CBRLD1-04 BK Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The CBRLD1-04 BK is a single-phase bridge rectifier manufactured by Central Semiconductor Corp, rated for 400 V peak reverse voltage and 1 A average rectified current in a 4-LPDIP surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

CBRLD1-04 BK

Central Semiconductor CorpIn Stock: 794CBRLD1-04 BK Datasheet

Current PartRFQ

ABS4U

SMC Diode SolutionsIn Stock: 1190ABS4U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CBRLD1-04 BK is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage Rating: Peak reverse voltage must equal or exceed 400 V
• Current Rating: Average rectified current must equal or exceed 1 A
• Diode Configuration: Single-phase bridge rectifier topology
• Technology: Standard rectifier technology
• Package Type: 4-SMD, Gull Wing surface mount configuration
• Temperature Range: Operating range must encompass -55°C to 150°C

The ABS4U from SMC Diode Solutions meets all substitution criteria and is classified as an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The ABS4U is the primary substitute for the obsolete CBRLD1-04 BK. Selection is based on the following factors:

• Product Status: The ABS4U maintains active manufacturing status, ensuring long-term availability and supply chain continuity.
• Electrical Equivalence: Both components share identical voltage and current ratings, operating temperature range, and package configuration.
• Compliance: The ABS4U is ROHS3 compliant and REACH affected, meeting current regulatory requirements for electronic components.
• Performance Characteristics: The ABS4U exhibits lower reverse leakage current (5 µA versus 10 µA), representing improved performance within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the ABS4U directly replace the CBRLD1-04 BK in existing designs?

A: Yes. Both components are single-phase bridge rectifiers with identical 400 V / 1 A ratings, operating temperature range, and 4-SMD Gull Wing package configuration. No circuit modifications are required.

Q: What is the significance of the forward voltage difference (1 V versus 1.1 V)?

A: The ABS4U forward voltage is 0.1 V higher at rated current. This difference is within typical rectifier tolerance and does not affect circuit functionality in standard power supply applications. Thermal dissipation may increase marginally in high-current continuous operation.

Q: Are there packaging differences between these components?

A: Both components use identical 4-SMD Gull Wing surface mount packaging. The CBRLD1-04 BK is supplied in standard packaging, while the ABS4U is available in Tape & Reel format for automated assembly processes.

Q: Why is the CBRLD1-04 BK classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The ABS4U provides functional equivalence with active manufacturing support and improved compliance certifications.

Q: What compliance certifications apply to the ABS4U?

A: The ABS4U is ROHS3 compliant and REACH affected, meeting current environmental and regulatory standards for electronic component distribution and use.