MB252W-BP Bridge Rectifier Single Phase 200V 25A Equivalent & Substitute Parts

Part Overview

The MB252W-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 200V peak reverse voltage and 25A average rectified current in a through-hole 4-Square MB-35W package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The MB252W-BP remains in stock inventory (846 pcs), but active alternatives ensure long-term component availability and supply chain flexibility.

Substiute Parts

MB252W-BP

Micro Commercial CoIn Stock: 881MB252W-BP Datasheet

Current PartRFQ

KBPC2502W-G

Comchip TechnologyIn Stock: 1128KBPC2502W-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MB252W-BP is based on electrical and mechanical parameter equivalence within the single-phase bridge rectifier category. The KBPC2502W-G qualifies as a direct substitute based on the following criteria:

• Identical diode type (single phase) and technology (standard)
• Matching voltage rating (200V peak reverse)
• Matching current rating (25A average rectified)
• Identical reverse leakage specification (10 µA @ 200 V)
• Compatible through-hole mounting configuration
• Identical package form factor (4-Square)
• Equivalent RoHS3 compliance and MSL rating

The forward voltage specification differs slightly (1.1V vs 1.2V @ 12.5A), which represents improved performance characteristics. The operating temperature range of the substitute extends to 150°C versus 125°C for the original part, providing enhanced thermal capability.

Parameter Comparison

Engineering Selection Recommendations

The KBPC2502W-G is the qualified substitute for the obsolete MB252W-BP. Selection of the KBPC2502W-G is supported by:

• Active product status ensuring ongoing availability and supply chain continuity
• Electrical parameter equivalence across all critical specifications (voltage, current, leakage)
• ROHS3 compliance matching the original part
• Extended operating temperature range (-55°C to 150°C) providing thermal margin beyond the original specification
• Identical through-hole mounting and 4-Square package form factor, enabling direct board-level replacement
• Equivalent MSL rating (1 - Unlimited) for storage and handling

The lower forward voltage of the KBPC2502W-G (1.1V vs 1.2V @ 12.5A) represents a performance improvement that reduces power dissipation in the rectifier circuit.

Frequently Asked Questions (FAQ)

Q: Can the KBPC2502W-G replace the MB252W-BP in existing designs?

A: Yes. The KBPC2502W-G meets all electrical and mechanical substitution criteria. Both parts share identical voltage ratings (200V), current ratings (25A), reverse leakage specifications (10 µA @ 200V), and through-hole 4-Square package configuration. Direct board-level replacement is supported.

Q: What is the difference in forward voltage between these parts?

A: The MB252W-BP specifies 1.2V forward voltage at 12.5A, while the KBPC2502W-G specifies 1.1V at the same current. This 0.1V difference represents improved performance in the substitute part, resulting in lower power dissipation during rectification.

Q: Are the package dimensions identical?

A: Both parts use 4-Square through-hole packages (MB-35W for the original, KBPC-W for the substitute). The form factors are mechanically compatible for PCB mounting.

Q: Why is the MB252W-BP classified as obsolete?

A: The MB252W-BP is listed as obsolete by the manufacturer. The KBPC2502W-G is an active product from Comchip Technology, ensuring continued availability and manufacturing support.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MB252W-BP and KBPC2502W-G are ROHS3 compliant with MSL rating of 1 (Unlimited). Compliance certifications are equivalent.

Q: What is the operating temperature advantage of the KBPC2502W-G?

A: The KBPC2502W-G operates across -55°C to 150°C, compared to -55°C to 125°C for the MB252W-BP. The 25°C extended upper temperature range provides additional thermal margin in high-temperature applications.