PB605 Bridge Rectifier Single Phase 50V 6A Equivalent & Substitute Parts

Part Overview

The PB605 is a single-phase bridge rectifier rated for 50 V peak reverse voltage and 6 A average rectified current in a 4-Square PB-6 through-hole 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)	50 V
Current - Average Rectified (Io)	6 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A
Current - Reverse Leakage @ Vr	10 µA @ 50 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 PB605 is determined by the following criteria:

Mandatory Compatibility Parameters:

Diode Type: Single Phase
Technology: Standard
Current - Average Rectified (Io): 6 A
Mounting Type: Through Hole
Package / Case: 4-Square, PB-6
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 3 A
Current - Reverse Leakage: 10 µA at rated voltage

Voltage Rating Consideration: Substitute parts may have equal or higher peak reverse voltage ratings than the original 50 V specification. Higher voltage ratings maintain backward compatibility in applications where the original 50 V rating is sufficient.

Temperature Range Consideration: The PB605 operates from -65°C to 150°C. Substitute parts with operating ranges of -55°C to 150°C are acceptable for most applications but represent a narrower lower temperature limit.

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	Packaging
PB605	Diodes Incorporated	50 V	6 A	1.1 V @ 3 A	10 µA @ 50 V	-65°C ~ 150°C	Obsolete	Through Hole
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	Through Hole
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	Through Hole
PB610-BP	Micro Commercial Co	1 kV	6 A	1.1 V @ 3 A	10 µA @ 1000 V	-55°C ~ 150°C	Active	Through Hole
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	Through Hole
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	Through Hole
PB66-BP	Micro Commercial Co	600 V	6 A	1.1 V @ 3 A	10 µA @ 600 V	-55°C ~ 150°C	Active	Through Hole
PB68-BP	Micro Commercial Co	800 V	6 A	1.1 V @ 3 A	10 µA @ 800 V	-55°C ~ 150°C	Active	Through Hole

Engineering Selection Recommendations

Direct Equivalent (Same Voltage Rating): PB605-BP from Micro Commercial Co is the direct equivalent with identical 50 V peak reverse voltage and 6 A current rating. This part is classified as "Not For New Designs" but remains available for legacy system support and repair applications.

Higher Voltage Ratings (Backward Compatible): PB61-BP (100 V), PB62-BP (200 V), PB64-BP (400 V), PB66-BP (600 V), and PB68-BP (800 V) are electrically compatible substitutes. These parts maintain the 6 A current rating and identical forward voltage characteristics. Higher voltage ratings provide overvoltage margin in applications where the original 50 V specification is adequate.

Active Product Status: PB610-BP (1 kV), PB66-BP (600 V), and PB68-BP (800 V) are classified as Active products and represent the most current manufacturing status for new production requirements.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. All parts carry EAR99 ECCN classification and 8541.10.0080 HTSUS code.

Temperature Range Limitation: Substitute parts from Micro Commercial Co operate from -55°C to 150°C, which is 10°C higher than the PB605 minimum of -65°C. Applications requiring operation below -55°C require the original PB605 or equivalent parts with extended low-temperature ratings.

Frequently Asked Questions (FAQ)

Q: Can PB605-BP be used as a direct replacement for PB605? A: Yes. PB605-BP is the direct equivalent with identical electrical specifications: 50 V peak reverse voltage, 6 A average rectified current, 1.1 V forward voltage at 3 A, and 10 µA reverse leakage at 50 V. Both use the same 4-Square PB-6 through-hole package. The operating temperature range differs by 10°C at the lower limit (-55°C vs. -65°C).

Q: What is the difference between PB605-BP and higher voltage rated parts like PB610-BP? A: The primary difference is peak reverse voltage rating. PB605-BP is rated for 50 V, while PB610-BP is rated for 1 kV. All other electrical parameters remain identical: 6 A current, 1.1 V forward voltage, and 10 µA reverse leakage at their respective voltage ratings. Higher voltage parts are backward compatible in 50 V applications.

Q: Are all substitute parts in the same package? A: Yes. All listed substitute parts use the 4-Square PB-6 through-hole package, ensuring mechanical and electrical compatibility with the original PB605 footprint.

Q: Which substitute parts are recommended for new designs? A: PB610-BP, PB66-BP, and PB68-BP are classified as Active products. PB610-BP (1 kV) offers the highest voltage margin, while PB66-BP (600 V) and PB68-BP (800 V) provide intermediate ratings. Selection depends on the application's voltage requirements.

Q: What is the significance of "Not For New Designs" status? A: Parts marked "Not For New Designs" remain available for legacy system support and repair but are not recommended for new product development. Active status parts are preferred for new designs due to ongoing manufacturing support and supply continuity.

Q: Can I use a higher voltage rated part in place of the 50 V PB605? A: Yes, provided the application circuit design permits it. Higher voltage ratings do not affect performance in lower voltage applications. The 6 A current rating, forward voltage, and reverse leakage characteristics remain consistent across all substitute parts.

Q: What compliance certifications apply to these parts? A: All parts are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are classified as EAR99 for export control purposes.

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