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Taiwan Semiconductor Corporation PUAD4DH
- Part No.:
- PUAD4DH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
PUAD4DH.pdf
- Description:
- 20NS, 4A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:3,884
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Product details
Overview
PUAD4DH from Taiwan Semiconductor is a 200V, 4A ultra-fast surface-mount rectifier in ThinDPAK package, featuring 25ns reverse recovery time, 0.92V max forward voltage at 4A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency freewheeling or snubber diode in DC/DC converters operating up to several hundred kHz.
For engineers reviewing the PUAD4DH datasheet, PUAD4DH pinout, PUAD4DH application, or PUAD4DH equivalent, key selection criteria include its 200V VRRM, 130A IFSM, junction-to-case thermal resistance of 2.0°C/W, and ThinDPAK lead configuration optimized for automated SMT assembly and thermal management on aluminum heatsinks.
Technical Context
This device is a single-die planar silicon rectifier engineered for ultra-fast switching with low Qrr (42nC) and minimal trr (20–25ns), enabling reduced switching losses in hard-switched topologies. Its 175°C maximum junction temperature and JESD201 Class 2 whisker resistance support operation in under-hood automotive environments.
The ThinDPAK package provides low RθJC (2.0°C/W) when mounted on a 2" × 3" × 0.25" Al-plate heatsink, and its matte tin-plated leads meet J-STD-002 solderability requirements. Polarity is marked by a cathode band on the molded body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF | 4 A - Continuous average forward current rating at case temperature ≤ 115°C |
| IFSM | 130 A - Peak non-repetitive surge current (8.3ms half-sine) without damage |
| trr | 20–25 ns - Reverse recovery time determining minimum dead-time and switching loss in hard-switched converters |
| Qrr | 42 nC - Recovered charge during turn-off, directly impacting Esw and EMI generation |
| RθJC | 2.0 °C/W - Thermal resistance from junction to case, enabling direct heatsink mounting for high-power density designs |
| VF @ 4A/25°C | 0.85–0.92 V - Forward voltage drop defining conduction loss and thermal load at rated current |
Pinout & Package
Package: ThinDPAK (JEDEC TO-252 variation AE), 3-terminal surface-mount package with exposed drain pad (pin 2) for thermal and electrical connection. Cathode indicated by band on terminal 3 side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Input current entry point | Soldered to high-side switching node or input rail; carries full forward current |
| 2 (Drain Pad / Cathode Tie) | Common cathode connection & thermal path | Exposed copper pad electrically tied to cathode (pin 3); must be soldered to large copper area for thermal dissipation |
| 3 (Cathode) | Output current exit point | Connected to output rail or ground return; polarity marked by band adjacent to this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications per stress test requirements including HTGB, TCT, and HTRB |
| Ultra-fast trr (20–25 ns) | Enables >500 kHz switching in DC/DC converters while minimizing reverse recovery loss and voltage overshoot |
| Low Qrr (42 nC) | Reduces turn-off energy loss and associated EMI compared to standard fast recovery diodes |
| ThinDPAK with RθJC = 2.0°C/W | Supports compact, high-current designs with direct heatsink coupling-no thermal vias required for moderate loads |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling |
Applications
| Automotive DC/DC Converters | Industrial Snubber Circuits |
|---|---|
Use Scenario: 12V–48V bidirectional DC/DC converter in 48V mild-hybrid vehicle architecture. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side switch off-time. Use Value: 200V VRRM and 130A IFSM withstand transient overvoltage and load dump events; 25ns trr minimizes cross-conduction loss. | Use Scenario: RCD snubber network across IGBTs in motor drive inverters. IC Role / Device Role / Timing Role: Fast-recovery clamp diode that resets snubber capacitor before next switching cycle. Use Value: Low Qrr (42nC) and tight trr distribution reduce snubber power dissipation and improve timing predictability. |
| High-Frequency SMPS | On-Board Charger (OBC) Auxiliary Supplies |
Use Scenario: Secondary-side rectification in 300–500 kHz LLC resonant converter for server PSUs. IC Role / Device Role / Timing Role: Output rectifier managing high-frequency AC-to-DC conversion with minimal reverse recovery penalty. Use Value: 0.92V VF at 4A/25°C balances conduction loss and thermal rise; 77pF CJ limits capacitive coupling noise. | Use Scenario: Auxiliary 12V supply derived from main OBC HV bus for control logic and gate drivers. IC Role / Device Role / Timing Role: Input-stage rectifier feeding isolated flyback or buck converter. Use Value: AEC-Q101 qualification ensures reliability across automotive temperature range (−40°C to +125°C ambient); 175°C TJMAX supports derated operation under sustained load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06S | 600V VRRM, 4A IF, 35ns trr, TO-252 package, no AEC-Q101 qualification | Higher voltage margin but slower recovery; suited for industrial SMPS where automotive qualification is not required | Select when system requires >200V blocking but tolerates higher switching loss and lacks automotive compliance needs |
| VS-4EYH02-M3 | 200V VRRM, 4A IF, 25ns trr, AEC-Q101 qualified, same ThinDPAK package | Identical voltage/current/recovery specs and qualification; differs in thermal resistance (RθJC = 2.5°C/W vs. 2.0°C/W) | Acceptable functional alternative where 0.5°C/W higher junction-to-case resistance is acceptable in thermal design |
Compared with STTH4L06S and VS-4EYH02-M3, PUAD4DH offers the lowest RθJC (2.0°C/W) among AEC-Q101-qualified 200V/4A ultra-fast rectifiers in ThinDPAK, delivering superior thermal performance for space-constrained automotive power modules.
Availability
PUAD4DH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial snubber networks, and high-frequency SMPS requiring stable component supply with AEC-Q101 assurance and consistent thermal performance.
Supply support for PUAD4DH 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 devices, and MOSFETs for automotive and industrial markets.
The PUAD4DH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier product line, designed specifically for high-efficiency, high-reliability power conversion in automotive electrification systems such as 48V architectures and on-board chargers.
FAQ
What is the maximum junction temperature rating for PUAD4DH?
The PUAD4DH has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table in the official datasheet. This allows operation in under-hood automotive environments when thermally managed via the ThinDPAK exposed pad. Derating curves confirm usable current capacity down to −55°C ambient, making PUAD4DH suitable for wide-temperature-range power designs.
Is PUAD4DH pin-compatible with PUAD4BH?
Yes, PUAD4DH is pin-compatible with PUAD4BH - both share identical ThinDPAK package outline, terminal numbering, and mechanical footprint. The only difference is VRRM: PUAD4BH is rated for 100V, while PUAD4DH is rated for 200V. No PCB layout change is required when upgrading from PUAD4BH to PUAD4DH for higher-voltage robustness.
Does PUAD4DH require special handling for moisture sensitivity?
No, PUAD4DH is rated at Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking. This eliminates dry-pack requirements and simplifies SMT line integration - a key advantage over MSL-3 or MSL-5 discrete rectifiers.
What is the reverse recovery charge (Qrr) of PUAD4DH and why does it matter?
PUAD4DH specifies Qrr = 42 nC under standard test conditions (IF = 4.0A, di/dt = 200A/µs, VR = 100V). This value directly determines turn-off energy loss (Esw ≈ Qrr × Voff) and influences EMI generation. Lower Qrr enables higher switching frequencies and reduces heatsink requirements in DC/DC and snubber applications using PUAD4DH.
Can PUAD4DH be used in synchronous rectification topologies?
No, PUAD4DH is a unidirectional silicon PN-junction rectifier and cannot replace a MOSFET in synchronous rectification. It lacks gate control and body-diode optimization for low RDS(on) conduction. PUAD4DH is intended for asynchronous or freewheeling roles where controlled turn-on is unnecessary - e.g., in buck converter catch diodes or snubbers where its 25ns trr and low Qrr deliver optimal trade-offs.
PUAD4DH 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):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 200 V
- Capacitance @ Vr, F:
- 77pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ThinDPAK
- Operating Temperature - Junction:
- -55°C ~ 175°C
PUAD4DH FAQ
1.How can I place an order for PUAD4DH through Aetrix?
Please submit a Request for Quotation (RFQ) for PUAD4DH 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 PUAD4DH reliable?
The price and inventory of PUAD4DH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PUAD4DH is usually 5 days.
3.What payment methods are accepted for PUAD4DH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PUAD4DH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PUAD4DH?
PUAD4DH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PUAD4DH 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 PUAD4DH?
For technical support, including PUAD4DH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PUAD4DH requirements.
6.How does Aetrix verify that PUAD4DH is sourced from the original manufacturer or authorized distributors?
All PUAD4DH 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 PUAD4DH meets industry standards.
7.What is the process for return or replacement of PUAD4DH?
All PUAD4DH units undergo pre-shipment inspection (PSI). If there is an issue with PUAD4DH, 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 PUAD4DH part is unused and in its original packaging.
Return procedure for PUAD4DH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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