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Taiwan Semiconductor Corporation TUAU8DH
- Part No.:
- TUAU8DH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAU8DH.pdf
- Description:
- 50NS, 8A, 200V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
TUAU8DH from Taiwan Semiconductor is a surface-mount, single-die, AEC-Q101-qualified ultrafast rectifier with 200 V repetitive peak reverse voltage (VRRM), 8 A average forward current (IF), and 50 ns reverse recovery time (trr). It features glass passivated junction, wettable flanks, and TO-277A (SMPC4.6U) package - optimized for automotive DC-DC converters and freewheeling applications requiring high surge capability and thermal robustness up to 175 °C junction temperature.
For engineers reviewing the TUAU8DH datasheet, TUAU8DH pinout, TUAU8DH application, or TUAU8DH equivalent, key selection criteria include its 0.93 V forward voltage at 8 A/25 °C, 140 A non-repetitive surge rating, J-STD-020 Level 1 moisture sensitivity, and compatibility with lead-free reflow profiles - all critical for under-hood automotive power designs.
Technical Context
The TUAU8DH operates as a unidirectional, single-anode–single-cathode silicon rectifier with ultrafast recovery characteristics enabled by optimized doping and junction passivation. Its 50 ns trr and low 80 pF junction capacitance support high-frequency switching in snubber and freewheeling topologies.
Thermally, it delivers RθJL = 5.5 °C/W and RθJA = 48 °C/W on a 16 mm × 16 mm Cu pad PCB, enabling sustained 8 A conduction without forced cooling in compact automotive modules. Junction temperature range spans −55 °C to +175 °C, validated per AEC-Q101 stress test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum reverse blocking voltage before breakdown; defines usable input voltage range in DC-DC stages. |
| IF | 8 A - Continuous average forward current at case temperature ≤ 110 °C; supports high-power LED drivers and motor control rails. |
| trr | 50 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables >100 kHz switching with minimal switching loss. |
| VF | 0.93 V @ 8 A, 25 °C - Low conduction loss reduces heat generation in space-constrained automotive modules. |
| IFSM | 140 A @ 8.3 ms - Withstands inrush and fault currents in automotive power supplies without bond-wire fusing. |
| Junction Temp | −55 °C to +175 °C - Full operational range qualified per AEC-Q101; supports engine bay placement. |
| CJ | 80 pF @ 1 MHz, 4 V - Limits capacitive coupling noise in high-dv/dt environments like ignition circuits. |
Pinout & Package
Package: TO-277A (SMPC4.6U) - surface-mount, 3-terminal, thermally enhanced plastic case with wettable flank leads for automated optical solder-joint inspection. Cathode polarity indicated by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to source-side of switching node; designed for low-inductance PCB routing in high-di/dt paths. |
| Cathode (Lead 2) | Output current exit point | Electrically and thermally tied to internal die cathode; primary heat path to PCB copper pad. |
| Tab / Case (Lead 3) | Thermal & electrical cathode extension | Exposed metal tab is electrically connected to cathode and serves as main thermal interface to heatsink or ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use across temperature, humidity, vibration, and lifetime stress tests - eliminates need for additional reliability screening. |
| Glass passivated junction | Prevents moisture ingress and surface leakage at high humidity; maintains stable VR and IR over 15+ year field life. |
| Wettable flank leads | Enables automated AOI detection of solder fillet integrity - critical for zero-defect automotive manufacturing. |
| Low RθJL = 5.5 °C/W | Allows direct thermal coupling to PCB; supports 8 A operation without external heatsink in ambient ≤ 85 °C. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - meets Tier-1 automotive material declaration requirements. |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: High-efficiency 12 V to 48 V bidirectional converter in 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck-boost topology, handling 8 A continuous reverse-recovery current. Use Value: 50 ns trr minimizes switching loss and EMI during phase transitions; 175 °C rating ensures reliability near engine control units. | Use Scenario: Constant-current driver for adaptive front-lighting system (AFS) matrix LEDs. IC Role / Device Role / Timing Role: Snubber diode clamping inductive kickback from PWM-controlled LED strings. Use Value: 140 A IFSM withstands transient surges during short-circuit events; wettable flanks ensure solder joint reliability under thermal cycling. |
| On-Board Charger (OBC) Auxiliary Supplies | Engine Control Unit (ECU) Power Rails |
Use Scenario: Isolated auxiliary supply powering gate drivers and sensors in EV on-board chargers. IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter delivering 5–15 W at 12–24 V. Use Value: 0.93 V VF at 8 A improves light-load efficiency; TO-277A footprint allows dense layout in constrained OBC PCB areas. | Use Scenario: Input protection and freewheeling in 5 V/3.3 V LDO pre-regulator stages within engine ECUs. IC Role / Device Role / Timing Role: Reverse-polarity protection and inductive load flyback path for solenoid drivers. Use Value: Glass passivation prevents leakage-induced reset faults at 125 °C ambient; AEC-Q101 status satisfies OEM functional safety documentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-8EWH02FN-M3/45 | 200 V VRRM, 8 A IF, 35 ns trr, TO-277A package, but no AEC-Q101 qualification. | Suitable for industrial DC-DC where automotive qualification is not required. | Select when faster recovery is prioritized over automotive compliance and long-term humidity reliability. |
| ON Semiconductor MUR820G | 200 V VRRM, 8 A IF, 75 ns trr, TO-220AC package - larger footprint, higher RθJA (65 °C/W). | Better suited for through-hole prototyping or legacy board upgrades with existing TO-220 footprints. | Choose only if TO-220 mechanical fit is mandatory and 25 ns slower recovery is acceptable in target frequency range. |
Compared with VS-8EWH02FN-M3/45 and MUR820G, the TUAU8DH uniquely combines AEC-Q101 qualification, 50 ns recovery, wettable flanks, and TO-277A thermal performance - making it the only option qualified for production automotive power stages requiring both reliability and high-frequency efficiency.
Availability
TUAU8DH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and engine control unit power rails requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TUAU8DH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The TUAU8DH belongs to TSC's AEC-Q101-qualified ultrafast rectifier product line, engineered specifically for high-reliability automotive power conversion where thermal resilience, solder-joint inspectability, and consistent switching performance are mandatory.
FAQ
What is the maximum junction temperature rating for the TUAU8DH?
The TUAU8DH has a maximum junction temperature (TJ) rating of +175 °C, verified per AEC-Q101 stress testing protocols. This rating applies across its full operating voltage range and enables deployment in high-ambient environments such as engine compartments. The TUAU8DH datasheet specifies derating curves confirming 8 A continuous current capability up to 110 °C case temperature - critical for thermal design validation in automotive modules.
Is the TUAU8DH pin-compatible with other parts in the TUAU8xH family?
Yes, all TUAU8xH variants - including TUAU8DH, TUAU8GH, TUAU8JH, TUAU8KH, and TUAU8MH - share identical TO-277A (SMPC4.6U) package dimensions, pinout, and thermal pad layout. The only differences are VRRM ratings (200 V to 1000 V) and corresponding forward voltage/reverse recovery trade-offs. This allows drop-in voltage-scaling during design iteration without PCB changes.
Does the TUAU8DH require special PCB layout considerations?
Yes - the TUAU8DH's exposed cathode tab must be connected to a minimum 16 mm × 16 mm copper pad for optimal thermal performance (RθJA = 48 °C/W). Trace width for anode and cathode leads should be ≥ 1.5 mm to handle 8 A continuous current. The wettable flank design mandates solder mask defined pads aligned to IPC-7351B standards to enable reliable AOI inspection of side-wall fillets.
What is the reverse recovery time (trr) specification for the TUAU8DH?
The TUAU8DH has a maximum reverse recovery time (trr) of 50 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A. This value is confirmed across temperature (25 °C to 125 °C) and supports efficient operation in switching power supplies operating up to 300 kHz. The trr directly contributes to reduced switching losses compared to standard recovery rectifiers.
How does the TUAU8DH meet automotive reliability requirements?
The TUAU8DH meets automotive reliability requirements via AEC-Q101 qualification, glass passivated chip junction, J-STD-020 Level 1 moisture sensitivity, and JESD201 Class 2 whisker resistance. Its construction - including matte tin-plated leads and UL 94V-0 molding compound - ensures long-term stability under thermal cycling, humidity, and mechanical vibration typical of automotive under-hood applications. These attributes are fully documented in the TUAU8DH datasheet revision A2111.
TUAU8DH 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):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 175°C
TUAU8DH FAQ
1.How can I place an order for TUAU8DH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAU8DH 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 TUAU8DH reliable?
The price and inventory of TUAU8DH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAU8DH is usually 5 days.
3.What payment methods are accepted for TUAU8DH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAU8DH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAU8DH?
TUAU8DH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAU8DH 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 TUAU8DH?
For technical support, including TUAU8DH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAU8DH requirements.
6.How does Aetrix verify that TUAU8DH is sourced from the original manufacturer or authorized distributors?
All TUAU8DH 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 TUAU8DH meets industry standards.
7.What is the process for return or replacement of TUAU8DH?
All TUAU8DH units undergo pre-shipment inspection (PSI). If there is an issue with TUAU8DH, 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 TUAU8DH part is unused and in its original packaging.
Return procedure for TUAU8DH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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