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Taiwan Semiconductor Corporation ESH2BA
- Part No.:
- ESH2BA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
ESH2BA.pdf
- Description:
- DIODE GEN PURP 100V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
ESH2BA from Taiwan Semiconductor is a 1 A, 100 V ultra-fast surface-mount rectifier diode in DO-214AC (SMA) package, featuring 25 ns reverse recovery time, 0.9 V forward voltage at 1 A, and 50 A peak surge current - deployed in DC-DC converters and snubber circuits for high-frequency switching efficiency.
For engineers reviewing the ESH2BA datasheet, ESH2BA pinout, ESH2BA application, or ESH2BA equivalent, key selection criteria include repetitive peak reverse voltage (100 V), ultra-fast trr (25 ns), thermal resistance (RθJL = 20 °C/W), junction temperature range (–55 to +175 °C), and RoHS/halogen-free compliance for industrial power conversion designs.
Technical Context
The ESH2BA is a single-die, planar passivated silicon rectifier optimized for high-frequency operation with ultra-fast recovery (trr ≤ 25 ns under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A). Its low VF (max 0.9 V @ 1 A, 25 °C) and low CJ (25 pF @ 1 MHz, 4 V) minimize conduction and switching losses in SMPS topologies.
Thermally, it supports continuous operation up to TJ = 175 °C with RθJL = 20 °C/W and RθJA = 75 °C/W, enabling compact PCB layouts in space-constrained DC-DC modules. Polarity is marked by cathode band; terminals are matte tin-plated per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling paths |
| IF | 1 A continuous - average forward current rating at TA = 75 °C; sets baseline conduction capability |
| trr | 25 ns - ultra-fast reverse recovery time; reduces switching loss and EMI in >100 kHz converters |
| VF | 0.9 V max @ 1 A, 25 °C - low forward drop improves system efficiency and thermal margin |
| IFSM | 50 A - non-repetitive surge current handling (8.3 ms sine); supports startup/load-dump transients |
| RθJL | 20 °C/W - junction-to-lead thermal resistance; enables direct heat transfer to PCB copper or heatsink |
| Junction Temp | –55 to +175 °C - wide operating range suitable for under-hood or industrial ambient conditions |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration. Cathode indicated by band on body. Matte tin-plated leads, moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode (K) | Forward current exit / reverse blocking terminal | Connected to output rail; polarity band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery (trr ≤ 25 ns) | Enables efficient operation in high-frequency SMPS (>200 kHz) with minimal switching loss and ringing |
| Low forward voltage (VF ≤ 0.9 V @ 1 A) | Reduces conduction loss by ~15% vs. standard fast rectifiers, improving thermal headroom at full load |
| High surge rating (IFSM = 50 A) | Withstands repetitive inrush and fault currents without degradation in lighting or converter applications |
| DO-214AC (SMA) package | Standardized footprint compatible with automated pick-and-place; JEDEC-compliant for reflow reliability |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated end equipment |
Applications
| DC-DC Converter | Snubber Circuit |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during MOSFET off-time; critical for energy transfer timing and voltage regulation. Use Value: 25 ns trr minimizes reverse recovery charge (Qrr), reducing voltage overshoot and EMI generation at switching nodes. | Use Scenario: Clamp diode in RCD snubber networks across power MOSFETs or IGBTs. IC Role / Device Role / Timing Role: Fast turn-off device absorbing inductive energy spike during switch turn-off; defines clamping speed and energy dissipation window. Use Value: Low VF (0.9 V) and high IFSM (50 A) ensure reliable clamping without thermal runaway during repeated transients. |
| Lighting Application | Freewheeling Application |
Use Scenario: Output rectification in LED driver power supplies (e.g., constant-current buck-boost stages). IC Role / Device Role / Timing Role: Main output rectifier delivering regulated DC to LED string; operates continuously under PWM dimming modulation. Use Value: 175 °C max junction temperature and robust thermal resistance (RθJL = 20 °C/W) sustain reliability in thermally dense LED housing environments. | Use Scenario: Inductive load freewheeling path in solenoid drivers, relay coils, or motor control H-bridges. IC Role / Device Role / Timing Role: Provides low-impedance return path for stored inductor current after switch deactivation; defines decay time constant. Use Value: Ultra-fast trr prevents reverse conduction delay, ensuring rapid current decay and precise timing control in closed-loop systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 (STMicroelectronics) | Same 1 A / 600 V rating but higher VF (1.15 V) and slower trr (50 ns); TO-277 package | Better suited for higher-voltage, lower-frequency (<100 kHz) applications where surge robustness outweighs speed | Select ESH2BA when 100 V rating, 25 ns speed, and SMA footprint are required for compact high-frequency designs |
| MBR1100 (ON Semiconductor) | Schottky diode: zero Qrr, VF ≈ 0.8 V, but VRRM = 100 V and TJ max = 125 °C only | Lower loss at low voltages but unsuitable for high-temp or high-dV/dt environments due to leakage and thermal limits | Choose ESH2BA over MBR1100 where junction temperature >125 °C or high dV/dt immunity is needed |
Compared with STTH1R06 and MBR1100, the ESH2BA uniquely balances 100 V rating, 25 ns recovery, 175 °C operation, and SMA packaging - making it optimal for space-constrained, high-frequency, thermally demanding rectification where Schottky leakage or slow recovery would compromise performance.
Availability
ESH2BA is available at Aetrix Electronics and suitable for DC-DC converters, lighting drivers, and snubber circuits requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for ESH2BA 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 devices, and MOSFETs for industrial and consumer markets.
The ESH2BA belongs to TSC's ESH2x ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies where low recovery time and thermal resilience are critical design requirements.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the ESH2BA?
The ESH2BA has a maximum repetitive peak reverse voltage (VRRM) of 100 V, as specified in the Absolute Maximum Ratings table. This value is fixed for the ESH2BA variant and distinguishes it from ESH2CA (150 V) and ESH2DA (200 V). Exceeding 100 V in continuous reverse bias risks avalanche breakdown and permanent damage to the ESH2BA.
Does the ESH2BA have a specified reverse recovery time (trr) and under what test conditions?
Yes, the ESH2BA has a maximum reverse recovery time (trr) of 25 ns, measured under the conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultra-fast recovery is confirmed in the Electrical Specifications section and is critical for minimizing switching losses in high-frequency DC-DC converters using the ESH2BA.
Is the ESH2BA RoHS compliant and halogen-free?
Yes, the ESH2BA is RoHS compliant per EU Directive 2011/65/EU and halogen-free in accordance with IEC 61249-2-21. These environmental qualifications are explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet for the ESH2BA – ESH2DA family.
What is the thermal resistance from junction to lead (RθJL) for the ESH2BA?
The junction-to-lead thermal resistance (RθJL) for the ESH2BA is 20 °C/W, as published in the Thermal Performance table. This parameter reflects the device's ability to conduct heat from the silicon die to the PCB copper via the leads, supporting reliable operation at up to 175 °C junction temperature in the ESH2BA.
What marking code appears on the ESH2BA device body?
The ESH2BA is marked with "ESH2BA" on its body, as confirmed in the Absolute Maximum Ratings table under "Marking code on the device". This exact marking distinguishes it from ESH2CA and ESH2DA variants and ensures traceability and correct identification during assembly and inspection of the ESH2BA.
ESH2BA 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):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 25pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 175°C
ESH2BA FAQ
1.How can I place an order for ESH2BA through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH2BA 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 ESH2BA reliable?
The price and inventory of ESH2BA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH2BA is usually 5 days.
3.What payment methods are accepted for ESH2BA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH2BA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH2BA?
ESH2BA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH2BA 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 ESH2BA?
For technical support, including ESH2BA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH2BA requirements.
6.How does Aetrix verify that ESH2BA is sourced from the original manufacturer or authorized distributors?
All ESH2BA 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 ESH2BA meets industry standards.
7.What is the process for return or replacement of ESH2BA?
All ESH2BA units undergo pre-shipment inspection (PSI). If there is an issue with ESH2BA, 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 ESH2BA part is unused and in its original packaging.
Return procedure for ESH2BA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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