MB6S Bridge Rectifier Single Phase 600V 500mA Equivalent & Substitute Parts

Part Overview

The MB6S is a single-phase bridge rectifier rated for 600V peak reverse voltage with 500mA average rectified current, packaged in a 4-SOIC surface mount configuration. This component is classified as "Not For New Designs" by the manufacturer onsemi, indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where the original component is no longer readily available or when design flexibility permits alternative sourcing.

Key Parameters

Parameter	Value
Diode Type	Single Phase Bridge Rectifier
Voltage - Peak Reverse (Max)	600 V
Current - Average Rectified (Io)	500 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 500 mA
Current - Reverse Leakage @ Vr	5 µA @ 600 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-269AA, 4-BESOP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MB6S is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

Diode Type: Single Phase Bridge Rectifier
Voltage - Peak Reverse (Max): 600 V (minimum requirement)
Current - Average Rectified (Io): 500 mA (minimum requirement)
Voltage - Forward (Vf) (Max) @ If: 1 V @ 500 mA (maximum allowable forward voltage)
Current - Reverse Leakage @ Vr: 5 µA @ 600 V (maximum allowable leakage)
Operating Temperature Range: -55°C ~ 150°C (TJ)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Package Compatibility: Substitutes must use equivalent surface mount packages (TO-269AA, 4-BESOP, 4-MDI, or MBS-1) with identical pinout and footprint compatibility for direct board-level replacement.

The identified substitute parts meet these criteria with the following classifications:

Parametric Equivalents (identical electrical specifications and package):

MB6S-E3/80 (Vishay General Semiconductor)
MB6S-TP (Micro Commercial Co)
B6S-E3/80 (Vishay General Semiconductor)

Similar Substitute (higher current rating, alternative package):

B6S_R2_00001 (Panjit International Inc.)

Parameter Comparison

Parameter	MB6S (onsemi)	MB6S-E3/80 (Vishay)	MB6S-TP (MCC)	B6S-E3/80 (Vishay)	B6S_R2_00001 (Panjit)
Voltage - Peak Reverse (Max)	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	500 mA	500 mA	500 mA	500 mA	800 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 500 mA	1 V @ 400 mA	1 V @ 400 mA	1 V @ 500 mA	1 V @ 500 mA
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-269AA, 4-BESOP	TO-269AA, 4-BESOP	TO-269AA, 4-BESOP	TO-269AA, 4-BESOP	4-SMD, Gull Wing
Product Status	Not For New Designs	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

First Priority - Direct Parametric Equivalents:

MB6S-E3/80 and MB6S-TP are the preferred substitutes for the MB6S. Both components maintain identical voltage and current ratings, matching forward voltage specifications, and operate across the same temperature range. Both are manufactured by active suppliers (Vishay General Semiconductor and Micro Commercial Co respectively) with ROHS3 compliance and unlimited moisture sensitivity rating. These parts provide direct functional replacement with no circuit redesign required.

B6S-E3/80 (Vishay) is also a parametric equivalent with identical electrical performance and package compatibility, offering an additional sourcing option from an active manufacturer.

Secondary Option - Higher Current Capacity:

B6S_R2_00001 (Panjit International Inc.) provides a higher average rectified current rating of 800mA while maintaining all other critical parameters at or above the MB6S specification. This part uses a 4-MDI package (4-SMD, Gull Wing) rather than the TO-269AA footprint. Selection of this substitute requires verification of PCB footprint compatibility and mechanical clearance. The higher current rating provides design margin for applications operating near the 500mA limit.

Compliance and Availability:

All substitute parts carry ROHS3 compliance and MSL-1 (Unlimited) moisture sensitivity ratings, matching the original MB6S specifications. Inventory availability is confirmed for all listed substitutes, with MB6S-E3/80 offering the highest stock level (65,200 pcs).

Frequently Asked Questions (FAQ)

Q: Can MB6S-E3/80 be used as a direct replacement for MB6S?

A: Yes. MB6S-E3/80 meets all electrical and mechanical requirements for direct substitution. Both components share identical voltage ratings (600V), current ratings (500mA), forward voltage characteristics (1V @ 500mA), and operating temperature range (-55°C to 150°C). The TO-269AA package footprint is identical, enabling direct PCB replacement without circuit modification.

Q: What is the difference between MB6S-TP and MB6S-E3/80?

A: Both parts are parametric equivalents with identical electrical specifications. The primary difference is the manufacturer: MB6S-TP is supplied by Micro Commercial Co, while MB6S-E3/80 is supplied by Vishay General Semiconductor. Both use the same TO-269AA package and meet all performance requirements. Selection between these parts is based on supplier availability and procurement preference.

Q: Why is B6S_R2_00001 rated for 800mA when the MB6S is only 500mA?

A: B6S_R2_00001 is designed with higher current capacity (800mA average rectified current) while maintaining the same 600V voltage rating and forward voltage characteristics. This higher current rating provides additional design margin. However, the 4-MDI package differs from the MB6S TO-269AA package, requiring PCB footprint verification before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (MB6S-E3/80, MB6S-TP, B6S-E3/80, and B6S_R2_00001) carry ROHS3 compliance certification, matching the original MB6S specification.

Q: What does "Not For New Designs" mean for the MB6S?

A: This designation indicates the MB6S has reached end-of-life status and the manufacturer (onsemi) is not recommending it for new product development. For ongoing production support and legacy system maintenance, the active substitute parts listed (MB6S-E3/80, MB6S-TP, B6S-E3/80) provide equivalent functionality from manufacturers actively supporting these components.

Q: Can I use B6S-E3/80 instead of MB6S-E3/80?

A: Yes. B6S-E3/80 is a parametric equivalent with identical electrical specifications and package compatibility. The primary difference is the base product number designation (B6S versus MB6). Both parts meet all substitution criteria and can be used interchangeably from an engineering standpoint.

Q: What should I verify before selecting a substitute part?

A: Confirm the following: (1) PCB footprint compatibility with the selected package type (TO-269AA for MB6S-E3/80, MB6S-TP, and B6S-E3/80; 4-MDI for B6S_R2_00001), (2) supplier availability and lead time, (3) circuit current requirements do not exceed the part's average rectified current rating, (4) operating temperature range matches application requirements, and (5) RoHS compliance status meets your regulatory requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message