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Taiwan Semiconductor Corporation TUAU4DH
- Part No.:
- TUAU4DH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAU4DH.pdf
- Description:
- 50NS, 4A, 200V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:5,887
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Product details
Overview
TUAU4DH from Taiwan Semiconductor is a 4A, 200V high-efficiency surface-mount rectifier in TO-277A (SMPC4.6U) package, featuring glass-passivated junction, AEC-Q101 qualification, 50ns reverse recovery time, and wettable flanks for automated optical inspection. It serves as a freewheeling or snubber diode in automotive lighting and DC-DC converters operating up to 175°C junction temperature.
For engineers reviewing the TUAU4DH datasheet, TUAU4DH pinout, TUAU4DH application, or TUAU4DH equivalent, key selection criteria include its 200V VRRM, 0.88V forward voltage at 4A/25°C, 100A surge rating, AEC-Q101 compliance, and TO-277A thermal performance (RθJL = 5.1°C/W).
Technical Context
The TUAU4DH is a single-die, fast-recovery silicon rectifier optimized for high-frequency switching applications. Its 50ns reverse recovery time and low junction capacitance (62pF at 1MHz, 4V) minimize switching losses in DC-DC converters and snubber networks.
Designed for automotive-grade reliability, it features glass passivation, JESD201 Class 2 whisker resistance, moisture sensitivity level 1, and operates across –55°C to +175°C junction range with 5.1°C/W junction-to-lead thermal resistance on standard PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; defines safe blocking capability in 24V/48V automotive systems. |
| IF | 4 A - Continuous average forward current; supports sustained conduction in power supply output stages. |
| IFSM | 100 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and transient overloads without failure. |
| trr | 50 ns - Reverse recovery time; enables efficient operation at >100 kHz switching frequencies with low switching loss. |
| VF | 0.88 V @ 4A, 25°C - Low forward voltage drop; reduces conduction loss and thermal stress in high-current paths. |
| RθJL | 5.1 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper for effective heat dissipation. |
| CJ | 62 pF @ 1 MHz, 4 V - Low junction capacitance; minimizes capacitive coupling and EMI in high-speed switching nodes. |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, single-anode/single-cathode configuration with cathode band polarity marking and matte tin-plated wettable flanks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of circuit; accepts current during conduction phase. |
| Cathode | Forward current exit / reverse voltage reference | Marked by band; connects to higher-potential node; blocks reverse voltage up to 200V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per AEC standard. |
| Glass passivated junction | Provides robust protection against environmental contamination and leakage current drift over lifetime. |
| Wettable flank terminals | Enables automated optical inspection (AOI) of solder joints on bottom-side terminations for SMT process control. |
| Fast recovery (50 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in high-frequency topologies. |
| Moisture sensitivity level 1 | Eliminates need for dry-pack handling or baking prior to reflow, simplifying manufacturing logistics. |
Applications
| Automotive LED Lighting | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: High-brightness LED headlamp modules requiring stable current regulation and EMI control in 12V/48V vehicle architectures. IC Role / Device Role / Timing Role: Freewheeling diode in buck/boost LED drivers, clamping inductive kickback and enabling continuous current flow. Use Value: 50ns trr and 0.88V VF reduce switching loss and thermal rise, supporting compact heatsink-free designs. | Use Scenario: Secondary-side rectification in isolated 12V–48V automotive DC-DC converters for ADAS and infotainment systems. IC Role / Device Role / Timing Role: Synchronous or quasi-synchronous rectifier replacing MOSFETs where simplicity and cost outweigh marginal efficiency gains. Use Value: TO-277A package with RθJL = 5.1°C/W allows direct PCB thermal path, maintaining <150°C junction under full load. |
| Snubber Network Protection | Industrial Motor Control Freewheeling |
Use Scenario: RC snubber circuits across IGBTs/MOSFETs in motor drives and power inverters to suppress voltage spikes. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive energy during switch turn-off. Use Value: 100A IFSM and 200V VRRM handle repetitive transients without degradation in harsh industrial environments. | Use Scenario: Freewheeling path for brushed DC motors and solenoid actuators in factory automation controllers. IC Role / Device Role / Timing Role: Unidirectional current path during inductive energy decay after PWM switch-off. Use Value: AEC-Q101 qualification and –55°C to +175°C TJ range ensure reliability across wide ambient and self-heating conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06S | 600V VRRM, 4A IF, 65ns trr, TO-277 package, no AEC-Q101 qualification | Higher voltage rating but slower recovery and non-automotive qualified | Select when 600V blocking is required and AEC-Q101 is not mandated. |
| SB420 | 200V VRRM, 4A IF, 35ns trr, DO-214AA package, no wettable flanks or AEC-Q101 | Faster recovery but lacks automotive qualification and AOI-compatible terminations | Prefer for cost-sensitive consumer applications where AOI and automotive reliability are not required. |
Compared with STTH4L06S and SB420, the TUAU4DH uniquely combines AEC-Q101 qualification, wettable flanks, and 50ns recovery in a 200V-rated TO-277A package-making it optimal for space-constrained, high-reliability automotive power stages where manufacturability and thermal performance are critical.
Availability
TUAU4DH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter output rectification, and snubber network protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TUAU4DH 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and automotive qualification capabilities.
The TUAU4DH belongs to TSC's AEC-Q101-qualified surface-mount rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments where thermal robustness and automated assembly compatibility are essential.
FAQ
What is the maximum junction temperature rating for the TUAU4DH?
The TUAU4DH has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table. This allows operation in under-hood automotive environments and high-power-density industrial applications where thermal margins are constrained. The device maintains specified electrical performance up to this limit when thermal design adheres to RθJL = 5.1°C/W on a 16mm × 16mm Cu pad PCB.
Is the TUAU4DH pin-compatible with other parts in the TUAU4xH family?
Yes, all TUAU4xH variants-including TUAU4DH, TUAU4GH, TUAU4JH, TUAU4KH, and TUAU4MH-share identical TO-277A (SMPC4.6U) packaging and pinout. Only the VRRM rating differs (200V to 1000V), allowing voltage-scaling design reuse without layout changes. Marking codes (e.g., AU4D) distinguish variants visually on the device body.
Does the TUAU4DH meet RoHS and halogen-free requirements?
Yes, the TUAU4DH is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002 solderability standards. These certifications are confirmed in the official TSC datasheet revision A2111 and apply specifically to the TUAU4DH ordering code.
What is the reverse recovery time (trr) of the TUAU4DH, and how is it measured?
The TUAU4DH has a maximum reverse recovery time (trr) of 50 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the electrical specifications table. This value reflects performance at 25°C ambient and is critical for minimizing switching loss in high-frequency DC-DC converters and snubber circuits.
Can the TUAU4DH be used in lead-free reflow processes?
Yes, the TUAU4DH supports lead-free reflow soldering per J-STD-020 moisture sensitivity level 1, meaning it can be stored indefinitely at ≤30°C/60% RH and requires no pre-bake before assembly. Its matte tin-plated terminals are fully compatible with standard Pb-free reflow profiles up to 260°C peak temperature.
TUAU4DH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-277, 3-PowerDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 62pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 175°C
TUAU4DH FAQ
1.How can I place an order for TUAU4DH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAU4DH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TUAU4DH reliable?
The price and inventory of TUAU4DH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAU4DH is usually 5 days.
3.What payment methods are accepted for TUAU4DH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAU4DH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAU4DH?
TUAU4DH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAU4DH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TUAU4DH?
For technical support, including TUAU4DH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAU4DH requirements.
6.How does Aetrix verify that TUAU4DH is sourced from the original manufacturer or authorized distributors?
All TUAU4DH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TUAU4DH meets industry standards.
7.What is the process for return or replacement of TUAU4DH?
All TUAU4DH units undergo pre-shipment inspection (PSI). If there is an issue with TUAU4DH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TUAU4DH part is unused and in its original packaging.
Return procedure for TUAU4DH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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