3KBP005M-E4/51 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The 3KBP005M-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V peak reverse voltage and 3 A average rectified current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is housed in a 4-SIP KBPM package and is suitable for through-hole mounting applications requiring standard bridge rectification technology.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	1.05 V @ 3 A
Current - Reverse Leakage @ Vr	5 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 3KBP005M-E4/51 is determined by the following critical parameters:

Voltage Rating: Peak reverse voltage must be 50 V or greater
Current Rating: Average rectified current must meet or exceed 3 A
Diode Type: Single-phase bridge rectifier technology
Mounting: Through-hole configuration
Package Compatibility: 4-SIP or equivalent footprint
Compliance: ROHS3 compliance required

The substitute parts identified (KBP005G and KBP2005G) meet the voltage and mounting requirements. However, current ratings differ: KBP005G is rated at 1.5 A and KBP2005G is rated at 2 A, both below the original 3 A specification. These parts are suitable only for applications where the actual circuit current demand does not exceed their respective ratings.

Parameter Comparison

Parameter	3KBP005M-E4/51 (Main)	KBP005G	KBP2005G
Manufacturer	Vishay General Semiconductor	Diodes Incorporated	SMC Diode Solutions
Product Status	Obsolete	Active	Active
Voltage - Peak Reverse (Max)	50 V	50 V	50 V
Current - Average Rectified (Io)	3 A	1.5 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.05 V @ 3 A	1.1 V @ 1.5 A	1.1 V @ 2 A
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBPM	4-SIP, KBP	4-ESIP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected

Engineering Selection Recommendations

KBP005G (Diodes Incorporated): This part is active and maintains ROHS3 compliance with REACH unaffected status. The 1.5 A current rating is 50% of the original specification. Selection is appropriate only for circuits where the maximum sustained current does not exceed 1.5 A. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin compared to the original part.

KBP2005G (SMC Diode Solutions): This part is active and maintains ROHS3 compliance. The 2 A current rating is 67% of the original specification. Selection is appropriate for circuits where the maximum sustained current does not exceed 2 A. The operating temperature range matches the original part (-55°C to 150°C). REACH status is affected, requiring compliance verification for regulated applications.

Both substitute parts share identical voltage ratings, reverse leakage characteristics, and through-hole mounting configuration with the original part. Selection between them depends on actual circuit current requirements and regulatory compliance needs.

Frequently Asked Questions (FAQ)

Q: Can KBP005G or KBP2005G be used as direct replacements for 3KBP005M-E4/51?

A: Direct replacement is possible only if the circuit current demand does not exceed the substitute part's rating. KBP005G supports up to 1.5 A and KBP2005G supports up to 2 A. If the original design requires the full 3 A capability, neither substitute is suitable without circuit redesign.

Q: Are the package footprints compatible?

A: KBP005G uses a 4-SIP KBP package and KBP2005G uses a 4-ESIP package. While both are 4-pin through-hole configurations, physical dimensions may differ. PCB layout verification is required before implementation.

Q: What is the impact of the forward voltage difference?

A: KBP005G and KBP2005G both specify 1.1 V forward voltage compared to 1.05 V for the original part. This 0.05 V difference is measured at different current levels (1.5 A and 2 A respectively) and represents a minor increase in power dissipation for equivalent current levels.

Q: Are both substitutes compliant with environmental regulations?

A: Both parts are ROHS3 compliant. KBP005G has REACH unaffected status, while KBP2005G has REACH affected status. Applications subject to REACH regulations should prioritize KBP005G.

Q: Which substitute has the better temperature performance?

A: KBP005G operates from -65°C to 150°C, providing 10°C additional low-temperature capability compared to the original part's -55°C minimum. KBP2005G matches the original temperature range of -55°C to 150°C.

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