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Taiwan Semiconductor Corporation TUAS4JH
- Part No.:
- TUAS4JH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAS4JH.pdf
- Description:
- 4A, 600V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
TUAS4JH from Taiwan Semiconductor is a 4A, 600V glass-passivated standard surface-mount rectifier in TO-277A (SMPC4.6U) package, featuring AEC-Q101 qualification, wettable flanks, and 120A surge capability; used in automotive lighting and DC-DC converters where high-reliability unidirectional power conversion is required.
For engineers reviewing the TUAS4JH datasheet, TUAS4JH pinout, TUAS4JH application, or TUAS4JH equivalent, key selection criteria include repetitive peak reverse voltage (600 V), forward voltage at 4A/25°C (0.95 V max), junction-to-lead thermal resistance (5.2 °C/W), and AEC-Q101 qualification for automotive-grade deployment.
Technical Context
The TUAS4JH is a single-die, silicon planar junction standard rectifier with glass-passivated chip construction, enabling stable operation up to 150°C junction temperature. Its TO-277A package features matte tin-plated leads compliant with J-STD-002 and wettable flanks for automated optical inspection.
Electrical behavior is defined by low forward voltage (0.95 V max at 4A/25°C), low reverse leakage (5 µA max at 25°C), and junction capacitance of 33 pF at 1 MHz/4 V - characteristics optimized for snubber networks and medium-voltage DC-DC output rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - maximum repetitive reverse blocking voltage; defines safe operating range in 48–60 V automotive bus-derived systems |
| IF | 4 A - continuous average forward current; supports sustained power delivery in compact surface-mount layouts |
| IFSM | 120 A - non-repetitive surge current (8.3 ms); withstands load dump transients in vehicle electrical systems |
| VF @ 4A/25°C | 0.95 V max - forward conduction loss directly impacts efficiency and thermal design in 12–48 V DC-DC stages |
| RθJL | 5.2 °C/W - junction-to-lead thermal resistance; enables direct PCB copper pad heat sinking without external heatsink |
| IR @ 25°C | 5 µA max - low reverse leakage ensures minimal standby power loss in always-on automotive modules |
| CJ | 33 pF - junction capacitance at 1 MHz/4 V; critical for EMI filtering and snubber tuning in switching converters |
Pinout & Package
TO-277A (SMPC4.6U) package: surface-mount, 3-terminal configuration with cathode band marking; matte tin-plated leads, wettable flank geometry, UL 94V-0 molding compound, and 0.107 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to lower-potential side (e.g., switch node or ground return) in buck or flyback secondary-side rectification |
| Cathode | Output terminal for forward conduction | Connected to positive output rail; polarity marked by visible cathode band on device body |
| Lead (Case) | Thermal and mechanical interface | Electrically isolated metal lead serves as primary thermal path to PCB copper; no internal connection to die |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity bias, and mechanical shock per JESD47 |
| Glass-passivated junction | Eliminates need for conformal coating in humid environments; improves long-term reliability vs. epoxy-passivated alternatives |
| Wettable flank leads | Enables automated solder joint inspection (AOI) without X-ray; supports IPC-A-610 Class 3 assembly verification |
| Junction-to-lead thermal resistance (5.2 °C/W) | Allows >3 W power dissipation with ≤15°C rise over lead temperature when mounted on 16 mm × 16 mm Cu pad |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement prior to reflow; simplifies SMT line logistics and inventory handling |
Applications
| Automotive LED Headlamp Driver | 48V–12V DC-DC Converter |
|---|---|
Use Scenario: High-brightness LED array powered from vehicle 48 V bus with PWM dimming and thermal foldback protection. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology, converting switched AC to regulated DC for LED string supply. Use Value: 600 V VRRM safely handles reflected voltage spikes during MOSFET turn-off; 120 A IFSM absorbs transient energy from inductive kickback. | Use Scenario: Bidirectional or step-down converter supplying 12 V auxiliary systems (infotainment, ADAS sensors) from 48 V mild-hybrid architecture. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in phase-shifted full-bridge or LLC resonant converter. Use Value: 0.95 V VF max reduces conduction loss at 4 A load; wettable flanks ensure solder joint integrity across thermal cycles in engine bay mounting. |
| Automotive Cabin Lighting Module | Snubber Network in Ignition Coil Driver |
Use Scenario: Constant-current LED driver for ambient and reading lights, operating continuously with pulse-width modulated brightness control. IC Role / Device Role / Timing Role: Input rectifier for onboard AC/DC or DC/DC stage powering LED driver ICs and microcontrollers. Use Value: AEC-Q101 qualification guarantees operation across -40°C to +125°C ambient; 150°C TJ max allows derating margin under sealed enclosure conditions. | Use Scenario: Clamping diode in RCD snubber circuit protecting high-side IGBT in gasoline/diesel engine ignition coil driver. IC Role / Device Role / Timing Role: Fast-recovery clamping element absorbing inductive energy during IGBT turn-off. Use Value: 33 pF junction capacitance minimizes capacitive loading on gate drive loop; low IR prevents DC bias drift in high-impedance snubber resistor network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06S | 600 V VRRM, 4 A IF, TO-277A package, but VF = 1.15 V max at 4A/25°C; no AEC-Q101 qualification | Industrial power supplies only; not approved for automotive underhood use | Select TUAS4JH when AEC-Q101 compliance and lower VF are required in automotive designs |
| VS-4EYH06-M3 | 600 V VRRM, 4 A IF, TO-277A, VF = 0.92 V typ at 4A/25°C, but IFSM = 100 A (vs. 120 A) and no wettable flank feature | Suitable for commercial DC-DC converters; lacks AOI-ready leads for automotive manufacturing traceability | Choose TUAS4JH for production lines requiring automated optical solder inspection and higher surge margin |
Compared with STTH4L06S and VS-4EYH06-M3, the TUAS4JH uniquely combines AEC-Q101 qualification, wettable flanks, 120 A surge rating, and 0.95 V VF max - making it the only option meeting full Tier-1 automotive assembly and reliability requirements among these three.
Availability
TUAS4JH is available at Aetrix Electronics and suitable for automotive lighting, 48V–12V DC-DC converters, and snubber networks requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for TUAS4JH 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, specializing in power devices, rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The TUAS4JH belongs to TSC's AEC-Q101-qualified surface-mount rectifier family, engineered specifically for automotive power conversion systems demanding robust surge immunity, thermal stability, and process-compatible packaging.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for TUAS4JH?
The TUAS4JH has a VRRM of 600 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2111). This rating defines the highest reverse voltage the device can block repeatedly without breakdown and is validated under standard test conditions per JEDEC standards. The TUAS4JH must not be operated beyond this limit in any circuit configuration.
Is TUAS4JH qualified for automotive applications?
Yes, TUAS4JH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. The TUAS4JH meets all requirements for underhood automotive use, including engine control units and lighting modules where reliability across -40°C to +125°C ambient is mandatory.
What package type does TUAS4JH use, and what are its key mechanical features?
TUAS4JH uses the TO-277A (SMPC4.6U) surface-mount package. Key mechanical features include wettable flank leads for automated optical inspection, matte tin-plated terminals compliant with J-STD-002, UL 94V-0 molding compound, and polarity indicated by a visible cathode band. The device weighs approximately 0.107 g and is rated MSL Level 1.
What is the forward voltage (VF) specification for TUAS4JH at 4A and 25°C?
The TUAS4JH has a maximum forward voltage of 0.95 V at 4 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the upper limit for conduction loss in thermal design calculations. Typical VF at this condition is 0.89 V.
Does TUAS4JH have a junction capacitance specification, and what is its value?
Yes, TUAS4JH has a specified junction capacitance (CJ) of 33 pF, measured at 1 MHz and 4.0 V reverse bias, per the Electrical Specifications table. This parameter is critical for snubber design and EMI filter modeling in switching power supplies. The value applies specifically to TUAS4DH through TUAS4JH variants; TUAS4KH and TUAS4MH have lower CJ (28 pF).
TUAS4JH 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):
- 600 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 4 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- 33pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC4.6U)
- Operating Temperature - Junction:
- -55°C ~ 150°C
TUAS4JH FAQ
1.How can I place an order for TUAS4JH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAS4JH 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 TUAS4JH reliable?
The price and inventory of TUAS4JH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAS4JH is usually 5 days.
3.What payment methods are accepted for TUAS4JH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAS4JH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAS4JH?
TUAS4JH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAS4JH 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 TUAS4JH?
For technical support, including TUAS4JH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAS4JH requirements.
6.How does Aetrix verify that TUAS4JH is sourced from the original manufacturer or authorized distributors?
All TUAS4JH 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 TUAS4JH meets industry standards.
7.What is the process for return or replacement of TUAS4JH?
All TUAS4JH units undergo pre-shipment inspection (PSI). If there is an issue with TUAS4JH, 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 TUAS4JH part is unused and in its original packaging.
Return procedure for TUAS4JH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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