KBP005M-M4/51 Equivalent & Substitute Parts

Part Overview

The KBP005M-M4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Bridge rectifiers in this performance class are used in AC-to-DC conversion applications requiring moderate current handling and voltage regulation.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 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 of the KBP005M-M4/51 is determined by electrical and mechanical compatibility across the following critical parameters:

Voltage Rating: Peak reverse voltage must equal or exceed 50 V
Current Rating: Average rectified current must meet or exceed 1.5 A
Forward Voltage Characteristics: Forward voltage drop must be compatible with circuit design margins
Reverse Leakage: Leakage current specifications must not exceed application requirements
Temperature Range: Operating temperature limits must encompass the intended application environment
Package Type: Through-hole mounting in 4-SIP configuration is required for mechanical compatibility
Compliance: RoHS3 compliance and REACH unaffected status must be maintained

The KBP005G from Diodes Incorporated meets all electrical and mechanical substitution criteria for the KBP005M-M4/51.

Parameter Comparison

Parameter	KBP005M-M4/51 (Vishay)	KBP005G (Diodes Inc.)	Compatibility
Voltage - Peak Reverse (Max)	50 V	50 V	Equivalent
Current - Average Rectified (Io)	1.5 A	1.5 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1.1 V @ 1.5 A	Compatible
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	Equivalent
Operating Temperature Range	-55°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	Compatible (wider range)
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	4-SIP, KBPM	4-SIP, KBP	Compatible
Product Status	Obsolete	Active	Substitute available
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The KBP005G from Diodes Incorporated is the direct functional equivalent for the obsolete KBP005M-M4/51. Selection of the KBP005G is supported by:

Identical voltage and current ratings (50 V, 1.5 A)
Equivalent reverse leakage characteristics (5 µA @ 50 V)
Extended operating temperature range (-65°C vs. -55°C minimum), providing broader environmental compatibility
Active product status ensuring long-term availability and supply chain continuity
Maintained RoHS3 compliance and REACH unaffected status
Compatible through-hole 4-SIP package configuration

The forward voltage specification of the KBP005G (1.1 V @ 1.5 A) is marginally higher than the KBP005M-M4/51 (1 V @ 1 A) but remains within acceptable design tolerances for standard rectification applications. Circuit designers should verify forward voltage drop compatibility within their specific application context.

Frequently Asked Questions (FAQ)

Q: Can the KBP005G be used as a direct replacement for the KBP005M-M4/51 without PCB modifications?

A: Yes. Both components use identical 4-SIP through-hole package configurations. Pin-to-pin compatibility is maintained, and no PCB layout changes are required.

Q: What is the significance of the forward voltage difference between these parts?

A: The KBP005G exhibits 1.1 V forward voltage at 1.5 A compared to 1 V at 1 A for the KBP005M-M4/51. This 0.1 V difference is typical among bridge rectifier variants and does not affect functionality in standard AC-to-DC conversion circuits. Circuit designers should confirm that their power supply design accommodates this voltage drop.

Q: Why is the KBP005M-M4/51 listed as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production. The KBP005G provides equivalent electrical performance and is actively manufactured, making it the appropriate long-term solution for new designs and legacy system support.

Q: Are there compliance differences between the two parts?

A: No. Both the KBP005M-M4/51 and KBP005G maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across applications.

Q: Does the KBP005G have a wider operating temperature range?

A: Yes. The KBP005G operates from -65°C to 150°C, compared to -55°C to 150°C for the KBP005M-M4/51. This extended lower temperature limit provides additional design margin for applications in cold environments.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message