BR34 Bridge Rectifier Single Phase 400V 3A Equivalent & Substitute Parts

Part Overview

The BR34 is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 400 V peak reverse voltage and 3 A average rectified current. This component is designed for through-hole mounting applications requiring standard rectification technology. The BR34 maintains Active product status with 18,700 units in current inventory.

Substitute parts become necessary when the primary component reaches end-of-life status, inventory depletion occurs, or design requirements necessitate alternative electrical or thermal characteristics within the allowed parameter range for single-phase bridge rectifiers.

Substiute Parts

BR34

GeneSiC SemiconductorIn Stock: 18801BR34 Datasheet

Current PartRFQ

PB64-BP

Micro Commercial CoIn Stock: 874PB64-BP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BR34 is determined by the following criteria:

Mandatory Matching Parameters:

• Diode Type: Single Phase
• Voltage - Peak Reverse (Max): 400 V
• Mounting Type: Through Hole
• Technology: Standard

Allowable Parameter Variations:

• Current - Average Rectified (Io): Equal to or greater than 3 A
• Voltage - Forward (Vf): Within acceptable forward voltage drop range for rectifier applications
• Current - Reverse Leakage: Equal to or less than specified maximum
• Operating Temperature Range: Must encompass or exceed the -65°C to 125°C requirement
• RoHS and environmental compliance certifications

The PB64-BP qualifies as a substitute part because it maintains identical peak reverse voltage (400 V), single-phase diode type, through-hole mounting configuration, and standard technology classification. The PB64-BP provides higher current capacity (6 A versus 3 A), which is acceptable for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

BR34 Selection Criteria: The BR34 is the primary choice for new designs and applications where GeneSiC Semiconductor component qualification is required. The part maintains Active product status with established supply chain availability. RoHS Compliant certification confirms environmental regulatory compliance.

PB64-BP Selection Criteria: The PB64-BP functions as a substitute part for existing designs or applications where component replacement is necessary due to BR34 unavailability. The PB64-BP carries ROHS3 Compliant status, indicating compliance with current environmental standards. However, the PB64-BP designation as "Not For New Designs" restricts its use to legacy system maintenance and retrofit applications only.

Package Consideration: The BR34 uses BR-3 package designation while the PB64-BP uses PB-6 package designation. Both employ 4-Square through-hole configuration. Physical footprint verification is required before substitution to confirm PCB layout compatibility.

Thermal Operating Range: The PB64-BP provides extended upper temperature capability (150°C versus 125°C), which may be advantageous in high-temperature environments. The BR34 maintains lower minimum operating temperature (-65°C versus -55°C) for cold-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the PB64-BP directly replace the BR34 in existing circuit designs?

A: The PB64-BP is electrically compatible with the BR34 for the specified 400 V, 3 A application. However, physical package differences (BR-3 versus PB-6) require PCB layout verification. The higher current rating (6 A) of the PB64-BP does not create incompatibility for 3 A circuit operation.

Q: What does "Not For New Designs" mean for the PB64-BP?

A: This designation indicates the PB64-BP is in end-of-life status and should not be selected for new product development. The PB64-BP is available for replacement and maintenance of existing systems only.

Q: Are both parts RoHS compliant?

A: Yes. The BR34 is RoHS Compliant. The PB64-BP is ROHS3 Compliant. Both certifications confirm compliance with environmental regulations for hazardous substance restrictions.

Q: What is the significance of the different forward voltage specifications?

A: The BR34 specifies 1 V @ 1.5 A while the PB64-BP specifies 1.1 V @ 3 A. These measurements are taken at different current levels. Both values fall within the normal operating range for standard rectifier diodes and do not prevent substitution.

Q: Does the higher current rating of the PB64-BP (6 A versus 3 A) affect circuit operation?

A: No. Higher current rating indicates greater capacity. For a 3 A application, the PB64-BP operates within its rated limits with additional margin. This does not create circuit incompatibility.

Q: What is the difference between BR-3 and PB-6 package designations?

A: BR-3 and PB-6 are manufacturer-specific package designations for 4-Square through-hole bridge rectifiers. Both use identical mounting configuration. Physical dimensions must be verified against PCB footprint requirements before substitution.

Q: Can the BR34 be used in applications requiring the PB64-BP specifications?

A: The BR34 meets all mandatory electrical parameters for substitution. However, if the application specifically requires the extended upper temperature range (150°C) provided by the PB64-BP, the BR34 maximum rating of 125°C may be insufficient.