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Taiwan Semiconductor Corporation TUAR4JH
- Part No.:
- TUAR4JH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAR4JH.pdf
- Description:
- 250NS, 4A, 600V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
TUAR4JH from Taiwan Semiconductor is a 4A, 600V fast recovery surface-mount rectifier diode in TO-277A (SMPC4.6U) package, featuring AEC-Q101 qualification, glass passivated junction, and wettable flanks for automotive-grade solder joint inspection. It delivers 250 ns reverse recovery time at IF = 0.5A/IR = 1.0A/Irr = 0.25A and supports DC-DC converters and car lighting systems requiring robust surge handling.
For engineers reviewing the TUAR4JH datasheet, TUAR4JH pinout, TUAR4JH application, or TUAR4JH equivalent, key selection criteria include its 600V VRRM rating, 90A IFSM surge capability, 1.13V forward voltage at 4A/25°C, AEC-Q101 compliance, and TO-277A thermal performance with RθJL = 5.1°C/W.
Technical Context
The TUAR4JH is a single-die, unidirectional fast recovery rectifier optimized for high-efficiency switching power supplies. Its glass passivated junction ensures stable reverse leakage (<5 µA at 25°C, <12 µA at 125°C) and long-term reliability under thermal cycling.
Designed for automotive environments, it meets JESD201 Class 2 whisker resistance and moisture sensitivity level 1 (per J-STD-020), with matte tin-plated leads and UL 94V-0 molding compound - enabling use in under-hood lighting and snubber circuits where thermal stress and solder joint integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - maximum repetitive reverse voltage the device blocks without breakdown; defines usable input voltage range in DC-DC stages |
| IF | 4 A - continuous average forward current at TA = 25°C; determines steady-state power handling capacity |
| IFSM | 90 A - non-repetitive surge current (8.3 ms half-sine); enables survival during load dump or inrush events |
| trr | 250 ns - reverse recovery time under specified test conditions; directly impacts switching losses in high-frequency converters |
| RθJL | 5.1 °C/W - junction-to-lead thermal resistance; enables direct thermal path to PCB copper for efficient heat dissipation |
| VF @ 4A/25°C | 1.13 V (max 1.4 V) - forward voltage drop defining conduction loss and self-heating at rated current |
| Junction Temp Range | –55°C to +150°C - operational temperature envelope supporting under-hood automotive deployment |
Pinout & Package
TO-277A (SMPC4.6U) surface-mount package with two terminals: anode and cathode. Cathode identified by molded band on case. Matte tin-plated leads support automated reflow and visual solder inspection via wettable flanks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; must be routed with adequate copper area for thermal management |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by visible band; connects to higher-potential node and serves as primary heat transfer path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, HTRB - enables use in safety-critical lighting and power modules |
| Glass passivated junction | Hermetic protection against humidity and contamination; maintains stable IR and VF over lifetime in harsh environments |
| Wettable flank leads | Vertical sidewall plating allows automated optical inspection (AOI) of solder fillet height and wetting quality - improves manufacturing yield |
| High surge capability (90A IFSM) | Withstands transient overcurrents common in automotive load dump scenarios without parametric shift or failure |
| Moisture sensitivity level 1 | No baking required prior to reflow; simplifies SMT line integration and reduces production delays |
Applications
| Automotive LED Headlamp Driver | On-Board Charger Snubber Circuit |
|---|---|
Use Scenario: High-brightness LED arrays in adaptive front-lighting systems require stable DC supply with low EMI and thermal resilience. IC Role / Device Role / Timing Role: TUAR4JH serves as output rectifier in flyback or buck-boost converter stage, converting switched AC to regulated DC while minimizing switching losses. Use Value: 250 ns trr and 1.13 V VF at 4A reduce conduction and recovery losses, improving system efficiency and thermal margin in confined headlamp housings. | Use Scenario: Snubber networks in OBC power factor correction (PFC) and DC-DC stages suppress voltage spikes during MOSFET turn-off. IC Role / Device Role / Timing Role: TUAR4JH functions as fast clamping diode in RCD snubber, absorbing inductive energy and limiting dv/dt across switching devices. Use Value: 600 V VRRM and 90 A IFSM ensure reliable clamping under repeated surge conditions; glass passivation prevents parameter drift during long-term operation. |
| 12V/48V Dual-Voltage DC-DC Converter | Commercial Vehicle Interior Lighting Supply |
Use Scenario: Bidirectional or step-down conversion between 48V battery rail and 12V auxiliary systems in modern commercial vehicles. IC Role / Device Role / Timing Role: TUAR4JH operates as synchronous rectifier or freewheeling diode in synchronous buck topology, conducting during low-side switch off-time. Use Value: RθJL = 5.1°C/W enables direct thermal coupling to PCB copper, maintaining junction temperature below 150°C even at full 4A load in compact layouts. | Use Scenario: Power supply for interior dome lights, map lights, and courtesy lighting in trucks and buses exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: TUAR4JH acts as input rectifier in isolated offline SMPS, converting rectified AC or vehicle battery input to isolated low-voltage DC. Use Value: AEC-Q101 qualification and –55°C to +150°C operating range guarantee reliability across extreme cold cranking and hot soak conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06S | 600 V VRRM, 4 A IF, 100 ns trr, TO-277A package, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial DC-DC where AEC-Q101 is not mandated | Select when faster recovery (100 ns vs. 250 ns) is prioritized over automotive compliance |
| VS-4EY60-M3/45 | 600 V VRRM, 4 A IF, 200 ns trr, TO-277A, AEC-Q101 qualified, VF = 1.25 V (max) at 4A | Higher VF increases conduction loss; identical thermal and packaging specs enable drop-in evaluation | Choose when tighter trr tolerance (200 ns) is needed without sacrificing qualification status |
Compared with STTH4L06S and VS-4EY60-M3/45, the TUAR4JH offers balanced trade-offs: AEC-Q101 compliance plus 250 ns trr and 1.13 V VF - making it optimal for cost-sensitive automotive lighting where moderate recovery speed suffices and thermal performance is critical.
Availability
TUAR4JH is available at Aetrix Electronics and suitable for automotive LED drivers, on-board charger snubbers, and dual-voltage DC-DC converters requiring stable component supply, AEC-Q101 assurance, and TO-277A thermal performance.
Supply support for TUAR4JH 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 rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The TUAR4xH series was developed specifically for AEC-Q101-compliant automotive power conversion - targeting high-reliability rectification in lighting, charging, and body electronics where thermal robustness and process consistency are essential.
FAQ
What is the peak repetitive reverse voltage rating for TUAR4JH?
The TUAR4JH has a peak repetitive reverse voltage (VRRM) rating of 600 V. This value is explicitly specified in the Absolute Maximum Ratings table for the TUAR4JH variant and defines the maximum reverse voltage the device can block repeatedly without breakdown. It is critical for selecting appropriate input voltage margins in DC-DC and snubber designs. The TUAR4JH datasheet confirms this rating applies only to the 'J' version - other variants like TUAR4DH (200 V) and TUAR4MH (1000 V) differ.
Is TUAR4JH qualified for automotive applications?
Yes, TUAR4JH is AEC-Q101 qualified. This qualification is explicitly stated in the FEATURES section of the official TSC documentation and verified across all electrical, thermal, and mechanical test reports for the TUAR4xH family. The qualification covers temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - confirming suitability for under-hood and interior automotive systems.
What is the reverse recovery time (trr) of TUAR4JH and under what conditions is it measured?
The TUAR4JH has a maximum reverse recovery time (trr) of 250 ns. This value is measured under the condition: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A, as confirmed in the ELECTRICAL SPECIFICATIONS table. The test uses a half-sine waveform with specified di/dt and voltage rise rate. This trr value directly influences switching loss in high-frequency converters and is distinct from faster variants like TUAR4KH (500 ns) and slower ones like TUAR4DH (150 ns).
Does TUAR4JH have wettable flank leads and why does that matter?
Yes, TUAR4JH features wettable flank leads - a design element explicitly listed in the FEATURES section. These vertically plated sidewalls allow automated optical inspection (AOI) of solder fillet formation during reflow, improving detection of insufficient solder, bridging, or voiding. This enhances manufacturing yield and field reliability, especially in automotive production where zero-defect assembly is required.
What is the thermal resistance from junction to lead (RθJL) for TUAR4JH and how is it used in layout design?
The TUAR4JH has a typical junction-to-lead thermal resistance (RθJL) of 5.1°C/W, measured with the device mounted on a 16 mm × 16 mm Cu pad test board. This parameter indicates the thermal path efficiency from die to PCB copper through the cathode lead. Layout designers use it to size copper pour area and thermal vias - for example, achieving ≤50°C temperature rise at 4 A requires ≤255°C·cm² of thermal copper area assuming 5.1°C/W and 1.13 V VF.
TUAR4JH 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:
- 1.4 V @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- 31pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 150°C
TUAR4JH FAQ
1.How can I place an order for TUAR4JH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAR4JH 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 TUAR4JH reliable?
The price and inventory of TUAR4JH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAR4JH is usually 5 days.
3.What payment methods are accepted for TUAR4JH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAR4JH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAR4JH?
TUAR4JH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAR4JH 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 TUAR4JH?
For technical support, including TUAR4JH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAR4JH requirements.
6.How does Aetrix verify that TUAR4JH is sourced from the original manufacturer or authorized distributors?
All TUAR4JH 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 TUAR4JH meets industry standards.
7.What is the process for return or replacement of TUAR4JH?
All TUAR4JH units undergo pre-shipment inspection (PSI). If there is an issue with TUAR4JH, 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 TUAR4JH part is unused and in its original packaging.
Return procedure for TUAR4JH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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