MDB10S Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MDB10S is a single-phase bridge rectifier diode manufactured by onsemi, rated for 1 kV peak reverse voltage and 1 A average rectified current in a 4-MicroDIP surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying parametrically equivalent substitute parts is necessary for ongoing production support, legacy system maintenance, and design continuity where this rectifier topology is required.

Key Parameters

Parameter	Value
Diode Type	Single Phase Bridge Rectifier
Voltage - Peak Reverse (Max)	1 kV
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Operating Temperature Range	-55°C to 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

Substitution of the MDB10S is determined by strict equivalence across the following critical parameters:

Voltage Rating: Peak reverse voltage must equal 1 kV
Current Rating: Average rectified current must equal 1 A
Forward Voltage: Maximum forward voltage at rated current must not exceed 1.1 V @ 1 A
Temperature Range: Operating temperature range must span -55°C to 150°C
Package Type: Surface mount, 4-SMD gull wing configuration
Diode Configuration: Single-phase bridge rectifier topology
Compliance: RoHS3 compliance and MSL 1 rating

All substitute parts listed below meet these electrical and mechanical specifications. Variations in reverse leakage current, package designations (ABS, DBS, DBLS, DFS, 4-SDIP, 4-SOPA, 4-MDI), and manufacturer-specific product status do not affect functional substitutability within the defined parameter envelope.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Ir @ Vr	Temp Range	Package	Product Status	RoHS3
MDB10S	onsemi	1 kV	1 A	1.1 V @ 1 A	10 µA @ 1000 V	-55°C to 150°C	4-MicroDIP/SMD	Not For New Designs	Yes
DF10S1	Fairchild Semiconductor	1 kV	1 A	1.1 V @ 1 A	3 µA @ 1 V	-55°C to 150°C	4-SDIP	Active	Yes
ABS10-HF	Comchip Technology	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C to 150°C	ABS	Active	Yes
ABS10A-13	Diodes Incorporated	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C to 150°C	4-SOPA	Active	Yes
ABS10U	SMC Diode Solutions	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C to 150°C	ABS	Active	Yes
B1010S_R2_00001	Panjit International Inc.	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C to 150°C	4-MDI	Active	Yes
DB107S	MDD	1 kV	1 A	1.1 V @ 1 A	10 µA @ 1000 V	-55°C to 150°C	DBS	Active	Yes
DBLS107G	Taiwan Semiconductor Corporation	1 kV	1 A	1.1 V @ 1.5 A	2 µA @ 1000 V	-55°C to 150°C	DBLS	Active	Yes
DBLS107GH	Taiwan Semiconductor Corporation	1 kV	1 A	1.1 V @ 1 A	2 µA @ 1000 V	-55°C to 150°C	DBLS	Active	Yes
DF10S-E3/77	Vishay General Semiconductor - Diodes Division	1 kV	1 A	1.1 V @ 1 A	5 µA @ 1000 V	-55°C to 150°C	DFS	Active	Yes

Engineering Selection Recommendations

All listed substitute parts satisfy the electrical and mechanical requirements for direct replacement of the MDB10S. Selection among these alternatives should be based on the following factors:

Product Status: All substitute parts carry Active product status, ensuring long-term availability and manufacturing support. The MDB10S is designated "Not For New Designs," making substitution necessary for ongoing production.

Compliance and Certifications: All substitute parts are RoHS3 compliant with MSL 1 rating, matching the MDB10S environmental and reliability classification. DBLS107GH includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability.

Reverse Leakage Characteristics: Substitute parts exhibit reverse leakage current ranging from 2 µA to 10 µA at rated voltage. Lower leakage (DBLS107G, DBLS107GH at 2 µA) may provide improved performance in high-impedance or precision applications. Standard leakage (5–10 µA) is suitable for general rectification applications.

Package Compatibility: Physical package dimensions vary across substitute part designations (4-SDIP, ABS, 4-SOPA, 4-MDI, DBS, DBLS, DFS). PCB layout and footprint compatibility must be verified before selection. All packages maintain 4-SMD gull wing surface mount configuration.

Inventory and Lead Time: Substitute availability varies by manufacturer and distributor. DB107S (MDD) and DF10S-E3/77 (Vishay) show highest inventory levels, supporting rapid procurement for production requirements.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts replace the MDB10S directly?

A: Yes. All listed parts meet the critical electrical specifications: 1 kV peak reverse voltage, 1 A average rectified current, and 1.1 V maximum forward voltage at rated current. Physical package dimensions differ, requiring PCB footprint verification before implementation.

Q: What is the difference between the various package designations (ABS, DBS, DBLS, DFS)?

A: These are manufacturer-specific package designations for functionally equivalent 4-SMD surface mount bridge rectifier configurations. All maintain gull wing lead geometry and identical electrical performance within the specified parameter envelope. Package selection depends on PCB design compatibility and manufacturer availability.

Q: Why do some parts show different reverse leakage current values?

A: Reverse leakage current variation (2–10 µA at rated voltage) reflects manufacturing process differences among suppliers. All values remain within acceptable limits for standard rectification applications. Lower leakage parts (2 µA) may be preferred for precision analog circuits or high-impedance applications.

Q: Is DBLS107GH suitable for automotive applications?

A: DBLS107GH carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. Other substitute parts lack this certification and should not be used in automotive designs requiring AEC-Q101 compliance.

Q: What is the significance of the "Not For New Designs" status on the MDB10S?

A: This designation indicates the MDB10S has reached end-of-life. Manufacturers no longer recommend it for new product designs. Substitution with Active-status parts ensures design continuity and long-term supply chain reliability for legacy system support and ongoing production.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level), matching the environmental and regulatory classification of the MDB10S.

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