MB22S-TP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MB22S-TP is a single-phase Schottky bridge rectifier manufactured by Micro Commercial Co, rated for 20 V peak reverse voltage and 2 A average rectified current. Designed for surface mount applications in the MBS-1 package, this component is classified as obsolete. Due to its obsolete status, identifying functionally compatible substitute parts is essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

MB22S-TP

Micro Commercial CoIn Stock: 735MB22S-TP Datasheet

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LMB24S-TP

Micro Commercial CoIn Stock: 2972LMB24S-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB22S-TP is determined by the following critical electrical and mechanical parameters:

• Diode Type & Technology: Single-phase Schottky bridge rectifier architecture
• Current Rating: 2 A average rectified current (Io)
• Voltage Rating: Peak reverse voltage capability must equal or exceed 20 V
• Forward Voltage Characteristics: Maximum forward voltage drop at rated current
• Reverse Leakage: Maximum reverse leakage current at rated voltage
• Operating Temperature Range: Functional temperature limits
• Mounting & Package: Surface mount configuration with compatible footprint
• Compliance: RoHS3 compliance and MSL rating

The LMB24S-TP qualifies as a substitute based on matching diode type, technology, current rating, and mounting method. While the LMB24S-TP provides higher peak reverse voltage (40 V vs. 20 V), this represents an uprated capability suitable for applications requiring the MB22S-TP's electrical performance envelope.

Parameter Comparison

Engineering Selection Recommendations

The LMB24S-TP is an active-status substitute for the obsolete MB22S-TP. Both components are manufactured by Micro Commercial Co and maintain ROHS3 compliance with MSL 1 ratings, ensuring regulatory and environmental compatibility.

The LMB24S-TP provides higher peak reverse voltage (40 V) compared to the MB22S-TP (20 V), making it suitable for applications where the original 20 V rating is sufficient. The current rating remains constant at 2 A, preserving load-handling capability.

Package differences exist: the MB22S-TP uses TO-269AA, 4-BESOP while the LMB24S-TP uses 4-SMD, Gull Wing. PCB layout and footprint verification is required prior to implementation.

The LMB24S-TP operates within a maximum temperature range of -55°C to 125°C, compared to the MB22S-TP's -55°C to 150°C. Applications requiring operation above 125°C must retain the original MB22S-TP or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the LMB24S-TP directly replace the MB22S-TP without circuit modification?

A: Electrical substitution is valid based on matching diode type, technology, current rating, and voltage capability. However, package differences (TO-269AA, 4-BESOP vs. 4-SMD, Gull Wing) require PCB footprint redesign and layout verification.

Q: What is the significance of the higher 40 V rating on the LMB24S-TP?

A: The LMB24S-TP's 40 V peak reverse voltage exceeds the MB22S-TP's 20 V specification. This uprated capability provides additional voltage margin and is compatible with applications designed for 20 V operation.

Q: Are there temperature range limitations when substituting with the LMB24S-TP?

A: Yes. The LMB24S-TP maximum operating temperature is 125°C (TJ), while the MB22S-TP operates to 150°C (TJ). Applications requiring sustained operation above 125°C must use the original MB22S-TP or identify alternative components rated for higher temperatures.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MB22S-TP and LMB24S-TP are ROHS3 compliant with MSL 1 (Unlimited) ratings, ensuring equivalent regulatory and environmental compliance.

Q: What forward voltage characteristics should be considered during substitution?

A: The MB22S-TP specifies 500 mV maximum forward voltage at 2 A, while the LMB24S-TP specifies 500 mV maximum at 1 A. Forward voltage performance at the full 2 A operating point requires verification against the LMB24S-TP datasheet.