CBRLD1-08 BK Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The CBRLD1-08 BK is a single-phase bridge rectifier manufactured by Central Semiconductor Corp, rated for 800 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.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	800 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A
Current - Reverse Leakage @ Vr	10 µA @ 800 V
Operating Temperature Range	-55°C to 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CBRLD1-08 BK is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage Rating: Peak reverse voltage must equal or exceed 800 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
Operating Temperature: Must support -55°C to 150°C range
Forward Voltage Characteristics: Maximum forward voltage at rated current

The ABS8U from SMC Diode Solutions meets all substitution criteria and is classified as an active product with current manufacturing support.

Parameter Comparison

Parameter	CBRLD1-08 BK	ABS8U	Match Status
Diode Type	Single Phase	Single Phase	Equivalent
Technology	Standard	Standard	Equivalent
Voltage - Peak Reverse (Max)	800 V	800 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1.1 V @ 1 A	Compatible
Current - Reverse Leakage @ Vr	10 µA @ 800 V	5 µA @ 800 V	Compatible
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Obsolete	Active	Improved

Engineering Selection Recommendations

The ABS8U is the primary substitute for the CBRLD1-08 BK based on the following factors:

Electrical Equivalence: The ABS8U maintains identical voltage and current ratings (800 V, 1 A) with compatible forward voltage and reverse leakage characteristics within acceptable engineering tolerances.

Product Status: The ABS8U is an active product with current manufacturing support, eliminating obsolescence risk associated with the CBRLD1-08 BK.

Compliance & Certifications: The ABS8U carries RoHS3 compliance and REACH affected status, meeting modern regulatory requirements. Both components share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Package Compatibility: Both components use identical 4-SMD, Gull Wing surface mount packaging, enabling direct PCB layout compatibility without redesign.

Inventory Availability: The ABS8U is available in higher quantities (1,054 Pcs) compared to the obsolete CBRLD1-08 BK (926 Pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the ABS8U directly replace the CBRLD1-08 BK without PCB modifications?

A: Yes. Both components use identical 4-SMD, Gull Wing packaging with equivalent pinout configurations, enabling direct substitution without PCB layout changes.

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

A: The 0.1 V difference at 1 A rated current is within normal manufacturing tolerance for standard bridge rectifier technology and does not affect circuit functionality in typical applications.

Q: Why is reverse leakage lower in the ABS8U (5 µA vs. 10 µA)?

A: Lower reverse leakage indicates improved device characteristics and does not create compatibility issues. The ABS8U performs equal to or better than the original specification.

Q: Is the ABS8U suitable for new designs?

A: Yes. The ABS8U is an active product with current manufacturing support and modern compliance certifications (RoHS3, REACH), making it suitable for both legacy replacement and new design applications.

Q: What packaging format is available for the ABS8U?

A: The ABS8U is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly operations.

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