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Taiwan Semiconductor Corporation ESH1D
- Part No.:
- ESH1D
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
ESH1D.pdf
- Description:
- DIODE GEN PURP 200V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:14,220
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Product details
Overview
ESH1D from Taiwan Semiconductor is a 1A, 200V ultra-fast surface-mount rectifier in DO-214AC (SMA) package, featuring 15 ns reverse recovery time, 0.9 V max forward voltage at 1 A, and 30 A peak surge current capability. It serves as a freewheeling or snubber diode in high-frequency DC/DC converters and switching inverters operating up to 175°C junction temperature.
For engineers reviewing the ESH1D datasheet, ESH1D pinout, ESH1D application, or ESH1D equivalent, key selection criteria include its 200 V repetitive peak reverse voltage rating, ultra-fast 15 ns trr, low-profile SMA package compatibility with automated placement, and J-STD-020 Level 1 moisture sensitivity for reliable reflow processing.
Technical Context
The ESH1D is a single-die, silicon planar ultra-fast recovery rectifier optimized for high-efficiency switching power supplies. Its glass-passivated junction ensures stable performance under thermal cycling, while the matte tin-plated leads meet J-STD-002 solderability requirements.
With a junction-to-lead thermal resistance of 35°C/W and 175°C maximum junction temperature, the ESH1D supports sustained 1 A conduction in compact layouts. Its 16 pF junction capacitance at 4 V reverse bias minimizes switching losses in high-frequency snubber and freewheeling roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or snubber circuits |
| IF | 1 A - Continuous average forward current; sets steady-state power handling in DC/DC output stages |
| trr | 15 ns - Ultra-fast reverse recovery time; reduces switching losses and EMI in >100 kHz converters |
| VF (max) | 0.9 V @ 1 A, 25°C - Low forward drop improves efficiency and thermal margin at rated load |
| RθJL | 35 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pour heat sinking without heatsink |
| IR (max) | 1 µA @ 25°C, 25 µA @ 125°C - Low leakage supports stable operation in high-impedance snubber networks |
Pinout & Package
Package: DO-214AC (SMA), low-profile surface-mount case with cathode band polarity marking and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switch node or inductive load return path in freewheeling configuration |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to positive rail in snubber or output rectification; blocks 200 V reverse |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under thermal stress and humidity exposure in industrial environments |
| Ultra-fast 15 ns trr | Enables efficient operation in 200–500 kHz switching topologies without excessive ringing or loss |
| DO-214AC (SMA) package | Supports high-density automated assembly and meets IPC-7351B footprint standards |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirement prior to reflow, reducing manufacturing cost and cycle time |
| Halogen-free & RoHS compliant | Fulfills IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics compliance |
Applications
| DC/DC Converter Output Rectification | Snubber Network Diode |
|---|---|
Use Scenario: High-frequency isolated DC/DC converter delivering regulated 12 V output from 48 V input. IC Role / Device Role / Timing Role: Output rectifier conducting during transformer secondary conduction phase; handles 1 A average forward current. Use Value: 0.9 V VF and 15 ns trr minimize conduction and switching losses, improving overall converter efficiency above 92%. | Use Scenario: RCD clamp snubber across MOSFET drain-source in a 300 kHz flyback converter. IC Role / Device Role / Timing Role: Fast-recovery diode that resets snubber capacitor before next switching cycle. Use Value: 200 V VRRM withstands reflected voltage spikes; 15 ns trr prevents reverse conduction overlap and clamp energy loss. |
| Freewheeling Diode in Buck Regulator | Lighting Driver Freewheel Path |
Use Scenario: Synchronous buck regulator driving a 1 A LED string with 500 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling path during high-side FET off-time; conducts 1 A triangular current waveform. Use Value: 175°C TJ max and 35°C/W RθJL allow operation without heatsink on 1 oz copper; low VF reduces thermal rise. | Use Scenario: Constant-current LED driver for commercial downlights using inductive storage and PWM dimming. IC Role / Device Role / Timing Role: Freewheeling element during inductor discharge phase in non-synchronous topology. Use Value: 30 A IFSM rating tolerates startup surges and PWM transient currents; low profile SMA fits tight board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02FL | 1 A, 200 V, 12 ns trr, TO-277 package (3-lead, no leadform) | Higher thermal mass but requires different footprint; not compatible with standard SMA land pattern | Select when lower trr is critical and board layout allows TO-277 mounting |
| ES1D-E3/57T | 1 A, 200 V, 35 ns trr, same DO-214AC (SMA) package and pinout | Slower recovery increases switching loss in >250 kHz designs; higher VF (1.7 V typ) | Acceptable for cost-sensitive, lower-frequency (<150 kHz) applications where trr is less critical |
Compared with STTH1R02FL and ES1D-E3/57T, the ESH1D uniquely balances 15 ns trr, SMA compatibility, and 0.9 V VF in a J-STD-020 Level 1 package-making it optimal for space-constrained, high-frequency industrial DC/DC and lighting drivers requiring zero bake and automated placement.
Availability
ESH1D is available at Aetrix Electronics and suitable for DC/DC converters, snubber networks, freewheeling paths, and LED lighting drivers requiring stable component supply and full traceability.
Supply support for ESH1D 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 industrial, computing, and consumer markets since 1979.
The ESH1x series was developed specifically for high-frequency switching power applications demanding ultra-fast recovery, low VF, and robust thermal performance in compact surface-mount packages.
FAQ
What is the maximum repetitive peak reverse voltage rating for ESH1D?
The ESH1D has a maximum repetitive peak reverse voltage (VRRM) rating of 200 V. This value is explicitly specified in the Absolute Maximum Ratings table for the ESH1D variant and defines the highest reverse voltage the device can block repeatedly without breakdown. It is critical for selecting appropriate clamping or rectification margins in 48 V or 100 V bus systems where transient spikes may approach this limit.
What is the reverse recovery time (trr) of ESH1D and under what test conditions is it measured?
The ESH1D has a maximum reverse recovery time (trr) of 15 ns, measured under the conditions IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultra-fast recovery characteristic is confirmed in the Electrical Specifications table and directly enables high-efficiency operation in switching power supplies operating above 200 kHz, where slower diodes would incur significant switching loss and EMI.
Is ESH1D compatible with lead-free reflow soldering processes?
Yes, the ESH1D is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its J-STD-020 moisture sensitivity level is rated Class 1-meaning it can be processed through standard Pb-free reflow profiles (e.g., JEDEC J-STD-020D peak of 260°C) without pre-baking. This simplifies manufacturing for ESH1D-based designs.
What is the thermal resistance from junction to ambient (RθJA) for ESH1D in standard mounting conditions?
The junction-to-ambient thermal resistance (RθJA) for ESH1D is 85°C/W under standard test conditions (JEDEC 51-2, 1 in² copper pad). This value reflects typical PCB-level dissipation without forced airflow or heatsinking. For continuous 1 A operation, this implies ~76°C temperature rise above ambient-well within the 175°C TJ max, assuming ambient stays below 99°C.
Does ESH1D have halogen-free and RoHS-compliant construction?
Yes, the ESH1D is both halogen-free per IEC 61249-2-21 and RoHS compliant per EU Directive 2011/65/EU. These environmental specifications are explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version F2102) and verified in the material declaration documentation for the DO-214AC (SMA) package construction.
ESH1D 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):
- 200 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):
- 15 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 16pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 175°C
ESH1D FAQ
1.How can I place an order for ESH1D through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH1D 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 ESH1D reliable?
The price and inventory of ESH1D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH1D is usually 5 days.
3.What payment methods are accepted for ESH1D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH1D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH1D?
ESH1D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH1D 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 ESH1D?
For technical support, including ESH1D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH1D requirements.
6.How does Aetrix verify that ESH1D is sourced from the original manufacturer or authorized distributors?
All ESH1D 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 ESH1D meets industry standards.
7.What is the process for return or replacement of ESH1D?
All ESH1D units undergo pre-shipment inspection (PSI). If there is an issue with ESH1D, 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 ESH1D part is unused and in its original packaging.
Return procedure for ESH1D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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