My Inquiry
My Account
Taiwan Semiconductor Corporation TUAR4DH
- Part No.:
- TUAR4DH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAR4DH.pdf
- Description:
- 150NS, 4A, 200V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TUAR4DH from Taiwan Semiconductor is a 4A, 200V fast recovery surface-mount rectifier in TO-277A (SMPC4.6U) package, featuring AEC-Q101 qualification, glass passivated junction, wettable flanks, and 90A surge capability - deployed in automotive DC-DC converters and snubber circuits.
For engineers reviewing the TUAR4DH datasheet, TUAR4DH pinout, TUAR4DH application, or TUAR4DH equivalent, key selection criteria include its 200V VRRM, 1.13V forward voltage at 4A/25°C, 150ns reverse recovery time, thermal resistance RθJL = 5.1°C/W, and AEC-Q101 compliance for under-hood reliability.
Technical Context
This single-die fast recovery rectifier uses planar epitaxial construction with glass passivation to achieve stable reverse leakage (<5µA @ 25°C) and low junction capacitance (31pF @ 1MHz, 4V). Its TO-277A package enables automated optical inspection via wettable flanks and supports high-density PCB layouts.
The device operates across –55°C to +150°C junction temperature range, with derated forward current above 85°C ambient, and delivers 150ns trr under IF = 0.5A / IR = 1.0A / Irr = 0.25A test conditions - optimized for switching frequencies up to several hundred kHz in automotive power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC flyback or snubber clamp circuits |
| IF | 4 A - continuous average forward current at TL = 115°C on 16mm × 16mm Cu pad; sets baseline conduction capacity |
| IFSM | 90 A - non-repetitive surge current (8.3ms half-sine); supports transient overload in automotive load dump scenarios |
| trr | 150 ns - reverse recovery time; enables efficient operation in 100–500 kHz switching topologies with reduced switching loss |
| VF @ 4A, 25°C | 1.13 V (max) - forward voltage drop; directly impacts conduction loss and thermal design in high-current paths |
| RθJL | 5.1 °C/W - junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper for passive cooling |
| Junction Temp Range | –55°C to +150°C - qualified for under-hood automotive environments per AEC-Q101 stress testing |
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 circuit (e.g., ground return or switch node) |
| Cathode | Forward current exit point | Marked by band; connects to higher-potential rail (e.g., output capacitor or bus) |
| Lead (Anode/Cathode) | Thermal and electrical interface | Wettable flank geometry allows AOI verification; serves as primary heat path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD robustness - required for engine control and lighting modules |
| Glass passivated junction | Prevents moisture ingress and surface contamination, ensuring long-term reliability in humid under-hood environments |
| Wettable flank leads | Enables automated optical inspection of solder joint integrity on bottom-side SMT assembly |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement before reflow - simplifies manufacturing logistics |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives for environmentally restricted materials |
Applications
| Automotive DC-DC Converter | LED Headlamp Driver |
|---|---|
Use Scenario: High-efficiency buck-boost converter supplying 12V auxiliary rails from 48V battery in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier handling 4A continuous current with fast recovery to minimize switching loss at 250kHz. Use Value: 150ns trr and 1.13V VF reduce conduction and recovery losses, improving system efficiency by ~1.2% vs. standard FRDs. | Use Scenario: Constant-current LED driver for adaptive front-lighting systems (AFS), requiring high reliability in vibration-prone mounting locations. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck controller stage, clamping inductive kick during MOSFET off-time. Use Value: AEC-Q101 qualification and –55°C to +150°C operation ensure functional safety across extreme ambient conditions. |
| Snubber Network | On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: RC snubber across IGBTs in EV traction inverter gate drive isolation stages to suppress voltage spikes. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing turn-off energy with minimal stored charge (Qrr implied by trr = 150ns). Use Value: Low Qrr reduces snubber dissipation and enables smaller capacitor sizing without compromising spike suppression. | Use Scenario: Auxiliary 12V supply derived from OBC's high-voltage DC link for control logic and communication ICs. IC Role / Device Role / Timing Role: Primary rectifier in flyback or forward converter delivering isolated 12V/1A output. Use Value: 90A IFSM withstands inrush surges during cold start; RθJL = 5.1°C/W enables compact heatsinkless layout. |
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 | 600V VRRM, 130ns trr, TO-277A package, no AEC-Q101 rating | Higher voltage rating but lacks automotive qualification; suitable for industrial SMPS only | Select when >200V blocking is needed and AEC-Q101 is not required |
| VS-4EYH02-M3/45 | 200V VRRM, 120ns trr, TO-277A, AEC-Q101 qualified, VF = 1.15V @ 4A | Nearly identical specs; slightly faster recovery but marginally higher VF | Drop-in alternative where tighter trr tolerance is prioritized over minimal VF reduction |
Compared with STTH4L06S and VS-4EYH02-M3/45, TUAR4DH uniquely combines 200V rating, AEC-Q101 qualification, and 150ns trr in a cost-optimized TO-277A footprint - making it the preferred choice for automotive 12V/48V DC-DC and lighting systems requiring validated reliability.
Availability
TUAR4DH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and snubber networks requiring stable component supply, AEC-Q101 compliance, and high surge robustness.
Supply support for TUAR4DH 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 automotive and industrial markets.
The TUAR4DH belongs to TSC's AEC-Q101-qualified fast recovery rectifier product line, engineered specifically for high-reliability automotive power conversion where thermal stability, surge immunity, and optical solder inspection are critical.
FAQ
What is the peak repetitive reverse voltage rating for TUAR4DH?
The TUAR4DH has a peak repetitive reverse voltage (VRRM) rating of 200 V. This value is fixed for the TUAR4DH variant and distinguishes it from higher-voltage members of the same family (e.g., TUAR4GH = 400 V). It defines the maximum reverse-biased voltage the device can block continuously without breakdown under specified thermal conditions.
Is TUAR4DH qualified for automotive applications?
Yes, TUAR4DH is AEC-Q101 qualified. This certification confirms that the device has passed stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood automotive systems such as DC-DC converters and LED lighting drivers.
What is the reverse recovery time (trr) of TUAR4DH and how is it measured?
The TUAR4DH has a maximum reverse recovery time (trr) of 150 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter reflects the speed at which the device transitions from conduction to blocking state, directly impacting switching loss in high-frequency power converters.
Does TUAR4DH have wettable flank leads and why does it matter?
Yes, TUAR4DH features wettable flank leads per its TO-277A (SMPC4.6U) package specification. This design enables automated optical inspection (AOI) of solder fillets on the side of the lead, improving process yield and field reliability in automotive SMT assembly lines where full X-ray inspection is cost-prohibitive.
What is the maximum forward voltage drop of TUAR4DH at rated current?
The TUAR4DH exhibits a maximum forward voltage (VF) of 1.4 V at IF = 4 A and TJ = 25°C, with a typical value of 1.13 V under the same conditions. This VF directly determines conduction loss and thermal loading in high-current rectification paths, especially in space-constrained automotive modules.
TUAR4DH 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):
- 200 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):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 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
TUAR4DH FAQ
1.How can I place an order for TUAR4DH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAR4DH 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 TUAR4DH reliable?
The price and inventory of TUAR4DH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAR4DH is usually 5 days.
3.What payment methods are accepted for TUAR4DH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAR4DH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAR4DH?
TUAR4DH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAR4DH 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 TUAR4DH?
For technical support, including TUAR4DH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAR4DH requirements.
6.How does Aetrix verify that TUAR4DH is sourced from the original manufacturer or authorized distributors?
All TUAR4DH 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 TUAR4DH meets industry standards.
7.What is the process for return or replacement of TUAR4DH?
All TUAR4DH units undergo pre-shipment inspection (PSI). If there is an issue with TUAR4DH, 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 TUAR4DH part is unused and in its original packaging.
Return procedure for TUAR4DH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TUAR4DH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
