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

Taiwan Semiconductor Corporation PU2BLW

Name: PU2BLW
Brand: Taiwan Semiconductor Corporation
SKU: PU2BLW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU2BLW

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: PU2BLW.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:20,000

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Product details

Overview

PU2BLW from Taiwan Semiconductor is a 2 A, 100 V ultra-fast surface-mount rectifier diode in SOD-123W package, featuring 25 ns reverse recovery time, 0.87 V forward voltage at 2 A/25°C, and 50 A surge current capability-designed for high-frequency switching power supplies and snubber circuits.

For engineers reviewing the PU2BLW datasheet, PU2BLW pinout, PU2BLW application, or PU2BLW equivalent, key selection criteria include its 100 V V_RRM, low Q_rr (31 nC), TJ max of 175°C, R_θJA = 75°C/W on standard PCB, and SOD-123W polarity marking with cathode band.

Technical Context

This single-die planar silicon rectifier delivers ultra-fast switching performance via controlled minority-carrier lifetime, enabling efficient operation in DC/DC converters and clamp/snubber networks where low trr and minimal reverse recovery charge are critical. Its 175°C maximum junction temperature supports high-density thermal design.

The device exhibits low forward voltage (0.81 V typ. at 1 A/25°C) and tight IR control (≤2 µA at 25°C), with thermal resistance optimized for SOD-123W mounting on 5 mm × 5 mm copper pads-R_θJL = 17°C/W and R_θJC = 22°C/W confirm effective lead-to-case heat transfer.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage before breakdown; defines safe operating limit in clamping and flyback applications
I_F	2 A - Continuous average forward current rating at TA = 25°C; derates linearly above 25°C per curve in datasheet
t_rr	25 ns - Reverse recovery time under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables >1 MHz switching in resonant topologies
Q_rr	31 nC - Reverse recovery charge; directly impacts switching losses and EMI in hard-switched converters
V_F	0.87 V max at 2 A/25°C - Low conduction loss improves efficiency in high-current, low-voltage output stages
R_θJA	75 °C/W - Junction-to-ambient thermal resistance on standard 5 mm × 5 mm Cu pad; determines required heatsinking margin
I_FSM	50 A - Non-repetitive surge current (8.3 ms sine); supports inrush and fault transient handling without failure

Pinout & Package

SOD-123W surface-mount package with molded epoxy case (UL 94V-0), matte tin-plated leads, and cathode polarity indicated by a visible band on the body. Weight: 0.015 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side in rectification path; requires adequate trace width for 2 A continuous current
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to higher-potential node; must maintain clearance from adjacent conductors at full V_RRM

Key Features

Feature	Design Value
Ultra-fast recovery (t_rr ≤ 25 ns)	Reduces switching losses and ringing in high-frequency SMPS and active clamp circuits
Low Q_rr (31 nC)	Minimizes diode-induced EMI and improves efficiency in synchronous rectifier-assisted topologies
High T_J max (175°C)	Enables reliable operation in thermally constrained environments such as enclosed industrial power modules
SOD-123W footprint	Compatible with automated pick-and-place; supports high-volume manufacturing with J-STD-020 Level 1 moisture sensitivity
RoHS & halogen-free	Meets IEC 61249-2-21 and global environmental compliance requirements for commercial and industrial end equipment

Applications

Switch-Mode Power Supply Output Rectification	Snubber Network Diode
Use Scenario: Used in secondary-side rectification of isolated DC/DC converters operating at 300–1000 kHz. IC Role / Device Role / Timing Role: Unidirectional current conduction with minimal reverse recovery loss during MOSFET turn-on transitions. Use Value: 25 ns t_rr and 31 nC Q_rr reduce cross-conduction losses and improve overall converter efficiency by ≥0.4% at full load.	Use Scenario: Placed across switching FETs or transformers to absorb voltage spikes during turn-off. IC Role / Device Role / Timing Role: Fast clamping element that conducts transient energy before voltage exceeds V_RRM. Use Value: 100 V V_RRM and 50 A I_FSM ensure robust protection against 30–60 V transients in 24 V industrial systems.
DC/DC Converter Freewheeling Path	High-Frequency AC-DC Adapter
Use Scenario: Freewheeling diode in buck or flyback regulators powering FPGA core rails or PoE PDs. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side switch off-time; recovers before next cycle. Use Value: 0.87 V V_F at 2 A reduces conduction loss by ~150 mW vs. standard FR107, improving thermal margin.	Use Scenario: Primary-side snubber and secondary-side rectifier in compact 12 V/2 A wall adapters. IC Role / Device Role / Timing Role: Handles both high dv/dt transients and continuous 2 A output current in space-constrained designs. Use Value: SOD-123W footprint and 0.015 g weight support miniaturization while maintaining 175°C thermal capability.

Switch-Mode Power Supply Output Rectification

Snubber Network Diode

Use Scenario: Used in secondary-side rectification of isolated DC/DC converters operating at 300–1000 kHz.

IC Role / Device Role / Timing Role: Unidirectional current conduction with minimal reverse recovery loss during MOSFET turn-on transitions.

Use Value: 25 ns t_rr and 31 nC Q_rr reduce cross-conduction losses and improve overall converter efficiency by ≥0.4% at full load.

Use Scenario: Placed across switching FETs or transformers to absorb voltage spikes during turn-off.

IC Role / Device Role / Timing Role: Fast clamping element that conducts transient energy before voltage exceeds V_RRM.

Use Value: 100 V V_RRM and 50 A I_FSM ensure robust protection against 30–60 V transients in 24 V industrial systems.

DC/DC Converter Freewheeling Path

High-Frequency AC-DC Adapter

Use Scenario: Freewheeling diode in buck or flyback regulators powering FPGA core rails or PoE PDs.

IC Role / Device Role / Timing Role: Provides low-loss current path during high-side switch off-time; recovers before next cycle.

Use Value: 0.87 V V_F at 2 A reduces conduction loss by ~150 mW vs. standard FR107, improving thermal margin.

Use Scenario: Primary-side snubber and secondary-side rectifier in compact 12 V/2 A wall adapters.

IC Role / Device Role / Timing Role: Handles both high dv/dt transients and continuous 2 A output current in space-constrained designs.

Use Value: SOD-123W footprint and 0.015 g weight support miniaturization while maintaining 175°C thermal capability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R01	V_RRM = 100 V, t_rr = 35 ns, Q_rr = 42 nC, SOD-123 package	Higher Q_rr increases switching loss in >500 kHz designs; same footprint but slightly higher VF (0.92 V)	Acceptable where trr margin >10 ns is available; verify layout thermal relief for R_θJA = 85°C/W
ES2D	V_RRM = 200 V, I_F = 2 A, t_rr = 35 ns, DO-214AA package	Larger DO-214AA footprint requires PCB redesign; higher V_RRM not needed if system max VR ≤ 100 V	Only consider when 200 V rating is mandatory; avoid for space-constrained SOD-123W layouts

Compared with STTH2R01 and ES2D, PU2BLW offers the lowest Q_rr (31 nC) and best thermal resistance (R_θJA = 75°C/W) in SOD-123W, making it optimal for high-efficiency, high-density 100 V rectification where fast recovery and thermal performance are prioritized.

Availability

PU2BLW is available at Aetrix Electronics and suitable for high-frequency switching power supplies, DC/DC converters, and snubber networks requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for PU2BLW 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 PU2BLW belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in compact surface-mount designs where low Q_rr, tight V_F tolerance, and thermal robustness are essential.

FAQ

What is the maximum junction temperature rating for PU2BLW?

The PU2BLW has a maximum junction temperature (T_J) rating of +175°C, verified per absolute maximum ratings table. This allows sustained operation in thermally demanding environments such as enclosed industrial power modules or high-ambient-temperature DC/DC converters. The PU2BLW maintains specified electrical parameters up to this limit when mounted per recommended SOD-123W thermal pad guidelines.

Does PU2BLW have a specified reverse recovery time (t_rr)?

Yes, PU2BLW specifies t_rr ≤ 25 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. An alternate condition (I_F = 1.0 A, di/dt = 50 A/µs, V_R = 30 V) yields t_rr ≤ 30 ns. These values are measured and guaranteed per the official Taiwan Semiconductor datasheet revision A2210.

What is the forward voltage (V_F) of PU2BLW at rated current?

PU2BLW exhibits a typical forward voltage of 0.81 V at I_F = 1 A and 25°C, and 0.87 V maximum at I_F = 2 A and 25°C. At elevated junction temperature (125°C), V_F drops to 0.73 V typical at 2 A-confirming stable conduction behavior across its full operating range.

Is PU2BLW compliant with RoHS and halogen-free standards?

Yes, PU2BLW is RoHS compliant and halogen-free per IEC 61249-2-21. The device uses matte tin-plated leads and UL 94V-0 molding compound, meeting both environmental and safety requirements for commercial and industrial end equipment without requiring exemptions.

What package type does PU2BLW use, and how is polarity marked?

PU2BLW uses the SOD-123W surface-mount package with a cathode band clearly marked on the body to indicate polarity. The package features J-STD-002 solderable leads, JESD 201 Class 2 whisker resistance, and a weight of approximately 0.015 g-optimized for high-speed automated placement and reflow compatibility.

PU2BLW Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-123W

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:: SOD-123W

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

PU2BLW FAQ

1.How can I place an order for PU2BLW through Aetrix?

Please submit a Request for Quotation (RFQ) for PU2BLW 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 PU2BLW reliable?

The price and inventory of PU2BLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2BLW is usually 5 days.

3.What payment methods are accepted for PU2BLW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2BLW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU2BLW?

PU2BLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU2BLW 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 PU2BLW?

For technical support, including PU2BLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2BLW requirements.

6.How does Aetrix verify that PU2BLW is sourced from the original manufacturer or authorized distributors?

All PU2BLW 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 PU2BLW meets industry standards.

7.What is the process for return or replacement of PU2BLW?

All PU2BLW units undergo pre-shipment inspection (PSI). If there is an issue with PU2BLW, 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 PU2BLW part is unused and in its original packaging.

Return procedure for PU2BLW:

1.Submit a request within 90 days.

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

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