MB18S-TP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The MB18S-TP is a single-phase bridge rectifier utilizing Schottky technology, rated for 80 V peak reverse voltage and 1 A average rectified current. Designed for surface mount applications in the MBS-1 package configuration, this component is classified as obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for ongoing production support, design updates, and inventory management.

Substiute Parts

MB18S-TP

Micro Commercial CoIn Stock: 9816MB18S-TP Datasheet

Current PartRFQ

LMB18S-TP

Micro Commercial CoIn Stock: 8335LMB18S-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB18S-TP is determined by the following critical parameters:

• Diode Type: Single Phase bridge rectifier configuration
• Technology: Schottky diode technology
• Voltage Rating: 80 V peak reverse voltage (Vrrm)
• Current Rating: 1 A average rectified current (Io)
• Forward Voltage: 850 mV maximum at rated current
• Mounting: Surface mount technology
• Temperature Range: Operating capability within -55°C to 125°C minimum

The LMB18S-TP meets these core electrical specifications and maintains functional equivalence for direct substitution in applications requiring these parameters.

Parameter Comparison

Engineering Selection Recommendations

The LMB18S-TP serves as a functional equivalent for the obsolete MB18S-TP based on matching electrical specifications: identical voltage and current ratings, equivalent forward voltage characteristics, and shared Schottky technology. Both components maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

The LMB18S-TP offers an extended operating temperature range (-55°C to 150°C versus -55°C to 125°C), providing additional thermal margin in high-temperature applications. Package configuration differences exist between the two parts (4-BESOP for MB18S-TP versus 4-SMD Gull Wing for LMB18S-TP); physical layout verification is required during board redesign.

Selection between these parts depends on application thermal requirements and PCB layout constraints. Both parts carry equivalent regulatory status under REACH and EAR99 classifications.

Frequently Asked Questions (FAQ)

Q: Can the LMB18S-TP directly replace the MB18S-TP in existing designs?

A: Electrical substitution is valid based on matching voltage, current, and forward voltage specifications. Physical package differences (4-BESOP versus 4-SMD Gull Wing) require PCB layout verification before implementation.

Q: What are the key differences between these parts?

A: The primary differences are package configuration and operating temperature range. The LMB18S-TP supports operation to 150°C versus 125°C for the MB18S-TP. Forward voltage is specified at different current levels (500 mA versus 1 A), and reverse leakage current differs at rated voltage.

Q: Are both parts RoHS compliant?

A: Yes, both MB18S-TP and LMB18S-TP are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What packaging formats are available?

A: The MB18S-TP uses TO-269AA, 4-BESOP packaging. The LMB18S-TP is supplied in Tape & Reel (TR) format with 4-SMD Gull Wing package configuration.

Q: Are there any design restrictions for the LMB18S-TP?

A: The LMB18S-TP carries a "Not For New Designs" status, indicating it is suitable for legacy system support and replacement applications but not recommended for new product development.