Taiwan Semiconductor Corporation TUAS6JH

Overview

TUAS6JH from Taiwan Semiconductor is a 6A, 600V AEC-Q101-qualified standard surface-mount rectifier in TO-277A (SMPC4.6U) package, featuring glass passivated junction, 140A surge capability, and wettable flanks for automated optical inspection-used in automotive DC-DC converters and car lighting snubbers.

For engineers reviewing the TUAS6JH datasheet, TUAS6JH pinout, TUAS6JH application, or TUAS6JH equivalent, key selection considerations include its 600V V_RRM, 0.98V forward voltage at 6A/25°C, 5°C/W junction-to-lead thermal resistance, AEC-Q101 qualification, and TO-277A mechanical compatibility with J-STD-002 solderability.

Technical Context

This single-die standard rectifier operates with a maximum junction temperature of 150°C and supports repetitive reverse voltages up to 600V. Its glass-passivated chip junction ensures robustness against moisture and contamination, while the wettable flank design enables reliable solder-joint inspection in automotive SMT lines.

Thermal performance is characterized by R_θJL = 5°C/W and R_θJC = 7.9°C/W on a 16mm × 16mm Cu pad test board. Electrical behavior includes 0.88V typical forward voltage at 6A/125°C and ≤5µA reverse leakage at 25°C under rated VR.

Key Specifications

Pinout & Package

TO-277A (SMPC4.6U) surface-mount package with 3-terminal configuration: Anode, Cathode, and exposed cathode tab (common thermal/electrical path). Matte tin-plated leads meet J-STD-002 solderability; polarity indicated by cathode band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-6EWH06-M3, TUAS6JH provides guaranteed automotive qualification and lower thermal resistance; versus MUR660S, it delivers significantly lower forward voltage for improved efficiency in hard-switched applications, at the expense of slower recovery.

Availability

TUAS6JH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car LED lighting drivers, and engine control unit power supplies requiring stable component supply with AEC-Q101 assurance and TO-277A footprint consistency.

Supply support for TUAS6JH 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 devices, and automotive-qualified components.

The TUAS6JH belongs to TSC's AEC-Q101-certified standard rectifier family designed specifically for high-reliability automotive power conversion, emphasizing thermal robustness, manufacturability, and transient survivability in harsh environments.

FAQ

What is the peak repetitive reverse voltage rating for TUAS6JH?

The TUAS6JH has a peak repetitive reverse voltage (V_RRM) rating of 600 V, verified per datasheet Table 1. This value defines the maximum reverse-biased voltage the device can block continuously without breakdown and is critical for selecting appropriate derating margins in automotive 24V or 48V system designs. TUAS6JH maintains this rating across its full operating temperature range.

Is TUAS6JH qualified for automotive applications?

Yes, TUAS6JH is explicitly AEC-Q101 qualified per the manufacturer's documentation, covering stress tests including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress testing (UHAST). This qualification makes TUAS6JH suitable for under-hood and cabin applications where reliability under thermal, mechanical, and environmental stress is mandatory. TUAS6JH meets these requirements as a standard rectifier-not just a generic part.

What is the forward voltage of TUAS6JH at 6A and 25°C?

The forward voltage (V_F) of TUAS6JH is specified as 0.98 V maximum at 6A forward current and 25°C junction temperature, per the Electrical Specifications table. This value reflects worst-case conduction loss under nominal conditions and directly influences thermal design and system efficiency. TUAS6JH achieves lower V_F than ultrafast alternatives like MUR660S, making it preferred for continuous-conduction-mode rectification.

Does TUAS6JH have wettable flanks, and why does it matter?

Yes, TUAS6JH features wettable flank terminals as confirmed in the Mechanical Data section. This geometry allows solder to wick up the vertical side of the lead during reflow, enabling automated optical inspection (AOI) systems to verify solder fillet quality and detect voids or insufficient wetting-critical for zero-defect manufacturing in automotive electronics. TUAS6JH's wettable flank design complies with IPC-7351B standards for TO-277A.

What is the junction-to-lead thermal resistance (R_θJL) of TUAS6JH?

The junction-to-lead thermal resistance (R_θJL) of TUAS6JH is 5°C/W, measured on a standardized 16mm × 16mm Cu pad test board. This parameter quantifies how effectively heat transfers from the silicon die to the lead frame, enabling direct thermal coupling to PCB copper planes. TUAS6JH's low R_θJL supports higher power density compared to alternatives like VS-6EWH06-M3 (6.5°C/W), reducing thermal bottleneck risk in space-constrained layouts.