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Taiwan Semiconductor Corporation PU4DC
- Part No.:
- PU4DC
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
PU4DC.pdf
- Description:
- 25NS, 4A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
PU4DC from Taiwan Semiconductor is a 200V, 4A ultra-fast surface-mount rectifier in DO-214AB (SMC) package, featuring 24 ns reverse recovery time, 0.84 V forward voltage at 4A/25°C, and 130 A surge current capability-designed for high-frequency DC/DC converters and snubber circuits.
For engineers reviewing the PU4DC datasheet, PU4DC pinout, PU4DC application, or PU4DC equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, ultra-fast trr ≤25 ns, thermal resistance RθJL = 13 °C/W, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This single-die silicon rectifier uses planar technology to achieve low conduction loss and fast switching performance. Its 24 ns reverse recovery time and 57 nC reverse recovery charge support operation in high-frequency (>100 kHz) power topologies where diode switching losses must be minimized.
The device operates across –55°C to +175°C junction temperature range and is rated for 130 A non-repetitive surge current (8.3 ms sine wave). Thermal design is supported by verified RθJL = 13 °C/W and RθJA = 57 °C/W on a 16 mm × 16 mm Cu pad test board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse blocking voltage; defines safe operating limit in DC/DC flyback or snubber clamp circuits |
| IF | 4 A continuous - average forward current rating at TL = 75°C; determines steady-state power handling in output rectification |
| trr | 24 ns - measured at IF = 4.0 A, dI/dt = 200 A/µs, VR = 100 V; enables efficient operation above 200 kHz switching frequencies |
| VF | 0.84 V @ 4 A, 25°C - forward voltage drop directly impacts conduction loss and thermal rise in high-current paths |
| IFSM | 130 A @ 8.3 ms - surge rating supports inrush and transient overload conditions without failure |
| RθJL | 13 °C/W - junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper for passive cooling |
| CJ | 78 pF @ 1 MHz, 4 V - junction capacitance affects high-frequency noise and EMI in fast-switching nodes |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in flyback secondary or snubber return) |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail or clamp capacitor; marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | trr = 24 ns enables minimal switching loss in >200 kHz SMPS designs |
| Low forward voltage | VF = 0.84 V @ 4 A reduces conduction loss and improves efficiency in high-current outputs |
| High surge robustness | IFSM = 130 A supports reliable operation during startup and fault transients |
| Automated placement ready | DO-214AB (SMC) footprint and J-STD-020 Level 1 moisture sensitivity allow standard SMT line integration |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally regulated applications |
Applications
| DC/DC Converter Output Rectification | Snubber Circuit Clamp Diode |
|---|---|
Use Scenario: Used as secondary-side rectifier in isolated 12 V/5 V DC/DC converters operating at 250 kHz. IC Role / Device Role / Timing Role: Unidirectional current path with fast turn-off to minimize reverse recovery loss during MOSFET switching transitions. Use Value: 24 ns trr and 0.84 V VF reduce total power loss by ~18% vs. standard fast recovery diodes in same layout. | Use Scenario: Placed across switching FET or transformer winding to absorb inductive energy spikes. IC Role / Device Role / Timing Role: Fast clamping element that conducts only during voltage overshoot, then blocks rapidly to prevent shoot-through. Use Value: 200 V VRRM and 130 A IFSM ensure reliable suppression of 150 V transients with <100 ns response. |
| High-Frequency Inverter Auxiliary Supply | Industrial Motor Drive Brake Circuit |
Use Scenario: Supplies auxiliary bias rail for gate drivers in 10–50 kW three-phase inverters. IC Role / Device Role / Timing Role: Input rectifier feeding bulk capacitor in compact off-line auxiliary supply running at 300 kHz. Use Value: Low CJ (78 pF) minimizes capacitive coupling noise into sensitive control circuitry. | Use Scenario: Integrated into dynamic braking module to dissipate regenerative energy into resistor bank. IC Role / Device Role / Timing Role: Bidirectional energy transfer enabler-conducts during braking pulse, blocks during normal operation. Use Value: 175°C max junction temperature and RθJL = 13 °C/W support sustained 4 A braking current without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R02DJF | 200 V, 4 A, trr = 22 ns, VF = 0.89 V @ 4 A, DO-214AB | Slightly higher VF increases conduction loss; tighter trr tolerance suits critical timing-critical snubbers | Prefer when sub-22 ns trr is required and 0.05 V higher VF is acceptable |
| ES4D-E3/57T | 200 V, 4 A, trr = 35 ns, VF = 0.82 V @ 4 A, DO-214AB | Slower recovery but lowest VF; higher Qrr may increase EMI in high-dI/dt environments | Prefer when conduction efficiency dominates over switching loss, e.g., <100 kHz operation |
Compared with STTH4R02DJF and ES4D-E3/57T, PU4DC delivers balanced performance: lower VF than STTH4R02DJF and faster trr than ES4D-E3/57T-making it optimal for 150–300 kHz industrial DC/DC and snubber use cases where both loss components matter.
Availability
PU4DC is available at Aetrix Electronics and suitable for DC/DC converter output rectification, snubber circuit clamp diodes, high-frequency inverter auxiliary supplies, and industrial motor drive brake circuits requiring stable component supply and full traceability.
Supply support for PU4DC 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 industrial, computing, and consumer markets since 1979.
The PU4DC belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion systems where low recovery charge and tight thermal resistance are critical.
FAQ
What is the maximum repetitive peak reverse voltage rating for PU4DC?
The PU4DC has a maximum repetitive peak reverse voltage (VRRM) of 200 V, verified per absolute maximum ratings table in the official TSC datasheet revision A2210. This rating applies under continuous operation at TA = 25°C and defines the highest reverse-biased voltage the device can block without breakdown. Exceeding this value risks irreversible avalanche failure.
Does PU4DC have a specified reverse recovery time, and under what test conditions?
Yes, PU4DC has a typical reverse recovery time (trr) of 24 ns, measured under conditions of IF = 4.0 A, dI/dt = 200 A/µs, and VR = 100 V, as documented in the Electrical Specifications section of the TSC datasheet. A second condition (IF = 1.0 A, dI/dt = 50 A/µs, VR = 30 V) yields 31 ns, confirming consistent ultra-fast behavior across operating ranges.
What is the forward voltage drop of PU4DC at rated current and room temperature?
The forward voltage (VF) of PU4DC is 0.84 V at IF = 4 A and TJ = 25°C, with a maximum of 0.93 V under the same conditions. This value is measured using pulse testing (PW = 0.3 ms) and directly impacts conduction loss in high-current power paths such as DC/DC output stages.
Is PU4DC compatible with lead-free reflow soldering processes?
Yes, PU4DC features matte tin-plated leads compliant with J-STD-002 for solderability and is qualified for lead-free reflow profiles per J-STD-020 Level 1 moisture sensitivity. Its DO-214AB (SMC) package withstands peak temperatures up to 260°C, making it fully compatible with standard Pb-free assembly lines.
What thermal resistance values are specified for PU4DC, and how are they measured?
PU4DC specifies RθJL = 13 °C/W (junction-to-lead), RθJC = 14 °C/W (junction-to-case), and RθJA = 57 °C/W (junction-to-ambient), all measured on a standardized 16 mm × 16 mm copper pad PCB per JEDEC test board guidelines. These values enable accurate thermal modeling for heatsinkless or low-profile industrial power designs.
PU4DC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- 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:
- 930 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:
- 78pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU4DC FAQ
1.How can I place an order for PU4DC through Aetrix?
Please submit a Request for Quotation (RFQ) for PU4DC 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 PU4DC reliable?
The price and inventory of PU4DC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU4DC is usually 5 days.
3.What payment methods are accepted for PU4DC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU4DC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU4DC?
PU4DC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU4DC 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 PU4DC?
For technical support, including PU4DC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU4DC requirements.
6.How does Aetrix verify that PU4DC is sourced from the original manufacturer or authorized distributors?
All PU4DC 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 PU4DC meets industry standards.
7.What is the process for return or replacement of PU4DC?
All PU4DC units undergo pre-shipment inspection (PSI). If there is an issue with PU4DC, 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 PU4DC part is unused and in its original packaging.
Return procedure for PU4DC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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