PBPC806 Bridge Rectifier - Equivalent & Substitute Parts

Part Overview

The PBPC806 is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 800 V peak reverse voltage and 6 A average rectified current. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are used in power supply circuits, industrial equipment, and AC-to-DC conversion applications where single-phase rectification is required.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	800 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A
Current - Reverse Leakage @ Vr	10 µA @ 800 V
Operating Temperature Range	-65°C ~ 125°C (TJ)
Diode Type	Single Phase
Technology	Standard
Mounting Type	Through Hole
Package / Case	4-Square, PBPC-8

Substitute Part Grouping Explanation

Substitution of the PBPC806 is determined by the following critical parameters:

Voltage Rating: Peak reverse voltage must be 800 V or greater
Current Rating: Average rectified current must meet or exceed 6 A
Diode Type: Single-phase bridge rectifier configuration
Technology: Standard rectifier technology
Mounting: Through-hole package type
Package Compatibility: Physical form factor must accommodate PBPC-8 or equivalent 4-square package footprint

The MB88-BP meets these substitution criteria with matching voltage and leakage specifications, while providing higher current capacity (8 A) and active product status.

Parameter Comparison

Parameter	PBPC806 (Main Part)	MB88-BP (Substitute)	Compatibility
Manufacturer	Diodes Incorporated	Micro Commercial Co	Different manufacturer
Voltage - Peak Reverse (Max)	800 V	800 V	Matched
Current - Average Rectified (Io)	6 A	8 A	Substitute exceeds requirement
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A	1.1 V @ 4 A	Matched
Current - Reverse Leakage @ Vr	10 µA @ 800 V	10 µA @ 800 V	Matched
Operating Temperature Range	-65°C ~ 125°C	-55°C ~ 125°C	Substitute has narrower range
Diode Type	Single Phase	Single Phase	Matched
Technology	Standard	Standard	Matched
Mounting Type	Through Hole	Through Hole	Matched
Package / Case	4-Square, PBPC-8	4-Square, BR-6	Different package designation
Product Status	Obsolete	Active	Substitute is in active production
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched
REACH Status	REACH Affected	REACH Unaffected	Substitute has better compliance status

Engineering Selection Recommendations

The MB88-BP is a suitable substitute for the PBPC806 based on the following factors:

Electrical Equivalence: Identical peak reverse voltage (800 V), forward voltage drop (1.1 V @ 4 A), and reverse leakage current (10 µA @ 800 V) ensure functional compatibility in existing circuit designs
Current Capacity: The 8 A rating of the MB88-BP exceeds the 6 A requirement of the PBPC806, providing design margin without circuit modification
Active Product Status: The MB88-BP is in active production, ensuring long-term availability and supply chain continuity
Compliance: Both components are ROHS3 compliant. The MB88-BP carries REACH Unaffected status, which may provide advantages in certain regulatory environments
Temperature Range Consideration: The MB88-BP operates from -55°C to 125°C, compared to the PBPC806 range of -65°C to 125°C. Applications requiring operation below -55°C require verification of thermal requirements

Physical package verification is necessary prior to implementation, as the PBPC-8 and BR-6 designations indicate different package suppliers despite both being 4-square through-hole configurations.

Frequently Asked Questions (FAQ)

Q: Can the MB88-BP directly replace the PBPC806 without circuit modification?

A: The MB88-BP meets all critical electrical parameters (voltage, current, forward drop, and leakage) of the PBPC806. No circuit modification is required from an electrical standpoint. Physical package compatibility must be verified before PCB assembly.

Q: Why does the MB88-BP have a higher current rating (8 A vs 6 A)?

A: Higher current ratings in substitute components provide design margin and thermal headroom. The circuit will operate within the MB88-BP's specifications if it operated within the PBPC806's specifications.

Q: What is the significance of the different operating temperature ranges?

A: The PBPC806 operates from -65°C to 125°C, while the MB88-BP operates from -55°C to 125°C. If the application requires operation below -55°C, the MB88-BP is not suitable. For standard industrial and consumer applications operating above -55°C, this difference is not a limiting factor.

Q: Are the PBPC-8 and BR-6 packages physically compatible?

A: Both are 4-square through-hole packages, but the different designations indicate different package suppliers. Physical dimensions and lead spacing must be verified against PCB footprint requirements before substitution.

Q: What is the advantage of the MB88-BP's REACH Unaffected status?

A: REACH Unaffected status indicates the component is not subject to REACH regulatory restrictions, simplifying compliance documentation for applications in regulated markets. The PBPC806's REACH Affected status requires additional compliance tracking.

Q: Is the MB88-BP suitable for high-temperature applications?

A: Both components share the same maximum junction temperature of 125°C. The MB88-BP is suitable for applications up to this temperature limit.

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