Taiwan Semiconductor Corporation HER156GH

Overview

HER156GH from Taiwan Semiconductor is a high-efficiency, AEC-Q101-qualified ultrafast recovery rectifier diode in DO-204AC (DO-15) package, rated for 600 V repetitive peak reverse voltage (VRRM), 1.5 A average forward current (IF), and 50 A surge current (IFSM). It delivers low forward voltage (VF = 1.7 V at 1.5 A, 25°C), 75 ns reverse recovery time (trr), and 20 pF junction capacitance-optimized for switching-mode power supplies and automotive DC-DC converters.

For engineers reviewing the HER156GH datasheet, HER156GH pinout, HER156GH application, or HER156GH equivalent, key selection criteria include its AEC-Q101 qualification, 600 V VRRM rating, 75 ns trr performance, DO-15 mechanical compatibility, and thermal resistance (RθJA = 60°C/W) in high-reliability power conversion designs.

Technical Context

This ultrafast rectifier uses a glass-passivated silicon junction to achieve low conduction loss and fast switching behavior. Its 75 ns reverse recovery time and 1.7 V forward voltage at rated current support high-frequency operation in SMPS topologies without excessive switching loss or thermal stress.

The device operates across –55°C to +150°C junction temperature range and features pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance-critical for automotive under-hood and industrial power applications requiring long-term reliability.

Key Specifications

Pinout & Package

HER156GH is housed in a DO-204AC (DO-15) axial-leaded package with cathode indicated by a band. Leads are pure tin-plated and solderable per J-STD-002. Polarity is unambiguous: banded end = cathode; opposite end = anode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1L60S and MUR160, HER156GH uniquely combines AEC-Q101 qualification, 1.5 A continuous rating, and DO-15 form factor-enabling drop-in replacement in automotive and industrial designs where reliability, current headroom, and board-level thermal management are prioritized over minimal trr.

Availability

HER156GH is available at Aetrix Electronics and suitable for automotive power modules, industrial SMPS, LED driver power stages, and UPS systems requiring stable component supply with guaranteed AEC-Q101 compliance and long-term production continuity.

Supply support for HER156GH 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 automotive, industrial, and consumer markets since 1979.

The HER15xG series was designed specifically for high-reliability, high-efficiency rectification in automotive and industrial switching power supplies-emphasizing AEC-Q101 qualification, ultrafast recovery, and robust thermal performance in compact DO-15 packages.

FAQ

What is the maximum junction temperature for HER156GH?

The HER156GH has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version I2105). This rating applies under continuous operation with proper PCB thermal design-specifically, ≥2.5 cm² of 2-oz copper pour per lead-and allows reliable use in under-hood automotive environments where ambient temperatures reach 105°C.

Is HER156GH pin-compatible with HER156G?

Yes, HER156GH shares identical DO-204AC (DO-15) mechanical dimensions, lead spacing, polarity marking (cathode band), and electrical pinout with HER156G. The "H" suffix denotes AEC-Q101 qualification only; all electrical, thermal, and packaging specifications-including VRRM (600 V), IF (1.5 A), trr (75 ns), and VF (1.7 V)-are identical between HER156G and HER156GH.

What does the "H" suffix mean in HER156GH?

The "H" suffix in HER156GH indicates formal AEC-Q101 qualification per the Taiwan Semiconductor ordering information table (Version I2105). This certification confirms rigorous stress testing-including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-making HER156GH suitable for automotive powertrain and body electronics where zero-defect reliability is mandated.

Can HER156GH replace a standard 1N5408 in a 600 V application?

No-HER156GH is not a direct replacement for 1N5408. While both are DO-15 rectifiers, 1N5408 is a general-purpose diode with 3 µs trr and 1.2 V VF, whereas HER156GH is an ultrafast rectifier with 75 ns trr and 1.7 V VF. Substituting HER156GH may cause increased conduction loss and require layout review for EMI filtering due to faster switching edges.

What is the reverse leakage current of HER156GH at 125°C?

At TJ = 125°C and rated reverse voltage (VR = 600 V), HER156GH exhibits a maximum reverse leakage current (IR) of 150 µA, as specified in the Electrical Specifications table (Version I2105). This value is measured using a 30 ms pulse test and reflects stable performance under elevated thermal stress typical in automotive under-hood deployments.