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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation PU3DFS

Name: PU3DFS
Brand: Taiwan Semiconductor Corporation
SKU: PU3DFS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU3DFS

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-128

Datasheet:: PU3DFS.pdf

Description:: 25NS, 3A, 200V, ULTRA FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:27,800

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Product details

Overview

PU3DFS from Taiwan Semiconductor is a 200V, 3A ultra-fast surface-mount rectifier diode in SOD-128 package, designed for high-frequency switching and snubber circuits with 25 ns reverse recovery time, 0.93 V max forward voltage at 3 A/25°C, and 175°C maximum junction temperature.

For engineers reviewing the PU3DFS datasheet, PU3DFS pinout, PU3DFS application, or PU3DFS equivalent, key selection criteria include repetitive peak reverse voltage (200 V), surge current capability (85 A), thermal resistance (R_θJL = 14 °C/W), and ultra-fast recovery performance in compact SOD-128 packaging.

Technical Context

This single-die planar silicon rectifier delivers ultra-fast switching with trr ≤ 25 ns under IF = 0.5 A / IR = 1.0 A / Irr = 0.25 A conditions and Qrr = 51 nC, enabling efficient operation in DC/DC converters and snubber networks where low stored charge and rapid turn-off are critical.

Rated for TJ = –55°C to +175°C, it features matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1 per J-STD-020, and UL 94V-0 molding compound - supporting automated placement and high-reliability industrial power designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - maximum repetitive reverse blocking voltage without breakdown
I_F	3 A - continuous average forward current rating on standard PCB pad
I_FSM	85 A - non-repetitive surge current (8.3 ms half-sine) for transient overload handling
t_rr	25 ns - reverse recovery time defining switching speed and commutation loss
R_θJL	14 °C/W - junction-to-lead thermal resistance enabling direct thermal path to PCB copper
V_F @ 3 A, 25°C	0.93 V max - forward voltage drop determining conduction loss at full rated current
Q_rr	51 nC - reverse recovery charge directly impacting switching losses in hard-switched topologies

Pinout & Package

Package: SOD-128 - surface-mount, flat lead, single-anode/single-cathode configuration with cathode band marking; dimensions per Taiwan Semiconductor outline drawing; weight ≈ 0.028 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of rectification path; accepts up to 3 A continuous forward current
Cathode	Forward current exit point / reverse blocking terminal	Marked by band; withstands up to 200 V reverse bias; carries full load current during conduction

Key Features

Feature	Design Value
Ultra-fast recovery	t_rr ≤ 25 ns enables high-frequency operation (>100 kHz) with minimal switching loss
Low forward voltage	V_F = 0.86 V typ @ 3 A/25°C reduces conduction loss and thermal stress
High surge robustness	I_FSM = 85 A supports inrush and fault-current transients without failure
Thermally optimized package	R_θJL = 14 °C/W allows effective heat transfer to PCB copper pad
Automated assembly ready	Moisture sensitivity level 1 and J-STD-002 solderable leads ensure reliable reflow yield

Applications

AC-DC Adapter Secondary Rectification	DC/DC Converter Output Rectification
Use Scenario: Secondary-side rectification in offline flyback or forward converters operating at 65–130 kHz. IC Role / Device Role / Timing Role: Power diode conducting output current during switch off-time; blocks reverse voltage during switch on-time. Use Value: 25 ns t_rr minimizes reverse recovery loss; 200 V V_RRM accommodates reflected voltage spikes in universal-input designs.	Use Scenario: Synchronous or asynchronous rectification in isolated/isolated DC/DC modules for telecom or server power supplies. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated output; handles 3 A continuous load with low V_F to maintain efficiency. Use Value: 0.93 V max V_F at 3 A reduces conduction loss; R_θJL = 14 °C/W supports thermal management on dense PCB layouts.
Snubber Network Clamp Diode	High-Frequency Inverter Freewheeling
Use Scenario: Clamp diode in RCD snubber across MOSFETs/IGBTs in SMPS or motor drives. IC Role / Device Role / Timing Role: Fast turn-on to absorb inductive energy spike; fast turn-off to minimize tail current during reset. Use Value: 51 nC Q_rr and 25 ns t_rr limit snubber dissipation; 200 V rating covers typical clamp voltages in 100–200 V bus systems.	Use Scenario: Freewheeling path for inductive loads in high-frequency inverters (e.g., ultrasonic drivers, induction heating). IC Role / Device Role / Timing Role: Provides low-loss return path during switching transitions; must recover before next voltage reversal. Use Value: Ultra-fast recovery ensures clean commutation at >100 kHz; 175°C T_JMAX supports sustained operation under high ambient conditions.

AC-DC Adapter Secondary Rectification

DC/DC Converter Output Rectification

Use Scenario: Secondary-side rectification in offline flyback or forward converters operating at 65–130 kHz.

IC Role / Device Role / Timing Role: Power diode conducting output current during switch off-time; blocks reverse voltage during switch on-time.

Use Value: 25 ns t_rr minimizes reverse recovery loss; 200 V V_RRM accommodates reflected voltage spikes in universal-input designs.

Use Scenario: Synchronous or asynchronous rectification in isolated/isolated DC/DC modules for telecom or server power supplies.

IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated output; handles 3 A continuous load with low V_F to maintain efficiency.

Use Value: 0.93 V max V_F at 3 A reduces conduction loss; R_θJL = 14 °C/W supports thermal management on dense PCB layouts.

Snubber Network Clamp Diode

High-Frequency Inverter Freewheeling

Use Scenario: Clamp diode in RCD snubber across MOSFETs/IGBTs in SMPS or motor drives.

IC Role / Device Role / Timing Role: Fast turn-on to absorb inductive energy spike; fast turn-off to minimize tail current during reset.

Use Value: 51 nC Q_rr and 25 ns t_rr limit snubber dissipation; 200 V rating covers typical clamp voltages in 100–200 V bus systems.

Use Scenario: Freewheeling path for inductive loads in high-frequency inverters (e.g., ultrasonic drivers, induction heating).

IC Role / Device Role / Timing Role: Provides low-loss return path during switching transitions; must recover before next voltage reversal.

Use Value: Ultra-fast recovery ensures clean commutation at >100 kHz; 175°C T_JMAX supports sustained operation under high ambient conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-fast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S (STMicroelectronics)	600 V V_RRM, 3 A, t_rr = 35 ns, TO-277 package	Higher voltage rating but slower recovery; larger footprint	Select when >200 V blocking is required and layout allows TO-277
ES3D (Vishay)	200 V V_RRM, 3 A, t_rr = 35 ns, SMA package	Same voltage/current rating but 10 ns slower recovery; higher R_θJA	Acceptable where 25 ns t_rr is not critical and SMA footprint is preferred

Compared with STTH3L06S and ES3D, PU3DFS offers the fastest recovery (25 ns) in SOD-128, delivering lower switching loss in high-frequency snubbers and DC/DC outputs - while maintaining identical 200 V/3 A ratings and superior thermal resistance over SMA alternatives.

Availability

PU3DFS is available at Aetrix Electronics and suitable for AC-DC adapters, DC/DC converters, snubber networks, and high-frequency inverter freewheeling requiring stable component supply and consistent parametric performance across production lots.

Supply support for PU3DFS 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, MOSFETs, and ICs for industrial and consumer power systems.

The PU3DFS belongs to TSC's PU3xFS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency power conversion where low Q_rr, tight V_F tolerance, and robust surge capability are essential.

FAQ

What is the maximum repetitive peak reverse voltage rating for PU3DFS?

The PU3DFS has a maximum repetitive peak reverse voltage (V_RRM) of 200 V, verified per Taiwan Semiconductor's A2210 datasheet. This rating defines the highest reverse voltage the device can block repeatedly without avalanche breakdown under normal operating conditions. It is strictly specified for PU3DFS - PU3BFS is rated at 100 V. Designers must ensure system-level reverse transients remain below this limit to guarantee long-term reliability.

What is the reverse recovery time (t_rr) of PU3DFS and under what test conditions is it measured?

The PU3DFS reverse recovery time is 25 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the official datasheet. An alternate condition (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V) yields 31 ns. These values confirm PU3DFS qualifies as an ultra-fast rectifier suitable for >100 kHz switching applications where low stored charge and rapid turn-off reduce switching losses.

Does PU3DFS have a RoHS-compliant and halogen-free construction?

Yes, PU3DFS is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the manufacturer's documentation. Its molding compound meets UL 94V-0 flammability rating, terminals are matte tin plated and solderable per J-STD-002, and it satisfies JESD 201 Class 2 whisker testing. These attributes make PU3DFS suitable for environmentally regulated industrial and consumer power products.

What is the thermal resistance from junction to lead (R_θJL) for PU3DFS, and why does it matter in PCB layout?

PU3DFS has a junction-to-lead thermal resistance (R_θJL) of 14 °C/W, measured with the device mounted on a 5 mm × 5 mm copper pad. This low value indicates highly efficient heat transfer from the die directly into the PCB copper via the leads - making thermal pad design critical. Optimizing copper area and via count under the SOD-128 leads significantly improves power handling and reliability beyond the nominal 3 A rating.

Can PU3DFS be used as a direct replacement for PU3BFS in existing designs?

No - PU3DFS is not a direct replacement for PU3BFS due to its higher 200 V V_RRM versus PU3BFS's 100 V rating. While both share identical package, current rating, and thermal specs, substituting PU3DFS into a 100 V design may introduce unnecessary cost and potential overdesign. Conversely, replacing PU3BFS with PU3DFS in a 200 V system requires verifying layout clearance, snubber sizing, and voltage derating margins - PU3DFS itself remains electrically and mechanically compatible.

PU3DFS 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):: 3A

Voltage - Forward (Vf) (Max) @ If:: 930 mV @ 3 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 25 ns

Current - Reverse Leakage @ Vr:: 2 µA @ 200 V

Capacitance @ Vr, F:: 47pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-128

Operating Temperature - Junction:: -55°C ~ 175°C

PU3DFS FAQ

1.How can I place an order for PU3DFS through Aetrix?

Please submit a Request for Quotation (RFQ) for PU3DFS 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 PU3DFS reliable?

The price and inventory of PU3DFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU3DFS is usually 5 days.

3.What payment methods are accepted for PU3DFS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU3DFS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU3DFS?

PU3DFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU3DFS 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 PU3DFS?

For technical support, including PU3DFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU3DFS requirements.

6.How does Aetrix verify that PU3DFS is sourced from the original manufacturer or authorized distributors?

All PU3DFS 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 PU3DFS meets industry standards.

7.What is the process for return or replacement of PU3DFS?

All PU3DFS units undergo pre-shipment inspection (PSI). If there is an issue with PU3DFS, 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 PU3DFS part is unused and in its original packaging.

Return procedure for PU3DFS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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