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

Taiwan Semiconductor Corporation PU2BB

Name: PU2BB
Brand: Taiwan Semiconductor Corporation
SKU: PU2BB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU2BB

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: PU2BB.pdf

Description:: 25NS, 2A, 100V, ULTRA FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:6,000

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Product details

Overview

PU2BB from Taiwan Semiconductor is a 2A, 100V ultra-fast surface-mount rectifier in DO-214AA (SMB) package, featuring 25ns reverse recovery time, 0.87V forward voltage at 2A/25°C, and 50A surge current capability. It serves as a primary output rectifier in high-frequency DC/DC converters requiring low conduction loss and fast switching.

For engineers reviewing the PU2BB datasheet, PU2BB pinout, PU2BB application, or PU2BB equivalent, key selection criteria include its 100V V_RRM, 2A continuous forward current rating, 19–25ns trr range, thermal resistance of 16°C/W (junction-to-lead), and SMB package compatibility with automated SMT assembly.

Technical Context

The PU2BB employs planar silicon technology optimized for ultra-fast recovery, achieving sub-30ns trr under standardized test conditions (IF = 0.5A, IR = 1.0A, Irr = 0.25A). Its single-die configuration supports unidirectional conduction with cathode-band polarity marking and operates across –55°C to +175°C junction temperature range.

Thermal performance is characterized with R_θJL = 16°C/W and R_θJA = 73°C/W on a 10mm × 10mm Cu pad PCB. Electrical behavior includes low leakage (<2µA @ 25°C, <10µA @ 125°C) and stable VF down to 0.66V at 1A/125°C, enabling reliable operation in thermally constrained power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage the device blocks without breakdown; defines usable input/output voltage headroom in flyback or buck-derived topologies.
I_F	2 A - Continuous average forward current rating at TA = 25°C; derates linearly above 25°C per Fig.1 curve.
t_rr	19–25 ns - Measured reverse recovery time under defined di/dt and current conditions; directly impacts switching loss and EMI in hard-switched SMPS.
V_F @ 2A/25°C	0.87 V (max) - Forward voltage drop at rated current; determines conduction loss (P_cond ≈ I_F × V_F) and thermal loading in high-duty-cycle applications.
R_θJL	16 °C/W - Junction-to-lead thermal resistance; enables direct solder-joint temperature estimation for reliability modeling and thermal pad design.
I_FSM	50 A - Non-repetitive peak surge current (8.3ms sine); supports inrush and transient overload handling in AC-input rectification or snubber circuits.
C_J	33 pF - Junction capacitance at 1MHz/4V; influences high-frequency turn-off behavior and resonant circuit interaction in LLC or ZVS designs.

Pinout & Package

DO-214AA (SMB) surface-mount package with molded plastic case (UL 94V-0), matte tin-plated leads, and cathode band indicating terminal polarity. Weight: 0.087g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in synchronous rectification or transformer secondary center-tap).
Cathode	Forward current exit point; marked by band	Connected to output rail or filter capacitor; polarity must match PCB silkscreen and layout to prevent reverse bias failure.

Key Features

Feature	Design Value
Ultra-fast recovery (t_rr ≤ 25 ns)	Reduces switching losses and ringing in >100kHz DC/DC converters, improving efficiency and easing EMI filtering requirements.
Low V_F (0.87V max @ 2A/25°C)	Minimizes conduction loss in high-current paths, lowering thermal stress on PCB copper and enabling smaller heatsinking in space-constrained modules.
Moisture sensitivity level 1 (J-STD-020)	Eliminates bake preconditioning before reflow; supports standard SMT assembly without special handling or floor-life management.
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and global environmental directives, enabling use in consumer, industrial, and automotive-qualified end equipment.
Single-die construction	Ensures consistent electrical parameters and thermal response versus dual-die or stacked configurations; simplifies SPICE modeling and reliability prediction.

Applications

High-Frequency Switching Power Supplies	DC/DC Converter Output Rectification
Use Scenario: Primary-side or secondary-side rectification in 200–500kHz flyback, forward, or half-bridge converters powering telecom or server PSUs. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 25ns t_rr and low Q_rr (31nC) reduce turn-off loss and voltage overshoot, improving efficiency over standard FRDs by ≥0.5% at full load.	Use Scenario: Output rectifier in isolated 12V/48V intermediate bus converters used in datacom and networking equipment. IC Role / Device Role / Timing Role: Freewheeling path during MOSFET off-time; conducts stored inductor energy to maintain output regulation. Use Value: 0.87V V_F at 2A lowers conduction loss vs. 1.1V alternatives, reducing thermal rise on 1-oz copper pads and extending MTBF.
Snubber Circuits	Industrial Motor Drive Auxiliary Supplies
Use Scenario: Clamp diode in RCD snubbers across MOSFETs or IGBTs in variable-frequency drives and UPS inverters. IC Role / Device Role / Timing Role: Fast turn-on to absorb voltage spikes during switching transitions; recovers before next cycle begins. Use Value: 19ns t_rr ensures full recovery within typical 500ns–1µs dead times, preventing snap-off failure and secondary breakdown.	Use Scenario: Auxiliary 5V/3.3V supply rectification in PLC I/O modules and servo amplifier control boards. IC Role / Device Role / Timing Role: Input-stage rectifier feeding linear or buck regulator powering microcontrollers and gate drivers. Use Value: 175°C T_JMAX and robust 50A I_FSM support operation in sealed enclosures with ambient temperatures up to 85°C.

High-Frequency Switching Power Supplies

DC/DC Converter Output Rectification

Use Scenario: Primary-side or secondary-side rectification in 200–500kHz flyback, forward, or half-bridge converters powering telecom or server PSUs.

IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 25ns t_rr and low Q_rr (31nC) reduce turn-off loss and voltage overshoot, improving efficiency over standard FRDs by ≥0.5% at full load.

Use Scenario: Output rectifier in isolated 12V/48V intermediate bus converters used in datacom and networking equipment.

IC Role / Device Role / Timing Role: Freewheeling path during MOSFET off-time; conducts stored inductor energy to maintain output regulation.

Use Value: 0.87V V_F at 2A lowers conduction loss vs. 1.1V alternatives, reducing thermal rise on 1-oz copper pads and extending MTBF.

Snubber Circuits

Industrial Motor Drive Auxiliary Supplies

Use Scenario: Clamp diode in RCD snubbers across MOSFETs or IGBTs in variable-frequency drives and UPS inverters.

IC Role / Device Role / Timing Role: Fast turn-on to absorb voltage spikes during switching transitions; recovers before next cycle begins.

Use Value: 19ns t_rr ensures full recovery within typical 500ns–1µs dead times, preventing snap-off failure and secondary breakdown.

Use Scenario: Auxiliary 5V/3.3V supply rectification in PLC I/O modules and servo amplifier control boards.

IC Role / Device Role / Timing Role: Input-stage rectifier feeding linear or buck regulator powering microcontrollers and gate drivers.

Use Value: 175°C T_JMAX and robust 50A I_FSM support operation in sealed enclosures with ambient temperatures up to 85°C.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06	V_RRM = 600V, I_F = 2A, t_rr = 35ns, DO-214AA	Higher voltage rating but slower recovery; higher V_F (1.15V @ 2A)	Select when system requires >200V blocking but tolerates higher switching loss.
ES2D	V_RRM = 200V, I_F = 2A, t_rr = 35ns, DO-214AA	Same voltage class as PU2DB variant but slower than PU2BB; higher V_F (0.95V @ 2A)	Acceptable where 25ns t_rr is not critical and cost is prioritized over efficiency.

Compared with STTH2R06 and ES2D, the PU2BB delivers superior high-frequency performance due to its 19–25ns t_rr and lowest V_F in its 100V class, making it optimal for efficiency-critical 200–1000kHz DC/DC stages where thermal margin is limited.

Availability

PU2BB is available at Aetrix Electronics and suitable for high-frequency switching power supplies, DC/DC converter output rectification, and snubber circuits requiring stable component supply and J-STD-020 Level 1 moisture handling.

Supply support for PU2BB 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, industrial, and computing markets since 1979.

The PU2BB belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency AC/DC and DC/DC conversion where low trr, low VF, and robust surge capability are essential.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for PU2BB?

The PU2BB has a V_RRM of 100 V, as specified in the Absolute Maximum Ratings table. This value is fixed for the PU2BB variant and differs from the 200V-rated PU2DB. Exceeding 100V in repetitive reverse bias risks avalanche breakdown and permanent degradation of the PU2BB.

Does PU2BB support automated SMT placement?

Yes, the PU2BB supports automated surface-mount placement. Its DO-214AA (SMB) package, matte tin-plated leads, and J-STD-020 Level 1 moisture sensitivity rating eliminate the need for baking or special handling-enabling direct use in standard reflow processes without yield impact.

What is the reverse recovery time (t_rr) of PU2BB under standard test conditions?

The PU2BB exhibits t_rr = 19 ns (typical) and ≤25 ns (maximum) when tested at IF = 0.5A, IR = 1.0A, and Irr = 0.25A. Alternate conditions (IF = 1.0A, di/dt = 50A/µs, VR = 30V) yield 30 ns max. These values are measured per JEDEC standards and confirmed in the Electrical Specifications section of the PU2BB datasheet.

Is PU2BB RoHS and halogen-free compliant?

Yes, the PU2BB is RoHS compliant and halogen-free per IEC 61249-2-21. This compliance is explicitly stated in the FEATURES section and verified through material declarations and third-party testing, supporting use in environmentally regulated markets including EU, Japan, and China.

What thermal resistance values apply to PU2BB in PCB-mounted configuration?

When mounted on a 10mm × 10mm copper pad PCB, the PU2BB has R_θJL = 16°C/W (junction-to-lead), R_θJC = 22°C/W (junction-to-case), and R_θJA = 73°C/W (junction-to-ambient). These values are provided in the THERMAL PERFORMANCE section and are critical for thermal design of compact power modules using the PU2BB.

PU2BB 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):: 100 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 @ 100 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

PU2BB FAQ

1.How can I place an order for PU2BB through Aetrix?

Please submit a Request for Quotation (RFQ) for PU2BB 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 PU2BB reliable?

The price and inventory of PU2BB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2BB is usually 5 days.

3.What payment methods are accepted for PU2BB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2BB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU2BB?

PU2BB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU2BB 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 PU2BB?

For technical support, including PU2BB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2BB requirements.

6.How does Aetrix verify that PU2BB is sourced from the original manufacturer or authorized distributors?

All PU2BB 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 PU2BB meets industry standards.

7.What is the process for return or replacement of PU2BB?

All PU2BB units undergo pre-shipment inspection (PSI). If there is an issue with PU2BB, 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 PU2BB part is unused and in its original packaging.

Return procedure for PU2BB:

1.Submit a request within 90 days.

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

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