2KBP005M Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The 2KBP005M is a single-phase bridge rectifier manufactured by onsemi, rated for 50 V peak reverse voltage and 2 A average rectified current in a 4-SIP KBPM through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Bridge rectifiers in this voltage and current class are used in AC-to-DC conversion applications requiring compact, through-hole mounting solutions. Substitutes must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating different package variants and manufacturer offerings.

Key Parameters

Parameter	2KBP005M Specification
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max)	1.1 V @ 3.14 A
Current - Reverse Leakage @ Vr	5 µA @ 50 V
Operating Temperature Range	-55°C to 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitution logic for the 2KBP005M is based on the following criteria:

Primary Substitution Criteria (Exact Match Required):

Voltage - Peak Reverse (Max): 50 V
Current - Average Rectified (Io): 2 A or higher
Diode Type: Single Phase
Technology: Standard
Mounting Type: Through Hole

Secondary Compatibility Factors:

Operating temperature range must encompass or exceed the original specification
Forward voltage characteristics must be compatible with circuit design
Reverse leakage current must not exceed specified limits
Package variants (4-SIP, KBP, D-44) are mechanically interchangeable in through-hole applications

Parts listed as active or obsolete with equivalent electrical ratings are suitable substitutes. RoHS and REACH compliance status should be verified against end-application requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max)	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status
2KBP005M	onsemi	50 V	2 A	1.1 V @ 3.14 A	5 µA @ 50 V	-55°C ~ 150°C	4-SIP, KBPM	Obsolete
KBP005G	Diodes Incorporated	50 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 50 V	-65°C ~ 150°C	4-SIP, KBP	Active
KBP2005G	SMC Diode Solutions	50 V	2 A	1.1 V @ 2 A	5 µA @ 50 V	-55°C ~ 150°C	4-ESIP	Active
VS-2KBP005	Vishay General Semiconductor - Diodes Division	50 V	2 A	1 V @ 1 A	10 µA @ 50 V	-40°C ~ 150°C	4-SIP, D-44	Active

Engineering Selection Recommendations

Direct Equivalent (Preferred): KBP2005G and VS-2KBP005 are direct electrical equivalents to the 2KBP005M, both rated for 50 V and 2 A. Both are active products with current manufacturing support. KBP2005G is ROHS3 compliant and REACH affected. VS-2KBP005 is ROHS3 compliant and REACH unaffected. Selection between these two should be based on supply chain availability and compliance requirements specific to the end application.

Acceptable Substitute (Current Rating Consideration): KBP005G from Diodes Incorporated is rated for 1.5 A average rectified current, which is lower than the 2 A specification of the 2KBP005M. This part is suitable only for applications where the actual circuit current demand does not exceed 1.5 A. The part offers an extended operating temperature range (-65°C to 150°C) and is an active product.

Higher Voltage Alternatives: VS-2KBP02, VS-2KBP04, VS-2KBP06, VS-2KBP08, and VS-2KBP10 are available from Vishay with peak reverse voltages of 200 V, 400 V, 600 V, 800 V, and 1 kV respectively, all rated for 2 A. These parts are suitable only when higher voltage ratings are required by the circuit design and are not recommended as direct substitutes for 50 V applications.

Frequently Asked Questions (FAQ)

Q: Can KBP005G replace 2KBP005M in all applications? A: KBP005G is rated for 1.5 A average rectified current versus 2 A for the 2KBP005M. It is suitable only if the actual circuit current does not exceed 1.5 A. Verify circuit current requirements before substitution.

Q: What is the difference between 4-SIP KBPM, 4-SIP KBP, and 4-SIP D-44 packages? A: All three are 4-pin single in-line packages for through-hole mounting with identical electrical pinouts. Package designations reflect manufacturer conventions. Physical dimensions may vary slightly; verify PCB footprint compatibility before assembly.

Q: Are VS-2KBP02, VS-2KBP04, VS-2KBP06, VS-2KBP08, and VS-2KBP10 suitable replacements? A: These parts have higher peak reverse voltage ratings (200 V to 1 kV) and are not direct substitutes for the 50 V 2KBP005M. Use only when circuit design requires higher voltage ratings.

Q: What is the significance of ROHS3 compliance and REACH status? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances directives. REACH status indicates regulatory classification under the European Registration, Evaluation, Authorization and Restriction of Chemicals regulation. Verify compliance requirements for your end application and geographic market.

Q: How do forward voltage specifications differ between substitutes? A: The 2KBP005M specifies 1.1 V @ 3.14 A, KBP2005G specifies 1.1 V @ 2 A, and VS-2KBP005 specifies 1 V @ 1 A. Forward voltage varies with current. Verify that the substitute's forward voltage characteristic is acceptable for your circuit's operating current range.

Q: What is the impact of reverse leakage current differences? A: The 2KBP005M specifies 5 µA @ 50 V, while VS-2KBP005 specifies 10 µA @ 50 V. Higher reverse leakage may affect circuit performance in high-impedance applications. Evaluate circuit sensitivity to leakage current before substitution.

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