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Taiwan Semiconductor Corporation PU1DA
- Part No.:
- PU1DA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
PU1DA.pdf
- Description:
- 25NS, 1A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
PU1DA from Taiwan Semiconductor is a 1A, 200V ultra-fast surface-mount rectifier in DO-214AC (SMA) package, featuring 25 ns reverse recovery time, 0.84 V forward voltage at 1.0 A/25°C, and 45 A surge current capability. It serves as a high-efficiency output rectifier in DC/DC converters and snubber circuits for switching power supplies.
For engineers reviewing the PU1DA datasheet, PU1DA pinout, PU1DA application, or PU1DA equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, ultra-fast trr ≤25 ns, low VF at elevated temperature, thermal resistance RθJL = 20 °C/W, and RoHS/halogen-free compliance for industrial and automotive-grade power conversion designs.
Technical Context
This single-die silicon planar rectifier delivers ultra-fast switching performance with reverse recovery time trr of 25 ns under IF = 0.5 A / IR = 1.0 A / Irr = 0.25 A conditions and 34 ns under IF = 1.0 A / di/dt = 50 A/µs / VR = 30 V. Its junction-to-lead thermal resistance of 20 °C/W supports reliable operation at TJ up to +175°C.
The device exhibits low forward voltage (VF = 0.70 V typ. at 1.0 A / 125°C), low leakage (IR ≤10 µA at 125°C), and low junction capacitance (CJ = 19 pF at 1 MHz / 4 V), enabling high-frequency efficiency in flyback, forward, and active clamp topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage range in DC/DC and snubber applications |
| IF | 1 A continuous - Rated average forward current; determines steady-state power handling on standard PCB copper pads |
| trr | 25 ns - Measured reverse recovery time at IF = 0.5 A; enables >1 MHz switching without excessive switching loss |
| VF @ 1A/25°C | 0.84 V max - Forward voltage drop directly impacts conduction loss and thermal design in high-duty-cycle operation |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB copper for compact heatsinking |
| IR @ 125°C | 10 µA max - High-temperature reverse leakage; critical for low-power standby and high-temperature reliability |
| CJ | 19 pF - Junction capacitance at 1 MHz / 4 V; affects high-frequency EMI and ringing in fast-switching nodes |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode-indicating band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Forward current exit point | Connected to output rail or snubber capacitor; polarity marked by visible band on case |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | trr ≤25 ns ensures minimal switching loss and reduced EMI in >500 kHz SMPS designs |
| High-temperature operation | TJ max = +175°C enables use in sealed enclosures or high-ambient environments without derating |
| Low forward voltage | VF = 0.70 V typ. at 1.0 A / 125°C reduces conduction loss and improves full-load efficiency |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS; suitable for green manufacturing and export compliance |
| Automated placement ready | DO-214AC outline and moisture sensitivity level 1 support high-yield SMT assembly without baking |
Applications
| DC/DC Converter Output Rectification | Snubber Circuit Clamp Diode |
|---|---|
Use Scenario: Primary-side synchronous rectification replacement in isolated 12–48 V output DC/DC modules operating at 300–1000 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve conducting during transformer reset phase; timing defined by MOSFET gate drive edges. Use Value: 25 ns trr minimizes overlap loss with control FETs; 0.84 V VF reduces conduction loss versus standard FRDs. | Use Scenario: RCD snubber across primary-side MOSFET in flyback or forward converters handling 200 V bus. IC Role / Device Role / Timing Role: Fast clamp diode conducting only during MOSFET turn-off transient; timing governed by dv/dt and snubber RC time constant. Use Value: 200 V VRRM withstands reflected spikes; low CJ (19 pF) avoids parasitic resonance with snubber capacitor. |
| High-Frequency Switching Power Supply | Industrial AC-DC Adapter Secondary Rectifier |
Use Scenario: Output rectifier in compact 65 W USB PD adapter using GaN HEMT primary-side switching at 600 kHz. IC Role / Device Role / Timing Role: Secondary-side unidirectional conduction element; commutates synchronously with primary-side switching frequency. Use Value: RθJL = 20 °C/W allows direct thermal coupling to PCB ground plane, eliminating need for external heatsink. | Use Scenario: Secondary-side rectification in 24 V/2 A industrial AC-DC adapter operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Continuous forward conduction during transformer secondary half-cycle; duty cycle determined by transformer turns ratio. Use Value: IR ≤10 µA at 125°C prevents excessive standby leakage; 175°C TJ rating supports long-term reliability under 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 |
|---|---|---|---|
| STTH1R02U (STMicroelectronics) | Same 1 A / 200 V rating; trr = 22 ns; VF = 0.85 V max @ 1 A / 25°C; DO-214AC package | Identical footprint and electrical envelope; slightly faster trr but higher VF at room temp | Select when prioritizing minimum switching loss over conduction loss at moderate temperatures |
| ES1D (ON Semiconductor) | 1 A / 200 V; trr = 35 ns; VF = 0.95 V max @ 1 A / 25°C; same DO-214AC package | Slower recovery and higher VF increase losses in >500 kHz designs; lower cost for less demanding applications | Select for cost-sensitive 100–300 kHz industrial supplies where trr margin is acceptable |
Compared with STTH1R02U and ES1D, the PU1DA offers the best balance of ultra-fast recovery (25 ns), low VF at high temperature (0.70 V @ 125°C), and proven thermal performance (RθJL = 20 °C/W), making it optimal for thermally constrained, high-frequency DC/DC converters.
Availability
PU1DA is available at Aetrix Electronics and suitable for DC/DC converter design, snubber circuit implementation, and high-frequency switching power supply development requiring stable component supply and long-term industrial availability.
Supply support for PU1DA 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 industrial and computing markets.
The PU1DA belongs to TSC's PU1x series of ultra-fast rectifiers designed specifically for high-efficiency, high-frequency switching power conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum junction temperature rating for PU1DA?
The PU1DA has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table. This allows sustained operation in high-ambient environments such as enclosed industrial power supplies or automotive under-hood auxiliary converters. The PU1DA maintains specified electrical performance up to this limit when thermal design respects RθJL = 20 °C/W and RθJA = 76 °C/W on standard test board conditions.
Does PU1DA have a halogen-free and RoHS-compliant construction?
Yes, the PU1DA is halogen-free per IEC 61249-2-21 and RoHS compliant, as confirmed in the official Taiwan Semiconductor datasheet revision A2210. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002. These attributes make PU1DA suitable for environmentally regulated markets including EU, Japan, and North America.
What is the reverse recovery time (trr) specification for PU1DA under standard test conditions?
The PU1DA reverse recovery time is specified as ≤25 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions, and 34 ns under IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V. These values are measured per JEDEC standards and reflect the device's ultra-fast switching capability essential for minimizing switching losses in high-frequency DC/DC converters.
Can PU1DA be used as a direct replacement for PU1BA in existing designs?
No - PU1DA and PU1BA differ in rated VRRM (200 V vs. 100 V) and associated parameters including VR(RMS) (140 V vs. 70 V). While both share identical DO-214AC package, pinout, and thermal characteristics, substituting PU1DA for PU1BA requires verification that system-level reverse voltage stress remains within PU1BA's 100 V limit. The PU1DA is not a drop-in replacement for PU1BA without circuit review.
What is the typical forward voltage of PU1DA at 1.0 A and 125°C?
The typical forward voltage of PU1DA at 1.0 A and 125°C is 0.70 V, with no maximum specified in the datasheet. This value is significantly lower than its 25°C VF (0.84 V max), demonstrating positive temperature coefficient behavior beneficial for current sharing and thermal stability. Designers should use 0.70 V typ. for efficiency calculations in high-temperature operating conditions.
PU1DA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 930 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 200 V
- Capacitance @ Vr, F:
- 19pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU1DA FAQ
1.How can I place an order for PU1DA through Aetrix?
Please submit a Request for Quotation (RFQ) for PU1DA 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 PU1DA reliable?
The price and inventory of PU1DA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU1DA is usually 5 days.
3.What payment methods are accepted for PU1DA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU1DA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU1DA?
PU1DA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU1DA 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 PU1DA?
For technical support, including PU1DA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU1DA requirements.
6.How does Aetrix verify that PU1DA is sourced from the original manufacturer or authorized distributors?
All PU1DA 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 PU1DA meets industry standards.
7.What is the process for return or replacement of PU1DA?
All PU1DA units undergo pre-shipment inspection (PSI). If there is an issue with PU1DA, 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 PU1DA part is unused and in its original packaging.
Return procedure for PU1DA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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