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Taiwan Semiconductor Corporation ES1DAL
- Part No.:
- ES1DAL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
ES1DAL.pdf
- Description:
- DIODE GEN PURP 200V 1A THIN SMA
- Quantity:
- Payment:
- Shipping:
Inventory:29,450
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Product details
Overview
ES1DAL from Taiwan Semiconductor is a 1A, 200V super fast surface-mount rectifier diode in a Thin SMA package, featuring 35ns reverse recovery time, 0.85V forward voltage at 1.0A/25°C, and 30A surge current capability. It serves as a freewheeling or output rectifier in high-frequency DC-DC converters and switching inverters where low conduction loss and fast switching are critical.
For engineers reviewing the ES1DAL datasheet, ES1DAL pinout, ES1DAL application, or ES1DAL equivalent, this page delivers verified electrical parameters, thermal performance data, package dimensions, real-world use cases, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The ES1DAL operates as a single-die, unidirectional silicon rectifier optimized for high-frequency switching power supplies. Its super fast recovery (trr ≤ 35ns) enables efficient operation in 100–500kHz SMPS topologies, while its 200V VRRM rating targets mid-voltage industrial and consumer power stages.
Thermal design is supported by RθJL = 28°C/W and RθJA = 67°C/W on a 5mm × 5mm Cu pad, enabling reliable 1A continuous operation up to +125°C junction temperature without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF(AV) | 1 A - Continuous average forward current under specified thermal conditions |
| IFSM (8.3ms) | 30 A - Peak non-repetitive surge current handling during startup or fault events |
| trr | ≤35 ns - Reverse recovery time enabling minimal switching loss in high-frequency converters |
| VF @ 1A, 25°C | 0.85 V - Forward voltage drop determining conduction loss and thermal load at rated current |
| CJ @ 4V | 18 pF - Junction capacitance affecting high-frequency noise and snubber design |
| TJ max | +150 °C - Maximum junction temperature defining safe operating area and derating envelope |
Pinout & Package
ES1DAL uses the Thin SMA (DO-214AC) surface-mount package: cathode-indicated by a band, matte tin-plated leads, UL 94V-0 molding compound, and moisture sensitivity level 1. Weight is 0.029g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectification path; must handle full IF and IFSM |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or switching node; sustains full VRRM during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable leakage current (<1 µA at 25°C) and long-term reliability under humidity stress |
| Super fast trr ≤ 35 ns | Reduces switching losses and EMI generation in >100 kHz DC-DC converters |
| Thin SMA package | Enables high-density PCB layouts and compatibility with automated SMT placement equipment |
| RθJL = 28°C/W | Allows direct heat transfer to PCB copper, supporting 1A operation without heatsink on standard FR4 |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental compliance requirements for commercial and industrial products |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous or diode rectification in isolated flyback or forward converters delivering 5–24V outputs at up to 1A. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 0.85V VF at 1A minimizes conduction loss; 35ns trr prevents cross-conduction loss during MOSFET dead-time. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings, solenoids) in half-bridge or full-bridge inverters. IC Role / Device Role / Timing Role: Provides low-impedance return path for inductor current during high-side switch off-time. Use Value: 200V VRRM safely clamps inductive kickback; 30A IFSM withstands transient overcurrent during load dump. |
| AC-DC Adapter Secondary Rectifier | Industrial Power Supply Snubber Diode |
Use Scenario: Output rectification in compact wall adapters (e.g., 12V/1A) using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: Converts high-frequency transformer output to low-voltage DC, interfacing directly with bulk capacitor and LDO. Use Value: Thin SMA footprint saves board space; 0.029g weight supports lightweight portable designs. | Use Scenario: Clamp diode in RC snubber networks across IGBTs or MOSFETs in 200–400V industrial drives. IC Role / Device Role / Timing Role: Absorbs turn-off energy spikes and limits dv/dt stress on main switching devices. Use Value: 200V VRRM matches typical bus voltages; 35ns trr ensures fast turn-on before voltage overshoot peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02U | VRRM = 200V, trr = 30ns, VF = 0.92V @ 1A, Thin SMA package | Slightly faster recovery but higher VF increases conduction loss at high ambient temperatures | Preferred where ultra-low trr dominates over thermal budget; verify TJ rise under 1A continuous load |
| ON Semi MUR120 | VRRM = 200V, trr = 35ns, VF = 0.93V @ 1A, DO-41 through-hole package | Through-hole mounting requires manual assembly or wave soldering; not compatible with SMT-only lines | Select only if legacy through-hole production is mandated; otherwise avoid due to assembly incompatibility |
Compared with STTH1R02U and MUR120, ES1DAL offers the lowest VF (0.85V) among 200V super fast rectifiers in Thin SMA, delivering superior thermal efficiency in space-constrained SMT designs-without sacrificing trr performance or requiring layout changes.
Availability
ES1DAL is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching inverter freewheeling, and AC-DC adapter secondary rectification requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for ES1DAL 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 global power, automotive, and industrial markets since 1979.
The ES1xAL series was designed specifically for high-efficiency, high-frequency switching power supplies requiring fast recovery, low VF, and robust surge capability in compact surface-mount packages.
FAQ
What is the maximum junction temperature rating for ES1DAL?
The ES1DAL has a maximum junction temperature (TJ) rating of +150°C, validated per absolute maximum ratings in the official TSC datasheet Version C2103. This allows continuous 1A operation with appropriate PCB copper area and ambient conditions up to +85°C. Derating curves confirm usable current down to zero at +150°C case temperature.
Does ES1DAL have a cathode marking, and how is polarity identified?
Yes, ES1DAL uses a visible cathode band on the body of the Thin SMA package to indicate polarity. The banded end is the cathode terminal, and the opposite end is the anode. This marking complies with JEDEC standards and is clearly shown in the official TSC package outline drawing and marking diagram.
What is the reverse recovery time (trr) specification for ES1DAL, and under what test conditions?
The ES1DAL reverse recovery time is specified as ≤35 ns, measured under conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the TSC Electrical Specifications table. This value is guaranteed maximum and applies across the full operating temperature range from –55°C to +125°C.
Is ES1DAL compliant with RoHS and halogen-free standards?
Yes, ES1DAL is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the TSC datasheet. The device uses matte tin-plated leads and UL 94V-0 molding compound, meeting both environmental and flammability requirements for commercial and industrial end equipment.
What is the junction-to-lead thermal resistance (RθJL) of ES1DAL, and how is it measured?
The junction-to-lead thermal resistance (RθJL) of ES1DAL is 28°C/W, measured with the device mounted on a standard 5mm × 5mm copper pad PCB per JESD51-3. This value enables accurate thermal modeling when the lead is used as a primary heat path-critical for estimating junction temperature rise under 1A DC load without external heatsinking.
ES1DAL 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 18pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1DAL FAQ
1.How can I place an order for ES1DAL through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1DAL 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 ES1DAL reliable?
The price and inventory of ES1DAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1DAL is usually 5 days.
3.What payment methods are accepted for ES1DAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1DAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1DAL?
ES1DAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1DAL 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 ES1DAL?
For technical support, including ES1DAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1DAL requirements.
6.How does Aetrix verify that ES1DAL is sourced from the original manufacturer or authorized distributors?
All ES1DAL 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 ES1DAL meets industry standards.
7.What is the process for return or replacement of ES1DAL?
All ES1DAL units undergo pre-shipment inspection (PSI). If there is an issue with ES1DAL, 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 ES1DAL part is unused and in its original packaging.
Return procedure for ES1DAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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