HS1MLH Equivalent & Substitute Parts

Part Overview

The HS1MLH is a 1000V, 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 This component is classified as not for new designs, indicating it has been superseded in the manufacturer's product portfolio. The HS1MLH operates with a reverse recovery time of 75 nanoseconds and is qualified to AEC-Q101 automotive standards. Due to its discontinued status, identification of functionally equivalent substitute components is necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

HS1MLH

Taiwan Semiconductor CorporationIn Stock: 1169HS1MLH Datasheet

Current PartRFQ

HS1MLWH

Taiwan Semiconductor CorporationIn Stock: 21092HS1MLWH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HS1MLH is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 1 A
• Reverse Recovery Time (trr): 75 ns
• Technology: Standard

Mechanical & Compliance Criteria:

• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

The HS1MLWH meets all core electrical specifications and maintains automotive-grade qualification with AEC-Q101 certification. While the HS1MLWH utilizes SOD-123W packaging (a variant of SOD-123), it preserves the same surface mount mounting type and footprint compatibility for standard applications. The substitute exhibits improved performance characteristics in reverse leakage current and junction temperature range, with active product status ensuring ongoing availability.

Parameter Comparison

Engineering Selection Recommendations

The HS1MLWH is the manufacturer-recommended substitute for the HS1MLH. Selection of the HS1MLWH is supported by the following factors:

Product Status: The HS1MLWH maintains active product status, ensuring long-term availability and supply chain continuity. The HS1MLH is designated not for new designs, indicating manufacturer discontinuation.

Compliance & Certification: Both components maintain identical automotive-grade classification and AEC-Q101 qualification, satisfying requirements for automotive and high-reliability applications. Both components are ROHS3 compliant and REACH unaffected.

Electrical Performance: The HS1MLWH delivers equivalent core electrical specifications across reverse voltage, forward current, forward voltage drop, and reverse recovery time. The substitute exhibits superior reverse leakage current performance (1 µA versus 5 µA at 1000 V) and lower junction capacitance (7 pF versus 15 pF at 4V, 1MHz).

Operating Temperature Range: The HS1MLWH extends the maximum junction temperature to 175°C, compared to 150°C for the HS1MLH, providing enhanced thermal margin in high-temperature applications.

Packaging Compatibility: The SOD-123W package is a surface mount variant compatible with standard SOD-123 footprints in typical PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the HS1MLWH be used as a direct replacement for the HS1MLH in existing designs?

A: The HS1MLWH is electrically and mechanically compatible with the HS1MLH across all critical parameters. Both components share identical reverse voltage (1000 V), forward current (1 A), forward voltage drop (1.7 V @ 1 A), and reverse recovery time (75 ns) specifications. The SOD-123W package is compatible with standard SOD-123 footprints. Verification of PCB layout and thermal design is required for specific applications.

Q: What are the key differences between HS1MLH and HS1MLWH?

A: The primary differences are product status, reverse leakage current, junction capacitance, and maximum junction temperature. The HS1MLWH is active (HS1MLH is not for new designs), exhibits lower reverse leakage (1 µA versus 5 µA), lower capacitance (7 pF versus 15 pF), and higher maximum junction temperature (175°C versus 150°C). Both maintain identical core electrical ratings and automotive qualification.

Q: Are both components qualified to the same automotive standards?

A: Yes. Both the HS1MLH and HS1MLWH are automotive-grade components qualified to AEC-Q101 and are ROHS3 compliant. Both are manufactured by Taiwan Semiconductor Corporation.

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

A: SOD-123W is a surface mount variant of the SOD-123 package. Both are surface mount packages suitable for automated assembly. The SOD-123W designation indicates a specific package variant. Footprint compatibility should be verified against PCB design specifications.

Q: Why is the HS1MLH marked as not for new designs?

A: The not for new designs designation indicates the HS1MLH has been superseded in the manufacturer's product portfolio. The HS1MLWH is the active replacement, offering equivalent or improved performance characteristics with assured long-term availability.

Q: Can the HS1MLWH handle higher temperatures than the HS1MLH?

A: The HS1MLWH supports a maximum junction temperature of 175°C, compared to 150°C for the HS1MLH. This provides an additional 25°C thermal margin in high-temperature operating environments.