Taiwan Semiconductor Corporation HS3K

Overview

HS3K from Taiwan Semiconductor is a high-efficiency surface-mount silicon rectifier diode rated for 800 V repetitive peak reverse voltage (V_RRM), 3 A average forward current (I_F), and 150 A non-repetitive surge current (I_FSM). It features a low-profile DO-214AB (SMC) package, 1.7 V max forward voltage at 3 A/25°C, and 50 pF typical junction capacitance - optimized for switching-mode power supplies in telecom and computing infrastructure.

For engineers reviewing the HS3K datasheet, HS3K pinout, HS3K application, or HS3K equivalent, key selection criteria include its 800 V V_RRM, 75 ns reverse recovery time (t_rr), thermal resistance of 60 °C/W, RoHS/halogen-free compliance, and suitability for freewheeling and high-frequency rectification in compact, thermally constrained designs.

Technical Context

The HS3K is a single-die, glass-passivated, planar junction silicon rectifier designed for fast-switching operation in DC-DC converters and offline SMPS. Its 75 ns reverse recovery time and 50 pF junction capacitance support efficient high-frequency operation up to several hundred kHz.

Thermally, it sustains continuous operation from –55°C to +150°C junction temperature, with a junction-to-ambient thermal resistance of 60 °C/W under standard PCB mounting conditions - enabling reliable performance in convection-cooled industrial power stages without forced airflow.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 molding compound, 0.210 g typical weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EYH08-M3 and MUR380E, the HS3K offers superior thermal resistance (60 vs. ≥75 °C/W), tighter t_rr consistency across temperature, and halogen-free compliance - making it preferred for space-constrained, high-frequency, and environmentally regulated power designs.

Availability

HS3K is available at Aetrix Electronics and suitable for server PSUs, telecom DC-DC converters, and industrial motor drive auxiliary supplies requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.

Supply support for HS3K 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 diodes, MOSFETs, and LED drivers since 1979.

The HS3K belongs to TSC's HS3x high-efficiency rectifier family, engineered specifically for high-frequency switching power conversion in computing, communications, and industrial equipment where low V_F, fast t_rr, and robust thermal performance are critical.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for HS3K?

The HS3K has a maximum repetitive peak reverse voltage (V_RRM) of 800 V, as specified in the absolute maximum ratings table of the official Taiwan Semiconductor datasheet (Version K2102). This rating applies under standard operating conditions and defines the highest reverse voltage the device can block repeatedly without breakdown. The HS3K is part of the HS3A–HS3M series, where 'K' explicitly denotes the 800 V variant. Designers must maintain appropriate derating margins for reliability in real-world applications.

Does HS3K have a defined reverse recovery time (t_rr) and what is its value?

Yes, the HS3K has a specified reverse recovery time (t_rr) of 75 ns maximum, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This parameter is confirmed in the Electrical Specifications section of the Taiwan Semiconductor HS3x datasheet (Version K2102). The HS3K shares this t_rr value with HS3J and HS3M, distinguishing it from lower-voltage variants like HS3G (50 ns). This 75 ns value directly impacts switching loss and EMI in high-frequency converters.

What package type does HS3K use and is it RoHS compliant?

The HS3K uses the DO-214AB (SMC) surface-mount package, with matte tin-plated leads and UL 94V-0 compliant molding compound. It is RoHS compliant and halogen-free per IEC 61249-2-21, as stated in the Features section of the Taiwan Semiconductor datasheet (Version K2102). The device carries moisture sensitivity level 1 per J-STD-020, eliminating bake requirements prior to reflow. These attributes make HS3K suitable for lead-free assembly and environmentally regulated end equipment.

What is the forward voltage (V_F) of HS3K at 3 A and 25°C?

The forward voltage (V_F) of HS3K is 1.7 V maximum at I_F = 3 A and T_J = 25°C, per the Electrical Specifications table in the Taiwan Semiconductor HS3x datasheet (Version K2102). This value is shared with HS3J and HS3M and reflects worst-case conduction loss under nominal conditions. At elevated temperatures or lower currents, V_F decreases slightly - e.g., ~1.55 V at 1 A and 25°C - supporting accurate thermal modeling in the HS3K's target applications.

Can HS3K be used as a direct replacement for HS3J or HS3M in existing designs?

No - HS3K is not a direct replacement for HS3J or HS3M despite sharing the same package and many electrical parameters. While all three share identical V_RRM (800 V), I_F (3 A), t_rr (75 ns), and V_F (1.7 V), their marking codes, test screening, and minor process variations mean they are distinct orderable parts. Taiwan Semiconductor documents them separately in ordering tables and does not declare pin-to-pin or functional interchangeability. Substitution requires validation of leakage, thermal behavior, and long-term reliability per application requirements.