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Taiwan Semiconductor Corporation ES1BFSH
- Part No.:
- ES1BFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
ES1BFSH.pdf
- Description:
- 35NS, 1A, 100V, SUPER FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:13,990
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Product details
Overview
ES1BFSH from Taiwan Semiconductor is a 1A, 100V super fast surface-mount rectifier diode in SOD-128 package, featuring 35ns reverse recovery time, 0.85V forward voltage at 1.0A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in high-frequency DC/DC converters where low conduction loss and fast switching are critical.
For engineers reviewing the ES1BFSH datasheet, ES1BFSH pinout, ES1BFSH application, or ES1BFSH equivalent, key selection criteria include its 100V VRRM, 30A IFSM surge rating, SOD-128 thermal performance (RθJL = 28°C/W), and AEC-Q101 qualification for under-hood automotive power stages.
Technical Context
This super fast rectifier uses a glass-passivated silicon junction to achieve tight trr control and stable leakage across temperature. Its single-die configuration and low-profile SOD-128 package support automated placement while maintaining thermal integrity via copper-pad mounting.
The device operates over –55°C to +150°C junction range with 1µA max reverse current at 25°C and 20µA at 125°C, enabling reliable operation in thermally demanding automotive and industrial DC/DC topologies requiring fast recovery and low VF trade-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost snubber circuits |
| IF | 1 A continuous - Rated average forward current; supports compact 1A DC/DC output stages without forced cooling |
| trr | 35 ns - Reverse recovery time; enables >1 MHz switching in synchronous rectifier-assisted converters |
| VF @ 1A/25°C | 0.85 V - Forward voltage drop; contributes ~0.85W conduction loss at full load, critical for thermal budgeting |
| RθJL | 28 °C/W - Junction-to-lead thermal resistance; allows direct PCB copper pad heat sinking without heatsink |
| IFSM | 30 A - Non-repetitive surge current (8.3ms); withstands inrush and fault transients in automotive 12V systems |
Pinout & Package
SOD-128 is a low-profile, surface-mount plastic package with two terminals: anode and cathode. Polarity is marked by a visible cathode band on the body. The package meets UL 94V-0 flammability rating and J-STD-020 moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/high-side node in freewheeling path; must handle full load current and surge |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to switching node in buck/flyback; determines voltage stress during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and humidity resistance versus epoxy-passivated alternatives |
| Low profile SOD-128 | Enables high-density layout in space-constrained modules such as ADAS power supplies and ECU DC/DC stages |
| Moisture sensitivity level 1 | Eliminates bake requirement before reflow; supports standard SMT assembly without process modification |
Applications
| Automotive DC/DC Converters | Industrial Freewheeling Diodes |
|---|---|
Use Scenario: Step-down converter in 12V battery management system supplying infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in asynchronous buck topology, conducting during high-side switch off-time. Use Value: 35ns trr minimizes reverse recovery loss; 0.85V VF reduces conduction loss at 1A, improving efficiency by ~0.5% vs. standard FR diodes. | Use Scenario: Flyback snubber network in industrial PLC power supply handling 24V–48V input. IC Role / Device Role / Timing Role: Snubber diode clamping transformer leakage energy during MOSFET turn-off. Use Value: 30A IFSM withstands transient spikes; 100V VRRM provides margin above 24V rail with safety factor. |
| High-Frequency SMPS | Automotive Lighting Drivers |
Use Scenario: Output rectification in 500kHz isolated DC/DC module for telecom base station control logic. IC Role / Device Role / Timing Role: Secondary-side rectifier synchronously gated or used in self-driven configuration. Use Value: 18pF junction capacitance limits displacement current at 500kHz; low VF maintains <1W dissipation at full load. | Use Scenario: LED current regulation circuit in headlamp driver with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Freewheeling path for inductive current during PWM off-phase in buck-based LED driver. Use Value: AEC-Q101 qualification ensures lifetime reliability under thermal cycling; SOD-128 footprint fits tight LED module layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R01FL | 1A, 100V, 30ns trr, TO-277 package (larger footprint, higher RθJA) | Higher thermal resistance (75°C/W) requires larger copper area; not AEC-Q101 qualified | Prefer when board space allows larger package and automotive qualification is not required |
| ON Semi MUR110E | 1A, 100V, 50ns trr, DO-41 through-hole; no AEC-Q101, higher VF (0.93V) | Through-hole mounting incompatible with automated SMT lines; unsuitable for automotive vibration environments | Select only for legacy through-hole designs where rework cost outweighs performance trade-offs |
Compared with STTH1R01FL and MUR110E, ES1BFSH delivers superior thermal performance in SMT form factor, AEC-Q101 compliance for automotive use, and tighter trr tolerance-making it optimal for high-reliability, high-density 1A rectification where board space and qualification matter.
Availability
ES1BFSH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial freewheeling circuits, and high-frequency SMPS requiring stable component supply, AEC-Q101 qualification, and SOD-128 footprint compatibility.
Supply support for ES1BFSH 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 ES1xFSH series was designed specifically for high-efficiency, high-reliability surface-mount rectification in automotive power systems and industrial switching supplies where fast recovery, low VF, and qualification-grade robustness are mandatory.
FAQ
What is the maximum junction temperature rating for ES1BFSH?
The ES1BFSH has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating enables operation in under-hood automotive environments and enclosed industrial enclosures. Derating curves confirm usable current capacity down to 0.5A at 125°C ambient with proper PCB copper area. The ES1BFSH must be mounted on a minimum 5mm × 5mm Cu pad to achieve thermal specs.
Is ES1BFSH pin-compatible with other devices in the ES1xFSH family?
No-ES1BFSH shares the same SOD-128 package and pinout (anode/cathode) with ES1DFSH, ES1GFSH, and ES1JFSH, but voltage ratings differ: ES1BFSH is rated for 100V VRRM, while others range up to 600V. Substituting higher-voltage variants does not affect pinout but may increase forward voltage and reduce efficiency at low-voltage rails. Always verify VRRM margin for the target application.
Does ES1BFSH require special handling due to moisture sensitivity?
No-ES1BFSH is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and processed using standard reflow profiles without baking. This eliminates pre-reflow dry storage or bake steps, simplifying manufacturing for high-volume SMT lines. The ES1BFSH's matte tin-plated leads also ensure solderability per J-STD-002.
What is the reverse recovery time (trr) specification for ES1BFSH, and under what conditions is it measured?
The ES1BFSH reverse recovery time is specified as 35ns maximum, measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This condition reflects typical switching behavior in buck and flyback converters. The value is guaranteed across temperature (25°C to 125°C) and supports stable operation up to ~1MHz switching frequency. Data sheets confirm this trr is lower than standard FR diodes, reducing switching losses.
Can ES1BFSH be used in place of a Schottky diode in low-VF applications?
ES1BFSH is not a Schottky diode-it is a super fast silicon PN rectifier with 0.85V VF at 1A/25°C, higher than typical Schottky VF (0.3–0.5V). However, its 100V rating and 35ns trr make it suitable where Schottky breakdown voltage is insufficient (e.g., >60V). For 12V–24V systems needing ultra-low VF, a Schottky remains preferable; for 48V+ or automotive 12V with surge immunity needs, ES1BFSH offers better ruggedness and temperature stability than Schottky alternatives.
ES1BFSH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES1BFSH FAQ
1.How can I place an order for ES1BFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for ES1BFSH 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 ES1BFSH reliable?
The price and inventory of ES1BFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1BFSH is usually 5 days.
3.What payment methods are accepted for ES1BFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1BFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES1BFSH?
ES1BFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES1BFSH 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 ES1BFSH?
For technical support, including ES1BFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1BFSH requirements.
6.How does Aetrix verify that ES1BFSH is sourced from the original manufacturer or authorized distributors?
All ES1BFSH 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 ES1BFSH meets industry standards.
7.What is the process for return or replacement of ES1BFSH?
All ES1BFSH units undergo pre-shipment inspection (PSI). If there is an issue with ES1BFSH, 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 ES1BFSH part is unused and in its original packaging.
Return procedure for ES1BFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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