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Taiwan Semiconductor Corporation TUAS6KH
- Part No.:
- TUAS6KH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAS6KH.pdf
- Description:
- 6A, 800V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
TUAS6KH from Taiwan Semiconductor is a 6A, 800V glass-passivated standard surface-mount rectifier in TO-277A (SMPC4.6U) package, featuring AEC-Q101 qualification, wettable flanks, and 140A surge capability; used in automotive DC-DC converters and snubber circuits.
For engineers reviewing the TUAS6KH datasheet, TUAS6KH pinout, TUAS6KH application, or TUAS6KH equivalent, key selection criteria include peak reverse voltage (800 V), forward voltage at 6 A (max 1.10 V @ 25°C), junction-to-lead thermal resistance (5 °C/W), AEC-Q101 compliance, and TO-277A mechanical compatibility.
Technical Context
This single-die standard rectifier operates with a maximum junction temperature of 150°C and supports repetitive peak reverse voltages up to 800 V. Its glass-passivated junction ensures reliability under high-humidity and automotive thermal cycling conditions.
The device delivers 6 A average forward current with low forward voltage drop (0.98 V typ. @ 6 A, 25°C) and exhibits 39 pF junction capacitance at 1 MHz and 4 V reverse bias - optimized for high-frequency snubbing and switching power supply applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum repetitive reverse blocking voltage; defines safe operating range in DC-DC flyback and snubber networks |
| IF | 6 A - continuous average forward current rating at case temperature ≤ 115°C on 16 mm × 16 mm Cu pad |
| IFSM | 140 A - non-repetitive surge current (8.3 ms half-sine); withstands inrush and transient overloads in automotive lighting |
| VF @ 6 A, 25°C | 0.98 V (typ), 1.10 V (max) - low conduction loss enabling efficient thermal management in space-constrained modules |
| CJ | 39 pF @ 1 MHz, 4 V - reduced capacitive coupling improves EMI performance in high-dV/dt switching nodes |
| RθJL | 5 °C/W - enables direct thermal path to PCB copper; critical for sustained 6 A operation without heatsink |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST |
Pinout & Package
TO-277A (SMPC4.6U) surface-mount package with cathode-indicating band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of bridge or input rail; requires adequate copper pour for thermal dissipation |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; ties to output node or clamp circuit; wettable flank enables automated optical inspection (AOI) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics including engine control units and LED headlight drivers |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion during reflow and long-term operation in humid environments |
| Wettable flank leads | Enables reliable solder joint inspection via AOI and X-ray; supports IPC-A-610 Class 3 assembly requirements |
| 140 A IFSM surge rating | Handles load-dump transients and cold-crank surges in 12 V/24 V vehicle electrical systems |
| TO-277A mechanical footprint | Compatible with standard SMT pick-and-place equipment and reflow profiles per J-STD-020 Level 1 |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: High-efficiency buck-boost converter supplying 5–12 V rails from 12 V/48 V battery in ADAS domain controllers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant topology; handles 6 A continuous conduction mode current. Use Value: 800 V VRRM accommodates 48 V system transients; 0.98 V VF minimizes conduction loss and thermal stress at full load. | Use Scenario: Constant-current driver for matrix LED headlamps with PWM dimming and short-circuit protection. IC Role / Device Role / Timing Role: Freewheeling diode in inductive switch-mode regulator; clamps inductive kick during MOSFET turn-off. Use Value: 140 A IFSM withstands lamp hot-swap events; wettable flank ensures AOI-verified solder joints in safety-critical lighting modules. |
| Snubber Networks | Industrial Power Supplies |
Use Scenario: RCVD snubber across MOSFETs/IGBTs in motor drives and inverters operating at 20–100 kHz. IC Role / Device Role / Timing Role: Fast-recovery rectifier absorbing switching energy during turn-off transitions. Use Value: 39 pF CJ reduces capacitive loading on gate drivers; 800 V rating covers 600 V bus with margin for ringing. | Use Scenario: Secondary-side rectification in telecom and industrial AC-DC supplies requiring long service life and high MTBF. IC Role / Device Role / Timing Role: Main output rectifier delivering 6 A at 12–48 V; mounted directly on large copper pads for passive cooling. Use Value: RθJL = 5 °C/W allows >90% derating at 115°C case temp; RoHS/halogen-free compliance meets IEC 61249-2-21. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH6R08 | 6 A, 800 V, TO-277A, VF = 1.15 V (max) @ 6 A, 25°C; no AEC-Q101 qualification | Targeted at industrial/commercial power supplies; not validated for automotive thermal cycling or humidity exposure | Select when AEC-Q101 is not required and higher VF is acceptable for cost-sensitive designs |
| VS-6EWH08FN-M3 | 6 A, 800 V, TO-277A, VF = 0.95 V (typ) @ 6 A, 25°C; AEC-Q101 qualified; 35 pF CJ | Optimized for ultra-low-loss snubbers and high-frequency PFC stages; tighter VF tolerance | Prefer for noise-sensitive applications where 4 pF lower CJ and 0.03 V lower typical VF improve efficiency |
Compared with STTH6R08 and VS-6EWH08FN-M3, the TUAS6KH offers balanced performance: AEC-Q101 compliance like the latter but at lower cost, and lower VF than the former while maintaining identical 800 V/6 A rating and TO-277A footprint.
Availability
TUAS6KH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and industrial snubber networks requiring stable component supply, AEC-Q101 traceability, and TO-277A SMT compatibility.
Supply support for TUAS6KH 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 TUAS6KH belongs to TSC's AEC-Q101-qualified surface-mount rectifier product line, engineered for high-reliability power conversion in harsh-environment automotive and industrial applications.
FAQ
What is the peak repetitive reverse voltage rating for TUAS6KH?
The TUAS6KH has a peak repetitive reverse voltage (VRRM) rating of 800 V, verified per datasheet Table 1. This value defines the maximum reverse-bias voltage the device can block continuously without breakdown, making it suitable for 48 V automotive systems with transient overvoltage margins. The TUAS6KH maintains this rating across its full operating junction temperature range of –55°C to +150°C.
Is TUAS6KH qualified for automotive applications?
Yes, TUAS6KH is AEC-Q101 qualified per the official Taiwan Semiconductor datasheet Version A2111. Qualification includes stress tests for temperature cycling, high-temperature reverse bias (HTRB), unbiased highly accelerated stress test (UHAST), and mechanical robustness - confirming suitability for under-hood and interior automotive power modules. The TUAS6KH marking code "AS6K" explicitly identifies this qualified variant.
What is the forward voltage drop of TUAS6KH at 6 A and 25°C?
The TUAS6KH exhibits a typical forward voltage (VF) of 0.98 V and a maximum of 1.10 V at 6 A and 25°C, as specified in the Electrical Specifications table. This measurement uses a 0.3 ms pulse width per Note 1. At elevated junction temperatures (125°C), VF drops to 0.88 V (typ), improving conduction efficiency in thermally demanding applications such as LED drivers and DC-DC converters.
What package type does TUAS6KH use, and what are its key mechanical features?
TUAS6KH uses the TO-277A (SMPC4.6U) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. It features wettable flanks for AOI-compatible solder joints, a cathode band for polarity identification, and weighs approximately 0.107 g. The molding compound meets UL 94V-0 flammability standards.
Does TUAS6KH have a specified junction capacitance, and how is it measured?
Yes, TUAS6KH has a typical junction capacitance (CJ) of 39 pF, measured at 1 MHz and 4.0 V reverse bias, as confirmed in the Electrical Specifications table. This value applies specifically to the TUAS6KH and TUAS6MH variants (per footnote in the CJ table). The low capacitance supports high-frequency snubber and clamp applications by minimizing displacement current and EMI generation during fast switching transitions.
TUAS6KH 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:
- 1.1 V @ 6 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 39pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 150°C
TUAS6KH FAQ
1.How can I place an order for TUAS6KH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAS6KH 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 TUAS6KH reliable?
The price and inventory of TUAS6KH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAS6KH is usually 5 days.
3.What payment methods are accepted for TUAS6KH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAS6KH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAS6KH?
TUAS6KH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAS6KH 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 TUAS6KH?
For technical support, including TUAS6KH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAS6KH requirements.
6.How does Aetrix verify that TUAS6KH is sourced from the original manufacturer or authorized distributors?
All TUAS6KH 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 TUAS6KH meets industry standards.
7.What is the process for return or replacement of TUAS6KH?
All TUAS6KH units undergo pre-shipment inspection (PSI). If there is an issue with TUAS6KH, 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 TUAS6KH part is unused and in its original packaging.
Return procedure for TUAS6KH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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