Equivalent & Substitute Parts for HS1ALH

Part Overview

The Taiwan Semiconductor Corporation HS1ALH is categorized under Diodes, Rectifiers. It is specified as a 50 V, 1 A, fast recovery surface-mount diode in a Sub SMA (SOD-123) package, designed for automotive applications (AEC-Q101 qualified). The HS1ALH features a reverse recovery time of 50 ns and a maximum forward voltage of 950 mV at 1A. This product is listed as "Not For New Designs," necessitating the identification of equivalent substitute parts for new projects and ongoing supply continuity.

Substiute Parts

HS1ALH

Taiwan Semiconductor CorporationIn Stock: 1059HS1ALH Datasheet

Current PartRFQ

HS1DLWH

Taiwan Semiconductor CorporationIn Stock: 21225HS1DLWH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is established by exact match or exceedance of the following key parameters: diode category (rectifiers), mounting type (surface mount), average rectified current (1A), reverse recovery time (≤500ns), voltage ratings, package/case, automotive qualification (AEC-Q101), and environmental compliance (RoHS3, REACH). Package compatibility and equivalent or superior electrical characteristics are required to ensure functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

HS1ALH is listed as Not For New Designs. Substitute HS1DLWH is listed as Active with equivalent or higher ratings in all shared parameters. Both diodes are AEC-Q101 qualified and are ROHS3 and REACH compliant. For ongoing and new designs requiring comparable electrical, mechanical, and compliance parameters in automotive surface mount rectifiers, HS1DLWH fulfills the substitution requirements based strictly on the input specifications.

Frequently Asked Questions (FAQ)

Q: What are the primary criteria for selecting a substitute diode for HS1ALH?
A: The main criteria include diode category, current handling, reverse and forward voltage ratings, reverse recovery speed, mechanical package compatibility, automotive qualification (AEC-Q101), and RoHS/REACH compliance.

Q: Is the package type for HS1DLWH compatible with designs using HS1ALH?
A: HS1ALH uses the SOD-123 (Sub SMA) package; HS1DLWH uses SOD-123W. Package compatibility should be confirmed according to the design footprint as defined in product datasheets.

Q: Do both parts have the same automotive and environmental qualifications?
A: Both HS1ALH and HS1DLWH are AEC-Q101 qualified, ROHS3 compliant, and REACH unaffected.

Q: Can the substitute diode be used in automotive applications?
A: Both parts are designated as automotive grade with AEC-Q101 qualification.

Q: How does the reverse recovery time compare between the two parts?
A: Both diodes have a specified reverse recovery time (trr) of 50 ns.

Q: Is there a difference in the average rectified current rating?
A: Both HS1ALH and HS1DLWH are rated for 1A average rectified current.

Q: Are there any differences in voltage ratings?
A: HS1DLWH has a higher reverse voltage rating (200 V) compared to HS1ALH (50 V), which falls within substitution criteria if the design allows.