My Inquiry
My Account
Taiwan Semiconductor Corporation TUAS3DH
- Part No.:
- TUAS3DH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TUAS3DH.pdf
- Description:
- 3A, 200V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TUAS3DH from Taiwan Semiconductor is a 3A, 200V standard surface-mount rectifier diode in TO-277A (SMPC4.6U) package, featuring AEC-Q101 qualification, glass passivated junction, 100A surge capability, and wettable flanks for automotive-grade solder inspection. It serves as a primary output rectifier in DC-DC converters for engine control units.
For engineers reviewing the TUAS3DH datasheet, TUAS3DH pinout, TUAS3DH application, or TUAS3DH equivalent, key selection criteria include its 200V VRRM, 0.94V forward voltage at 3A/25°C, 5.4°C/W junction-to-lead thermal resistance, AEC-Q101 compliance, and TO-277A mechanical compatibility with automated SMT lines.
Technical Context
The TUAS3DH is a single-die, standard recovery silicon rectifier optimized for medium-voltage, medium-current automotive power conversion. Its glass-passivated chip junction ensures stable reverse leakage (<5µA at 25°C) and robustness against humidity and thermal cycling.
Designed for surface-mount operation on 16mm × 16mm copper pads, it delivers 3A average forward current with derating above 75°C ambient and supports 8.3ms single-half-sine surge up to 100A - critical for load dump and cold-crank transient handling in 12V vehicle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 24V nominal systems with transients. |
| IF | 3 A - Continuous average forward current at TL = 115°C; enables compact layout in space-constrained ECUs. |
| IFSM | 100 A - Peak non-repetitive surge current (8.3ms); withstands ISO 7637-2 Pulse 5a load dump events. |
| VF @ 3A, 25°C | 0.94 V max - Low conduction loss reduces heat generation and improves efficiency in 12–24V DC-DC stages. |
| RθJL | 5.4 °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 - Full automotive temperature range support per AEC-Q101, including under-hood environments. |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, single-anode/single-cathode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to input/high-side node in buck or flyback secondary; requires thermal pad connection for current sharing. |
| Cathode (Lead 2) | Forward current exit point | Connected to output rail; cathode band provides unambiguous polarity identification during automated placement and AOI. |
| Exposed Cathode Pad | Thermal and electrical return path | Integral part of cathode terminal; must be soldered to ≥16 mm² Cu area for rated IF and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - eliminates need for additional qualification by Tier-1 suppliers. |
| Glass passivated junction | Prevents moisture ingress and surface contamination, ensuring long-term reliability in high-humidity under-hood environments. |
| Wettable flank geometry | Enables automated optical inspection (AOI) of solder fillet height on side walls - critical for zero-defect automotive manufacturing. |
| Moisture sensitivity level 1 | No floor life limitation or baking required before reflow - simplifies SMT line logistics and reduces handling cost. |
Applications
| Engine Control Unit (ECU) Power Supply | LED Headlamp Driver |
|---|---|
Use Scenario: Rectifying switched output in synchronous buck converter supplying microcontroller, sensors, and actuators. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 3A load with transient surges up to 100A during cranking. Use Value: 0.94V VF minimizes conduction loss; TO-277A wettable flanks ensure solder joint integrity verification per IATF 16949. | Use Scenario: Secondary-side rectification in isolated flyback driver powering high-brightness LED arrays. IC Role / Device Role / Timing Role: Freewheeling diode managing inductive energy recovery and reverse voltage clamping. Use Value: 200V VRRM safely blocks reflected flyback spikes; 150°C TJMAX supports sealed headlamp thermal envelopes. |
| Start-Stop System DC-DC Converter | Automotive Snubber Network |
Use Scenario: Output rectification in bidirectional DC-DC converter managing battery-to-12V rail power during engine restart. IC Role / Device Role / Timing Role: High-reliability rectifier operating across wide temperature and voltage transients (−40°C to +125°C ambient). Use Value: AEC-Q101 qualification and −55°C to +150°C junction range guarantee functional safety compliance in ASIL-B systems. | Use Scenario: Voltage spike suppression across relay coils or ignition drivers in body control modules. IC Role / Device Role / Timing Role: Clamping diode absorbing inductive kickback energy with fast recovery characteristics. Use Value: 100A IFSM handles repeated 50–100A transients; low CJ (27pF) minimizes capacitive loading on sensitive control nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS3L200S | 3A, 200V Schottky; lower VF (0.52V), no reverse recovery, but higher IR (100µA) and non-AEC-Q101. | Suitable for non-automotive 12V supplies where efficiency > reliability; not qualified for under-hood use. | Select when lowest conduction loss is prioritized over automotive qualification and surge robustness. |
| SB320-E3/52 | 3A, 200V standard rectifier; same VRRM/IF, but TO-277 package lacks wettable flanks and AEC-Q101 certification. | Acceptable for industrial DC-DC where AOI traceability and automotive qualification are not required. | Choose only if AEC-Q101 and wettable flank inspection are outside design requirements. |
Compared with STPS3L200S and SB320-E3/52, the TUAS3DH uniquely combines AEC-Q101 qualification, wettable flank geometry, and 100A surge rating - making it the only option qualified for production automotive power conversion where process traceability and transient immunity are mandatory.
Availability
TUAS3DH is available at Aetrix Electronics and suitable for engine control units, LED headlamp drivers, start-stop DC-DC converters, and automotive snubber networks requiring stable component supply across extended product lifecycles.
Supply support for TUAS3DH 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 global automotive, industrial, and consumer markets since 1979.
The TUAS3DH belongs to TSC's AEC-Q101-qualified standard rectifier family, engineered specifically for high-reliability automotive power conversion where thermal robustness, solder joint verifiability, and transient surge immunity are essential.
FAQ
What is the maximum junction temperature rating for TUAS3DH?
The TUAS3DH has a maximum junction temperature (TJMAX) of +150°C, validated per AEC-Q101 stress testing. This allows reliable operation in under-hood environments where ambient temperatures reach +125°C, provided thermal design maintains junction temperature below this limit using the specified 16mm × 16mm copper pad.
Is TUAS3DH pin-compatible with other parts in the TUAS3xH series?
Yes, all TUAS3xH variants-including TUAS3DH, TUAS3GH, TUAS3JH, TUAS3KH, and TUAS3MH-share identical TO-277A (SMPC4.6U) package dimensions, pinout, and thermal pad layout. Only the VRRM rating differs (200V to 1000V), enabling drop-in voltage scalability without PCB redesign.
Does TUAS3DH require baking before reflow soldering?
No, TUAS3DH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it has unlimited floor life and does not require dry-packaging or pre-reflow baking. This simplifies SMT line handling and eliminates moisture-related popcorning risk during lead-free reflow.
What is the forward voltage specification for TUAS3DH at elevated temperature?
At 3.0A and 125°C junction temperature, the TUAS3DH forward voltage is 0.83V (typical) and ≤0.94V (max at 25°C). The negative temperature coefficient of VF ensures reduced conduction loss at high operating temperatures, improving thermal stability in automotive power stages.
How is polarity indicated on the TUAS3DH package?
Polarity on the TUAS3DH is indicated by a visible cathode band printed on the molded case surface. This band aligns with Lead 2 (cathode terminal) and is used for automated optical inspection (AOI) and manual verification during assembly and repair.
TUAS3DH 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 27pF @ 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
TUAS3DH FAQ
1.How can I place an order for TUAS3DH through Aetrix?
Please submit a Request for Quotation (RFQ) for TUAS3DH 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 TUAS3DH reliable?
The price and inventory of TUAS3DH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TUAS3DH is usually 5 days.
3.What payment methods are accepted for TUAS3DH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TUAS3DH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TUAS3DH?
TUAS3DH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TUAS3DH 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 TUAS3DH?
For technical support, including TUAS3DH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TUAS3DH requirements.
6.How does Aetrix verify that TUAS3DH is sourced from the original manufacturer or authorized distributors?
All TUAS3DH 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 TUAS3DH meets industry standards.
7.What is the process for return or replacement of TUAS3DH?
All TUAS3DH units undergo pre-shipment inspection (PSI). If there is an issue with TUAS3DH, 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 TUAS3DH part is unused and in its original packaging.
Return procedure for TUAS3DH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TUAS3DH 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
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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…
