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Taiwan Semiconductor Corporation TUAU6KH
- Part No.:
- TUAU6KH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAU6KH.pdf
- Description:
- 75NS, 6A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:5,989
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Product details
Overview
TUAU6KH from Taiwan Semiconductor is a high-efficiency, AEC-Q101-qualified surface-mount rectifier with 800 V repetitive peak reverse voltage (VRRM), 6 A average forward current (IF), and 140 A surge peak forward current (IFSM). It features low forward voltage drop (1.48 V at 6 A, 25°C), fast reverse recovery time (75 ns), and TO-277A (SMPC4.6U) wettable flank package for automotive-grade power conversion.
For engineers reviewing the TUAU6KH datasheet, TUAU6KH pinout, TUAU6KH application, or TUAU6KH equivalent, key selection criteria include its 800 V VRRM rating, 1.48 V VF at rated current, 75 ns trr, thermal resistance (RθJL = 6 °C/W), and AEC-Q101 qualification for under-hood automotive use.
Technical Context
The TUAU6KH is a single-die, glass-passivated silicon junction rectifier optimized for high-frequency switching in DC/DC converters and SMPS. Its 800 V VRRM and 1.48 V VF at 6 A/25°C reflect trade-offs between blocking capability and conduction loss, while the 75 ns reverse recovery time supports operation up to several hundred kHz.
Thermal performance is defined by RθJL = 6 °C/W and RθJA = 50 °C/W on a 16 mm × 16 mm Cu pad PCB. Junction temperature range is −55°C to +150°C, with moisture sensitivity level 1 per J-STD-020 - enabling lead-free reflow without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF | 6 A - continuous average forward current at case temperature ≤ 115°C |
| IFSM | 140 A - non-repetitive surge current capability (8.3 ms half-sine) |
| VF @ 6 A, 25°C | 1.48 V - forward voltage drop defining conduction loss at full rated load |
| trr | 75 ns - reverse recovery time determining switching loss and EMI in hard-switched topologies |
| RθJL | 6 °C/W - junction-to-lead thermal resistance enabling direct thermal path to PCB copper |
| CJ @ 4 V | 43 pF - junction capacitance affecting high-frequency noise coupling and snubber design |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, single-anode/single-cathode configuration with cathode band marking and wettable flanks for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to lower-potential side of rectified AC or freewheeling loop |
| Cathode | Output terminal for forward conduction path | Connected to higher-potential output rail; marked by visible cathode band |
| Lead (exposed tab) | Thermal and electrical connection to cathode | Provides primary heat dissipation path to PCB copper; electrically tied to cathode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control and ADAS power supplies |
| Glass passivated junction | Enhances long-term reliability and humidity resistance in harsh environments |
| Wettable flank leads | Enables automated solder joint inspection (AOI) without X-ray for IPC Class 3 assembly |
| Moisture sensitivity level 1 | Zero floor life limitation - no baking required before reflow soldering |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| On-Board Charger (OBC) Input Rectification | Automotive DC/DC Converter Freewheeling Diode |
|---|---|
Use Scenario: Rectifying 3-phase AC input (after PFC stage) in 3.3–22 kW EV on-board chargers. IC Role / Device Role / Timing Role: High-voltage, high-current output rectifier handling 800 V bus-level DC after AC/DC conversion. Use Value: 800 V VRRM and 140 A IFSM withstand transient overvoltage and inrush during plug-in events. | Use Scenario: Freewheeling path in synchronous buck converters powering ADAS ECUs or infotainment systems. IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode complementing high-side MOSFET in non-synchronous mode. Use Value: 75 ns trr minimizes reverse recovery loss and improves efficiency above 100 kHz switching frequency. |
| Industrial SMPS Output Stage | Solar Microinverter DC Link Clamp |
Use Scenario: Secondary-side rectification in 500–1000 W industrial switch-mode power supplies. IC Role / Device Role / Timing Role: Primary output rectifier delivering regulated 12–48 V DC with minimal conduction loss. Use Value: 1.48 V VF at 6 A reduces power dissipation vs. standard FRDs, lowering heatsink requirements. | Use Scenario: Clamping diode across DC link capacitors in solar microinverters exposed to lightning-induced transients. IC Role / Device Role / Timing Role: Transient voltage clamp protecting IGBTs/MOSFETs during grid fault conditions. Use Value: 800 V VRRM and 150°C max junction temperature support operation in outdoor-rated inverters with wide ambient swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-6EWH08FN-M3 | Same TO-277A package; 800 V VRRM; VF = 1.55 V @ 6 A, 25°C; trr = 60 ns | Slightly faster recovery but higher VF increases conduction loss at high duty cycles | Prefer when switching frequency > 300 kHz dominates loss budget |
| ON Semiconductor MUR680CT | TO-220AC package; dual common-cathode; 800 V VRRM; VF = 1.75 V @ 6 A, 25°C; trr = 60 ns | Through-hole mounting; higher VF and larger footprint; no AEC-Q101 qualification | Acceptable for cost-sensitive industrial SMPS where automotive qualification is not required |
Compared with VS-6EWH08FN-M3 and MUR680CT, the TUAU6KH offers superior thermal resistance (RθJL = 6 °C/W), AEC-Q101 compliance, and lower VF - making it optimal for space-constrained, thermally demanding automotive power stages where reliability and conduction efficiency are prioritized.
Availability
TUAU6KH is available at Aetrix Electronics and suitable for automotive on-board chargers, industrial SMPS, solar microinverters, and ADAS DC/DC converters requiring stable component supply, AEC-Q101 qualification, and high-reliability surface-mount rectification.
Supply support for TUAU6KH 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.
The TUAU6xH series was developed specifically for high-efficiency, high-reliability automotive and industrial power conversion - emphasizing AEC-Q101 qualification, wettable flank packaging, and optimized VF/trr balance for 200–1000 V applications.
FAQ
What is the maximum junction temperature rating for TUAU6KH?
The TUAU6KH has a maximum junction temperature (TJ) rating of +150°C, with an operating range from −55°C to +150°C. This rating applies across all voltage variants in the TUAU6xH family and is validated per AEC-Q101 stress testing. The 150°C limit reflects thermal derating for sustained 6 A operation in automotive under-hood environments where ambient temperatures exceed 105°C. Always reference the forward current derating curve in the TUAU6KH datasheet for safe operating area boundaries.
Is TUAU6KH pin-compatible with other parts in the TUAU6xH series?
Yes, all TUAU6xH variants - including TUAU6DH, TUAU6GH, TUAU6JH, TUAU6KH, and TUAU6MH - share identical TO-277A (SMPC4.6U) mechanical dimensions, pinout, and thermal pad layout. The only differences are VRRM rating (200–1000 V), forward voltage, and reverse recovery time. This enables drop-in replacement during design iteration or voltage binning without PCB changes, provided thermal and electrical margins remain within specification for the selected variant.
Does TUAU6KH require moisture preconditioning before reflow soldering?
No, the TUAU6KH is rated at Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it has unlimited floor life and does not require baking or dry-pack storage prior to reflow. This simplifies manufacturing logistics and eliminates risk of popcorning during lead-free reflow profiles. The MSL 1 rating is confirmed in the official Taiwan Semiconductor datasheet Version C2111 and verified through JEDEC-compliant testing.
What is the reverse recovery time (trr) specification for TUAU6KH?
The TUAU6KH has a maximum reverse recovery time (trr) of 75 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This value is specified in the Electrical Specifications table of the TUAU6KH datasheet and is consistent across the 800 V and 1000 V variants (TUAU6KH/TUAU6MH). The 75 ns trr enables efficient operation in high-frequency SMPS designs up to ~500 kHz, reducing switching losses compared to standard recovery rectifiers.
How is polarity indicated on the TUAU6KH package?
Polarity on the TUAU6KH is indicated by a visible cathode band printed on the molded body - located adjacent to the cathode terminal. Per the Mechanical Data section of the TUAU6KH datasheet, this band aligns with the cathode lead and the exposed thermal pad (which is electrically connected to the cathode). Correct orientation is critical: reversing the device will result in catastrophic failure under reverse bias. The marking diagram in datasheet page 5 confirms band position relative to the date code and factory code.
TUAU6KH 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):
- 800 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 6 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 64pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 175°C
TUAU6KH FAQ
1.How can I place an order for TUAU6KH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAU6KH 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 TUAU6KH reliable?
The price and inventory of TUAU6KH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAU6KH is usually 5 days.
3.What payment methods are accepted for TUAU6KH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAU6KH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAU6KH?
TUAU6KH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAU6KH 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 TUAU6KH?
For technical support, including TUAU6KH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAU6KH requirements.
6.How does Aetrix verify that TUAU6KH is sourced from the original manufacturer or authorized distributors?
All TUAU6KH 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 TUAU6KH meets industry standards.
7.What is the process for return or replacement of TUAU6KH?
All TUAU6KH units undergo pre-shipment inspection (PSI). If there is an issue with TUAU6KH, 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 TUAU6KH part is unused and in its original packaging.
Return procedure for TUAU6KH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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