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Taiwan Semiconductor Corporation PUAD8DH
- Part No.:
- PUAD8DH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
PUAD8DH.pdf
- Description:
- 19NS, 8A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
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Product details
Overview
PUAD8DH from Taiwan Semiconductor is a 200V, 8A ultra-fast surface-mount rectifier in ThinDPAK package, featuring 25ns reverse recovery time, 1.00V max forward voltage at 8A/25°C, and AEC-Q101 qualification for automotive power conversion. It serves as the high-voltage variant in the PUAD8xH family for snubber circuits and high-frequency DC/DC converters.
For engineers reviewing the PUAD8DH datasheet, PUAD8DH pinout, PUAD8DH application, or PUAD8DH equivalent, key selection criteria include its 200V VRRM, 150A IFSM surge rating, RθJC = 2.0°C/W thermal resistance, and ThinDPAK mechanical compatibility with automated SMT assembly lines.
Technical Context
This device is a single-die planar silicon rectifier optimized for fast switching with low Qrr (35nC) and low trr (19–25ns). Its junction-to-case thermal resistance of 2.0°C/W enables efficient heat transfer to PCB copper or external heatsinks when mounted per JEDEC TO-252-AE outline.
The PUAD8DH operates across –55°C to +175°C junction temperature range and supports high-reliability automotive applications via AEC-Q101 qualification, moisture sensitivity level 1, and halogen-free, RoHS-compliant construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in high-voltage DC/DC or snubber networks |
| IF | 8 A - Continuous forward current rating at TC = 115°C; determines steady-state power handling capability |
| IFSM | 150 A - Non-repetitive surge current (8.3ms); supports transient overload tolerance in power supply startup or fault conditions |
| VF @ 8A, 25°C | ≤1.00 V - Forward voltage drop; directly impacts conduction loss and thermal design in high-efficiency converters |
| trr | 19–25 ns - Reverse recovery time; enables operation at >100 kHz switching frequencies with minimal switching loss |
| RθJC | 2.0 °C/W - Junction-to-case thermal resistance; allows direct thermal path modeling to heatsink or copper pour |
| Qrr | 35 nC - Reverse recovery charge; critical for EMI control and diode stress in hard-switched topologies |
Pinout & Package
Package: ThinDPAK (JEDEC TO-252-AE variation), 3-terminal surface-mount package with exposed thermal pad (Pin 2), matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Primary current entry point; electrically connected to die substrate; requires appropriate trace width for 8A continuous current |
| 2 (Cathode / Thermal Pad) | Cathode output & thermal interface | Current exit path and primary thermal conduction route to PCB copper; must be soldered to large copper area for RθJC performance |
| 3 (Cathode) | Cathode connection | Secondary cathode terminal; used for current routing flexibility and improved layout symmetry in high-current paths |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST - required for under-hood power modules |
| Ultra-fast trr ≤25 ns | Enables high-frequency operation (>200 kHz) with reduced switching losses and lower EMI generation in resonant converters |
| RθJC = 2.0°C/W | Allows direct thermal coupling to PCB heatsinking without external hardware - simplifies thermal design in space-constrained modules |
| Moisture Sensitivity Level 1 | No bake preconditioning required before reflow; supports standard SMT assembly without process modification |
| Halogen-free & RoHS compliant | Meets global environmental compliance requirements for automotive and industrial end equipment without compromising electrical performance |
Applications
| Automotive DC/DC Converters | Industrial Snubber Circuits |
|---|---|
Use Scenario: High-efficiency 48V–12V bidirectional DC/DC converter in ADAS domain controllers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asymmetrical half-bridge topology. Use Value: 200V VRRM withstands voltage spikes during load dump; 25ns trr minimizes dead-time losses and improves efficiency above 150 kHz. | Use Scenario: RC snubber network across IGBTs in motor drive inverters. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing turn-off energy. Use Value: Low Qrr (35nC) reduces snubber dissipation; AEC-Q101 qualification ensures reliability in harsh thermal cycling environments. |
| High-Frequency SMPS | On-Board Charger (OBC) Rectification |
Use Scenario: Secondary-side rectification in 300–500 kHz LLC resonant converters for telecom power supplies. IC Role / Device Role / Timing Role: Ultra-fast freewheeling diode in synchronous rectification auxiliary paths. Use Value: 1.00V VF at 8A limits conduction loss; 175°C TJMAX supports compact thermal design without derating. | Use Scenario: Primary-side AC input bridge rectification in 6.6 kW EV on-board chargers. IC Role / Device Role / Timing Role: High-current, high-voltage discrete rectifier replacing multi-diode arrays. Use Value: ThinDPAK footprint enables dense layout; 150A IFSM handles inrush surges during grid connection events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06DJF | 600V VRRM, 8A IF, 35ns trr, TO-252 package, no AEC-Q101 | Higher voltage rating but lacks automotive qualification; higher VF (1.15V) | Preferred where system-level voltage margin exceeds 200V and AEC-Q101 is not mandated |
| VS-8EWH06FN-M3 | 600V VRRM, 8A IF, 20ns trr, DPAK package, AEC-Q101 qualified | Same qualification and faster trr, but 600V rating increases cost and capacitance (CJ = 120pF vs. 101pF) | Selected when higher voltage headroom and fastest recovery are prioritized over cost and capacitive loading |
Compared with STTH8R06DJF and VS-8EWH06FN-M3, the PUAD8DH offers optimal balance of 200V rating, AEC-Q101 compliance, and low CJ (101pF) for noise-sensitive automotive DC/DC designs where overvoltage margin is tightly constrained.
Availability
PUAD8DH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial snubber circuits, and high-frequency SMPS requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for PUAD8DH 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability discrete devices for automotive and industrial markets.
The PUAD8xH series was developed specifically for AEC-Q101-compliant, high-frequency rectification in next-generation automotive power electronics, emphasizing thermal efficiency, fast recovery, and SMT manufacturability.
FAQ
What is the maximum junction temperature rating for PUAD8DH?
The PUAD8DH has a maximum junction temperature (TJMAX) of +175°C, verified per AEC-Q101 stress testing. This rating enables operation in under-hood automotive environments and high-power-density industrial converters without thermal derating below full 8A current, provided RθJC = 2.0°C/W thermal path is maintained to the PCB.
Does PUAD8DH have AEC-Q101 qualification?
Yes, PUAD8DH is explicitly AEC-Q101 qualified per the official Taiwan Semiconductor datasheet Version A2302. This includes qualification for temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (UHAST), confirming suitability for automotive powertrain and body electronics applications.
What is the marking code printed on the PUAD8DH device body?
The PUAD8DH is marked with "UAD8D" on its top surface, as specified in the Absolute Maximum Ratings table of the Taiwan Semiconductor datasheet. This distinguishes it from the 100V variant PUAD8BH, which carries the marking "UAD8B".
How does the ThinDPAK package of PUAD8DH differ from standard TO-252?
The PUAD8DH uses ThinDPAK - a JEDEC TO-252-AE variation with reduced profile (max height 1.40mm vs. 2.39mm for standard TO-252) and tighter dimensional tolerances. Its thinner mold compound and optimized leadframe improve thermal performance (RθJC = 2.0°C/W) and support high-density PCB layouts in automotive modules.
What is the reverse recovery charge (Qrr) specification for PUAD8DH?
The PUAD8DH specifies Qrr = 35 nC under standard test conditions (IF = 8.0A, di/dt = 200A/µs, VR = 100V). This low charge value directly reduces switching losses and EMI in high-frequency hard-switched converters, distinguishing it from slower general-purpose rectifiers with Qrr > 60 nC.
PUAD8DH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 200 V
- Capacitance @ Vr, F:
- 101pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ThinDPAK
- Operating Temperature - Junction:
- -55°C ~ 175°C
PUAD8DH FAQ
1.How can I place an order for PUAD8DH through Aetrix?
Please submit a Request for Quotation (RFQ) for PUAD8DH 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 PUAD8DH reliable?
The price and inventory of PUAD8DH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PUAD8DH is usually 5 days.
3.What payment methods are accepted for PUAD8DH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PUAD8DH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PUAD8DH?
PUAD8DH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PUAD8DH 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 PUAD8DH?
For technical support, including PUAD8DH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PUAD8DH requirements.
6.How does Aetrix verify that PUAD8DH is sourced from the original manufacturer or authorized distributors?
All PUAD8DH 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 PUAD8DH meets industry standards.
7.What is the process for return or replacement of PUAD8DH?
All PUAD8DH units undergo pre-shipment inspection (PSI). If there is an issue with PUAD8DH, 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 PUAD8DH part is unused and in its original packaging.
Return procedure for PUAD8DH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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