Taiwan Semiconductor Corporation 1T7GH

Overview

1T7GH from Taiwan Semiconductor is a single-die, AEC-Q101-qualified standard rectifier diode rated for 1000 V repetitive peak reverse voltage (V_RRM), 1 A average forward current (I_F), and 30 A non-repetitive surge current (I_FSM). It features low forward voltage (1.0 V max at 1 A, 25°C), 10 pF junction capacitance, and operates up to +150°C junction temperature in the TS-1 package - used in automotive-grade DC/DC converters and switching inverters.

For engineers reviewing the 1T7GH datasheet, 1T7GH pinout, 1T7GH application, or 1T7GH equivalent, key selection factors include its 1000 V V_RRM, AEC-Q101 qualification, TS-1 miniature package with cathode-band polarity marking, 100°C/W junction-to-ambient thermal resistance, and compatibility with J-STD-002 soldering standards.

Technical Context

This device is a silicon planar epitaxial PN-junction standard rectifier optimized for high-voltage, medium-current switching applications. Its single-die TS-1 construction delivers stable reverse leakage (<5 µA at 25°C, <100 µA at 125°C) and controlled forward conduction with minimal voltage drop across the full 50–1000 V family range.

The 1T7GH variant is specifically characterized for 1000 V V_RRM and 700 V RMS reverse voltage, with thermal performance defined by R_θJA = 100°C/W and operation over –55°C to +150°C ambient and junction ranges - supporting reliability-critical automotive and industrial power conversion designs.

Key Specifications

Pinout & Package

Package: TS-1 - 3 mm miniature molded plastic case with pure tin-plated leads, UL 94V-0 rated compound, cathode polarity indicated by band, weight ≈ 0.200 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R06 and MUR1100E, the 1T7GH uniquely combines 1000 V rating, AEC-Q101 qualification, low 1.0 V V_F, and TS-1 miniaturization - making it the only option qualified for space- and reliability-constrained automotive power stages.

Availability

1T7GH is available at Aetrix Electronics and suitable for automotive on-board chargers, industrial DC/DC auxiliary supplies, and solar microinverter DC link protection requiring stable component supply and long-lifecycle support.

Supply support for 1T7GH 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 1T1G–1T7G series was designed as a family of AEC-Q101-qualified standard rectifiers targeting high-reliability, high-voltage power conversion in automotive electrification and industrial automation systems.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the 1T7GH?

The 1T7GH has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V, as confirmed in the Absolute Maximum Ratings table on page 2 of the H2104 datasheet. This rating allows the 1T7GH to safely block reverse voltages up to 1000 V in continuous operation, making it suitable for high-voltage DC/DC and AC/DC applications where system-level transients may approach this threshold.

Is the 1T7GH AEC-Q101 qualified, and what does that mean for automotive use?

Yes, the "H" suffix in 1T7GH explicitly denotes AEC-Q101 qualification per the Ordering Information section (page 3). This means the 1T7GH has passed accelerated stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood and powertrain-related automotive applications where reliability under thermal and mechanical stress is critical.

What is the forward voltage (V_F) specification for the 1T7GH at rated current?

The 1T7GH has a maximum forward voltage (V_F) of 1.0 V at 1 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table for the 1T3G–1T7G group. This value is measured under pulse conditions (PW = 0.3 ms), ensuring low conduction loss and reduced self-heating during steady-state operation in power conversion circuits.

Which package type does the 1T7GH use, and what are its mechanical characteristics?

The 1T7GH uses the TS-1 package: a 3 mm miniature molded plastic case with pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability rating, and cathode polarity indicated by a visible band. Its approximate weight is 0.200 g, and it meets JESD 201 Class 2 whisker resistance - enabling reliable automated assembly and high-density PCB placement.

Does the 1T7GH have a specified junction-to-ambient thermal resistance (R_θJA)?

Yes, the 1T7GH has a typical junction-to-ambient thermal resistance (R_θJA) of 100°C/W, as listed in the Thermal Performance section (page 2). This value assumes standard JEDEC test conditions (single device on FR-4 board with 1 cm² copper pad) and informs thermal design margins - for example, at 1 A and 1.0 V V_F, power dissipation is ~1 W, resulting in ~100°C rise above ambient without additional heatsinking.