HS1DLH Equivalent & Substitute Parts

Part Overview

The HS1DLH is a 200V, 1A fast recovery rectifier diode manufactured by Taiwan Semiconductor Corporation in SOD-123 surface mount packaging. This component is classified as not for new designs, indicating it has been superseded in the manufacturer's product line. The part operates across a junction temperature range of -55°C to 150°C and carries automotive-grade qualification under AEC-Q101. Due to its discontinued status, identification of functionally equivalent substitute components is necessary for ongoing maintenance, repair, and legacy system support applications.

Substiute Parts

HS1DLH

Taiwan Semiconductor CorporationIn Stock: 803HS1DLH Datasheet

Current PartRFQ

HS1DLWH

Taiwan Semiconductor CorporationIn Stock: 21225HS1DLWH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HS1DLH is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Reverse voltage rating: 200V minimum
• Average rectified current: 1A minimum
• Reverse recovery time: 50ns maximum
• Fast recovery speed classification: ≤ 500ns, > 200mA
• Automotive-grade qualification: AEC-Q101 required

Mechanical Equivalence Criteria:

• Surface mount technology
• Compatible package footprint and form factor
• Tape & Reel packaging for production environments

The HS1DLWH meets all specified electrical parameters and maintains automotive-grade AEC-Q101 qualification. While the substitute features a different package designation (SOD-123W versus SOD-123), both are surface mount rectifier diodes with compatible mounting characteristics. The substitute part is currently in active production status, ensuring supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

The HS1DLWH is the direct substitute for the HS1DLH based on electrical parameter equivalence and compliance alignment. Both components maintain identical reverse voltage (200V), average rectified current (1A), and reverse recovery time (50ns) specifications. Both carry automotive-grade AEC-Q101 qualification, ensuring suitability for automotive applications.

The primary distinction between the parts is product status: the HS1DLH is designated not for new designs, while the HS1DLWH is in active production. This status difference, combined with the HS1DLWH's extended junction temperature range (-55°C to 175°C versus -55°C to 150°C), positions the substitute as the preferred component for ongoing system support and replacement scenarios.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements. The forward voltage specification shows a minor increase in the substitute (1V versus 950mV at 1A), and reverse leakage current is lower in the substitute (1µA versus 5µA at 200V), representing improved performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the HS1DLWH directly replace the HS1DLH in existing circuit designs?

A: Yes. The HS1DLWH meets all critical electrical specifications of the HS1DLH, including reverse voltage rating, average rectified current, and reverse recovery time. Both components are automotive-grade AEC-Q101 qualified and surface mount technology. Verification of PCB footprint compatibility with the SOD-123W package is required prior to implementation.

Q: What is the difference between SOD-123 and SOD-123W packaging?

A: SOD-123 and SOD-123W are both surface mount rectifier diode packages. The primary difference is the physical form factor and footprint dimensions. SOD-123W represents a wider variant. PCB layout and assembly equipment compatibility must be confirmed before substitution.

Q: Why is the HS1DLH marked as not for new designs?

A: This designation indicates the manufacturer has discontinued active development and promotion of this part number. The HS1DLWH represents the active production equivalent, ensuring long-term supply chain availability and manufacturer support.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Both carry AEC-Q101 automotive qualification. No compliance barriers exist for substitution.

Q: What is the significance of the extended temperature range in the HS1DLWH?

A: The HS1DLWH operates across -55°C to 175°C, compared to -55°C to 150°C for the HS1DLH. This extended upper temperature limit provides additional thermal margin in high-temperature operating environments, though both parts satisfy standard automotive temperature requirements.

Q: How do the reverse leakage current specifications compare?

A: The HS1DLWH exhibits lower reverse leakage current (1µA at 200V) compared to the HS1DLH (5µA at 200V). This represents improved leakage performance in the substitute part.

Q: Is inventory availability a consideration for substitution?

A: The HS1DLWH is in active production with significantly higher inventory levels (21,171 pcs) compared to the HS1DLH (757 pcs). This availability difference supports the use of the substitute for ongoing procurement and system support.