KBP005M-E4/51 Equivalent & Substitute Parts

Part Overview

The KBP005M-E4/51 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 suitable equivalent parts essential for ongoing system support and new design implementations. Bridge rectifiers in this voltage and current class are fundamental components in AC-to-DC conversion circuits, and equivalent parts must maintain electrical and mechanical compatibility within specified tolerances.

Substiute Parts

KBP005M-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 796KBP005M-E4/51 Datasheet

Current PartRFQ

KBP005G

Diodes IncorporatedIn Stock: 2155KBP005G Datasheet

MFR RecommendedRFQ

KBP2005G

SMC Diode SolutionsIn Stock: 3481KBP2005G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KBP005M-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 1.5 A
• Diode Type: Single-phase bridge rectifier configuration
• Technology: Standard rectifier technology
• Mounting Type: Through-hole package required for mechanical compatibility
• Reverse Leakage: Maximum 5 µA @ 50 V
• Operating Temperature: Must support the required thermal range

The identified substitute parts maintain these core electrical specifications while offering active product status and improved availability compared to the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

KBP005G (Diodes Incorporated) is the primary equivalent for direct replacement. This part maintains identical voltage and current ratings, meets ROHS3 compliance, carries REACH Unaffected status, and is currently in active production with high inventory availability (2060 pcs). The operating temperature range extends to -65°C, providing enhanced low-temperature performance. Forward voltage specification is marginally higher (1.1 V @ 1.5 A versus 1 V @ 1 A), which is within acceptable tolerance for standard rectifier applications.

KBP2005G (SMC Diode Solutions) is a secondary equivalent suitable for applications requiring higher current capacity. This part is rated for 2 A average rectified current, exceeding the original 1.5 A specification, and maintains the 50 V voltage rating. It is actively produced with substantial inventory (3424 pcs). However, REACH Status is listed as Affected, requiring verification against specific regulatory requirements. Package configuration differs (4-ESIP versus 4-SIP), necessitating mechanical compatibility assessment for board-level integration.

Both substitute parts satisfy the core electrical requirements and compliance certifications of the original component. Selection between them depends on current capacity requirements and regulatory compliance constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can KBP005G be used as a direct pin-for-pin replacement for KBP005M-E4/51?

A: KBP005G maintains identical electrical ratings (50 V, 1.5 A) and through-hole mounting configuration. Both use 4-SIP package families (KBPM versus KBP), which are mechanically compatible for standard PCB layouts. Verification of specific board footprint dimensions is recommended prior to implementation.

Q: What is the significance of the forward voltage difference between KBP005M-E4/51 (1 V @ 1 A) and KBP005G (1.1 V @ 1.5 A)?

A: The forward voltage specifications are measured at different current levels. KBP005G is specified at its rated current (1.5 A), while the original part is specified at 1 A. Forward voltage increases with current in rectifier diodes. The 0.1 V difference is typical for standard rectifier technology and does not affect circuit functionality in most AC-to-DC conversion applications.

Q: Why does KBP2005G have a higher current rating (2 A) than the original part (1.5 A)?

A: KBP2005G is a higher-capacity variant within the same voltage class. It can be used in applications requiring the original 1.5 A specification, as it exceeds the minimum current requirement. However, thermal management and PCB design must accommodate the higher current capability to prevent component degradation.

Q: Are there package compatibility concerns when substituting KBP2005G (4-ESIP) for KBP005M-E4/51 (4-SIP)?

A: Both packages are four-lead through-hole configurations for bridge rectifiers, but physical dimensions may differ. The 4-ESIP package used by KBP2005G requires verification against the original PCB footprint. Consult manufacturer datasheets for precise lead spacing and mounting hole specifications before board redesign.

Q: What is the impact of REACH Affected status on KBP2005G?

A: REACH Affected status indicates the component contains substances of concern under European chemical regulations. Regulatory compliance verification is required for applications subject to REACH requirements. KBP005G maintains REACH Unaffected status, making it the preferred choice for applications with strict regulatory constraints.

Q: Do all three parts meet RoHS3 compliance?

A: Yes. KBP005M-E4/51, KBP005G, and KBP2005G are all ROHS3 Compliant, confirming the absence of restricted substances (lead, cadmium, hexavalent chromium, PBBs, PBDEs, and phthalates) within specified concentration limits.