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Taiwan Semiconductor Corporation ES1GAL
- Part No.:
- ES1GAL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
ES1GAL.pdf
- Description:
- DIODE GEN PURP 400V 1A THIN SMA
- Quantity:
- Payment:
- Shipping:
Inventory:48,000
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Product details
Overview
ES1GAL from Taiwan Semiconductor is a 1A, 400V super fast surface-mount rectifier in Thin SMA package, featuring 35ns reverse recovery time, 0.93V typical forward voltage at 1A/25°C, and 16pF junction capacitance. 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 ES1GAL datasheet, ES1GAL pinout, ES1GAL application, or ES1GAL equivalent, key selection criteria include its 400V VRRM, 30A IFSM surge rating, thermal resistance (RθJL = 28°C/W), RoHS/halogen-free compliance, and suitability for automated SMT assembly on thin-profile power supplies.
Technical Context
The ES1GAL uses a glass-passivated single-die silicon junction optimized for super-fast recovery (trr ≤ 35ns), enabling efficient operation in switching frequencies up to several hundred kHz. Its low-profile Thin SMA package supports high-density PCB layouts while maintaining adequate thermal dissipation via copper pad mounting.
Electrical behavior is characterized by temperature-dependent forward voltage (0.77V max at 1A/125°C) and low leakage (≤20µA at 125°C), with junction-to-lead thermal resistance of 28°C/W ensuring stable performance under sustained 1A DC load when properly heatsunk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 400V-rated DC-DC outputs. |
| IF | 1 A - Continuous forward current rating; supports steady-state power delivery in compact converters. |
| trr | ≤35 ns - Reverse recovery time; enables high-frequency switching with minimal switching loss and EMI. |
| VF @ 1A, 25°C | 0.93 V typ / 1.30 V max - Forward voltage drop; directly determines conduction loss (≈0.93W at 1A). |
| CJ | 16 pF - Junction capacitance at 1MHz/4V; impacts high-frequency noise coupling and snubber design. |
| RθJL | 28 °C/W - Junction-to-lead thermal resistance; enables thermal modeling when mounted on 5mm×5mm Cu pad. |
| IFSM | 30 A - Non-repetitive surge current (8.3ms half-sine); withstands startup/load-dump transients. |
Pinout & Package
ES1GAL is housed in a Thin SMA (DO-214AC) surface-mount package with cathode-indicated band marking. The device has two terminals: anode and cathode, with polarity clearly marked by a band on the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to higher-potential node (e.g., switch node or transformer secondary); must handle full forward current and surge. |
| Cathode | Output current exit point | Marked by band; connects to output rail or ground return; carries same current as anode with controlled voltage drop. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances reliability and moisture resistance (MSL Level 1), eliminating need for conformal coating in humid environments. |
| Super-fast recovery (trr ≤ 35ns) | Reduces switching losses and improves efficiency in 100–500 kHz SMPS designs versus standard fast rectifiers. |
| Thin SMA package | 0.029g weight and low profile enable high-density layout and compatibility with automated pick-and-place equipment. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives, supporting environmentally compliant industrial and consumer production. |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 48V-to-12V flyback or forward converters operating at 200–300 kHz. IC Role / Device Role / Timing Role: Unidirectional current path converting high-frequency AC from transformer into regulated DC output. Use Value: Low VF (0.93V) minimizes conduction loss; 35ns trr suppresses reverse recovery ringing and EMI generation. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in H-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET off-time to prevent voltage spikes. Use Value: 400V VRRM safely clamps inductive kickback; 30A IFSM handles transient energy without failure. |
| AC-DC Adapter Secondary Rectifier | Industrial Power Supply Snubber Diode |
Use Scenario: Output rectification in compact 12–24V wall adapters using quasi-resonant or CCM PFC front-end stages. IC Role / Device Role / Timing Role: Converts high-frequency transformer output to stable DC, working in tandem with bulk capacitor and feedback loop. Use Value: Thin SMA footprint saves board space; 16pF CJ reduces capacitive coupling noise into sensitive control circuitry. | Use Scenario: Snubber network diode in flyback or LLC resonant converters where fast turn-off and low leakage are critical. IC Role / Device Role / Timing Role: Blocks reverse voltage during snubber capacitor recharge while conducting forward current during clamp phase. Use Value: ≤20µA IR at 125°C ensures minimal standby power loss; 28°C/W RθJL allows direct thermal coupling to PCB copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L04 | 400V VRRM, 1A IF, 30ns trr, TO-277 package (SMD, but larger than Thin SMA) | Higher thermal mass; requires larger pad area; slightly faster recovery but higher VF (1.15V typ @ 1A) | Prefer when higher surge robustness or legacy footprint compatibility is needed over ultra-thin profile. |
| MBR140 | 40V VRRM, 1A IF, Schottky, 0.55V VF, SMA package | Not suitable for 400V circuits; lower VF but no reverse blocking capability beyond 40V | Only viable in low-voltage (<40V) DC-DC outputs where ultra-low conduction loss outweighs voltage limitation. |
Compared with STTH1L04 and MBR140, ES1GAL delivers optimal balance of 400V blocking, 35ns speed, and Thin SMA form factor-making it uniquely suited for space-constrained, medium-voltage SMPS where Schottky alternatives fail and larger packages increase layout cost.
Availability
ES1GAL 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 and consistent parametric performance across production lots.
Supply support for ES1GAL 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 ES1xAL series was designed specifically for high-efficiency, high-frequency switching power supplies demanding reliable super-fast recovery, low-profile packaging, and strict environmental compliance-targeting compact AC-DC and isolated DC-DC systems.
FAQ
What is the maximum repetitive peak reverse voltage rating for ES1GAL?
The ES1GAL has a maximum repetitive peak reverse voltage (VRRM) rating of 400 V. This value is specified in the Absolute Maximum Ratings table and confirmed across all electrical test conditions. Operating above this voltage risks irreversible junction breakdown. Derating is recommended for reliability in high-temperature or high-humidity environments. The ES1GAL is not rated for 600V operation-that applies only to the ES1JAL variant.
What is the typical forward voltage drop of ES1GAL at 1A and 25°C?
The typical forward voltage drop (VF) of ES1GAL is 0.93 V at 1A forward current and 25°C junction temperature, with a maximum of 1.30 V under the same conditions. This value is measured per the Electrical Specifications table and reflects conduction loss under nominal operating conditions. At elevated temperatures (125°C), VF decreases to 0.77 V max, improving efficiency in thermally stressed designs.
Does ES1GAL have a defined reverse recovery time, and how is it measured?
Yes, ES1GAL has a specified reverse recovery time (trr) of ≤35 ns. It is measured under the condition: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A, using a standardized double-pulse test. This parameter confirms its classification as a super-fast rectifier and directly impacts switching loss and EMI in high-frequency converters. No trr value is provided for conditions outside this test setup.
What package type does ES1GAL use, and what are its mechanical identifiers?
ES1GAL uses the Thin SMA (DO-214AC) surface-mount package. Mechanical identifiers include a cathode band marking, matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and a weight of approximately 0.029 g. The package outline matches TSC's standard Thin SMA drawing, with recommended pad layout provided in the datasheet version C2103.
Is ES1GAL RoHS and halogen-free compliant?
Yes, ES1GAL is RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the FEATURES section of the datasheet and verified in the Materials Declaration. The device contains no brominated flame retardants or chlorine-based compounds above threshold limits, making it suitable for environmentally regulated industrial and consumer electronics production.
ES1GAL 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):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 16pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1GAL FAQ
1.How can I place an order for ES1GAL through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1GAL 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 ES1GAL reliable?
The price and inventory of ES1GAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1GAL is usually 5 days.
3.What payment methods are accepted for ES1GAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1GAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1GAL?
ES1GAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1GAL 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 ES1GAL?
For technical support, including ES1GAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1GAL requirements.
6.How does Aetrix verify that ES1GAL is sourced from the original manufacturer or authorized distributors?
All ES1GAL 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 ES1GAL meets industry standards.
7.What is the process for return or replacement of ES1GAL?
All ES1GAL units undergo pre-shipment inspection (PSI). If there is an issue with ES1GAL, 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 ES1GAL part is unused and in its original packaging.
Return procedure for ES1GAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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