PB66 Bridge Rectifier Single Phase 600V 6A Equivalent & Substitute Parts

Part Overview

The PB66 is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 600 V peak reverse voltage and 6 A average rectified current in a through-hole PB-6 package. This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	600 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A
Current - Reverse Leakage @ Vr	10 µA @ 600 V
Operating Temperature Range	-65°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-Square, PB-6
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the PB66 are qualified based on the following criteria:

Identical mechanical compatibility: All substitutes use the same 4-Square, PB-6 through-hole package, ensuring direct PCB mounting without layout modifications.
Matching current rating: All substitutes maintain 6 A average rectified current (Io), preserving thermal and electrical load characteristics.
Identical forward voltage characteristics: All substitutes specify 1.1 V maximum forward voltage at 3 A, ensuring equivalent voltage drop performance.
Identical reverse leakage specification: All substitutes maintain 10 µA reverse leakage at their respective voltage ratings.
Standard rectifier technology: All substitutes use standard bridge rectifier technology with single-phase configuration.
Voltage rating flexibility: Substitutes are available across a voltage range (50 V to 1 kV) to accommodate different circuit requirements. The 600 V rated PB66-BP provides direct electrical equivalence.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status	RoHS Status
PB66	Diodes Incorporated	600 V	6 A	1.1 V @ 3 A	10 µA @ 600 V	-65°C ~ 150°C	4-Square, PB-6	Obsolete	ROHS3 Compliant
PB605-BP	Micro Commercial Co	50 V	6 A	1.1 V @ 3 A	10 µA @ 50 V	-55°C ~ 150°C	4-Square, PB-6	Not For New Designs	ROHS3 Compliant
PB61-BP	Micro Commercial Co	100 V	6 A	1.1 V @ 3 A	10 µA @ 100 V	-55°C ~ 150°C	4-Square, PB-6	Not For New Designs	ROHS3 Compliant
PB610-BP	Micro Commercial Co	1 kV	6 A	1.1 V @ 3 A	10 µA @ 1000 V	-55°C ~ 150°C	4-Square, PB-6	Active	ROHS3 Compliant
PB62-BP	Micro Commercial Co	200 V	6 A	1.1 V @ 3 A	10 µA @ 200 V	-55°C ~ 150°C	4-Square, PB-6	Not For New Designs	ROHS3 Compliant
PB64-BP	Micro Commercial Co	400 V	6 A	1.1 V @ 3 A	10 µA @ 400 V	-55°C ~ 150°C	4-Square, PB-6	Not For New Designs	ROHS3 Compliant
PB66-BP	Micro Commercial Co	600 V	6 A	1.1 V @ 3 A	10 µA @ 600 V	-55°C ~ 150°C	4-Square, PB-6	Active	ROHS3 Compliant
PB68-BP	Micro Commercial Co	800 V	6 A	1.1 V @ 3 A	10 µA @ 800 V	-55°C ~ 150°C	4-Square, PB-6	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Recommended for PB66 Replacement)

PB66-BP (Micro Commercial Co) is the direct functional equivalent. It maintains identical electrical specifications (600 V, 6 A, 1.1 V forward voltage, 10 µA reverse leakage) and mechanical compatibility (PB-6 package). PB66-BP is classified as Active, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant.

Voltage-Rated Alternatives

Substitute parts are available across voltage ratings from 50 V to 1 kV, all maintaining 6 A current capacity and identical forward voltage characteristics. Selection of alternative voltage ratings depends on circuit requirements:

PB605-BP (50 V), PB61-BP (100 V), PB62-BP (200 V), PB64-BP (400 V): Suitable for lower-voltage applications. These parts are classified as Not For New Designs.
PB610-BP (1 kV), PB68-BP (800 V): Suitable for higher-voltage applications. Both are classified as Active.

All substitutes are ROHS3 compliant and use identical PB-6 through-hole packaging. Operating temperature range for Micro Commercial Co parts is -55°C ~ 150°C, compared to the original PB66 range of -65°C ~ 150°C.

Frequently Asked Questions (FAQ)

Q: Can PB66-BP directly replace PB66?

A: Yes. PB66-BP provides direct electrical and mechanical equivalence. Both are rated for 600 V peak reverse voltage, 6 A average rectified current, and use the PB-6 through-hole package. PB66-BP is Active status, ensuring availability.

Q: What is the difference between PB66 and PB66-BP?

A: PB66 (Diodes Incorporated) is obsolete. PB66-BP (Micro Commercial Co) is the active equivalent with identical electrical specifications and package. The primary difference is manufacturer and product status.

Q: Can I use a lower voltage-rated substitute like PB64-BP (400 V) instead of PB66 (600 V)?

A: No. Voltage rating must meet or exceed circuit requirements. Using a lower-rated part creates overstress conditions and reliability risk. Select a substitute with voltage rating equal to or greater than the original specification.

Q: Can I use a higher voltage-rated substitute like PB610-BP (1 kV) instead of PB66 (600 V)?

A: Yes, if circuit design permits. Higher voltage ratings provide additional safety margin. However, verify that the application does not require the specific thermal or electrical characteristics of the 600 V rating. All substitutes maintain identical 6 A current capacity and 1.1 V forward voltage.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitutes are ROHS3 compliant, matching the compliance status of the original PB66.

Q: What is the operating temperature difference between PB66 and substitute parts?

A: PB66 operates from -65°C to 150°C. Micro Commercial Co substitutes operate from -55°C to 150°C. If the application requires operation below -55°C, the original PB66 specification must be maintained or alternative parts evaluated.

Q: Are all substitutes available in the same PB-6 package?

A: Yes. All listed substitutes use the 4-Square, PB-6 through-hole package, ensuring direct PCB compatibility without layout modifications.

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