PB38-BP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The PB38-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 800 V peak reverse voltage with 3 A average rectified current. This component is designed for Through Hole mounting in the PB-3 package configuration. The PB38-BP is classified as Obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement.

Substiute Parts

PB38-BP

Micro Commercial CoIn Stock: 757PB38-BP Datasheet

Current PartRFQ

BR38

GeneSiC SemiconductorIn Stock: 18991BR38 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PB38-BP are identified based on electrical and mechanical parameter equivalence within the single-phase bridge rectifier category. The BR38 qualifies as a direct substitute when the following criteria are met:

• Diode Type: Single Phase (identical)
• Technology: Standard (identical)
• Voltage - Peak Reverse (Max): 800 V (identical)
• Current - Average Rectified (Io): 3 A (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: 4-Square configuration (compatible mechanical footprint)

The BR38 maintains electrical performance within the specified parameters while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The BR38 manufactured by GeneSiC Semiconductor is the qualified substitute for the obsolete PB38-BP. Selection of the BR38 is supported by the following factors:

• Electrical equivalence across all critical parameters: peak reverse voltage (800 V), average rectified current (3 A), and reverse leakage current (10 µA @ 800 V)
• Mechanical compatibility: identical 4-Square Through Hole package configuration
• Product status: BR38 is Active, ensuring long-term availability and supply chain continuity
• Compliance: both parts maintain RoHS compliance; BR38 carries RoHS Compliant certification
• Performance advantages: BR38 exhibits lower forward voltage drop (1 V vs. 1.2 V @ 1.5 A) and extended operating temperature range (-65°C to 125°C vs. -55°C to 125°C)
• Inventory availability: BR38 stock levels (18,900 Pcs) support immediate procurement

Frequently Asked Questions (FAQ)

Q: Can the BR38 be used as a direct replacement for the PB38-BP in existing designs?

A: Yes. The BR38 meets all electrical and mechanical substitution criteria. Both parts are single-phase bridge rectifiers with identical voltage and current ratings, Through Hole mounting, and 4-Square package configuration. The BR38 offers equivalent or superior performance characteristics.

Q: What are the key differences between the PB38-BP and BR38?

A: The primary differences are product status (PB38-BP is Obsolete; BR38 is Active), forward voltage drop (BR38 is lower at 1 V vs. 1.2 V), and operating temperature range (BR38 extends to -65°C). Both parts maintain identical peak reverse voltage (800 V) and average rectified current (3 A) ratings.

Q: Are there any package compatibility concerns when substituting BR38 for PB38-BP?

A: No. Both parts use 4-Square Through Hole packages (PB-3 and BR-3 respectively). The mechanical footprint and pin configuration are compatible for PCB mounting and circuit integration.

Q: Does the BR38 maintain the same compliance certifications as the PB38-BP?

A: Both parts are RoHS compliant. The PB38-BP carries ROHS3 Compliant certification, while the BR38 carries RoHS Compliant certification. Both meet regulatory requirements for restricted substance compliance.

Q: Why is the PB38-BP classified as Obsolete?

A: Obsolete status indicates the part is no longer in active production. The BR38 serves as the current-generation equivalent, offering improved availability and long-term supply chain support.