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Taiwan Semiconductor Corporation PU1DFS
- Part No.:
- PU1DFS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
PU1DFS.pdf
- Description:
- 25NS, 1A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
PU1DFS from Taiwan Semiconductor is a 1 A, 200 V ultra-fast surface-mount rectifier in SOD-128 package, featuring 25 ns reverse recovery time, 0.84 V forward voltage at 1.0 A/25°C, and 175°C maximum junction temperature-designed for high-frequency switching in DC/DC converters and snubber circuits.
For engineers reviewing the PU1DFS datasheet, PU1DFS pinout, PU1DFS application, or PU1DFS equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, low 0.93 V max VF at 1.0 A, 45 A surge current rating, thermal resistance of 17°C/W (junction-to-lead), and SOD-128 mechanical compatibility with automated placement.
Technical Context
This device uses planar silicon technology to achieve ultra-fast recovery with trr ≤ 25 ns under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A conditions and Qrr = 27 nC-enabling reduced switching losses in high-frequency topologies. Its single-die configuration and cathode-band polarity marking support unambiguous PCB orientation.
The SOD-128 package delivers RθJL = 17°C/W and RθJA = 75°C/W on a 5 mm × 5 mm Cu pad, enabling reliable operation up to TJ = 175°C. Moisture sensitivity level is J-STD-020 Level 1, and terminals are matte tin-plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports input rails up to 200 V DC or peak AC without breakdown |
| IF | 1 A continuous - suitable for low-to-medium power rectification in compact converters |
| trr | 25 ns - enables efficient operation above 100 kHz switching frequencies |
| VF @ 1A/25°C | 0.84 V typical - reduces conduction loss and thermal stress vs. standard fast rectifiers |
| IFSM | 45 A @ 8.3 ms - withstands transient surges common in inductive load switching |
| RθJL | 17 °C/W - allows direct thermal coupling to PCB copper for passive cooling |
| TJ max | 175 °C - extends operational margin in thermally constrained environments |
Pinout & Package
SOD-128 surface-mount package with molded UL 94V-0 compound, matte tin-plated leads, and cathode band indicating terminal polarity. Weight: 0.027 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., switch node or ground return) |
| Cathode | Current exit point during forward conduction; marked by band | Connected to higher-potential output rail or snubber capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery (trr ≤ 25 ns) | Minimizes reverse recovery loss and EMI in hard-switched SMPS |
| Low VF (0.84 V typ @ 1 A) | Reduces power dissipation by ~15% vs. comparable 1 A fast rectifiers with VF > 0.95 V |
| SOD-128 footprint | Enables high-density layout and compatibility with standard pick-and-place equipment |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirements before reflow, reducing manufacturing overhead |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for industrial shipments |
Applications
| AC-DC Adapter Secondary Rectification | DC/DC Converter Output Stage |
|---|---|
Use Scenario: Rectifying 12–24 V secondary outputs in compact wall adapters with <500 kHz switching. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency transformer output to regulated DC. Use Value: 25 ns trr prevents cross-conduction loss during synchronous rectifier dead-time gaps. | Use Scenario: Output rectification in isolated flyback or forward converters powering FPGA or microcontroller rails. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductor energy and shaping output ripple. Use Value: 0.84 V VF at 1 A lowers average conduction loss to <0.84 W, easing thermal design. |
| Snubber Network Clamp Diode | High-Frequency Inverter Auxiliary Rectification |
Use Scenario: Absorbing voltage spikes across MOSFETs in motor drive half-bridges operating at 20–100 kHz. IC Role / Device Role / Timing Role: Fast-turn-on clamp limiting dv/dt-induced ringing during turn-off transitions. Use Value: 200 V VRRM withstands reflected transients; 25 ns trr ensures rapid recombination before next switching edge. | Use Scenario: Auxiliary bias supply rectification in solar microinverters using interleaved topology. IC Role / Device Role / Timing Role: High-efficiency AC-side rectifier feeding isolated gate driver supplies. Use Value: SOD-128 package fits tight spacing between power stages; 175°C TJ rating supports ambient >85°C enclosure operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02UF | 1 A, 200 V, trr = 30 ns, VF = 0.95 V @ 1 A, DO-214AC package | Larger footprint; higher VF increases conduction loss by ~0.11 W at 1 A | Prefer PU1DFS where board space or thermal budget is constrained |
| ES1D | 1 A, 200 V, trr = 35 ns, VF = 0.92 V @ 1 A, SMA package | SMA has higher RθJA (~100°C/W); less effective heat spreading than SOD-128 | PU1DFS offers superior thermal performance and lower trr for >100 kHz designs |
Compared with STTH1R02UF and ES1D, PU1DFS delivers the lowest combination of trr (25 ns) and RθJL (17°C/W) in SOD-128, making it optimal for thermally dense, high-frequency rectification where layout area and junction temperature rise must be minimized.
Availability
PU1DFS is available at Aetrix Electronics and suitable for DC/DC converters, snubber networks, and high-frequency switching power supplies requiring stable component supply and consistent parametric performance across production lots.
Supply support for PU1DFS 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 industrial, computing, and consumer markets since 1979.
The PU1DFS belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion where low trr, low VF, and robust thermal performance are critical in space-constrained SMT designs.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for PU1DFS?
The PU1DFS has a VRRM rating of 200 V, verified per Taiwan Semiconductor's A2210 datasheet revision. This value defines the maximum instantaneous reverse voltage the device can block repeatedly without breakdown. It is tested under standard conditions (TA = 25°C) and applies across the full operating junction temperature range (–55°C to +175°C). Designers must ensure system-level transient voltages remain below this limit with appropriate derating margins.
What is the forward voltage (VF) of PU1DFS at 1.0 A and 25°C?
The PU1DFS exhibits a typical forward voltage of 0.84 V at 1.0 A and 25°C, with a maximum of 0.93 V under the same conditions. This value is measured using pulse testing (PW = 0.3 ms) to avoid self-heating effects. At elevated temperatures (e.g., 125°C), VF drops to 0.70 V typical, improving conduction efficiency in thermally demanding applications.
Does PU1DFS have a defined reverse recovery time (trr), and what test conditions apply?
Yes, PU1DFS has a specified reverse recovery time of ≤25 ns. This value is measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. An alternate condition-IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V-yields trr ≤34 ns. Both values confirm its classification as an ultra-fast rectifier suitable for switching frequencies beyond 100 kHz.
What package type does PU1DFS use, and what are its key mechanical attributes?
PU1DFS uses the SOD-128 surface-mount package. Key attributes include UL 94V-0 compliant molding compound, matte tin-plated leads solderable per J-STD-002, J-STD-020 Level 1 moisture sensitivity, cathode band polarity marking, and a mass of approximately 0.027 g. The recommended pad layout and outline dimensions are documented in Taiwan Semiconductor's A2210 datasheet.
Is PU1DFS RoHS and halogen-free compliant?
Yes, PU1DFS is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements are explicitly confirmed in the "FEATURES" section of the official Taiwan Semiconductor datasheet (Version A2210). No brominated flame retardants or chlorine-based compounds are used in the molding compound or plating process.
PU1DFS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- 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:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU1DFS FAQ
1.How can I place an order for PU1DFS through Aetrix?
Please submit a Request for Quotation (RFQ) for PU1DFS 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 PU1DFS reliable?
The price and inventory of PU1DFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU1DFS is usually 5 days.
3.What payment methods are accepted for PU1DFS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU1DFS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU1DFS?
PU1DFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU1DFS 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 PU1DFS?
For technical support, including PU1DFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU1DFS requirements.
6.How does Aetrix verify that PU1DFS is sourced from the original manufacturer or authorized distributors?
All PU1DFS 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 PU1DFS meets industry standards.
7.What is the process for return or replacement of PU1DFS?
All PU1DFS units undergo pre-shipment inspection (PSI). If there is an issue with PU1DFS, 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 PU1DFS part is unused and in its original packaging.
Return procedure for PU1DFS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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