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

Taiwan Semiconductor Corporation PU1BLS

Name: PU1BLS
Brand: Taiwan Semiconductor Corporation
SKU: PU1BLS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU1BLS

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123H

Datasheet:: PU1BLS.pdf

Description:: 25NS, 1A, 100V, ULTRA FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:20,000

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Product details

Overview

PU1BLS from Taiwan Semiconductor is a 1 A, 100 V ultra-fast surface-mount rectifier diode in SOD-123HE package, featuring 25 ns reverse recovery time, 0.84 V forward voltage at 1.0 A/25°C, and 175°C maximum junction temperature-used in high-frequency DC/DC converters and snubber circuits.

For engineers reviewing the PU1BLS datasheet, PU1BLS pinout, PU1BLS application, or PU1BLS equivalent, key selection criteria include repetitive peak reverse voltage (100 V), surge current capability (45 A), thermal resistance (R_θJL = 13 °C/W), and RoHS/halogen-free compliance for automated SMT assembly.

Technical Context

This single-die planar silicon rectifier delivers ultra-fast switching performance with trr ≤ 25 ns under IF = 0.5 A / IR = 1.0 A / Irr = 0.25 A conditions and Qrr = 27 nC, enabling efficient operation in high-frequency power conversion topologies.

Its SOD-123HE package provides low thermal resistance (R_θJL = 13 °C/W) on standard PCB copper pads and supports moisture sensitivity level 1 handling-critical for reflow-compatible, high-yield automated placement in industrial and consumer power supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback or snubber clamp circuits
I_F	1 A continuous - Rated average forward current; determines thermal design margin at ambient temperatures up to 125°C
I_FSM	45 A (8.3 ms) - Peak non-repetitive surge current; supports inrush and transient overload tolerance
t_rr	25 ns - Measured reverse recovery time; enables >1 MHz switching in resonant and quasi-resonant converters
V_F	0.84 V @ 1.0 A, 25°C - Low conduction loss; reduces power dissipation and improves system efficiency
R_θJL	13 °C/W - Junction-to-lead thermal resistance; allows direct thermal path to PCB copper for passive cooling
Junction Temp	−55°C to +175°C - Wide operating range supports automotive under-hood and industrial motor drive environments

Pinout & Package

SOD-123HE surface-mount package with cathode band marking; 2-terminal configuration (anode/cathode); matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit; polarity must align with schematic symbol to prevent reverse bias failure
Cathode	Forward current exit / reverse blocking terminal	Marked by visible band; ties to higher-potential node; determines direction of unidirectional conduction

Key Features

Feature	Design Value
Ultra-fast recovery (t_rr ≤ 25 ns)	Enables high-frequency operation (>1 MHz) with minimal switching loss in resonant converters
Low V_F (0.84 V @ 1 A)	Reduces conduction loss by ~15% vs. standard fast rectifiers, improving thermal headroom
SOD-123HE package	Compatible with 0805 footprint; supports automated pick-and-place and reflow without tombstoning
Moisture Sensitivity Level 1	No dry-pack or baking required before SMT assembly-reduces manufacturing overhead
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS directives for environmentally regulated end equipment

Applications

High-Frequency DC/DC Converters	Snubber Circuits
Use Scenario: Used as output rectifier in 500 kHz–2 MHz isolated flyback or forward converters powering IoT sensors and USB PD adapters. IC Role / Device Role / Timing Role: Ultra-fast unidirectional current switch; blocks reverse voltage during transformer reset phase. Use Value: 25 ns t_rr minimizes reverse recovery loss, increasing efficiency by ≥0.8% over standard fast rectifiers at 1 MHz.	Use Scenario: Placed across MOSFET drain-source in hard-switched SMPS to absorb turn-off energy and suppress voltage spikes. IC Role / Device Role / Timing Role: Clamp diode that conducts transient energy into RC network during MOSFET turn-off edge. Use Value: Low Q_rr (27 nC) limits snubber dissipation and prevents secondary oscillation in high-di/dt switching.
Automotive Body Control Modules	Industrial AC-DC Auxiliary Supplies
Use Scenario: Input rectifier in 12 V–24 V auxiliary power rails for BCMs requiring AEC-Q101 alignment and extended temperature operation. IC Role / Device Role / Timing Role: Primary AC input rectifier converting transformer secondary output to stable DC bus. Use Value: −55°C to +175°C junction rating ensures reliability in engine bay environments without derating.	Use Scenario: Secondary-side rectifier in 24 V/48 V industrial control power supplies where space and thermal constraints limit heatsink use. IC Role / Device Role / Timing Role: High-efficiency freewheeling path during transformer demagnetization in offline SMPS. Use Value: R_θJL = 13 °C/W enables 1 A operation at 85°C ambient with only 5 mm × 5 mm Cu pad-no external heatsink needed.

High-Frequency DC/DC Converters

Snubber Circuits

Use Scenario: Used as output rectifier in 500 kHz–2 MHz isolated flyback or forward converters powering IoT sensors and USB PD adapters.

IC Role / Device Role / Timing Role: Ultra-fast unidirectional current switch; blocks reverse voltage during transformer reset phase.

Use Value: 25 ns t_rr minimizes reverse recovery loss, increasing efficiency by ≥0.8% over standard fast rectifiers at 1 MHz.

Use Scenario: Placed across MOSFET drain-source in hard-switched SMPS to absorb turn-off energy and suppress voltage spikes.

IC Role / Device Role / Timing Role: Clamp diode that conducts transient energy into RC network during MOSFET turn-off edge.

Use Value: Low Q_rr (27 nC) limits snubber dissipation and prevents secondary oscillation in high-di/dt switching.

Automotive Body Control Modules

Industrial AC-DC Auxiliary Supplies

Use Scenario: Input rectifier in 12 V–24 V auxiliary power rails for BCMs requiring AEC-Q101 alignment and extended temperature operation.

IC Role / Device Role / Timing Role: Primary AC input rectifier converting transformer secondary output to stable DC bus.

Use Value: −55°C to +175°C junction rating ensures reliability in engine bay environments without derating.

Use Scenario: Secondary-side rectifier in 24 V/48 V industrial control power supplies where space and thermal constraints limit heatsink use.

IC Role / Device Role / Timing Role: High-efficiency freewheeling path during transformer demagnetization in offline SMPS.

Use Value: R_θJL = 13 °C/W enables 1 A operation at 85°C ambient with only 5 mm × 5 mm Cu pad-no external heatsink needed.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06	V_RRM = 600 V, t_rr = 35 ns, SOD-123 package, I_F = 1 A	Higher voltage rating but slower recovery; less suitable for >500 kHz designs	Select when higher reverse voltage margin is required and switching frequency ≤ 300 kHz
MBR1100	Schottky structure, V_F = 0.82 V @ 1 A, V_RRM = 100 V, t_rr = not applicable (no minority carrier storage)	No reverse recovery charge; limited to ≤ 125°C operation due to leakage rise	Select for low-noise, low-V_F applications below 125°C junction temperature

Compared with STTH1R06 and MBR1100, PU1BLS offers optimal balance of 100 V rating, 25 ns t_rr, and 175°C operation-making it preferred for compact, high-frequency, thermally constrained industrial and automotive auxiliary supplies.

Availability

PU1BLS is available at Aetrix Electronics and suitable for high-frequency DC/DC converters, snubber networks, automotive body control modules, and industrial AC-DC auxiliary supplies requiring stable component supply and long-term manufacturability.

Supply support for PU1BLS 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 and signal conditioning markets since 1979.

The PU1BLS belongs to TSC's ultra-fast rectifier family designed specifically for high-efficiency, high-frequency switching power supplies where low Q_rr, tight V_F tolerance, and robust thermal performance are critical.

FAQ

What is the maximum junction temperature rating for PU1BLS?

The PU1BLS has a maximum junction temperature (T_J) rating of +175°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet revision A2210. This allows PU1BLS to operate reliably in under-hood automotive and high-ambient industrial environments without derating at full 1 A current up to 85°C board temperature when mounted on a 5 mm × 5 mm Cu pad.

Does PU1BLS have a specified reverse recovery time (t_rr)?

Yes, PU1BLS 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 yields t_rr = 19 ns (typical). These values confirm PU1BLS qualifies as an ultra-fast rectifier suitable for switching frequencies above 500 kHz, distinguishing it from standard fast recovery diodes.

What package type does PU1BLS use, and is it compatible with standard SMT processes?

PU1BLS uses the SOD-123HE package, which is footprint-compatible with industry-standard 0805 land patterns. It features matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 2 whisker resistance. With Moisture Sensitivity Level 1, PU1BLS requires no baking prior to reflow-enabling direct use in high-volume automated SMT lines.

How does the forward voltage (V_F) of PU1BLS compare at different temperatures and currents?

PU1BLS exhibits V_F = 0.84 V (max) at I_F = 1.0 A and T_J = 25°C, dropping to 0.70 V (typ) at T_J = 125°C. At 0.5 A, V_F is 0.79 V (typ) at 25°C and 0.64 V (typ) at 125°C. This negative temperature coefficient helps stabilize thermal behavior in parallel configurations and improves efficiency at elevated operating temperatures.

Is PU1BLS RoHS and halogen-free compliant?

Yes, PU1BLS is fully RoHS compliant and halogen-free per IEC 61249-2-21. This compliance is explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet (Rev. A2210) and confirmed by material declarations. No brominated flame retardants or chlorine-based compounds are used in the molding compound or plating.

PU1BLS Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-123H

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 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 @ 100 V

Capacitance @ Vr, F:: 19pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123HE

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

PU1BLS FAQ

1.How can I place an order for PU1BLS through Aetrix?

Please submit a Request for Quotation (RFQ) for PU1BLS 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 PU1BLS reliable?

The price and inventory of PU1BLS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU1BLS is usually 5 days.

3.What payment methods are accepted for PU1BLS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU1BLS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU1BLS?

PU1BLS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU1BLS 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 PU1BLS?

For technical support, including PU1BLS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU1BLS requirements.

6.How does Aetrix verify that PU1BLS is sourced from the original manufacturer or authorized distributors?

All PU1BLS 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 PU1BLS meets industry standards.

7.What is the process for return or replacement of PU1BLS?

All PU1BLS units undergo pre-shipment inspection (PSI). If there is an issue with PU1BLS, 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 PU1BLS part is unused and in its original packaging.

Return procedure for PU1BLS:

1.Submit a request within 90 days.

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

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