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

Taiwan Semiconductor Corporation PU1DLS

Name: PU1DLS
Brand: Taiwan Semiconductor Corporation
SKU: PU1DLS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU1DLS

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123H

Datasheet:: PU1DLS.pdf

Description:: 25NS, 1A, 200V, ULTRA FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:20,000

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Product details

Overview

PU1DLS from Taiwan Semiconductor is a 1A, 200V ultra-fast surface-mount rectifier diode in SOD-123HE package, featuring 25ns reverse recovery time, 0.84V forward voltage at 1A/25°C, and 175°C maximum junction temperature. It serves as a high-efficiency freewheeling or snubber diode in DC/DC converters operating at >100kHz.

For engineers reviewing the PU1DLS datasheet, PU1DLS pinout, PU1DLS application, or PU1DLS equivalent, key selection criteria include its 200V V_RRM, low Q_rr of 27nC, SOD-123HE thermal performance (R_θJA = 71°C/W), and suitability for automated placement in space-constrained power stages.

Technical Context

The PU1DLS uses planar silicon technology to achieve ultra-fast switching with controlled minority-carrier lifetime. Its 25ns trr and 3.4A peak reverse recovery current (IRM) support hard-switched topologies where low stored charge minimizes turn-off losses.

Thermally, it delivers R_θJL = 13°C/W and operates up to 175°C junction temperature. The SOD-123HE package includes matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operation in 170V AC rectification or 200V DC bus clamping
I_F	1 A - Continuous forward current rating; supports 12W dissipation at 0.84V drop in compact layouts
t_rr	25 ns - Measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables >500kHz switching without excessive diode loss
Q_rr	27 nC - Low recovered charge reduces EMI and MOSFET turn-on stress in synchronous buck converters
T_J(max)	175 °C - High-temperature capability allows operation in sealed enclosures or near hot components
R_θJA	71 °C/W - Thermal resistance on 5mm × 5mm Cu pad; enables 1A operation without heatsink below 75°C ambient

Pinout & Package

SOD-123HE surface-mount package with cathode band marking; 0.013g mass; UL 94V-0 molding compound; moisture sensitivity level 1 (unlimited floor life).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential node (e.g., switch node in buck converter); requires low-inductance trace routing
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to output rail or ground return; critical for snubber placement and EMI filtering

Key Features

Feature	Design Value
Ultra-fast recovery (t_rr ≤ 25 ns)	Reduces switching loss and voltage overshoot in high-frequency DC/DC stages above 200kHz
Low Q_rr (27 nC)	Minimizes reverse recovery current spike into high-side MOSFETs, lowering gate drive stress
SOD-123HE footprint	Enables automated pick-and-place with industry-standard 0.95mm lead pitch and 1.7mm body width
175°C junction rating	Supports operation in automotive under-hood or industrial motor drive environments without derating

Applications

High-Frequency DC/DC Converter	Snubber Network
Use Scenario: Secondary-side rectification in 300–500kHz isolated flyback or forward converters powering PoE PDs or telecom modules. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time; handles 1A average current with minimal conduction loss. Use Value: 0.84V V_F at 1A reduces conduction loss to <0.84W, while 25ns t_rr limits switching loss to <15mW at 400kHz.	Use Scenario: RCD snubber across primary-side MOSFET in 100–200kHz offline SMPS for LED drivers or industrial controls. IC Role / Device Role / Timing Role: Clamps voltage spikes during MOSFET turn-off; absorbs energy from transformer leakage inductance. Use Value: 200V V_RRM withstands 1.5× reflected input voltage; low C_J (19pF) avoids parasitic resonance with snubber capacitor.
Automotive Body Control Module	Industrial Sensor Power Supply
Use Scenario: Reverse polarity protection and load dump suppression in 12V/24V BCM sub-circuits powering relays or LIN transceivers. IC Role / Device Role / Timing Role: Series-blocking diode preventing battery reversal damage; clamps transient surges up to ISO 7637-2 Pulse 5a. Use Value: 45A I_FSM survives 100ms load dump pulses; 175°C T_J(max) ensures reliability in engine bay ambient up to 105°C.	Use Scenario: Auxiliary 5V/3.3V supply rectification in DIN-rail mounted PLC I/O modules exposed to wide ambient (-40°C to +85°C). IC Role / Device Role / Timing Role: Input rectifier feeding linear regulator or buck controller; handles 1A continuous load with low thermal rise. Use Value: R_θJA = 71°C/W allows full 1A current at 85°C ambient on standard FR4; RoHS/halogen-free compliance meets industrial safety standards.

High-Frequency DC/DC Converter

Snubber Network

Use Scenario: Secondary-side rectification in 300–500kHz isolated flyback or forward converters powering PoE PDs or telecom modules.

IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time; handles 1A average current with minimal conduction loss.

Use Value: 0.84V V_F at 1A reduces conduction loss to <0.84W, while 25ns t_rr limits switching loss to <15mW at 400kHz.

Use Scenario: RCD snubber across primary-side MOSFET in 100–200kHz offline SMPS for LED drivers or industrial controls.

IC Role / Device Role / Timing Role: Clamps voltage spikes during MOSFET turn-off; absorbs energy from transformer leakage inductance.

Use Value: 200V V_RRM withstands 1.5× reflected input voltage; low C_J (19pF) avoids parasitic resonance with snubber capacitor.

Automotive Body Control Module

Industrial Sensor Power Supply

Use Scenario: Reverse polarity protection and load dump suppression in 12V/24V BCM sub-circuits powering relays or LIN transceivers.

IC Role / Device Role / Timing Role: Series-blocking diode preventing battery reversal damage; clamps transient surges up to ISO 7637-2 Pulse 5a.

Use Value: 45A I_FSM survives 100ms load dump pulses; 175°C T_J(max) ensures reliability in engine bay ambient up to 105°C.

Use Scenario: Auxiliary 5V/3.3V supply rectification in DIN-rail mounted PLC I/O modules exposed to wide ambient (-40°C to +85°C).

IC Role / Device Role / Timing Role: Input rectifier feeding linear regulator or buck controller; handles 1A continuous load with low thermal rise.

Use Value: R_θJA = 71°C/W allows full 1A current at 85°C ambient on standard FR4; RoHS/halogen-free compliance meets industrial safety standards.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	V_RRM = 600V, t_rr = 35ns, VF = 0.95V @ 1A - higher voltage rating but slower recovery and higher conduction loss	Better suited for 400V AC input PFC stages; less optimal for 200V DC bus snubbers due to excess V_RRM margin and higher Q_rr	Select when system requires >300V reverse blocking or legacy 600V design reuse
MBR120LSFT1G	Schottky structure, V_F = 0.45V @ 1A, but V_RRM = 20V - no reverse blocking beyond 20V	Only viable in low-voltage (<20V) DC/DC outputs; unsuitable for 200V snubbers or 12V reverse protection with load dump	Choose only for sub-20V applications where ultra-low V_F outweighs lack of high-V_RRM capability

Compared with STTH1L06S and MBR120LSFT1G, the PU1DLS uniquely balances 200V blocking, 25ns speed, and 0.84V forward drop-making it optimal for cost-sensitive, thermally constrained 100–200V DC power stages where Schottky voltage limits or Si fast-recovery sluggishness are unacceptable.

Availability

PU1DLS is available at Aetrix Electronics and suitable for high-frequency DC/DC converters, snubber networks, and automotive body control modules requiring stable component supply and consistent SOD-123HE form factor.

Supply support for PU1DLS 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 PU1DLS belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in space-limited applications such as PoE injectors, LED drivers, and automotive subsystems.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) specified for PU1DLS?

The PU1DLS has a maximum repetitive peak reverse voltage (V_RRM) of 200 V, as confirmed in the Absolute Maximum Ratings table for the PU1DLS variant. This rating is validated under standard test conditions (TA = 25°C) and defines the highest reverse voltage the PU1DLS can block repeatedly without breakdown. It is distinct from the 100V rating of the PU1BLS variant in the same family.

Does PU1DLS meet RoHS and halogen-free compliance requirements?

Yes, the PU1DLS is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor documentation. These compliance attributes apply directly to the PU1DLS variant and are verified for the SOD-123HE package configuration shipped under ordering code PU1DLS.

What is the reverse recovery time (t_rr) of PU1DLS and under what test conditions is it measured?

The PU1DLS reverse recovery time is 25 ns, measured under the condition IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This value is listed in the ELECTRICAL SPECIFICATIONS table and applies specifically to the PU1DLS variant. An alternate t_rr of 34 ns is specified under IF = 1.0A, di/dt = 50A/µs, VR = 30V - both values reflect actual device behavior, not typical estimates.

Is PU1DLS suitable for use in automotive under-hood applications?

Yes, PU1DLS is suitable for automotive under-hood applications due to its -55°C to +175°C operating junction temperature range, 45A surge rating (I_FSM), and SOD-123HE package qualified to JESD201 Class 2 whisker resistance. Its 200V V_RRM supports 12V/24V systems with load dump protection, and its RoHS/halogen-free status meets automotive material compliance requirements.

What is the thermal resistance from junction to ambient (R_θJA) for PU1DLS, and how is it measured?

The junction-to-ambient thermal resistance (R_θJA) for PU1DLS is 71°C/W, measured on a standard 5mm × 5mm copper pad PCB per JEDEC test board guidelines. This value is documented in the THERMAL PERFORMANCE section and applies to the SOD-123HE package of PU1DLS. It enables accurate thermal design for 1A continuous operation without forced airflow in industrial or automotive enclosures.

PU1DLS 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):: 200 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 @ 200 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

PU1DLS FAQ

1.How can I place an order for PU1DLS through Aetrix?

Please submit a Request for Quotation (RFQ) for PU1DLS 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 PU1DLS reliable?

The price and inventory of PU1DLS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU1DLS is usually 5 days.

3.What payment methods are accepted for PU1DLS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU1DLS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU1DLS?

PU1DLS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU1DLS 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 PU1DLS?

For technical support, including PU1DLS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU1DLS requirements.

6.How does Aetrix verify that PU1DLS is sourced from the original manufacturer or authorized distributors?

All PU1DLS 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 PU1DLS meets industry standards.

7.What is the process for return or replacement of PU1DLS?

All PU1DLS units undergo pre-shipment inspection (PSI). If there is an issue with PU1DLS, 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 PU1DLS part is unused and in its original packaging.

Return procedure for PU1DLS:

1.Submit a request within 90 days.

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

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