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Taiwan Semiconductor Corporation ES1FH
- Part No.:
- ES1FH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
ES1FH.pdf
- Description:
- DIODE GEN PURP 300V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
ES1FH from Taiwan Semiconductor is a 1A, 400V super fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 35ns reverse recovery time, 1.30V max forward voltage at 1A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in DC-DC converters and car lighting systems.
For engineers reviewing the ES1FH datasheet, ES1FH pinout, ES1FH application, or ES1FH equivalent, key selection criteria include its 400V VRRM, 30A IFSM, 150°C TJ rating, glass-passivated junction, and J-STD-020 Level 1 moisture sensitivity - all critical for high-efficiency, thermally constrained automotive power designs.
Technical Context
The ES1FH operates as a single-die, unidirectional silicon rectifier with super-fast switching optimized for reduced switching losses in high-frequency power conversion. Its 35ns trr and 18pF junction capacitance at 1MHz/4V support stable operation up to several hundred kHz in flyback and buck-derived topologies.
Designed for automotive environments, the ES1FH meets AEC-Q101 stress test requirements and features matte tin-plated leads compliant with J-STD-002 solderability, JESD201 Class 2 whisker resistance, and UL 94V-0 molding compound - enabling robust automated assembly and long-term field reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe operating range in 24V/48V automotive bus clamp and DC-DC primary-side rectification |
| IF | 1 A continuous - average forward current rating; supports compact thermal design in space-constrained PCB layouts |
| IFSM | 30 A - peak non-repetitive surge current; withstands inrush and transient overloads in automotive load-dump scenarios |
| trr | 35 ns - reverse recovery time; minimizes switching loss and EMI generation in >100 kHz SMPS applications |
| VF | 1.30 V max @ 1A, 25°C - forward voltage drop; directly impacts conduction loss and thermal rise in high-duty-cycle operation |
| RθJA | 85 °C/W - junction-to-ambient thermal resistance; determines required copper area and airflow for thermal management |
| Junction temp | –55°C to +150°C - operational temperature range; enables deployment in under-hood automotive modules |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; 2-terminal configuration (anode and cathode), lead-free matte tin plating, UL 94V-0 molded body, 0.060g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); polarity must align with circuit topology |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; connects to higher-potential rail (e.g., output capacitor positive); defines direction of conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing - eliminates need for additional qualification effort |
| Glass-passivated junction | Enhanced environmental protection against humidity and contamination - improves long-term reliability in harsh under-hood conditions |
| Super-fast 35ns recovery | Reduces reverse recovery charge (Qrr) and associated switching loss - increases system efficiency in high-frequency converters |
| J-STD-020 Level 1 moisture sensitivity | No floor-life limitation or bake requirement before reflow - simplifies SMT line handling and reduces manufacturing overhead |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and EU RoHS directives - supports global environmental compliance and end-of-life recycling requirements |
Applications
| DC-DC Converter | Automotive Lighting |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 12V-to-5V/3.3V buck converters for ADAS ECUs and infotainment modules. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side switch off-time. Use Value: 35ns trr and 1.30V VF reduce conduction and switching losses, improving overall converter efficiency by ~1.2% at 250kHz. | Use Scenario: LED headlamp driver with PWM dimming and overvoltage clamping in 48V mild-hybrid architectures. IC Role / Device Role / Timing Role: Snubber diode absorbing inductive kickback from LED string current regulation MOSFETs. Use Value: 400V VRRM and 30A IFSM ensure reliable suppression of transients exceeding 300V, preventing driver IC damage. |
| Car Interior Control Module | Start-Stop System Power Supply |
Use Scenario: Reverse polarity protection and back-EMF suppression in window lift motor drivers and seat control actuators. IC Role / Device Role / Timing Role: Unidirectional current path isolator and inductive energy recirculator. Use Value: Glass-passivated junction and AEC-Q101 qualification guarantee >15-year lifetime under repeated thermal cycling and vibration exposure. | Use Scenario: Input rectification and hold-up capacitor charging in 12V battery backup supplies for engine control units during cranking. IC Role / Device Role / Timing Role: Primary AC/DC or DC/DC input stage rectifier handling intermittent high-current surges. Use Value: 150°C TJ rating and 85°C/W RθJA allow operation without heatsink in sealed enclosures up to 85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-ES1FH-M3/5BT | Same VRRM (400V), identical DO-214AC package, 35ns trr, but 1.25V max VF @ 1A/25°C (slightly lower conduction loss) | Also AEC-Q101 qualified; tighter VF distribution supports more predictable thermal modeling | Preferred where margin in forward drop is critical; same footprint and assembly process |
| ON Semiconductor MUR140HE3/73 | 400V VRRM, 1A IF, but 50ns trr and 1.3V VF; TO-220AC package (not surface-mount) | Larger thermal mass and through-hole mounting - suited for prototyping or legacy board upgrades, not high-density SMT | Consider only if DO-214AC footprint is unavailable; requires PCB redesign and manual soldering |
Compared with VS-ES1FH-M3/5BT and MUR140HE3/73, the ES1FH offers optimal balance of automotive qualification, SMT compatibility, and 35ns switching speed - making it the preferred choice for new automotive power designs requiring high-frequency efficiency and zero rework risk.
Availability
ES1FH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converters, and start-stop system power supplies requiring stable component supply across extended production lifecycles.
Supply support for ES1FH 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 automotive, industrial, and consumer markets since 1979.
The ES1FH belongs to TSC's AEC-Q101-qualified ES1xH super fast rectifier family, engineered specifically for high-reliability, high-frequency automotive power conversion where low trr, stable VF, and robust packaging are mandatory.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for ES1FH?
The ES1FH has a VRRM of 400 V, meaning it can reliably block up to 400 volts in reverse bias without breakdown. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2112) and applies under standard test conditions (TA = 25°C). The ES1FH is part of the ES1AH–ES1JH series where "F" explicitly denotes the 400V variant.
Is ES1FH qualified for automotive applications?
Yes, ES1FH is AEC-Q101 qualified, as stated in the FEATURES section of the official Taiwan Semiconductor documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - confirming suitability for under-hood and safety-critical automotive subsystems such as lighting and engine control.
What is the forward voltage (VF) specification for ES1FH at rated current?
The ES1FH has a maximum forward voltage of 1.30 V at IF = 1 A and TJ = 25°C, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss for thermal design. At elevated junction temperatures, VF decreases slightly due to semiconductor physics.
Does ES1FH have a defined reverse recovery time (trr)?
Yes, ES1FH has a specified reverse recovery time of 35 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is listed in the Electrical Specifications table and confirms its classification as a super fast rectifier - critical for minimizing switching loss in high-frequency power supplies.
What package type does ES1FH use, and is it RoHS-compliant?
ES1FH uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads and UL 94V-0 molding compound. It is fully RoHS-compliant and halogen-free per IEC 61249-2-21, as documented in the FEATURES section. The device also carries J-STD-020 Level 1 moisture sensitivity - eliminating bake requirements prior to reflow soldering.
ES1FH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 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:
- 5 µA @ 300 V
- Capacitance @ Vr, F:
- 16pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1FH FAQ
1.How can I place an order for ES1FH through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1FH 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 ES1FH reliable?
The price and inventory of ES1FH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1FH is usually 5 days.
3.What payment methods are accepted for ES1FH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1FH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1FH?
ES1FH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1FH 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 ES1FH?
For technical support, including ES1FH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1FH requirements.
6.How does Aetrix verify that ES1FH is sourced from the original manufacturer or authorized distributors?
All ES1FH 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 ES1FH meets industry standards.
7.What is the process for return or replacement of ES1FH?
All ES1FH units undergo pre-shipment inspection (PSI). If there is an issue with ES1FH, 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 ES1FH part is unused and in its original packaging.
Return procedure for ES1FH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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