Taiwan Semiconductor Corporation HS5B

Overview

HS5B from Taiwan Semiconductor is a 5A, 100V high-efficiency surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (1.00 V at 5A), and 150A surge capability - used in switching-mode power supplies for telecom and computing equipment.

For engineers reviewing the HS5B datasheet, HS5B pinout, HS5B application, or HS5B equivalent, key selection criteria include repetitive peak reverse voltage (100 V), forward voltage at rated current, thermal resistance (60 °C/W), reverse recovery time (≤50 ns), and moisture sensitivity level (J-STD-020 Level 1).

Technical Context

This single-die standard recovery rectifier operates with a maximum junction temperature of 150°C and supports automated SMT placement. Its glass-passivated chip junction ensures stable performance under thermal cycling and humidity exposure.

The device exhibits typical junction capacitance of 80 pF at 1 MHz and 4.0 V reverse bias, and reverse recovery time ≤50 ns under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A test conditions - enabling use in high-frequency DC/DC converters up to several hundred kHz.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, 0.210 g weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH5L06 and MBR5100, the HS5B offers optimal balance of low VF (1.00 V), SMT compatibility, 150°C operation, and ultra-low IR - making it preferred for thermally demanding, high-reliability 100 V rectification where Schottky leakage or through-hole assembly are unacceptable.

Availability

HS5B is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server power supply output stages, and industrial motor drive auxiliary supplies requiring stable component supply across multi-year production cycles.

Supply support for HS5B 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, serving global industrial, computing, and telecom markets since 1979.

The HS5B belongs to TSC's HS5x family of high-efficiency SMC-packaged rectifiers designed specifically for high-frequency switching power conversion in space- and thermally-constrained applications.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) rating for HS5B?

The HS5B has a VRRM rating of 100 V, meaning it can reliably block up to 100 V of reverse voltage in repetitive operation. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version K2102) and defines the upper limit for safe use in DC/DC converter outputs or freewheeling paths where reverse voltage transients remain below this threshold. Exceeding 100 V risks avalanche breakdown and permanent damage to the HS5B.

What is the forward voltage drop (VF) of HS5B at its rated 5 A current?

The HS5B exhibits a maximum forward voltage drop of 1.00 V at 5 A and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the conduction loss baseline for thermal design. At elevated temperatures or higher currents, VF increases slightly - e.g., ~1.15 V at 5 A and 125°C - which must be accounted for in worst-case power dissipation calculations for the HS5B.

Is HS5B suitable for high-frequency switching applications like LLC resonant converters?

Yes, the HS5B is suitable for high-frequency switching applications including LLC resonant converters, due to its ≤50 ns reverse recovery time (trr) and 80 pF junction capacitance at 1 MHz. These parameters enable clean commutation in topologies operating up to ~500 kHz. However, for frequencies above 1 MHz or where zero-voltage switching margin is tight, designers should verify turn-off behavior under actual circuit conditions, as the HS5B is a standard recovery rectifier - not an ultrafast or soft-recovery type.

What package does HS5B use, and what are its key mechanical features?

The HS5B uses the DO-214AB (SMC) surface-mount package: 7.11 mm × 6.22 mm × 1.70 mm, with matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability rating, and JESD201 Class 2 whisker resistance. Its cathode is marked by a visible band, and it carries a moisture sensitivity level (MSL) of Level 1 - permitting unlimited floor life and eliminating pre-reflow baking requirements for the HS5B.

How does HS5B compare to HS5A and HS5D in terms of voltage rating and forward voltage?

The HS5B shares identical forward voltage (1.00 V @ 5 A) and thermal specs with HS5A and HS5D, but differs in VRRM: HS5A = 50 V, HS5B = 100 V, HS5D = 200 V. All three use the same DO-214AB package and construction. Therefore, HS5B provides double the reverse voltage margin of HS5A while maintaining the same conduction loss - making it the preferred choice for 100 V-class outputs where HS5A would be under-rated and HS5D unnecessarily over-specified.