—RoHS3, REACH Unaffected, and MSL 1—are identical. The ABS8H is a suitable substitute where automotive-grade components are acceptable or required.

Frequently Asked Questions (FAQ)

Q: Can the MDD ABS8 replace the Taiwan Semiconductor Corporation ABS8 in my application?

A: The MDD ABS8 cannot serve as a direct replacement. While both components share the same 800 V peak reverse voltage and operating temperature range, the MDD variant is rated for only 41 mA average rectified current, compared to the 800 mA specification of the original ABS8. Substitution is only permissible if your application circuit operates at or below 41 mA.

Q: What is the difference between the ABS8 and ABS8H?

A: The ABS8 and ABS8H are electrically identical across all specified parameters: 800 V peak reverse voltage, 800 mA average rectified current, 950 mV forward voltage, and 10 µA reverse leakage current. The primary distinction is that the ABS8H carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications. Both components use identical 4-SMD, Gull Wing packaging and comply with RoHS3 and REACH requirements.

Q: Are the ABS8 and ABS8H pin-compatible?

A: Yes. Both components use the 4-SMD, Gull Wing package configuration, ensuring mechanical and electrical compatibility at the board level. No layout modifications are required when substituting between these two parts.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. The ABS8, ABS8 (MDD), and ABS8H all carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.

Q: Which substitute part should I select for automotive applications?

A: The ABS8H is the appropriate selection for automotive applications. It carries AEC-Q101 qualification, which certifies compliance with automotive reliability and quality standards. The standard ABS8 and MDD ABS8 lack this automotive-grade designation.

Q: Are there any regulatory compliance differences between the substitute parts?

A: No. All three parts—ABS8 (Taiwan Semiconductor), ABS8 (MDD), and ABS8H—are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.