MB2S Bridge Rectifier Diode - Equivalent & Substitute Parts

Part Overview

The MB2S is a single-phase bridge rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V peak reverse voltage and 500 mA average rectified current in a surface mount TO-269AA (4-BESOP) package. The main part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts are selected based on matching or exceeding electrical performance within the same package family while maintaining compatibility with existing circuit designs.

Key Parameters

Parameter	MB2S Value
Voltage - Peak Reverse (Max)	200 V
Current - Average Rectified (Io)	500 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 500 mA
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-269AA, 4-BESOP
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitute parts are organized into two categories based on electrical equivalence:

Category 1: Direct Parametric Equivalents (200 V Rating) These parts match the MB2S electrical specifications exactly: 200 V peak reverse voltage, 500 mA average rectified current, 1 V forward voltage drop, and identical operating temperature range. All are single-phase standard technology bridge rectifiers in TO-269AA surface mount packages. These substitutes differ only in packaging format (tape & reel or cut tape) and product status (active vs. obsolete).

Category 2: Higher Voltage Rated Alternatives (400 V and Above) These parts exceed the 200 V requirement and are suitable for applications requiring higher voltage margins or operating in higher voltage environments. They maintain the 500 mA current rating and compatible package formats but provide enhanced voltage performance.

Key Parameters Determining Substitution:

Voltage - Peak Reverse (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 500 mA
Mounting Type: Surface Mount (required)
Package / Case: TO-269AA, 4-BESOP or compatible MBS variants
Diode Type: Single Phase (required)
Technology: Standard (required)

Parameter Comparison

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
MB2S	Vishay General Semiconductor	200 V	500 mA	1 V @ 500 mA	5 µA @ 200 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Obsolete	RoHS non-compliant
B2S-E3/80	Vishay General Semiconductor	200 V	500 mA	1 V @ 500 mA	5 µA @ 200 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Active	ROHS3 Compliant
MB2S-E3/80	Vishay General Semiconductor	200 V	500 mA	1 V @ 400 mA	5 µA @ 200 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Active	ROHS3 Compliant
MB10S	MDD	1 kV	1 A	1.1 V @ 400 mA	5 µA @ 1000 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Active	RoHS Compliant
MB10S-TP	Micro Commercial Co	1 kV	500 mA	1 V @ 400 mA	5 µA @ 1000 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Active	ROHS3 Compliant
MB1S	SMC Diode Solutions	100 V	500 mA	1 V @ 500 mA	5 µA @ 100 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
MB1S-TP	Micro Commercial Co	100 V	500 mA	1 V @ 400 mA	5 µA @ 100 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Not For New Designs	ROHS3 Compliant
MB4S	Diotec Semiconductor	400 V	500 mA	1 V @ 400 mA	5 µA @ 400 V	-50°C ~ 150°C	TO-269AA, 4-BESOP	Active	Not applicable
MB6S	MDD	600 V	500 mA	1 V @ 500 mA	5 µA @ 600 V	-55°C ~ 150°C	4-SMD, Gull Wing	Active	ROHS3 Compliant
MB6S-TP	Micro Commercial Co	600 V	500 mA	1 V @ 400 mA	5 µA @ 600 V	-55°C ~ 150°C	TO-269AA, 4-BESOP	Active	ROHS3 Compliant
MB8S	Fairchild Semiconductor	800 V	500 mA	1 V @ 400 mA	5 µA @ 800 V	-50°C ~ 150°C	TO-269AA, 4-BESOP	Active	Not applicable

Engineering Selection Recommendations

For Direct Replacement (200 V Applications): MB2S-E3/80 is the primary recommended substitute. It is manufactured by Vishay General Semiconductor (same as the original), maintains identical electrical specifications at 200 V and 500 mA, is ROHS3 compliant, and carries active product status with unlimited moisture sensitivity level (MSL 1). B2S-E3/80 provides an alternative from the same manufacturer with identical performance and active status.

For Higher Voltage Margin Applications: MB4S (400 V), MB6S-TP (600 V), and MB8S (800 V) are suitable when circuit design permits higher voltage ratings. These parts maintain 500 mA current capacity and compatible surface mount packages. MB6S-TP and MB8S offer the highest voltage ratings with active product status.

Avoid for New Designs: MB1S-TP is marked "Not For New Designs" and should not be selected for new applications despite meeting some electrical criteria.

Compliance Considerations: Parts with ROHS3 compliance (MB2S-E3/80, B2S-E3/80, MB10S-TP, MB6S-TP) are preferred for applications subject to RoHS regulations. The original MB2S is RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q: Can MB2S be directly replaced with MB2S-E3/80? A: Yes. MB2S-E3/80 is a direct parametric equivalent with identical voltage (200 V) and current (500 mA) ratings, same package (TO-269AA, 4-BESOP), and compatible operating temperature range (-55°C to 150°C). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between B2S-E3/80 and MB2S-E3/80? A: Both are 200 V, 500 mA single-phase bridge rectifiers from Vishay in TO-269AA packages with identical electrical performance. B2S-E3/80 is supplied in tape & reel packaging, while MB2S-E3/80 is supplied in cut tape & Digi-Reel format. Selection depends on packaging requirements for assembly equipment.

Q: Can higher voltage parts like MB4S or MB6S-TP be used instead of MB2S? A: Yes, if circuit design permits. Higher voltage rated parts (400 V, 600 V, 800 V) are backward compatible with 200 V applications and provide additional voltage margin. However, they should only be selected if the application benefits from or requires higher voltage capability, as they may have different forward voltage characteristics or thermal performance.

Q: Why is MB1S-TP not recommended despite meeting some specifications? A: MB1S-TP is rated for only 100 V peak reverse voltage, which is below the 200 V requirement of the MB2S. Additionally, it carries a "Not For New Designs" status, indicating it is being phased out. It is unsuitable for direct replacement.

Q: Are there package compatibility issues between substitute parts? A: Most substitutes use TO-269AA or compatible 4-BESOP packages suitable for the same PCB footprints. However, MB1S uses 4-SMD Gull Wing and MB6S uses 4-SMD Gull Wing packages, which may differ from the original TO-269AA layout. Verify PCB footprint compatibility before selection.

Q: What is the significance of MSL (Moisture Sensitivity Level) ratings? A: MSL 1 (Unlimited) indicates the part has no moisture sensitivity restrictions and can be stored indefinitely without special drying procedures. Parts with MSL 1 are preferred for standard manufacturing environments. MB2S-E3/80, B2S-E3/80, and most active substitutes carry MSL 1 ratings.

Q: How do forward voltage specifications affect circuit performance? A: Forward voltage (Vf) determines voltage drop across the rectifier during conduction. MB2S specifies 1 V @ 500 mA. Most substitutes maintain this specification or specify it at 400 mA. Slight variations in Vf may affect power dissipation and circuit efficiency but remain within acceptable ranges for standard bridge rectifier applications.

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