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Taiwan Semiconductor Corporation TUAU4MH
- Part No.:
- TUAU4MH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAU4MH.pdf
- Description:
- 75NS, 4A, 1000V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:5,994
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Product details
Overview
TUAU4MH from Taiwan Semiconductor is a 4A, 1000V repetitive peak reverse voltage (VRRM) surface-mount ultrafast rectifier in TO-277A (SMPC4.6U) package, featuring 75 ns reverse recovery time (trr), 1.36 V forward voltage at 4A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in high-efficiency DC-DC converters and car lighting systems.
For engineers reviewing the TUAU4MH datasheet, TUAU4MH pinout, TUAU4MH application, or TUAU4MH equivalent, key selection criteria include its 1000V VRRM, wettable flank terminals for automated optical inspection, 170A surge rating (t=1.0ms), junction temperature range up to +175°C, and JESD201 Class 2 whisker resistance - all critical for under-hood automotive power designs.
Technical Context
The TUAU4MH employs a glass-passivated silicon die with single-die configuration optimized for fast switching in high-voltage, medium-current applications. Its 75 ns reverse recovery time and low 33 pF junction capacitance at 1 MHz/4V enable reduced switching losses in high-frequency converters.
Thermally, it delivers RθJL = 5.1°C/W and RθJA = 45°C/W on a 16 mm × 16 mm Cu pad PCB, supporting continuous 4A operation up to +150°C ambient when derated per curve data. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports input stages in 400–800V DC bus systems without derating |
| IF | 4 A continuous - rated for sustained conduction in automotive LED drivers and DC-DC secondaries |
| trr | 75 ns max - enables operation up to ~2 MHz switching frequency with low recovery loss |
| VF @ 4A, 25°C | 1.36 V typ - balances conduction loss and thermal rise in compact SMT layouts |
| IR @ 1000V, 125°C | 18 µA max - ensures low leakage in high-temp snubber networks |
| CJ @ 1MHz, 4V | 33 pF - minimizes capacitive coupling noise in high-dv/dt gate drive circuits |
| RθJL | 5.1 °C/W - allows direct thermal path to PCB copper, simplifying heatsinking |
Pinout & Package
Package: TO-277A (SMPC4.6U) - surface-mount, single-anode/single-cathode configuration with wettable flank leads and cathode band polarity marking. Dimensions comply with JEDEC MS-012AC variant; weight ≈ 0.106 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node (e.g., switch node in buck converter freewheel path) |
| Cathode | Current exit terminal during forward conduction | Marked by band; ties to higher-potential rail (e.g., output capacitor positive) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enables stable leakage performance and long-term reliability in humid environments |
| Wettable flank leads | Supports automated AOI of solder fillet on bottom-side terminations for high-yield SMT assembly |
| Junction temp max = +175°C | Permits operation in engine compartment locations where ambient exceeds +125°C |
| IFSM = 170A (t=1.0ms) | Withstands high-energy transients in load dump or inductive kick scenarios |
Applications
| Automotive LED Headlamp Drivers | 48V–400V DC-DC Boost Converters |
|---|---|
Use Scenario: High-brightness LED arrays powered from vehicle battery with PWM dimming and overvoltage protection. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous boost topology, conducting during low-side switch off-time. Use Value: 1000V VRRM accommodates load dump spikes; 75 ns trr reduces switching loss at 500 kHz operation. |
Use Scenario: Step-up conversion from 48V telecom or mild-hybrid battery to 400V traction auxiliary supply. IC Role / Device Role / Timing Role: Output rectifier in non-synchronous boost stage, handling 4A average output current. Use Value: 1.36 V VF limits conduction loss; TO-277A package enables high-density layout with minimal thermal via count. |
| Snubber Networks in IGBT Modules | Industrial AC-DC Front-End Rectification |
Use Scenario: RC-D snubber across IGBT collector-emitter in motor drives to suppress voltage overshoot. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive energy during turn-off. Use Value: 75 ns trr and 170A IFSM ensure reliable clamping of multi-kW transient energy without snap-back. |
Use Scenario: Bridge rectification in industrial SMPS with universal AC input (85–265 VAC) and PFC pre-regulator. IC Role / Device Role / Timing Role: Secondary-side output rectifier in LLC resonant converter delivering 4A at 12–24V. Use Value: AEC-Q101 qualification provides extended lifetime assurance beyond standard commercial-grade diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-4EY100-M3/45 | Same 4A/1000V rating, but TO-277 package (non-wettable flank); trr = 60 ns typ, VF = 1.25 V @ 4A | Lacks AEC-Q101 qualification and wettable flank; suitable for industrial but not automotive production | Prefer TUAU4MH where AOI compatibility or automotive compliance is required |
| ON Semiconductor MUR4100CT | Dual common-cathode configuration in TO-220AC; VF = 1.3 V @ 4A, trr = 60 ns, no wettable flank or AEC-Q101 | Through-hole mounting only; higher thermal resistance (RθJA ≈ 65°C/W); not automotive-qualified | Choose TUAU4MH for SMT scalability, thermal performance, and automotive traceability |
Compared with VS-4EY100-M3/45 and MUR4100CT, the TUAU4MH uniquely combines AEC-Q101 qualification, wettable flank leads for process control, and 1000V/4A capability in a thermally efficient SMT package - making it the only option meeting full automotive production requirements among these three.
Availability
TUAU4MH is available at Aetrix Electronics and suitable for automotive LED drivers, 48V–400V DC-DC converters, and industrial snubber networks requiring stable component supply, long-lifecycle availability, and AEC-Q101-compliant sourcing.
Supply support for TUAU4MH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, MOSFETs, and IGBTs, with global distribution and automotive qualification capabilities.
The TUAU4MH belongs to TSC's AEC-Q101-qualified ultrafast rectifier product line, engineered specifically for high-reliability automotive power conversion where high VRRM, fast recovery, and robust thermal performance are mandatory.
FAQ
What is the maximum junction temperature rating for the TUAU4MH?
The TUAU4MH has a maximum junction temperature (TJ) of +175°C, validated per its AEC-Q101 qualification. This rating applies under conditions where the device is mounted on a standard 16 mm × 16 mm Cu pad PCB and operated within absolute maximum ratings. The TUAU4MH maintains specified electrical performance up to this limit, enabling use in high-ambient under-hood automotive environments.
Does the TUAU4MH have wettable flank leads, and why does that matter?
Yes, the TUAU4MH features wettable flank leads per its mechanical data. This design allows solder to wick up the side of the lead during reflow, enabling automated optical inspection (AOI) of solder joint quality on the bottom side of the PCB - a critical requirement for automotive manufacturing process control and zero-defect assembly targets.
What is the reverse recovery time (trr) specification for the TUAU4MH?
The TUAU4MH has a maximum reverse recovery time (trr) of 75 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the Electrical Specifications table and supports high-frequency switching applications such as 500 kHz–1 MHz DC-DC converters where fast recovery minimizes switching loss and EMI generation.
Is the TUAU4MH RoHS and halogen-free compliant?
Yes, the TUAU4MH is RoHS compliant and halogen-free according to IEC 61249-2-21. These compliance statements are explicitly listed in the FEATURES section of the official Taiwan Semiconductor datasheet (Version A2111), confirming suitability for environmentally regulated markets including EU automotive and industrial equipment.
What packaging format is available for the TUAU4MH?
The TUAU4MH is supplied in tape-and-reel packaging with 6,000 units per reel, as specified in the ORDERING INFORMATION section. This format is compatible with high-speed SMT pick-and-place equipment and supports automated manufacturing workflows for automotive and industrial production volumes.
TUAU4MH 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):
- 1000 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 1.9 V @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 33pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 150°C
TUAU4MH FAQ
1.How can I place an order for TUAU4MH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAU4MH 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 TUAU4MH reliable?
The price and inventory of TUAU4MH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAU4MH is usually 5 days.
3.What payment methods are accepted for TUAU4MH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAU4MH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAU4MH?
TUAU4MH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAU4MH 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 TUAU4MH?
For technical support, including TUAU4MH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAU4MH requirements.
6.How does Aetrix verify that TUAU4MH is sourced from the original manufacturer or authorized distributors?
All TUAU4MH 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 TUAU4MH meets industry standards.
7.What is the process for return or replacement of TUAU4MH?
All TUAU4MH units undergo pre-shipment inspection (PSI). If there is an issue with TUAU4MH, 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 TUAU4MH part is unused and in its original packaging.
Return procedure for TUAU4MH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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