UD3KB10-BP Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The UD3KB10-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 100 V peak reverse voltage with 3 A average rectified current. This component is classified as not for new designs, indicating it has been superseded in the manufacturer's product line. The part is housed in a 4-SIP through-hole package (D3K form factor) and operates across a temperature range of -55°C to 150°C.

Finding equivalent and substitute parts is necessary due to the product's discontinued status for new applications. Substitutes must maintain compatibility with the original mounting footprint, electrical ratings, and thermal operating range while meeting current compliance standards.

Substiute Parts

UD3KB10-BP

Micro Commercial CoIn Stock: 714UD3KB10-BP Datasheet

Current PartRFQ

UG6KB10

SMC Diode SolutionsIn Stock: 934UG6KB10 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the UD3KB10-BP is based on the following criteria:

Mandatory Compatibility Parameters:

• Voltage - Peak Reverse (Max): Must be 100 V or greater
• Diode Type: Must be Single Phase bridge rectifier
• Mounting Type: Must be Through Hole
• Package / Case: Must be 4-SIP or equivalent D3K form factor
• Operating Temperature Range: Must span -55°C to 150°C minimum

Performance Parameters (Equal or Superior):

• Current - Average Rectified (Io): Substitute must support 3 A or greater
• Voltage - Forward (Vf): Lower or equal values are preferred for efficiency
• Current - Reverse Leakage: Lower values indicate better performance

The substitute part UG6KB10 meets all mandatory compatibility requirements. It maintains the same 100 V peak reverse voltage rating, single-phase bridge rectifier topology, through-hole mounting, D3K package form factor, and -55°C to 150°C operating temperature range. The UG6KB10 exceeds the current rating (6 A versus 3 A), making it suitable for applications requiring the original part's specifications.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: The UG6KB10 is the recommended substitute for new applications. It carries Active product status from SMC Diode Solutions, ensuring long-term availability and supply chain stability. The part is ROHS3 compliant and REACH affected, meeting current environmental and regulatory requirements. The higher current rating (6 A) provides design margin above the original 3 A specification.

For Existing Designs Requiring Replacement: The UG6KB10 maintains full electrical and mechanical compatibility with the UD3KB10-BP. The 4-ESIP package variant uses the same D3K form factor, ensuring PCB footprint compatibility. The identical operating temperature range (-55°C to 150°C) and voltage rating (100 V) support direct substitution in existing circuits. The improved reverse leakage characteristics (5 µA versus 10 µA) represent a performance enhancement.

Compliance Considerations: The original UD3KB10-BP carries REACH Unaffected status. The substitute UG6KB10 is REACH Affected and ROHS3 Compliant, reflecting current regulatory frameworks. Both parts share the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the UG6KB10 be used as a direct replacement for the UD3KB10-BP in existing circuits?

A: Yes. The UG6KB10 maintains equivalent voltage rating (100 V), operating temperature range (-55°C to 150°C), mounting type (through hole), and package form factor (D3K). The higher current rating (6 A versus 3 A) does not prevent substitution; it provides additional capacity margin.

Q: What is the difference between the 4-SIP and 4-ESIP package designations?

A: Both designations refer to 4-pin single in-line packages using the D3K form factor. The ESIP variant (UG6KB10) represents an enhanced version of the standard SIP package (UD3KB10-BP). The physical footprint and pin spacing remain compatible for PCB mounting.

Q: Does the higher forward voltage (1.1 V @ 6 A) of the UG6KB10 affect circuit performance compared to the original 1 V @ 1.5 A specification?

A: The forward voltage specifications are measured at different current levels. At the original part's operating point (1.5 A), the UG6KB10 would exhibit lower forward voltage than the stated 1.1 V @ 6 A specification. The slight increase in forward voltage at higher currents results in marginally higher heat dissipation but does not prevent substitution in circuits designed for the original 3 A rating.

Q: Why is the UG6KB10 rated for 6 A when the original part is only 3 A?

A: The UG6KB10 uses improved semiconductor technology and thermal design compared to the UD3KB10-BP. The higher current rating reflects enhanced performance capabilities. Circuits designed for 3 A operation will function correctly with the 6 A-rated substitute, as the part will operate well within its rated capacity.

Q: Are there any compliance or regulatory differences between the two parts?

A: The UD3KB10-BP is REACH Unaffected, while the UG6KB10 is REACH Affected and ROHS3 Compliant. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. The UG6KB10's compliance status reflects current regulatory requirements for new component designs and procurement.

Q: What is the reverse leakage improvement in the UG6KB10?

A: The UG6KB10 exhibits 5 µA reverse leakage at 100 V, compared to 10 µA for the UD3KB10-BP. This 50% reduction in leakage current indicates improved semiconductor quality and lower standby current consumption in circuits where the rectifier is reverse-biased.