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Taiwan Semiconductor Corporation ES1BFS
- Part No.:
- ES1BFS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
ES1BFS.pdf
- Description:
- DIODE GEN PURP 100V 1A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
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Product details
Overview
ES1BFS from Taiwan Semiconductor is a 1 A, 100 V super fast surface-mount rectifier in SOD-128 package, featuring 35 ns reverse recovery time, 0.85 V forward voltage at 1.0 A/25°C, and 30 A surge current capability; used in DC-DC converters and switching-mode power supplies for high-efficiency freewheeling and output rectification.
For engineers reviewing the ES1BFS datasheet, ES1BFS pinout, ES1BFS application, or ES1BFS equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, low-profile SOD-128 thermal performance (RθJL = 28°C/W), 1 A continuous forward current rating, and verified 125°C operating junction temperature.
Technical Context
The ES1BFS is a single-die, glass-passivated silicon PN junction rectifier optimized for high-speed switching with minimal reverse recovery charge. Its 35 ns trr and low junction capacitance (18 pF at 4 V) enable efficient operation in high-frequency SMPS topologies up to several hundred kHz.
Thermally, it delivers RθJL = 28°C/W and RθJA = 67°C/W on a 5 mm × 5 mm Cu pad PCB, supporting reliable 1 A continuous conduction under ambient temperatures up to 75°C without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage before breakdown |
| IF | 1 A - continuous forward current rating at TA = 25°C with derating above 25°C |
| trr | 35 ns - reverse recovery time enabling high-frequency switching with low switching loss |
| VF | 0.85 V @ 1.0 A, 25°C - low forward drop reducing conduction loss and heat generation |
| IFSM | 30 A - non-repetitive surge current handling capability for transient load conditions |
| TJ max | +150°C - maximum junction temperature defining safe thermal operating envelope |
| CJ | 18 pF @ 1 MHz, 4 V - low junction capacitance minimizing capacitive coupling and EMI in fast-switching nodes |
Pinout & Package
Package: SOD-128 - low-profile, surface-mount plastic package with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 rated molding compound, and cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; accepts input current during conduction phase |
| Cathode | Forward current exit point / reverse voltage terminal | Marked by band; connects to higher-potential node; blocks reverse current up to 100 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability and humidity resistance in industrial environments |
| Low profile SOD-128 package | Enables compact PCB layouts and compatibility with automated SMT assembly processes |
| RθJL = 28°C/W | Supports efficient heat transfer to PCB copper, reducing need for additional thermal relief |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and environmental regulations for global electronics manufacturing |
| J-STD-002 solderability | Ensures robust lead wetting and joint integrity during reflow soldering |
Applications
| DC–DC Converters | Switching Mode Inverters |
|---|---|
Use Scenario: Secondary-side synchronous rectification in isolated buck-boost or flyback converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Freewheeling diode providing unidirectional current path during switch off-time. Use Value: 35 ns trr minimizes reverse recovery loss, improving efficiency by ~1.2% over standard fast rectifiers at 250 kHz. | Use Scenario: Output rectification in solar microinverters with 100 V DC input bus. IC Role / Device Role / Timing Role: High-speed output rectifier handling bidirectional energy flow during inversion cycles. Use Value: 100 V VRRM and 1 A IF support continuous operation under partial shading and transient overvoltage events. |
| Freewheeling Circuits | Industrial Power Supplies |
Use Scenario: Inductive load snubbing in relay drivers and solenoid controllers. IC Role / Device Role / Timing Role: Clamp diode suppressing inductive kickback across MOSFET/BJT switches. Use Value: 30 A IFSM withstands short-duration back-EMF spikes without degradation. | Use Scenario: Input bridge rectification in compact 24 V/48 V industrial PSUs with space-constrained layouts. IC Role / Device Role / Timing Role: Surface-mount primary rectifier replacing through-hole alternatives to reduce board area. Use Value: SOD-128 footprint saves >60% board space vs. DO-214AC while maintaining thermal performance via RθJL = 28°C/W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR110SFT1G | VRRM = 100 V, trr = 50 ns, VF = 0.87 V @ 1 A, same SOD-128 package | Slower recovery increases switching loss in >300 kHz designs | Prefer ES1BFS where trr ≤ 35 ns is required for efficiency targets |
| Vishay VS-1EWH01-M3/5AT | VRRM = 100 V, trr = 30 ns, VF = 0.92 V @ 1 A, SOD-128 package | Higher VF increases conduction loss at high duty cycles | Prefer ES1BFS when lower forward drop is critical for thermal management |
Compared with MUR110SFT1G and VS-1EWH01-M3/5AT, the ES1BFS offers the optimal balance of ultra-fast recovery (35 ns), lowest forward voltage (0.85 V), and proven thermal resistance (28°C/W), making it preferred for high-density, high-efficiency 100 V rectification where both switching and conduction losses must be minimized.
Availability
ES1BFS is available at Aetrix Electronics and suitable for DC–DC converters, switching mode inverters, and freewheeling circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for ES1BFS 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.
The ES1BFS belongs to TSC's ES1xFS super fast rectifier family, engineered specifically for high-frequency switching power supplies demanding low VF, fast trr, and robust thermal performance in compact SMD packages.
FAQ
What is the maximum repetitive peak reverse voltage rating for ES1BFS?
The ES1BFS has a maximum repetitive peak reverse voltage (VRRM) rating of 100 V, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet Version C2103. This defines the highest reverse-biased voltage the device can block continuously without breakdown under specified thermal conditions.
What is the forward voltage drop of ES1BFS at 1.0 A and 25°C?
The ES1BFS exhibits a typical forward voltage (VF) of 0.85 V at 1.0 A and 25°C, with a maximum of 0.95 V under the same conditions. This value is measured with pulse width = 0.3 ms and is critical for calculating conduction losses in power stage design.
Does ES1BFS have a defined reverse recovery time, and what is its value?
Yes, the ES1BFS specifies a reverse recovery time (trr) of 35 ns maximum, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultra-fast recovery enables efficient operation in high-frequency switching applications such as 250–500 kHz DC–DC converters.
What package type is used for ES1BFS, and what are its key mechanical attributes?
The ES1BFS uses the SOD-128 surface-mount package: low-profile plastic case with matte tin-plated leads, UL 94V-0 flammability rating, J-STD-002 solderability, and moisture sensitivity level 1. Polarity is indicated by a cathode band, and unit weight is approximately 0.028 g.
What is the junction-to-lead thermal resistance (RθJL) of ES1BFS, and how is it measured?
The ES1BFS has a typical junction-to-lead thermal resistance (RθJL) of 28°C/W, measured with the device mounted on a standard 5 mm × 5 mm copper pad PCB per JEDEC test conditions. This parameter directly informs heatsinking requirements and allowable power dissipation in layout design.
ES1BFS 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):
- 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 @ 100 V
- Capacitance @ Vr, F:
- 18pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1BFS FAQ
1.How can I place an order for ES1BFS through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1BFS 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 ES1BFS reliable?
The price and inventory of ES1BFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1BFS is usually 5 days.
3.What payment methods are accepted for ES1BFS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1BFS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1BFS?
ES1BFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1BFS 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 ES1BFS?
For technical support, including ES1BFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1BFS requirements.
6.How does Aetrix verify that ES1BFS is sourced from the original manufacturer or authorized distributors?
All ES1BFS 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 ES1BFS meets industry standards.
7.What is the process for return or replacement of ES1BFS?
All ES1BFS units undergo pre-shipment inspection (PSI). If there is an issue with ES1BFS, 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 ES1BFS part is unused and in its original packaging.
Return procedure for ES1BFS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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