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Taiwan Semiconductor Corporation ESH2CA
- Part No.:
- ESH2CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
ESH2CA.pdf
- Description:
- DIODE GEN PURP 150V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
ESH2CA from Taiwan Semiconductor is a 1 A, 150 V ultra-fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 25 ns reverse recovery time, 0.9 V max 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 ESH2CA datasheet, ESH2CA pinout, ESH2CA application, or ESH2CA equivalent, key selection criteria include verified VRRM = 150 V, trr ≤ 25 ns, RθJA = 75 °C/W, moisture sensitivity level 1, and RoHS/halogen-free compliance per IEC 61249-2-21.
Technical Context
The ESH2CA is a single-die, planar-junction ultra-fast rectifier optimized for high-frequency switching applications. Its 25 ns reverse recovery time and low 0.9 V forward voltage drop minimize conduction and switching losses in SMPS topologies.
Thermally rated for TJ = –55°C to +175°C with RθJL = 20 °C/W and RθJA = 75 °C/W, it supports reliable operation under transient surge conditions up to 50 A (8.3 ms half-sine) and avalanche energy of 20 mJ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or snubber clamp circuits |
| trr | 25 ns - ultra-fast recovery enables use in >100 kHz switching converters without excessive switching loss |
| VF @ 1 A | ≤ 0.9 V - low conduction loss improves power stage efficiency and reduces thermal load on PCB |
| IFSM | 50 A - withstands high-current transients during startup or fault conditions in industrial power supplies |
| RθJA | 75 °C/W - thermal resistance enables 1 A continuous operation on standard FR-4 with minimal copper area |
| CJ | 25 pF @ 4 V - low junction capacitance minimizes capacitive coupling noise in high-dv/dt environments |
| IR @ 150 V | ≤ 1 µA @ 25°C - ensures low leakage in high-impedance hold-up or sensing paths |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band. Matte tin-plated leads, J-STD-002 solderable, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry terminal | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap) |
| Cathode (K) | Current exit terminal | Connected to output rail or snubber network; polarity marked by visible cathode band on body |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery (trr ≤ 25 ns) | Enables efficient operation in high-frequency DC-DC converters (>200 kHz) with minimal reverse recovery loss |
| Low VF (≤ 0.9 V @ 1 A) | Reduces conduction loss by ~15% vs. standard fast rectifiers, lowering thermal stress on compact layouts |
| High IFSM (50 A) | Supports robust start-up and overload handling in industrial 24 V/48 V power systems without derating |
| MSL Level 1 & RoHS/halogen-free | Eliminates bake requirements before reflow and meets global environmental compliance for automotive and medical-adjacent designs |
Applications
| DC-DC Converter | Snubber Circuit |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V/24 V flyback or forward converters operating at 100–300 kHz. IC Role / Device Role / Timing Role: Ultra-fast unidirectional current path; blocks reverse voltage during MOSFET off-time while minimizing recovery tail current. Use Value: 25 ns trr prevents cross-conduction loss and reduces EMI generation compared to standard fast rectifiers. | Use Scenario: RC/RCD snubber across MOSFET or IGBT switches in motor drives and inverters. IC Role / Device Role / Timing Role: Clamps voltage spikes during turn-off by conducting stored inductive energy into the snubber capacitor. Use Value: 150 V VRRM and 50 A IFSM ensure reliable clamping under repeated 600 V+ switching transients. |
| Lighting Application | Freewheeling Diode |
Use Scenario: Output rectification in LED driver power supplies with PWM dimming and high-frequency operation. IC Role / Device Role / Timing Role: Provides low-loss current path during switch off-cycle; handles pulsed LED loads with minimal thermal rise. Use Value: 0.9 V VF maintains high efficiency at partial-load conditions typical in dimmed LED systems. | Use Scenario: Freewheeling path for inductive loads such as solenoids, relays, and DC motor windings in industrial control modules. IC Role / Device Role / Timing Role: Sustains current continuity when driving transistor turns off, preventing voltage overshoot. Use Value: 175 °C TJMAX and 20 mJ avalanche energy rating allow safe dissipation of stored inductive energy without failure. |
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 | VRRM = 600 V, trr = 35 ns, VF = 1.15 V @ 1 A | Higher voltage rating but slower recovery and higher conduction loss | Preferred where 600 V blocking is required; less optimal for >150 kHz due to higher trr |
| ES1D | VRRM = 200 V, trr = 35 ns, VF = 0.95 V @ 1 A, DO-214AC | Near-identical package and current rating, but 35 ns recovery limits high-frequency efficiency | Suitable for cost-sensitive 200 V designs where 25 ns trr is not critical |
Compared with STTH1R06 and ES1D, the ESH2CA delivers superior high-frequency efficiency via its 25 ns trr and 0.9 V VF, making it optimal for compact, thermally constrained 100–200 V SMPS where switching loss dominates thermal design.
Availability
ESH2CA is available at Aetrix Electronics and suitable for DC-DC converters, lighting drivers, snubber networks, and freewheeling circuits requiring stable component supply, long-term manufacturability, and full RoHS/halogen-free compliance.
Supply support for ESH2CA 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 ESH2CA belongs to TSC's ESH2x ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies where low trr, low VF, and robust surge capability are essential.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the ESH2CA?
The ESH2CA has a maximum repetitive peak reverse voltage (VRRM) of 150 V, as specified in the Absolute Maximum Ratings table. This value defines the highest reverse voltage the device can block continuously without breakdown and is validated per JEDEC test conditions. The ESH2CA is part of a family spanning 100 V (ESH2BA) to 200 V (ESH2DA), with ESH2CA positioned for mid-range 150 V applications such as 48 V industrial power rails and universal input offline SMPS secondaries.
What is the reverse recovery time (trr) of the ESH2CA and how is it measured?
The ESH2CA has a reverse recovery time (trr) of ≤ 25 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC standards. This ultra-fast recovery enables minimal switching loss in high-frequency converters. The ESH2CA's trr is confirmed in the Electrical Specifications table and validated using the test circuit shown in Figure 6 of the official TSC datasheet F2102.
Is the ESH2CA RoHS and halogen-free compliant?
Yes, the ESH2CA is RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the FEATURES section and confirmed in the Mechanical Data table. The device uses halogen-free molding compound and matte tin-plated leads, meeting both environmental and reliability requirements for modern industrial and lighting applications.
What is the thermal resistance from junction to ambient (RθJA) for the ESH2CA?
The ESH2CA has a junction-to-ambient thermal resistance (RθJA) of 75 °C/W under standard JEDEC test conditions (single-layer 1 in² copper pad on FR-4). This value is listed in the Thermal Performance table and supports 1 A continuous operation without forced airflow in typical PCB layouts. RθJL is 20 °C/W, indicating effective heat transfer to the PCB pad through the leads.
What packaging and reel quantity is available for the ESH2CA?
The ESH2CA is supplied in DO-214AC (SMA) package on 7,500-piece tape-and-reel format, as specified in the Ordering Information table. The marking code "ESH2CA" appears on the device body, and the date code follows standard TSC conventions (e.g., YW format). No alternate packaging options (e.g., bulk or ammo pack) are listed in the official documentation.
ESH2CA 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):
- 150 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
ESH2CA FAQ
1.How can I place an order for ESH2CA through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH2CA 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 ESH2CA reliable?
The price and inventory of ESH2CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH2CA is usually 5 days.
3.What payment methods are accepted for ESH2CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH2CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH2CA?
ESH2CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH2CA 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 ESH2CA?
For technical support, including ESH2CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH2CA requirements.
6.How does Aetrix verify that ESH2CA is sourced from the original manufacturer or authorized distributors?
All ESH2CA 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 ESH2CA meets industry standards.
7.What is the process for return or replacement of ESH2CA?
All ESH2CA units undergo pre-shipment inspection (PSI). If there is an issue with ESH2CA, 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 ESH2CA part is unused and in its original packaging.
Return procedure for ESH2CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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