MDB10SV Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MDB10SV is a single-phase bridge rectifier diode manufactured by onsemi, rated for 1 kV peak reverse voltage and 1.2 A average rectified current in a 4-MicroDIP/SMD surface mount package. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and inventory options.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	1 kV
Current - Average Rectified (Io)	1.2 A
Voltage - Forward (Vf) (Max) @ If	1.015 V @ 1.2 A
Current - Reverse Leakage @ Vr	10 µA @ 1000 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Supplier Device Package	4-MicroDIP/SMD
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitute parts for the MDB10SV are qualified based on the following electrical and mechanical parameters:

Voltage Rating: Peak reverse voltage must be ≥ 1 kV
Current Rating: Average rectified current must be ≥ 1 A (MDB10SV rated at 1.2 A)
Forward Voltage: Maximum forward voltage drop must be compatible with circuit design
Reverse Leakage: Maximum reverse leakage current at rated voltage
Temperature Range: Operating temperature range must encompass -55°C to 150°C
Package Type: 4-SMD, Gull Wing surface mount configuration
Diode Configuration: Single-phase bridge rectifier topology

The MDB10S and MDB10SS meet these criteria with equivalent or superior electrical characteristics and identical package specifications.

Parameter Comparison

Parameter	MDB10SV (Main)	MDB10S (Substitute)	MDB10SS (Substitute)
Manufacturer	onsemi	onsemi	Fairchild Semiconductor
Voltage - Peak Reverse (Max)	1 kV	1 kV	1 kV
Current - Average Rectified (Io)	1.2 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.015 V @ 1.2 A	1.1 V @ 1 A	1 V @ 1 A
Current - Reverse Leakage @ Vr	10 µA @ 1000 V	10 µA @ 1000 V	10 µA @ 1 V
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Supplier Device Package	4-MicroDIP/SMD	4-MicroDIP/SMD	4-MicroDIP/SMD
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Product Status	Obsolete	Not For New Designs	Obsolete

Engineering Selection Recommendations

MDB10S (onsemi): This substitute maintains onsemi manufacturer continuity and is rated for 1 kV / 1 A operation. The current rating of 1 A is lower than the MDB10SV (1.2 A), requiring circuit verification for applications demanding the full 1.2 A specification. The forward voltage of 1.1 V @ 1 A is marginally higher than the MDB10SV. MDB10S is classified as "Not For New Designs," indicating limited long-term availability. RoHS3 compliance is confirmed.

MDB10SS (Fairchild Semiconductor): This substitute provides equivalent 1 kV / 1 A electrical performance with a lower forward voltage of 1 V @ 1 A. The reverse leakage specification differs (10 µA @ 1 V versus 10 µA @ 1000 V), which may affect high-voltage leakage behavior. MDB10SS is obsolete and available only in bulk packaging. RoHS status is not applicable.

Selection between MDB10S and MDB10SS depends on current rating requirements, forward voltage tolerance, and compliance certifications needed for the application.

Frequently Asked Questions (FAQ)

Q: Can MDB10S be used as a direct replacement for MDB10SV?

A: MDB10S is electrically compatible for applications operating at or below 1 A average rectified current. The MDB10SV is rated for 1.2 A; applications requiring this full current specification must be re-evaluated with MDB10S. Both parts share identical package specifications (4-MicroDIP/SMD, Gull Wing) and temperature range (-55°C to 150°C).

Q: What is the difference in forward voltage between these parts?

A: MDB10SV exhibits 1.015 V forward voltage at 1.2 A, while MDB10S shows 1.1 V at 1 A, and MDB10SS shows 1 V at 1 A. Forward voltage differences affect power dissipation and thermal performance in rectifier circuits. Circuit design must account for these variations.

Q: Are there packaging differences between the substitute parts?

A: All three parts use identical 4-SMD, Gull Wing surface mount packages (4-MicroDIP/SMD). Packaging compatibility is confirmed for PCB assembly without modification.

Q: What compliance certifications apply to these substitutes?

A: MDB10S is RoHS3 compliant. MDB10SS RoHS status is not applicable. Both parts are REACH unaffected and classified under ECCN EAR99 and HTSUS 8541.10.0080.

Q: Why are MDB10SV and MDB10SS marked as obsolete?

A: Obsolete status indicates these parts are no longer manufactured and available inventory is limited. MDB10S, classified as "Not For New Designs," represents a transitional status with restricted availability. Long-term sourcing should prioritize current production alternatives.

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