PB61 Bridge Rectifier Single Phase 100V 6A Equivalent & Substitute Parts

Part Overview

The PB61 is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 100 V peak reverse voltage and 6 A average rectified current in a 4-Square PB-6 through-hole package. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts maintain the same package footprint, mounting type, and core electrical ratings while offering alternative voltage ratings and updated product status from active manufacturers.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	100 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A
Current - Reverse Leakage @ Vr	10 µA @ 100 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

Substitution for the PB61 is determined by the following criteria:

Fixed Parameters (Must Match):

Diode Type: Single Phase
Technology: Standard
Current - Average Rectified (Io): 6 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 3 A
Mounting Type: Through Hole
Package / Case: 4-Square, PB-6

Variable Parameter (Determines Substitution Category):

Voltage - Peak Reverse (Max): Ranges from 50 V to 1 kV across substitute options

Substitute parts are grouped by peak reverse voltage rating. The PB61 operates at 100 V; equivalent substitutes at the same voltage rating provide direct replacement capability. Higher voltage-rated substitutes (200 V, 400 V, 600 V, 800 V, 1 kV) are suitable for applications where the circuit design permits overvoltage margin. Lower voltage-rated substitutes (50 V) are suitable only for applications with reduced voltage requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Product Status	Inventory
PB61	Diodes Incorporated	100 V	6 A	1.1 V @ 3 A	10 µA @ 100 V	-65°C ~ 150°C	Obsolete	812 Pcs
PB605-BP	Micro Commercial Co	50 V	6 A	1.1 V @ 3 A	10 µA @ 50 V	-55°C ~ 150°C	Not For New Designs	2008 Pcs
PB61-BP	Micro Commercial Co	100 V	6 A	1.1 V @ 3 A	10 µA @ 100 V	-55°C ~ 150°C	Not For New Designs	2184 Pcs
PB610-BP	Micro Commercial Co	1 kV	6 A	1.1 V @ 3 A	10 µA @ 1000 V	-55°C ~ 150°C	Active	2429 Pcs
PB62-BP	Micro Commercial Co	200 V	6 A	1.1 V @ 3 A	10 µA @ 200 V	-55°C ~ 150°C	Not For New Designs	2942 Pcs
PB64-BP	Micro Commercial Co	400 V	6 A	1.1 V @ 3 A	10 µA @ 400 V	-55°C ~ 150°C	Not For New Designs	855 Pcs
PB66-BP	Micro Commercial Co	600 V	6 A	1.1 V @ 3 A	10 µA @ 600 V	-55°C ~ 150°C	Active	1912 Pcs
PB68-BP	Micro Commercial Co	800 V	6 A	1.1 V @ 3 A	10 µA @ 800 V	-55°C ~ 150°C	Active	899 Pcs

Engineering Selection Recommendations

Direct Equivalent (100 V Rating): PB61-BP from Micro Commercial Co provides electrical and mechanical equivalence to the PB61. Both are rated at 100 V peak reverse voltage with identical current and forward voltage specifications. The PB61-BP is classified as "Not For New Designs" but remains suitable for replacement in existing applications. Both parts are ROHS3 compliant and carry MSL 1 rating.

Active Product Alternatives (Higher Voltage Ratings): PB610-BP (1 kV), PB66-BP (600 V), and PB68-BP (800 V) are classified as Active products. These parts are suitable for applications where the circuit design accommodates higher voltage margins. Selection depends on the specific voltage requirement of the application. All maintain the 6 A current rating and identical forward voltage characteristics.

Lower Voltage Option: PB605-BP (50 V) is suitable only for applications with reduced voltage requirements below 100 V. This part is classified as "Not For New Designs."

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 rating. Operating temperature range for Micro Commercial Co substitutes is -55°C ~ 150°C, compared to the original PB61 range of -65°C ~ 150°C. Applications requiring operation below -55°C require evaluation of the original PB61 or alternative sources.

Frequently Asked Questions (FAQ)

Q: Can PB61-BP directly replace PB61 in existing designs? A: Yes. PB61-BP matches the PB61 in voltage rating (100 V), current rating (6 A), forward voltage (1.1 V @ 3 A), and package (4-Square PB-6). Both are through-hole mounted with identical pinout. The primary difference is product status; PB61-BP is classified as "Not For New Designs" but functions identically in replacement applications.

Q: What is the difference between PB61 and higher voltage substitutes like PB610-BP? A: Higher voltage substitutes (PB610-BP at 1 kV, PB66-BP at 600 V, PB68-BP at 800 V) maintain the same 6 A current rating and forward voltage characteristics but are rated for higher peak reverse voltages. These are suitable for applications where the circuit design permits overvoltage margin. Selection depends on the specific voltage requirement of the application.

Q: Can I use PB605-BP (50 V) as a substitute for PB61 (100 V)? A: No. PB605-BP is rated for 50 V peak reverse voltage, which is insufficient for applications designed for 100 V operation. Use of an undersized voltage rating creates risk of component failure under normal operating conditions.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (PB605-BP, PB61-BP, PB610-BP, PB62-BP, PB64-BP, PB66-BP, PB68-BP) are ROHS3 compliant with MSL 1 rating, matching the compliance profile of the original PB61.

Q: What is the operating temperature difference between PB61 and substitute parts? A: The original PB61 operates from -65°C to 150°C. Micro Commercial Co substitutes operate from -55°C to 150°C. Applications requiring operation below -55°C must use the original PB61 or identify alternative sources with extended low-temperature ratings.

Q: Are all substitute parts available in the same PB-6 package? A: Yes. All substitute parts use the 4-Square PB-6 through-hole package, ensuring mechanical and electrical compatibility with existing PCB designs.

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