Taiwan Semiconductor Corporation TUAS6GH

Overview

TUAS6GH from Taiwan Semiconductor is a 6A, 400V AEC-Q101-qualified standard surface-mount rectifier in TO-277A (SMPC4.6U) package, featuring glass passivated junction, 140A surge capability, wettable flanks, and J-STD-020 Level 1 moisture sensitivity - deployed in automotive DC-DC converters and LED lighting systems.

For engineers reviewing the TUAS6GH datasheet, TUAS6GH pinout, TUAS6GH application, or TUAS6GH equivalent, key selection criteria include repetitive peak reverse voltage (400 V), forward voltage at 6A/25°C (0.98–1.10 V), junction-to-lead thermal resistance (5 °C/W), AEC-Q101 qualification, and TO-277A mechanical compatibility with automated SMT placement.

Technical Context

This single-die standard rectifier uses a glass-passivated PN junction optimized for high-reliability automotive power conversion. Its 400 V V_RRM, 6 A average forward current, and 140 A 8.3 ms surge rating support robust operation under transient load conditions in 12 V/24 V vehicle subsystems.

Thermal performance is defined by R_θJL = 5 °C/W and R_θJA = 45 °C/W on a 16 mm × 16 mm Cu pad PCB. Junction capacitance is 43 pF at 1 MHz / 4.0 V reverse bias, consistent with TUAS6DH–TUAS6JH variants.

Key Specifications

Pinout & Package

Package: TO-277A (SMPC4.6U), surface-mount, single-anode/single-cathode configuration with cathode band polarity marking and matte tin-plated wettable flank leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-6EWH04-M3 and MUR640CT, the TUAS6GH uniquely combines AEC-Q101 qualification, TO-277A SMT compatibility, wettable flanks, and 43 pF junction capacitance - making it the only option meeting full automotive production requirements without footprint or process compromise.

Availability

TUAS6GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED lighting drivers, and start-stop system power supplies requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TUAS6GH 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 TUAS6GH belongs to TSC's AEC-Q101-qualified surface-mount rectifier family, engineered specifically for high-reliability 12 V/24 V automotive power conversion where thermal robustness, surge immunity, and automated assembly compatibility are mandatory.

FAQ

What is the peak repetitive reverse voltage rating for TUAS6GH?

The TUAS6GH has a peak repetitive reverse voltage (V_RRM) rating of 400 V, verified per Taiwan Semiconductor's A2111 datasheet. This value defines the maximum reverse-bias voltage the device can block continuously without breakdown. It is critical for selecting appropriate snubber sizing and ensuring safe operation in 24 V automotive systems with load-dump transients up to 300 V. The TUAS6GH must not be operated beyond this limit in any design.

Is TUAS6GH qualified for automotive applications?

Yes, the TUAS6GH is explicitly AEC-Q101 qualified per its official datasheet (Version A2111). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress test (UHAST). The TUAS6GH meets these requirements as a single-die standard rectifier in TO-277A packaging - confirming suitability for under-hood and cabin automotive power systems.

What is the forward voltage drop of TUAS6GH at 6 A and 25°C?

The TUAS6GH exhibits a forward voltage (V_F) of 0.98 V (typical) to 1.10 V (maximum) at 6 A and 25°C, as specified in the Electrical Specifications table. This parameter directly affects conduction losses and thermal rise in high-current rectification stages. At 125°C junction temperature, V_F drops to 0.88 V (typical), reflecting the negative temperature coefficient of silicon PN junctions - an important consideration for thermal design margining.

Does TUAS6GH have wettable flank leads?

Yes, the TUAS6GH features wettable flank leads as confirmed in the Mechanical Data section of the A2111 datasheet. These leads extend vertically down the side of the TO-277A (SMPC4.6U) package, enabling automated optical inspection (AOI) of solder fillet formation during reflow. This feature supports zero-defect manufacturing in automotive electronics production lines and eliminates manual visual inspection of bottom-side terminations.

What is the junction-to-lead thermal resistance (R_θJL) of TUAS6GH?

The TUAS6GH has a junction-to-lead thermal resistance (R_θJL) of 5 °C/W, measured per JEDEC standards on a 16 mm × 16 mm copper pad PCB. This value enables precise thermal modeling of heat transfer from the die to the PCB copper, supporting accurate prediction of junction temperature rise under continuous 6 A load. It is significantly lower than typical R_θJA (45 °C/W), highlighting the benefit of direct lead conduction over ambient convection.