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Taiwan Semiconductor Corporation PU2BLS
- Part No.:
- PU2BLS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
PU2BLS.pdf
- Description:
- 25NS, 2A, 200V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
PU2BLS from Taiwan Semiconductor is a 2 A, 100 V ultra-fast surface-mount silicon rectifier diode in SOD-123HE package, featuring 25 ns reverse recovery time, 0.87 V forward voltage at 2 A/25°C, and 50 A surge current capability-used in high-frequency DC/DC converters and snubber circuits.
For engineers reviewing the PU2BLS datasheet, PU2BLS pinout, PU2BLS application, or PU2BLS equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, 14 °C/W junction-to-lead thermal resistance, ultra-fast recovery performance, and SOD-123HE footprint compatibility with automated placement.
Technical Context
The PU2BLS is a single-die, planar-processed silicon PN junction rectifier optimized for high-frequency switching. Its ultra-fast recovery (trr ≤ 25 ns) and low Qrr (31 nC) minimize switching losses in hard-switched topologies.
Thermally, it supports operation from –55°C to +175°C junction temperature, with RθJL = 14 °C/W enabling efficient heat transfer to PCB copper pads-critical for compact power stage designs where thermal management is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage without breakdown |
| IF | 2 A - continuous average forward current rating at TL = 75°C on standard PCB |
| trr | 25 ns - reverse recovery time under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A |
| VF | 0.87 V - forward voltage drop at 2 A and 25°C, directly impacting conduction loss |
| IFSM | 50 A - non-repetitive surge current handling for transient overload protection |
| RθJL | 14 °C/W - junction-to-lead thermal resistance, defining thermal path efficiency to PCB pad |
| Qrr | 31 nC - reverse recovery charge, critical for EMI and switching loss estimation |
Pinout & Package
Package: SOD-123HE - ultra-compact surface-mount plastic case with matte tin-plated leads, UL 94V-0 rated molding compound, and cathode band polarity marking. Weight: 0.013 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to lower-potential side of circuit; must handle full IF and IFSM |
| Cathode | Forward current exit node / reverse-blocking terminal | Marked by band; carries return current and sustains full VRRM during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | trr ≤ 25 ns enables use in >100 kHz switching converters without excessive loss |
| Low forward voltage | VF = 0.87 V @ 2 A/25°C reduces conduction loss and thermal stress |
| High surge robustness | IFSM = 50 A (8.3 ms) supports inrush and fault-current transients |
| Automated assembly ready | SOD-123HE package meets J-STD-020 moisture level 1 and J-STD-002 solderability |
| High-temperature operation | TJ(max) = +175°C allows deployment in thermally demanding industrial environments |
Applications
| Switch-Mode Power Supply Output Rectification | Snubber Network Diode |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Unidirectional current steering and energy transfer during switch off-time; blocks reverse voltage during primary conduction. Use Value: 25 ns trr and 31 nC Qrr reduce switching loss and EMI generation compared to standard fast recovery diodes. | Use Scenario: Clamp voltage spikes across MOSFETs or IGBTs in motor drives and inverters. IC Role / Device Role / Timing Role: Fast turn-on to absorb inductive energy during switching transitions; recovers before next cycle. Use Value: Low VF (0.87 V) minimizes clamp power dissipation; 100 V VRRM suits 60–80 V rail systems. |
| DC/DC Converter Freewheeling Diode | High-Frequency AC-DC Front-End Rectification |
Use Scenario: Synchronous-buck or buck-boost converter freewheeling path with 300 kHz–1 MHz switching. IC Role / Device Role / Timing Role: Provides low-loss current path when main switch is off; must recover before switch re-turn-on. Use Value: 14 °C/W RθJL ensures stable thermal performance under 2 A continuous load on minimal PCB copper. | Use Scenario: Input-stage rectification in compact offline adapters or PoE-powered devices. IC Role / Device Role / Timing Role: Converts high-frequency AC (e.g., from resonant tank) to pulsating DC with minimal ringing. Use Value: 31 pF junction capacitance limits displacement current; 100 V rating covers peak line voltages up to 140 Vpk. |
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 | VRRM = 100 V, trr = 25 ns, but SOD-123 package (not HE); RθJA = 110 °C/W vs. PU2BLS's 79 °C/W | Same voltage/current rating, but higher thermal resistance limits power density in space-constrained layouts | Prefer PU2BLS where board-level thermal relief is limited or ambient temperature exceeds 70°C |
| ES2D | VRRM = 200 V, IF = 2 A, trr = 35 ns, DO-214AA package - larger footprint and slower recovery | Higher voltage rating trades off speed and size; unsuitable for <200 kHz designs requiring minimal Qrr | Select PU2BLS over ES2D when 100 V rating suffices and ultra-fast recovery is mandatory |
Compared with STTH2R01 and ES2D, the PU2BLS delivers superior thermal performance in a smaller SOD-123HE footprint and faster recovery than general-purpose alternatives-making it optimal for high-density, high-frequency power stages where both loss and layout area are constrained.
Availability
PU2BLS is available at Aetrix Electronics and suitable for high-frequency switching, DC/DC conversion, and snubber applications requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for PU2BLS 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.
The PU2BLS belongs to TSC's PU2xLS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency power conversion where low Qrr, tight VF tolerance, and robust surge capability are essential.
FAQ
What is the maximum junction temperature rating for PU2BLS?
The PU2BLS has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table. This allows reliable operation in high-ambient industrial environments. Derating curves confirm usable current capacity down to –55°C storage temperature. The PU2BLS maintains specified electrical parameters within this full range when mounted per JEDEC-standard PCB conditions.
Does PU2BLS have a halogen-free construction?
Yes, the PU2BLS is halogen-free in accordance with IEC 61249-2-21, and RoHS compliant. The molding compound and lead finish meet environmental compliance standards required for modern electronics manufacturing. This applies to all units marked "U2BLS" and manufactured under version A2210, as confirmed in the official Taiwan Semiconductor product documentation for PU2BLS.
What is the reverse recovery time specification for PU2BLS?
The PU2BLS reverse recovery time (trr) is specified as ≤25 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. An alternate condition (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V) yields trr ≤30 ns. These values are measured per JEDEC standards and reflect the device's ultra-fast switching behavior critical for high-frequency power designs using PU2BLS.
Is PU2BLS compatible with lead-free reflow soldering processes?
Yes, the PU2BLS features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for lead-free reflow profiles. Its moisture sensitivity level is J-STD-020 Level 1, meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to assembly. This makes PU2BLS fully compatible with standard Pb-free manufacturing flows used for industrial and consumer electronics.
What does the marking code 'U2BLS' indicate on the PU2BLS device body?
The marking code 'U2BLS' laser-etched on the PU2BLS case identifies the specific variant within the PU2xLS family-corresponding to the 100 V VRRM version. It distinguishes PU2BLS from PU2DLS (marked 'U2DLS', 200 V). This marking is standardized per Taiwan Semiconductor's ordering information and appears consistently on all authentic PU2BLS units shipped under revision A2210.
PU2BLS 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):
- 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:
- 31pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HE
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU2BLS FAQ
1.How can I place an order for PU2BLS through Aetrix?
Please submit a Request for Quotation (RFQ) for PU2BLS 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 PU2BLS reliable?
The price and inventory of PU2BLS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2BLS is usually 5 days.
3.What payment methods are accepted for PU2BLS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2BLS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU2BLS?
PU2BLS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU2BLS 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 PU2BLS?
For technical support, including PU2BLS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2BLS requirements.
6.How does Aetrix verify that PU2BLS is sourced from the original manufacturer or authorized distributors?
All PU2BLS 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 PU2BLS meets industry standards.
7.What is the process for return or replacement of PU2BLS?
All PU2BLS units undergo pre-shipment inspection (PSI). If there is an issue with PU2BLS, 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 PU2BLS part is unused and in its original packaging.
Return procedure for PU2BLS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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