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Taiwan Semiconductor Corporation ES2DAF-T
- Part No.:
- ES2DAF-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
ES2DAF-T.pdf
- Description:
- 35NS, 2A, 200V, SUPER FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
ES2DAF-T from Taiwan Semiconductor is a 2A, 200V super fast surface-mount rectifier in SMAF package, featuring 35ns reverse recovery time, 0.91V forward voltage at 2A/25°C, and 50A surge current capability. It serves as a freewheeling or output rectifier in high-frequency DC-DC converters requiring low conduction loss and fast switching.
For engineers reviewing the ES2DAF-T datasheet, ES2DAF-T pinout, ES2DAF-T application, or ES2DAF-T equivalent, key selection criteria include repetitive peak reverse voltage (200V), thermal resistance (RθJL = 15°C/W), junction temperature range (–55°C to +150°C), and RoHS/halogen-free compliance for industrial power designs.
Technical Context
The ES2DAF-T uses a single-die, glass-passivated silicon junction optimized for super-fast recovery (trr ≤ 35ns) with low stored charge, enabling efficient operation in switching-mode power supplies above 100kHz. Its low forward voltage (0.91V @ 2A, 25°C) reduces conduction losses while maintaining tight thermal performance on standard PCB copper pads.
Designed for automated SMT assembly, the device meets J-STD-020 moisture sensitivity level 1 and JESD201 Class 1 whisker resistance. Polarity is marked by a cathode band, and terminals are matte tin-plated for reliable solderability per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost output stages |
| IF | 2 A - Continuous forward current rating; supports compact 2A DC-DC output rectification without derating at 75°C ambient |
| trr | 35 ns - Reverse recovery time; enables stable operation up to ~500 kHz switching frequency with minimal switching loss |
| VF @ 2A, 25°C | 0.91 V - Forward voltage drop; contributes <1.82W conduction loss at full load, easing thermal design |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; allows direct heat transfer to PCB copper, supporting >1.5W dissipation with minimal heatsinking |
| IFSM | 50 A - Non-repetitive surge current (8.3ms); withstands typical input-line transient events in offline SMPS |
| Junction temp. range | –55°C to +150°C - Full operational range; supports industrial and automotive under-hood environments |
Pinout & Package
Package: SMAF (Surface Mount Axial Flat), JEDEC DO-221AC compliant; 2.7mm × 4.2mm footprint, 1.2mm height, matte tin-plated leads, cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap) |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; connects to output rail or filter capacitor positive; blocks 200V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance without hermetic sealing; eliminates need for conformal coating in humid environments |
| Super fast recovery (35ns) | Reduces reverse recovery charge (Qrr) and associated switching loss vs. standard fast rectifiers, improving efficiency in 200–500 kHz converters |
| Moisture sensitivity level 1 | Enables unlimited floor life before reflow; eliminates bake requirements and simplifies SMT line logistics |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive; supports eco-compliant industrial and consumer product certifications |
| Low RθJL (15°C/W) | Permits direct thermal coupling to PCB copper; achieves >1.5W power dissipation with only 5mm × 5mm 2-oz Cu pad |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 2A, 12V-output flyback or forward converters operating at 250 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 0.91V VF minimizes conduction loss; 35ns trr prevents shoot-through in synchronous designs and reduces EMI generation. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive current during high-side switch off-time. Use Value: 50A IFSM handles peak inductive kick; 200V VRRM safely clamps transients in 24V–48V systems. |
| High-Frequency AC-DC Adapter | Industrial Power Supply Snubber Network |
Use Scenario: Output rectifier in compact 24W USB-PD adapter with 200kHz+ switching frequency. IC Role / Device Role / Timing Role: High-efficiency, low-profile rectifier replacing axial-leaded devices in space-constrained adapters. Use Value: SMAF package enables automated placement; 0.035g weight and 1.2mm height support ultra-thin form factors. | Use Scenario: Clamp diode in RCD snubber network across MOSFETs in 1–3kW industrial SMPS. IC Role / Device Role / Timing Role: Fast turn-off suppresses voltage overshoot during MOSFET turn-off transitions. Use Value: 35ns trr ensures rapid voltage clamping; 150°C TJMAX sustains reliability under repeated snubber stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R02UFY | 2A, 200V, 30ns trr, TO-277 package (larger footprint, higher RθJA) | Higher thermal resistance (RθJA ≈ 110°C/W) requires larger PCB copper area for same power dissipation | Prefer when board layout allows TO-277 and faster trr is critical; avoid if SMAF footprint or moisture level 1 is required |
| MBR220LSFT1G | 2A, 200V Schottky, 0.52V VF, but limited to 125°C TJMAX and no VRRM > 100V rating | Lower VF improves light-load efficiency but cannot replace ES2DAF-T in 200V blocking applications | Select only for <100V circuits where ultra-low VF outweighs temperature and voltage limitations |
Compared with STTH2R02UFY and MBR220LSFT1G, the ES2DAF-T uniquely balances 200V blocking, 35ns speed, SMAF compactness, and 150°C operation-making it optimal for space-constrained, thermally demanding 200V industrial DC-DC outputs.
Availability
ES2DAF-T is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and high-frequency AC-DC adapter designs requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for ES2DAF-T 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 computing markets.
The ES2DAF-T belongs to TSC's ES2x series of super fast rectifiers, engineered specifically for high-frequency, high-reliability power conversion in compact SMT-based industrial power supplies and adapters.
FAQ
What is the maximum junction temperature rating for ES2DAF-T?
The ES2DAF-T has a maximum junction temperature (TJMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating enables reliable operation in enclosed industrial enclosures or near heat-generating components. Derating begins above 75°C ambient, and the device maintains full 2A current capability up to 100°C case temperature when mounted on a 5mm × 5mm 2-oz copper pad. Thermal design must respect RθJL = 15°C/W to avoid exceeding TJMAX.
Does ES2DAF-T support lead-free reflow soldering?
Yes, ES2DAF-T supports lead-free reflow soldering per J-STD-002. Its matte tin-plated leads are qualified for peak reflow temperatures up to 260°C (JEDEC Level 1), and the device carries moisture sensitivity level 1 per J-STD-020-meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to assembly. No special handling or dry-pack requirements apply.
How does the reverse recovery time of ES2DAF-T compare to standard fast rectifiers?
The ES2DAF-T has a specified reverse recovery time (trr) of ≤35ns under IF = 0.5A, IR = 1.0A, and Irr = 0.25A conditions-significantly faster than standard fast rectifiers (typically 50–100ns). This enables reduced switching loss and lower EMI in converters operating above 200kHz. Unlike standard fast types, its super fast recovery is achieved via optimized doping and lifetime control, not just process scaling.
Is ES2DAF-T pin-compatible with other devices in the ES2xAF-T family?
Yes, all ES2xAF-T variants-including ES2DAF-T, ES2GAF-T, and ES2JAF-T-share identical SMAF package dimensions, pinout, polarity marking (cathode band), and mechanical footprint. They differ only in VRRM (200V/400V/600V), forward voltage, and junction capacitance. This allows voltage-scaling design reuse without PCB layout changes, provided thermal and electrical margins are validated per variant.
What is the typical forward voltage of ES2DAF-T at elevated temperature?
At 2A forward current and 125°C junction temperature, the ES2DAF-T exhibits a typical forward voltage (VF) of 0.78V, with a maximum of 0.89V per electrical specifications. This negative temperature coefficient improves thermal stability in parallel configurations and reduces conduction loss at high ambient temperatures-unlike Schottky diodes, which degrade rapidly above 125°C.
ES2DAF-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 27pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAF
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES2DAF-T FAQ
1.How can I place an order for ES2DAF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ES2DAF-T 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 ES2DAF-T reliable?
The price and inventory of ES2DAF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES2DAF-T is usually 5 days.
3.What payment methods are accepted for ES2DAF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES2DAF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES2DAF-T?
ES2DAF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES2DAF-T 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 ES2DAF-T?
For technical support, including ES2DAF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES2DAF-T requirements.
6.How does Aetrix verify that ES2DAF-T is sourced from the original manufacturer or authorized distributors?
All ES2DAF-T 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 ES2DAF-T meets industry standards.
7.What is the process for return or replacement of ES2DAF-T?
All ES2DAF-T units undergo pre-shipment inspection (PSI). If there is an issue with ES2DAF-T, 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 ES2DAF-T part is unused and in its original packaging.
Return procedure for ES2DAF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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