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Taiwan Semiconductor Corporation PU2BFSH
- Part No.:
- PU2BFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
PU2BFSH.pdf
- Description:
- DIODE GEN PURP 100V 2A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:5
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Product details
Overview
PU2BFSH from Taiwan Semiconductor is a 2A, 100V ultra-fast surface-mount rectifier diode in SOD-128 package, featuring 25ns reverse recovery time, 0.87V forward voltage at 2A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency freewheeling or snubber diode in DC/DC converters operating up to several hundred kHz.
For engineers reviewing the PU2BFSH datasheet, PU2BFSH pinout, PU2BFSH application, or PU2BFSH equivalent, key selection criteria include its 100V VRRM, 50A IFSM, 175°C TJMAX, low Qrr of 31nC, and SOD-128 thermal performance with RθJL = 17°C/W - critical for compact, thermally constrained power stages.
Technical Context
The PU2BFSH employs planar silicon technology optimized for ultra-fast switching, delivering low conduction loss (VF ≤ 0.93V @ 2A/25°C) and minimal switching loss via controlled reverse recovery (trr ≤ 25ns, Qrr = 31nC). Its single-die configuration and cathode-band polarity marking support automated assembly on high-density PCBs.
Thermally, it is rated for continuous operation from –55°C to +175°C junction temperature, with RθJA = 74°C/W on a 5mm × 5mm Cu pad - enabling stable performance in automotive under-hood and industrial power supply environments where ambient temperatures exceed 105°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage; defines safe blocking capability in 48V–72V bus applications |
| IF | 2 A - Continuous forward current rating; supports sustained output currents in 20–50W DC/DC stages |
| trr | 25 ns - Reverse recovery time at IF = 0.5A; enables efficient operation up to ~1 MHz switching frequencies |
| Qrr | 31 nC - Reverse recovery charge; directly impacts turn-off losses and EMI in hard-switched topologies |
| RθJL | 17 °C/W - Junction-to-lead thermal resistance; allows direct thermal path to PCB copper for passive cooling |
| VF @ 2A/25°C | 0.87 V - Forward voltage drop; determines conduction loss of ~1.74W at full load, critical for thermal budget |
| IFSM | 50 A - Non-repetitive surge current (8.3ms); withstands inrush and fault transients in automotive power modules |
Pinout & Package
SOD-128 surface-mount package with molded epoxy case (UL 94V-0), matte tin-plated leads, and cathode band indicating terminal polarity. Weight: 0.028g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); requires low-inductance layout |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to higher-potential rail (e.g., input bus); carries full output current in freewheel path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements (HTOL, TC, HTRB), enabling use in ADAS and body control modules |
| Ultra-fast trr ≤ 25 ns | Reduces switching loss and voltage overshoot during diode commutation, improving efficiency in 300–800 kHz SMPS |
| RθJL = 17°C/W | Enables direct heat transfer from die to PCB copper land, eliminating need for thermal vias in space-constrained layouts |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives; supports green manufacturing and end-of-life compliance |
Applications
| Automotive DC/DC Converters | Industrial Snubber Circuits |
|---|---|
Use Scenario: Step-down conversion from 48V battery to 12V auxiliary rail in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side FET off-time. Use Value: 25ns trr and 31nC Qrr minimize voltage spikes and EMI during FET turn-on, meeting CISPR-25 Class 5 limits. | Use Scenario: RC snubber across IGBTs in motor drives operating at 10–20kHz switching frequency. IC Role / Device Role / Timing Role: Fast recovery clamp diode absorbing inductive turn-off energy. Use Value: Low VF (0.87V) and high IFSM (50A) ensure reliable transient energy dissipation without thermal runaway. |
| High-Frequency Switching Power Supplies | Telecom Rectification Modules |
Use Scenario: Output rectification in 500kHz LLC resonant converter for server PSUs. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path with minimal reverse recovery burden. Use Value: 175°C TJMAX and RθJL = 17°C/W allow operation at >115°C board temperature without derating. | Use Scenario: Input bridge rectification in 48V telecom power entry modules with hold-up capacitors. IC Role / Device Role / Timing Role: Primary AC–DC interface component handling line-frequency and surge currents. Use Value: 50A IFSM withstands 10× inrush surges; AEC-Q101 qualification ensures long-term reliability in 24/7 infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R010S | 100V VRRM, 2A IF, trr = 35ns, VF = 0.95V @ 2A - slower recovery, higher conduction loss | Higher switching loss in >300kHz designs; less suitable for snubbers requiring fast turn-off | Acceptable for cost-sensitive 100–200kHz industrial supplies where EMI margin exists |
| ES2D | 200V VRRM, 2A IF, trr = 35ns, VF = 0.92V @ 2A - higher voltage rating but slower recovery | Over-specified blocking voltage for 100V systems; increased Qrr raises turn-off loss | Only consider if system requires 200V margin and thermal headroom permits higher VF |
Compared with STTH2R010S and ES2D, the PU2BFSH delivers superior high-frequency efficiency due to its 25ns trr and 31nC Qrr, while maintaining identical 2A/100V ratings - making it the preferred choice for thermally constrained, high-switching-frequency automotive and telecom power stages.
Availability
PU2BFSH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial snubber circuits, and high-frequency switching power supplies requiring stable component supply, AEC-Q101 compliance, and consistent SOD-128 thermal performance.
Supply support for PU2BFSH 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 devices, and MOSFETs for automotive and industrial markets.
The PU2BFSH belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive and telecom infrastructure where fast recovery, thermal robustness, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum junction temperature rating for PU2BFSH?
The PU2BFSH has a maximum junction temperature (TJMAX) of +175°C, verified per AEC-Q101 stress testing. This rating allows continuous operation in under-hood automotive environments and high-ambient industrial power supplies. Derating begins above 25°C ambient, with full 2A current supported up to ~110°C board temperature when mounted on a 5mm × 5mm Cu pad - a key design parameter confirmed in the thermal performance section of the official datasheet.
Is PU2BFSH pin-compatible with PU2DFSH?
No, PU2BFSH and PU2DFSH are not pin-compatible replacements - they share the same SOD-128 package and pinout (anode/cathode), but differ in absolute maximum ratings: PU2BFSH is rated for 100V VRRM, while PU2DFSH is rated for 200V. Substituting PU2BFSH in a 200V design violates voltage safety margins. The marking code "PU2BFS" also differs from "PU2DFS", confirming distinct part identities per Taiwan Semiconductor's ordering documentation.
What does the "B" in PU2BFSH indicate?
The "B" in PU2BFSH denotes the 100V VRRM variant within the PU2xFSH family, as explicitly defined in the ordering information: "'x' defines voltage from 100V (PU2BFSH) to 200V (PU2DFSH)". This letter coding is used solely for voltage grading and does not imply differences in package, thermal performance, or pinout - all variants use SOD-128 and share identical mechanical and thermal specifications.
Does PU2BFSH require moisture preconditioning before reflow soldering?
No, PU2BFSH has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking or dry-pack handling. This eliminates process steps in high-volume SMT lines and reduces risk of popcorning - a verified feature documented in the Mechanical Data section of the official Taiwan Semiconductor datasheet for PU2BFSH.
What is the reverse recovery charge (Qrr) of PU2BFSH, and why does it matter?
The PU2BFSH has a reverse recovery charge (Qrr) of 31 nC, measured under standard conditions (IF = 2.0A, di/dt = 200A/µs, VR = 100V). Qrr directly determines turn-off switching loss and voltage overshoot during commutation. In high-frequency DC/DC converters, lower Qrr reduces EMI generation and improves efficiency - a critical advantage over alternatives like ES2D (Qrr ≈ 45nC) or STTH2R010S (Qrr ≈ 40nC), as confirmed in the Electrical Specifications table.
PU2BFSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- 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:
- 32pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU2BFSH FAQ
1.How can I place an order for PU2BFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for PU2BFSH 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 PU2BFSH reliable?
The price and inventory of PU2BFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2BFSH is usually 5 days.
3.What payment methods are accepted for PU2BFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2BFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU2BFSH?
PU2BFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU2BFSH 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 PU2BFSH?
For technical support, including PU2BFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2BFSH requirements.
6.How does Aetrix verify that PU2BFSH is sourced from the original manufacturer or authorized distributors?
All PU2BFSH 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 PU2BFSH meets industry standards.
7.What is the process for return or replacement of PU2BFSH?
All PU2BFSH units undergo pre-shipment inspection (PSI). If there is an issue with PU2BFSH, 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 PU2BFSH part is unused and in its original packaging.
Return procedure for PU2BFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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