SS14LHMHG Equivalent & Substitute Parts

Part Overview

The SS14LHMHG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 40 V DC reverse voltage and 1 A average rectified current in a Sub SMA surface mount package. This component is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Substitute parts become necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative electrical or thermal characteristics. The SS14LHMHG has identified equivalent and similar alternatives that maintain functional compatibility within specified electrical parameters.

Substiute Parts

SS14LHMHG

Taiwan Semiconductor CorporationIn Stock: 1044SS14LHMHG Datasheet

Current PartRFQ

SS14L

Taiwan Semiconductor CorporationIn Stock: 23363SS14L Datasheet

Parametric EquivalentRFQ

SS1FL4HM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 33227SS1FL4HM3/H Datasheet

SimilarRFQ

SS2FL4-M3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 23505SS2FL4-M3/H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the SS14LHMHG is based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 40 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Package / Case: DO-219AB (Sub SMA)
• Mounting Type: Surface Mount
• Technology: Schottky
• Operating Temperature Range: -55°C minimum to 125°C minimum

Parametric Equivalent Classification: Parts meeting all primary criteria with identical electrical ratings and package specifications are classified as parametric equivalents. The SS14L from Taiwan Semiconductor Corporation qualifies as a parametric equivalent, maintaining 40 V, 1 A specifications and DO-219AB packaging.

Similar Manufacturer Classification: Parts from alternative manufacturers (Vishay General Semiconductor - Diodes Division) that meet or exceed the primary electrical specifications while maintaining DO-219AB packaging are classified as similar manufacturers. The SS1FL4HM3/H and SS2FL4-M3/H represent this category. The SS1FL4HM3/H maintains 40 V, 1 A ratings with improved forward voltage characteristics. The SS2FL4-M3/H provides 40 V at 2 A current rating, exceeding the 1 A requirement and suitable for applications requiring higher current capacity.

Parameter Comparison

Engineering Selection Recommendations

SS14L (Parametric Equivalent): The SS14L from Taiwan Semiconductor Corporation provides direct parametric equivalence to the SS14LHMHG with identical electrical specifications and packaging. However, this part carries "Not For New Designs" product status, indicating it is in mature or declining lifecycle phase. Selection of SS14L is appropriate for legacy system maintenance, repair, or continuation of existing production runs where design stability is prioritized. This part maintains full compliance with ROHS3 and carries equivalent electrical performance.

SS1FL4HM3/H (Similar - Vishay): The SS1FL4HM3/H from Vishay General Semiconductor - Diodes Division is an Active product with AEC-Q101 automotive qualification matching the main part. This substitute offers improved forward voltage characteristics (500 mV @ 1 A versus 550 mV @ 1 A) and lower reverse leakage current (200 µA @ 40 V versus 400 µA @ 40 V). The extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C) provides additional thermal margin. This part is suitable for new designs requiring automotive-grade Schottky rectification at 40 V, 1 A specifications.

SS2FL4-M3/H (Similar - Vishay): The SS2FL4-M3/H from Vishay General Semiconductor - Diodes Division is an Active product rated for 40 V, 2 A operation. This part exceeds the 1 A current requirement of the main part and is applicable to designs requiring higher current capacity within the same voltage class. The extended operating temperature range (-55°C ~ 150°C) and lower reverse leakage current (220 µA @ 40 V) provide performance advantages. Selection of this part is appropriate when circuit requirements permit the higher current rating and when thermal performance benefits from the Vishay eSMP® series characteristics.

Frequently Asked Questions (FAQ)

Q: Can SS14L be used as a direct replacement for SS14LHMHG?

A: Yes, the SS14L provides direct parametric equivalence with identical 40 V, 1 A electrical specifications and DO-219AB packaging. However, SS14L carries "Not For New Designs" status, making it suitable only for legacy system support and existing production continuation rather than new circuit development.

Q: What are the key differences between SS1FL4HM3/H and the main part SS14LHMHG?

A: Both parts maintain 40 V, 1 A specifications and DO-219AB packaging. The SS1FL4HM3/H offers lower forward voltage (500 mV versus 550 mV @ 1 A), lower reverse leakage current (200 µA versus 400 µA @ 40 V), and extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C). Both carry AEC-Q101 automotive qualification and Active product status.

Q: When should SS2FL4-M3/H be selected instead of SS14LHMHG?

A: The SS2FL4-M3/H is selected when circuit requirements exceed 1 A current capacity. This part is rated for 2 A average rectified current at 40 V, providing higher current handling capability within the same voltage class. The DO-219AB package remains identical, ensuring mechanical compatibility.

Q: Are all substitute parts automotive-qualified?

A: The SS14LHMHG and SS1FL4HM3/H both carry AEC-Q101 automotive qualification. The SS14L and SS2FL4-M3/H do not specify automotive grade in the provided parameters. For applications requiring automotive qualification, SS1FL4HM3/H is the appropriate substitute.

Q: What is the significance of the operating temperature range differences?

A: The SS14LHMHG operates from -55°C to 125°C junction temperature. Both Vishay alternatives (SS1FL4HM3/H and SS2FL4-M3/H) extend the upper limit to 150°C, providing 25°C additional thermal margin. This extended range is beneficial in high-temperature applications or designs with limited thermal management.

Q: Are all parts RoHS3 compliant?

A: Yes, all listed parts (SS14LHMHG, SS14L, SS1FL4HM3/H, and SS2FL4-M3/H) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, all substitute parts use identical DO-219AB (Sub SMA) packaging and surface mount mounting type, ensuring mechanical and footprint compatibility on PCBs designed for the SS14LHMHG.

Q: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This specification indicates that all listed parts have fast recovery time characteristics of 500 nanoseconds or less when switching currents exceeding 200 mA, making them suitable for high-frequency rectification applications.