Taiwan Semiconductor Corporation HT14G

Overview

HT14G from Taiwan Semiconductor is a 300V, 1A glass-passivated high-efficiency rectifier diode in TS-1 package, featuring 1.0V forward voltage at 1A/25°C, 30A surge capability, and 50ns reverse recovery time - used in DC-DC converters and freewheeling paths in automotive power supplies.

For engineers reviewing the HT14G datasheet, HT14G pinout, HT14G application, or HT14G equivalent, key selection criteria include VRRM=300V, VF=1.0V @1A, trr=50ns, IFSM=30A, and TS-1 thermal resistance of 95°C/W for thermal design validation and reliability-critical switching power stages.

Technical Context

The HT14G is a single-die, standard recovery silicon rectifier optimized for high-efficiency switching-mode power conversion. Its 300V repetitive peak reverse voltage (VRRM) and 50ns reverse recovery time (trr) support operation in medium-voltage, moderate-frequency flyback and buck-derived topologies.

Thermally, it uses a TS-1 package with pure tin-plated leads and UL 94V-0 molding compound, delivering R_θJA = 95°C/W under standard JEDEC conditions - enabling 1A continuous conduction without forced cooling in ambient temperatures up to 75°C.

Key Specifications

Pinout & Package

TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode band marking; lead-free, RoHS-compliant, UL 94V-0 molded body; dimensions per Taiwan Semiconductor Package Outline Drawing TS-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-efficiency rectifier applications.

Compared with STTH1R03U and SB130, the HT14G offers balanced VF/trr trade-off in surface-mount TS-1 format, superior thermal resistance over DO-41, and AEC-Q101 qualification path - making it optimal for new automotive and industrial SMT power designs requiring reliability and manufacturability.

Availability

HT14G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and automotive body control module power supplies requiring stable component supply and long-term lifecycle assurance.

Supply support for HT14G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and automotive-qualified components.

The HT11G–HT18G series was designed specifically for high-reliability, high-efficiency rectification in automotive and industrial switching power supplies - emphasizing robust surge handling, low conduction loss, and AEC-Q101 readiness.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) for HT14G?

The HT14G has a VRRM rating of 300 V, verified per Taiwan Semiconductor's H2104 datasheet revision. This value defines the highest reverse voltage the device can block repeatedly without breakdown. It is critical for selecting appropriate input/output voltage margins in flyback, boost, and freewheeling circuits - for example, ensuring ≥2× safety margin over nominal 150V bus applications. The HT14G must not be operated beyond this rating under any condition.

What is the forward voltage (VF) of HT14G at 1A and 25°C?

The HT14G exhibits a typical forward voltage of 1.0 V at IF = 1 A and TJ = 25°C, as specified in the Electrical Specifications table of the official datasheet. This low VF directly reduces conduction losses - for instance, yielding only 1.0 W dissipation at full load versus 1.15 W for a 1.15V diode - supporting thermally constrained layouts. Pulse test conditions (PW = 0.3 ms) ensure measurement accuracy under real switching conditions.

Does HT14G have AEC-Q101 qualification?

The base HT14G is not AEC-Q101 qualified, but its variant HT14GH is explicitly listed as AEC-Q101 qualified in the Ordering Information section of the datasheet. HT14GH undergoes full automotive stress testing including temperature cycling, HTRB, and ESD per AEC-Q101 Rev D. For automotive body electronics or ADAS power supplies, HT14GH - not HT14G - must be specified to meet OEM reliability requirements.

What package type does HT14G use, and what are its key mechanical properties?

HT14G uses the TS-1 surface-mount package, defined in Taiwan Semiconductor's Package Outline Drawing TS-1. Key properties include UL 94V-0 flammability-rated epoxy molding, pure tin-plated leads compliant with J-STD-002 solderability, and cathode polarity indicated by a visible band. Its 95°C/W junction-to-ambient thermal resistance enables 1A operation at 75°C ambient without heatsinking - confirmed via JEDEC-standard test board conditions.

What is the reverse recovery time (trr) of HT14G, and how is it measured?

The HT14G has a maximum reverse recovery time (trr) of 50 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the datasheet's Electrical Specifications table. This parameter reflects the time required for minority carriers to clear after forward conduction ceases - directly impacting switching loss and EMI in 100–500 kHz converters. The 50 ns value positions HT14G between standard and ultrafast rectifiers, balancing speed and forward loss.