MB158W-BP Bridge Rectifier Single Phase 800V 15A Equivalent & Substitute Parts

Part Overview

The MB158W-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 800V peak reverse voltage and 15A average rectified current. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are used in industrial power supply applications, motor control circuits, and AC-to-DC conversion systems where single-phase rectification is required.

Substiute Parts

MB158W-BP

Micro Commercial CoIn Stock: 969MB158W-BP Datasheet

Current PartRFQ

KBPC1508W-G

Comchip TechnologyIn Stock: 1126KBPC1508W-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB158W-BP is determined by strict equivalence across the following critical parameters:

• Diode Type: Single Phase (required match)
• Technology: Standard (required match)
• Voltage - Peak Reverse (Max): 800 V (required match)
• Current - Average Rectified (Io): 15 A (required match)
• Mounting Type: Through Hole (required match)
• Package / Case: 4-Square configuration (required match)

The KBPC1508W-G manufactured by Comchip Technology meets all substitution criteria. Both parts share identical voltage and current ratings, single-phase rectification topology, standard technology classification, through-hole mounting, and 4-square package configuration. The substitute part maintains full electrical and mechanical compatibility for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The KBPC1508W-G is a direct functional equivalent to the obsolete MB158W-BP. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The substitute part is currently in active production status with confirmed inventory availability (1043 pcs), ensuring supply chain continuity.

The KBPC1508W-G exhibits a lower forward voltage drop (1.1 V versus 1.2 V at 7.5 A), which represents improved efficiency characteristics. The extended operating temperature range of the substitute part (-55°C ~ 150°C versus -55°C ~ 125°C) provides additional thermal margin for demanding applications. Both parts maintain identical reverse leakage current specifications and moisture sensitivity ratings.

For applications currently using the MB158W-BP, the KBPC1508W-G can be selected as a direct replacement without circuit redesign. The 4-square through-hole package configuration is mechanically compatible, and electrical performance is equivalent or superior across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the KBPC1508W-G replace the MB158W-BP in existing designs?

A: Yes. Both parts are single-phase bridge rectifiers with identical 800V peak reverse voltage and 15A average rectified current ratings. The through-hole 4-square package configuration is mechanically compatible. No circuit modifications are required.

Q: What are the key differences between these parts?

A: The KBPC1508W-G has a lower forward voltage drop (1.1 V versus 1.2 V at 7.5 A) and an extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C). The substitute part is in active production, whereas the MB158W-BP is obsolete.

Q: Are both parts RoHS compliant?

A: Yes. Both the MB158W-BP and KBPC1508W-G are ROHS3 compliant and REACH unaffected.

Q: What is the package difference between MB-35W and KBPC-W?

A: Both designations refer to 4-square through-hole package configurations. The different package names reflect manufacturer-specific nomenclature but represent mechanically and electrically equivalent form factors suitable for direct PCB mounting replacement.

Q: Is the KBPC1508W-G available in stock?

A: Yes. The KBPC1508W-G is in active production status with 1043 pcs confirmed new original inventory available.