HS1BL Equivalent & Substitute Parts

Part Overview

The HS1BL is a fast recovery rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 1 A average rectified current. It features a 50 ns reverse recovery time and is packaged in SOD-123 surface mount configuration. The HS1BL carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identification of equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where the original component specification must be maintained or enhanced.

Substiute Parts

HS1BL

Taiwan Semiconductor CorporationIn Stock: 937HS1BL Datasheet

Current PartRFQ

HS1DLW

Taiwan Semiconductor CorporationIn Stock: 20844HS1DLW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HS1BL with the HS1DLW is permissible based on the following electrical and mechanical compatibility criteria:

Matching Parameters:

• Current - Average Rectified (Io): Both rated at 1 A
• Reverse Recovery Time (trr): Both specified at 50 ns
• Speed Classification: Both Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Mounting Type: Both Surface Mount
• Technology: Both Standard rectifier diodes
• RoHS Status: Both ROHS3 Compliant
• REACH Status: Both REACH Unaffected
• ECCN Classification: Both EAR99
• HTSUS Code: Both 8541.10.0080

Enhanced Parameters in HS1DLW:

• Voltage - DC Reverse (Vr) (Max): 200 V (versus 100 V in HS1BL)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 1 A (versus 950 mV in HS1BL)
• Current - Reverse Leakage @ Vr: 1 µA @ 200 V (versus 5 µA @ 100 V in HS1BL)
• Capacitance @ Vr, F: 16 pF @ 4V, 1MHz (versus 20 pF in HS1BL)
• Operating Temperature - Junction: -55 to 175°C (versus -55 to 150°C in HS1BL)
• Product Status: Active (versus Not For New Designs)

Package Consideration: The HS1DLW uses SOD-123W packaging, which is mechanically compatible with SOD-123 footprints in standard PCB designs.

Parameter Comparison

Engineering Selection Recommendations

The HS1DLW serves as a direct substitute for the HS1BL in applications requiring equivalent or enhanced performance. Selection of the HS1DLW is supported by the following factors:

Product Status Alignment: The HS1DLW maintains Active product status, ensuring continued availability and manufacturer support, whereas the HS1BL is designated Not For New Designs.

Regulatory Compliance: Both components maintain identical RoHS3 and REACH compliance certifications, with matching ECCN and HTSUS classifications, ensuring no regulatory barriers to substitution.

Electrical Compatibility: The HS1DLW provides enhanced reverse voltage rating (200 V versus 100 V), lower reverse leakage current, and extended operating temperature range, all while maintaining identical current rating and recovery time specifications. These enhancements provide design margin without introducing incompatibility.

Mechanical Compatibility: SOD-123W packaging is footprint-compatible with standard SOD-123 PCB layouts, permitting direct substitution without circuit board redesign.

Inventory Availability: The HS1DLW maintains significantly higher stock levels (20,769 pcs) compared to the HS1BL (861 pcs), supporting production continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the HS1DLW directly replace the HS1BL without PCB modifications?

A: Yes. The SOD-123W package is mechanically compatible with SOD-123 footprints. No circuit board redesign is required for substitution.

Q: What are the key electrical differences between these parts?

A: The HS1DLW provides doubled reverse voltage rating (200 V versus 100 V), lower reverse leakage current (1 µA versus 5 µA), and extended junction temperature range (-55 to 175°C versus -55 to 150°C). Current rating, recovery time, and forward voltage characteristics remain equivalent or comparable.

Q: Are there any compliance concerns with using the HS1DLW as a substitute?

A: No. Both components maintain identical RoHS3 and REACH compliance status, with matching ECCN and HTSUS classifications. Substitution introduces no regulatory compliance issues.

Q: Why is the HS1BL marked "Not For New Designs"?

A: This designation indicates the manufacturer has superseded the HS1BL in its product line. The HS1DLW represents the active equivalent offering enhanced specifications and continued manufacturer support.

Q: Does the higher reverse voltage rating of the HS1DLW affect circuit performance?

A: No. Higher reverse voltage rating provides additional design margin and does not degrade performance in applications designed for 100 V operation. The component operates safely within the original circuit specifications.

Q: What is the significance of the SOD-123W package designation?

A: SOD-123W is a surface mount package variant compatible with standard SOD-123 PCB layouts. The "W" designation indicates a wider lead configuration, but footprint compatibility with SOD-123 is maintained for standard applications.

Q: Is the HS1DLW suitable for high-temperature applications?

A: Yes. The HS1DLW supports junction temperatures up to 175°C, compared to 150°C for the HS1BL, providing enhanced thermal margin for elevated-temperature environments.