PB310-BP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The PB310-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 1 kV peak reverse voltage with 3 A average rectified current. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The through-hole PB-3 package configuration and standard rectification technology establish the baseline for substitute part evaluation.

Substiute Parts

PB310-BP

Micro Commercial CoIn Stock: 801PB310-BP Datasheet

Current PartRFQ

BR310

GeneSiC SemiconductorIn Stock: 8908BR310 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PB310-BP are identified based on strict electrical and mechanical parameter matching within the single-phase bridge rectifier category. The substitution criteria are:

• Diode Type: Single Phase (mandatory match)
• Technology: Standard (mandatory match)
• Voltage - Peak Reverse (Max): 1 kV (mandatory match)
• Current - Average Rectified (Io): 3 A (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Package Configuration: 4-Square form factor (mandatory match)

The BR310 manufactured by GeneSiC Semiconductor satisfies all mandatory electrical and mechanical parameters. Variations in forward voltage (1 V vs. 1.2 V maximum) and operating temperature range (-65°C ~ 125°C vs. -55°C ~ 125°C) remain within acceptable tolerance for single-phase bridge rectifier applications and do not disqualify the substitute relationship.

Parameter Comparison

Engineering Selection Recommendations

The BR310 is the qualified substitute for the PB310-BP based on electrical parameter equivalence and active product status. The BR310 offers improved availability as an active component from GeneSiC Semiconductor, with 8800 units in stock compared to the obsolete PB310-BP status. Both components maintain RoHS compliance and identical electrical ratings for voltage, current, and leakage specifications.

The BR310 demonstrates superior forward voltage performance (1 V maximum vs. 1.2 V maximum), resulting in lower power dissipation in rectification applications. The extended operating temperature range of the BR310 (-65°C minimum vs. -55°C minimum) provides additional thermal margin for demanding environments.

Physical package compatibility between PB-3 and BR-3 configurations requires mechanical verification during board-level integration, as footprint dimensions may differ despite identical functional form factors.

Frequently Asked Questions (FAQ)

Q: Can BR310 directly replace PB310-BP in existing designs?

A: BR310 satisfies all mandatory electrical parameters for single-phase bridge rectifier applications at 1 kV and 3 A ratings. Physical package compatibility (PB-3 vs. BR-3) must be confirmed against PCB footprint specifications before implementation.

Q: What is the significance of the forward voltage difference between PB310-BP and BR310?

A: The BR310 forward voltage maximum of 1 V at 1.5 A is lower than the PB310-BP specification of 1.2 V at 1.5 A. This difference reduces power dissipation and heat generation during rectification, which is advantageous for thermal management in continuous-duty applications.

Q: Why is product status relevant to part selection?

A: The PB310-BP is classified as obsolete, indicating discontinued manufacturing and limited future availability. The BR310 maintains active product status with established supply channels and ongoing manufacturer support, ensuring long-term component availability for production and field service requirements.

Q: Are there compliance differences between PB310-BP and BR310?

A: Both components maintain RoHS compliance. The PB310-BP carries ROHS3 designation, while BR310 carries standard RoHS designation. Both satisfy environmental and hazardous substance restrictions applicable to electronic component procurement.

Q: What package considerations apply to BR310 substitution?

A: Both components use 4-Square through-hole configurations (PB-3 and BR-3 respectively). Physical lead spacing, hole diameter, and mounting pad dimensions must be verified against design documentation to ensure mechanical compatibility with existing PCB layouts.