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Taiwan Semiconductor Corporation PU2DB
- Part No.:
- PU2DB
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
PU2DB.pdf
- Description:
- 25NS, 2A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
PU2DB from Taiwan Semiconductor is a 2 A, 200 V ultra-fast surface-mount rectifier in DO-214AA (SMB) package, featuring 25 ns reverse recovery time, 0.93 V max forward voltage at 2 A/25°C, and 175°C maximum junction temperature. It serves as a primary output rectifier in high-frequency DC/DC converters requiring low conduction loss and fast switching.
For engineers reviewing the PU2DB datasheet, PU2DB pinout, PU2DB application, or PU2DB equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 50 A surge current rating, ultra-fast trr ≤25 ns, thermal resistance RθJL = 16 °C/W, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This device uses planar silicon technology to achieve stable ultra-fast switching performance across -55°C to +175°C operating range. Its single-die configuration and DO-214AA package support high-power-density layouts with minimal parasitic inductance.
The rectifier delivers 0.73 V typical forward voltage at 2 A and 125°C, enabling efficient operation in thermally constrained environments. Reverse recovery charge Qrr is specified at 31 nC, supporting snubberless designs in resonant topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or LLC secondary-side rectification |
| IF | 2 A continuous - Rated average forward current; supports sustained power delivery in compact 10 mm × 10 mm PCB copper pad layouts |
| trr | ≤25 ns - Ultra-fast reverse recovery time; reduces switching losses and EMI in >100 kHz DC/DC converters |
| VF @ 2A, 25°C | ≤0.93 V - Low conduction loss; improves efficiency and thermal margin versus standard FR diodes |
| RθJL | 16 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB copper for passive cooling |
| Qrr | 31 nC - Low reverse recovery charge; minimizes turn-off spike and gate drive stress in synchronous rectifier-assisted designs |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode-indicating band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or ground return) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or positive bus; withstands 200 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery (trr ≤25 ns) | Enables operation in high-frequency SMPS (>300 kHz) without excessive switching loss or ringing |
| Low VF (0.93 V max @ 2A/25°C) | Reduces I²R conduction loss by ~15% vs. legacy FR107-class diodes at same current |
| RθJL = 16 °C/W | Supports 2 A continuous operation on minimal 10 mm × 10 mm Cu pad without forced air or heatsink |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard J-STD-020 assembly flow |
Applications
| High-Frequency DC/DC Converter | Snubber Circuit |
|---|---|
Use Scenario: Secondary-side rectification in 200–500 kHz isolated buck-derived topologies (e.g., active-clamp forward, LLC resonant). IC Role / Device Role / Timing Role: Unidirectional current switch converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 25 ns trr and 31 nC Qrr suppress voltage overshoot and reduce MOSFET turn-off stress during hard commutation. | Use Scenario: Voltage clamping network across switching FETs or transformers in flyback and forward converters. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing leakage inductance energy during switch turn-off. Use Value: 200 V VRRM and 50 A IFSM tolerate transient spikes while maintaining low capacitance (33 pF) to avoid resonance detuning. |
| AC-DC Adapter Output Stage | Industrial Power Supply Input Rectification |
Use Scenario: Output rectification in universal-input 12 V/2 A wall adapters with tight size constraints. IC Role / Device Role / Timing Role: Main output rectifier delivering regulated low-voltage DC after high-frequency transformer isolation. Use Value: DO-214AA footprint and 0.087 g weight enable high-density layout; 175°C TJMAX ensures reliability under sustained load. | Use Scenario: Primary-side bridge rectification in 24–48 V industrial PSUs where input line transients exceed 150 V. IC Role / Device Role / Timing Role: High-voltage, high-surge-capable discrete rectifier handling 230 VAC full-wave input with safety margin. Use Value: 200 V VRRM provides 30% headroom above 150 V peak line voltage; 140 A surge rating (1 ms) handles cold-start inrush. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R02 | Same 2 A / 200 V rating; trr = 35 ns (vs. PU2DB's 25 ns); higher VF (1.05 V max @ 2A) | Suitable for lower-frequency (<150 kHz) designs where tighter trr is not critical | Select when prioritizing STMicroelectronics supply chain over ultra-fast timing performance |
| ES2D | 2 A / 200 V; trr = 35 ns; RθJA = 80 °C/W (vs. PU2DB's 73 °C/W); same DO-214AA package | Acceptable for moderate thermal loads but less margin in high-ambient or high-duty-cycle use | Choose for cost-sensitive volume production where 10 ns slower recovery is acceptable |
Compared with STTH2R02 and ES2D, PU2DB offers the lowest reverse recovery time (25 ns) and best thermal resistance (RθJL = 16 °C/W), making it optimal for high-efficiency, high-frequency DC/DC stages where switching loss and thermal density are critical.
Availability
PU2DB is available at Aetrix Electronics and suitable for high-frequency DC/DC converters, snubber networks, AC-DC adapter output stages, and industrial power supply input rectification requiring stable component supply and consistent parametric performance.
Supply support for PU2DB 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 power management and industrial markets since 1979.
The PU2DB belongs to TSC's PU2x series of ultra-fast rectifiers designed specifically for high-efficiency, high-frequency switching power supplies where low Qrr, tight VF distribution, and robust surge capability are essential.
FAQ
What is the maximum junction temperature rating for PU2DB?
The PU2DB has a maximum junction temperature (TJMAX) of +175°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet Version A2210. This allows reliable operation in high-ambient industrial environments and enables derating curves up to 175°C for continuous 2 A forward current on standard 10 mm × 10 mm PCB copper pads. The PU2DB maintains stable electrical parameters across this full range.
Does PU2DB have a RoHS-compliant and halogen-free construction?
Yes, PU2DB is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated to meet J-STD-002 solderability requirements. These attributes make PU2DB suitable for environmentally regulated consumer and industrial end equipment.
What is the reverse recovery time (trr) specification for PU2DB?
The PU2DB reverse recovery time is specified as ≤25 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the ELECTRICAL SPECIFICATIONS table. An alternate condition (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V) yields 30 ns typical. This ultra-fast trr is a defining characteristic of the PU2DB and directly supports high-frequency switching efficiency.
Is PU2DB pin-compatible with other DO-214AA rectifiers like PU2BB or STTH2R02?
PU2DB shares the DO-214AA (SMB) package and anode/cathode terminal configuration with PU2BB and STTH2R02, but it is not a drop-in replacement for PU2BB due to its higher 200 V VRRM rating and distinct marking code. While mechanical mounting is identical, circuit-level validation is required for substitution-especially regarding reverse voltage margin and thermal performance under load. The PU2DB must be used where 200 V blocking is explicitly needed.
What is the junction-to-lead thermal resistance (RθJL) of PU2DB?
The PU2DB has a typical junction-to-lead thermal resistance (RθJL) of 16 °C/W, measured with the device mounted on a 10 mm × 10 mm copper pad PCB per JEDEC standards. This value is critical for estimating die temperature rise under conduction loss and confirms PU2DB's suitability for thermally demanding applications without additional heatsinking. The PU2DB achieves this via optimized die attach and leadframe design.
PU2DB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 930 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 200 V
- Capacitance @ Vr, F:
- 33pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU2DB FAQ
1.How can I place an order for PU2DB through Aetrix?
Please submit a Request for Quotation (RFQ) for PU2DB 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 PU2DB reliable?
The price and inventory of PU2DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2DB is usually 5 days.
3.What payment methods are accepted for PU2DB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2DB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU2DB?
PU2DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU2DB 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 PU2DB?
For technical support, including PU2DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2DB requirements.
6.How does Aetrix verify that PU2DB is sourced from the original manufacturer or authorized distributors?
All PU2DB 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 PU2DB meets industry standards.
7.What is the process for return or replacement of PU2DB?
All PU2DB units undergo pre-shipment inspection (PSI). If there is an issue with PU2DB, 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 PU2DB part is unused and in its original packaging.
Return procedure for PU2DB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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