My Inquiry
My Account
Taiwan Semiconductor Corporation PU1DLW
- Part No.:
- PU1DLW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
PU1DLW.pdf
- Description:
- 25NS, 1A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:19,959
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PU1DLW from Taiwan Semiconductor is a 1A, 200V ultra-fast surface-mount rectifier diode in SOD-123W package, featuring 25ns reverse recovery time, 0.84V forward voltage at 1A/25°C, and 45A surge current capability. It serves as a high-efficiency freewheeling or snubber diode in DC/DC converters operating up to several hundred kHz.
For engineers reviewing the PU1DLW datasheet, PU1DLW pinout, PU1DLW application, or PU1DLW equivalent, key selection criteria include its 200V VRRM, low Qrr of 27nC, thermal resistance RθJA of 80°C/W on standard PCB, and compatibility with automated SMT placement per J-STD-002.
Technical Context
The PU1DLW employs planar silicon technology optimized for ultra-fast switching, delivering low conduction loss and minimal reverse recovery charge. Its 25ns trr and 27nC Qrr enable efficient operation in high-frequency hard-switched topologies where diode switching losses dominate.
Designed for surface-mount use on standard FR-4 PCBs with 5mm × 5mm copper pads, the device maintains rated performance across –55°C to +175°C junction temperature range and exhibits stable IR ≤2µA at 200V/25°C and ≤10µA at 200V/125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; defines maximum blocking capability in DC/DC output or snubber circuits |
| IF | 1 A - Continuous average forward current rating at TL = 75°C; determines steady-state power handling in freewheel paths |
| trr | 25 ns - Measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables clean turn-off in >200kHz switching applications |
| Qrr | 27 nC - Reverse recovery charge; directly impacts switching loss and EMI in hard-switched converters |
| VF | 0.84 V @ 1A, 25°C - Forward voltage drop; sets conduction loss (0.84W at 1A) and thermal load under full load |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance on standard 5mm × 5mm Cu pad; used to calculate max ambient temperature for safe 1A operation |
| IFSM | 45 A @ t = 8.3ms - Non-repetitive surge current rating; supports inrush and fault-current tolerance in power supplies |
Pinout & Package
Package: SOD-123W - Surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, cathode band polarity marking, and 0.015g mass. Compliant with JESD201 Class 2 whisker testing and J-STD-020 moisture level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path); must handle full 1A DC and 45A surge |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive); blocks up to 200V reverse bias with <2µA leakage at 25°C |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | 25ns trr and 27nC Qrr minimize switching loss and voltage overshoot in high-frequency DC/DC stages |
| High-temperature operation | Junction rating up to +175°C enables reliable use in thermally constrained industrial or automotive under-hood environments |
| Low forward voltage | 0.84V @ 1A/25°C reduces conduction loss versus standard fast rectifiers (typically >0.95V), improving efficiency by ~0.1–0.15% at full load |
| SMT-optimized construction | SOD-123W package with J-STD-002 solderable leads and moisture level 1 ensures robust reflow yield in high-volume automated assembly |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS directives-required for export to EU, Japan, and many industrial markets |
Applications
| DC/DC Converter Output Rectification | Snubber Network Diode |
|---|---|
Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters operating at 100–500kHz. IC Role / Device Role / Timing Role: Freewheeling diode conducting during transformer reset phase; critical for energy transfer efficiency and voltage regulation. Use Value: 25ns trr prevents reverse recovery-induced voltage spikes that would stress MOSFETs or require oversized snubbers. | Use Scenario: Placed across switching FETs or transformers in clamped or RCD snubber networks. IC Role / Device Role / Timing Role: Fast turn-on/turn-off element absorbing inductive energy spikes during switching transitions. Use Value: Low Qrr (27nC) minimizes snubber loss and allows smaller RC components without compromising clamping effectiveness. |
| High-Frequency Inverter Auxiliary Path | Industrial Power Supply Freewheel Diode |
Use Scenario: Employed in auxiliary gate-drive or bias supply paths of motor inverters switching at ≥20kHz. IC Role / Device Role / Timing Role: Rectifies high-frequency AC from small signal transformers or resonant windings. Use Value: Stable 200V VRRM and 175°C TJ rating ensure reliability despite voltage transients and ambient heat near IGBT modules. | Use Scenario: Freewheel path in industrial SMPS PFC boost stages or hold-up capacitor charging circuits. IC Role / Device Role / Timing Role: Conducts continuous 1A current during line-cycle valleys while blocking 200V reverse peaks. Use Value: 0.84V VF and 80°C/W RθJA allow operation at 75°C ambient without derating-reducing heatsink requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02U (STMicroelectronics) | Same 1A/200V rating, but 30ns trr, 35nC Qrr, and TO-277 package (larger footprint) | Higher thermal mass but requires larger PCB area; less suitable for dense SMT layouts | Select when higher surge margin (60A IFSM) outweighs board space constraints |
| ES1D (ON Semiconductor) | 1A/200V, 35ns trr, 40nC Qrr, SOD-123 package (slightly smaller pad layout) | Slower recovery increases switching loss in >300kHz designs; lower RθJA (70°C/W) improves thermal margin | Prefer for cost-sensitive, lower-frequency (<200kHz) applications where thermal headroom is limited |
Compared with STTH1R02U and ES1D, the PU1DLW offers the lowest Qrr (27nC) and tightest trr (25ns) in SOD-123W, making it optimal for compact, high-frequency DC/DC where diode switching loss and EMI are critical.
Availability
PU1DLW is available at Aetrix Electronics and suitable for DC/DC converter design, snubber network implementation, and industrial power supply freewheeling applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for PU1DLW 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS, MOSFETs, and IGBTs for industrial and consumer applications.
The PU1DLW belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-frequency switching power supplies where low Qrr, tight trr, and SMT manufacturability are essential.
FAQ
What is the maximum junction temperature rating for PU1DLW?
The PU1DLW has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as industrial motor drives or enclosed power supplies. Derating begins above 75°C lead temperature, and thermal design must respect RθJA = 80°C/W on standard 5mm × 5mm Cu pads. The PU1DLW maintains stable reverse leakage (<10µA) even at 125°C junction temperature.
Does PU1DLW have a halogen-free and RoHS-compliant construction?
Yes, the PU1DLW is both halogen-free per IEC 61249-2-21 and RoHS compliant, as explicitly stated in the official Taiwan Semiconductor datasheet revision A2210. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002. These certifications are confirmed in the "Features" and "Mechanical Data" sections of the PU1DLW documentation.
What is the reverse recovery time (trr) specification for PU1DLW, and under what test conditions?
The PU1DLW reverse recovery time is specified as 25ns, measured under conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the Electrical Specifications table. An alternate condition yields 34ns at IF = 1.0A, di/dt = 50A/µs, VR = 30V. Both values confirm its classification as an ultra-fast rectifier suitable for >200kHz switching frequencies. The PU1DLW datasheet provides these exact test points.
Is PU1DLW pin-compatible with PU1BLW, and how do their electrical ratings differ?
Yes, PU1DLW and PU1BLW share identical SOD-123W package, pinout, and thermal characteristics-but differ only in VRRM: PU1BLW is rated for 100V, while PU1DLW is rated for 200V. All other parameters-including IF = 1A, IFSM = 45A, trr, Qrr, and thermal resistances-are identical. The PU1DLW marking code is "U1DLW", confirming its 200V variant identity.
What is the typical forward voltage of PU1DLW at 1A and 125°C junction temperature?
The typical forward voltage of PU1DLW at IF = 1.0A and TJ = 125°C is 0.70V, as specified in the Electrical Specifications table. This represents a reduction from 0.84V at 25°C due to negative temperature coefficient of silicon diodes. The PU1DLW maintains this low VF across its full operating temperature range, supporting stable conduction loss in thermally demanding applications.
PU1DLW 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):
- 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-123W
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU1DLW FAQ
1.How can I place an order for PU1DLW through Aetrix?
Please submit a Request for Quotation (RFQ) for PU1DLW 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 PU1DLW reliable?
The price and inventory of PU1DLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU1DLW is usually 5 days.
3.What payment methods are accepted for PU1DLW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU1DLW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU1DLW?
PU1DLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU1DLW 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 PU1DLW?
For technical support, including PU1DLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU1DLW requirements.
6.How does Aetrix verify that PU1DLW is sourced from the original manufacturer or authorized distributors?
All PU1DLW 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 PU1DLW meets industry standards.
7.What is the process for return or replacement of PU1DLW?
All PU1DLW units undergo pre-shipment inspection (PSI). If there is an issue with PU1DLW, 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 PU1DLW part is unused and in its original packaging.
Return procedure for PU1DLW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PU1DLW Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
