BR305 Bridge Rectifier Single Phase 50V 3A Equivalent & Substitute Parts

Part Overview

The BR305 is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 50V peak reverse voltage and 3A average rectified current. This component is classified as Active product status and is RoHS Compliant. Bridge rectifiers serve as essential components in AC-to-DC conversion applications, providing full-wave rectification in power supply circuits. Substitute parts may be required due to inventory constraints, supply chain discontinuities, or application-specific performance requirements within the allowed electrical and mechanical parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Peak Reverse (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1.5 A	V @ A
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Operating Temperature Range	-65 to 125	°C (TJ)
Mounting Type	Through Hole
Package / Case	4-Square, BR-3
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitution of the BR305 is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Voltage - Peak Reverse (Max): 50 V
Diode Type: Single Phase
Technology: Standard
Mounting Type: Through Hole
Package / Case: 4-Square configuration

Allowable Parameter Variations:

Current - Average Rectified (Io): Substitute parts may have equal or higher current ratings, provided the application circuit design accommodates the increased capacity
Voltage - Forward (Vf): Substitute parts may have forward voltage within standard rectifier tolerances
Current - Reverse Leakage: Substitute parts must maintain leakage specifications at rated voltage
Operating Temperature Range: Substitute parts may have extended or different temperature ranges

The PB605-BP qualifies as a substitute based on matching voltage rating (50V), diode type (Single Phase), technology (Standard), mounting type (Through Hole), and package configuration (4-Square, PB-6). The PB605-BP provides higher current capacity (6A versus 3A), which is acceptable for applications requiring equal or lower current draw.

Parameter Comparison

Parameter	BR305 (GeneSiC)	PB605-BP (Micro Commercial Co)	Compatibility Notes
Voltage - Peak Reverse (Max)	50 V	50 V	Matched
Current - Average Rectified (Io)	3 A	6 A	Substitute rated higher; acceptable for equal or lower current applications
Voltage - Forward (Vf) (Max) @ If	1 V @ 1.5 A	1.1 V @ 3 A	Within standard rectifier forward voltage tolerance
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 50 V	Matched
Operating Temperature Range	-65°C to 125°C (TJ)	-55°C to 150°C (TJ)	Substitute has extended upper temperature limit
Mounting Type	Through Hole	Through Hole	Matched
Package / Case	4-Square, BR-3	4-Square, PB-6	Both 4-Square through-hole configuration; physical dimensions may vary
Diode Type	Single Phase	Single Phase	Matched
Technology	Standard	Standard	Matched

Engineering Selection Recommendations

BR305 (GeneSiC Semiconductor):

Product Status: Active
RoHS Status: RoHS Compliant
Moisture Sensitivity Level: 1 (Unlimited)
ECCN: EAR99
Recommended for new designs requiring active product support and full compliance documentation

PB605-BP (Micro Commercial Co):

Product Status: Not For New Designs
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Status: REACH Unaffected
ECCN: EAR99
Suitable for legacy system maintenance, repair, or replacement applications where new design qualification is not required

Selection between BR305 and PB605-BP depends on application context. The BR305 is the primary choice for new designs. The PB605-BP serves as a functional substitute for existing installations where the higher current rating (6A) and extended temperature range (-55°C to 150°C) do not conflict with circuit design constraints.

Frequently Asked Questions (FAQ)

Q: Can PB605-BP replace BR305 in all applications? A: The PB605-BP is electrically compatible with BR305 applications that draw 3A or less at 50V peak reverse voltage. The higher current rating of PB605-BP (6A) does not prevent operation in lower-current circuits. Physical package dimensions (BR-3 versus PB-6) must be verified for PCB layout compatibility.

Q: What is the significance of the "Not For New Designs" status on PB605-BP? A: This designation indicates that Micro Commercial Co does not recommend the PB605-BP for new product development. The part remains available for existing applications and maintenance purposes. New designs should prioritize the BR305 or equivalent active-status alternatives.

Q: Are there differences in forward voltage between BR305 and PB605-BP? A: Yes. BR305 specifies 1 V maximum forward voltage at 1.5A, while PB605-BP specifies 1.1 V maximum at 3A. This 0.1V difference is within standard rectifier tolerances and does not prevent substitution in typical power supply applications.

Q: Do the different operating temperature ranges affect substitution? A: The BR305 operates from -65°C to 125°C, while PB605-BP operates from -55°C to 150°C. For applications within the BR305 range (-65°C to 125°C), PB605-BP is fully compatible. Applications requiring operation below -55°C must use BR305.

Q: What is the physical difference between BR-3 and PB-6 packages? A: Both are 4-Square through-hole bridge rectifier packages. The BR-3 and PB-6 designations indicate different manufacturers' package specifications. Physical dimensions and PCB footprints may differ. Verify mechanical compatibility with your circuit board layout before substitution.

Q: Are both parts RoHS compliant? A: Yes. BR305 is RoHS Compliant, and PB605-BP is ROHS3 Compliant. Both meet RoHS requirements for hazardous substance restrictions.

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