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Taiwan Semiconductor Corporation ES3AB
- Part No.:
- ES3AB
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
ES3AB.pdf
- Description:
- 35NS, 3A, 50V, SUPER FAST RECOVE
- Quantity:
- Payment:
- Shipping:
Inventory:3,792
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Product details
Overview
ES3AB from Taiwan Semiconductor is a 3A, 50V super fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 35ns reverse recovery time, 0.86V forward voltage at 3A/25°C, and 100A surge current capability. It serves as a primary output rectifier in high-frequency switching power supplies requiring low conduction loss and fast transient response.
For engineers reviewing the ES3AB datasheet, ES3AB pinout, ES3AB application, or ES3AB equivalent, key selection criteria include its 50V VRRM, 35ns trr, 0.86V VF @ 3A, thermal resistance RθJA = 84°C/W on standard PCB, and SMB package compatibility with automated SMT assembly.
Technical Context
The ES3AB employs a single-die, glass-passivated silicon junction optimized for high-efficiency SMPS operation. Its super fast recovery (trr ≤ 35ns) minimizes switching losses during turn-off, while low forward voltage reduces conduction losses across load ranges.
Thermal performance is defined for mounting on a 10mm × 10mm copper pad: RθJL = 24°C/W enables effective heat transfer to PCB traces, and RθJC = 26°C/W supports localized thermal management in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets safe operating margin for 36V-output SMPS designs. |
| IF | 3 A - Continuous forward current rating; supports sustained 3A DC output in adapters and lighting drivers. |
| trr | ≤35 ns - Reverse recovery time; enables stable operation up to ~500 kHz switching frequency without excessive ringing or EMI. |
| VF @ 3A, 25°C | 0.86 V - Forward voltage drop; yields ~2.6W conduction loss at full load, enabling thermally constrained board layouts. |
| RθJA | 84 °C/W - Junction-to-ambient thermal resistance on standard test board; informs derating curves for ambient temperatures above 50°C. |
| IFSM | 100 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and fault transients in AC/DC front-end stages. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input | Connected to transformer secondary or switch node; accepts up to 3A continuous DC current. |
| Cathode | Forward current output / reverse voltage terminal | Delivers rectified output to filter capacitor; blocks up to 50V reverse voltage with <10µA leakage at 25°C. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling; meets J-STD-020 moisture sensitivity level 1. |
| Super fast recovery (trr ≤ 35ns) | Reduces switching losses and EMI generation in high-frequency converters, improving overall system efficiency. |
| DO-214AA (SMB) package | Enables automated pick-and-place assembly and provides mechanical robustness with UL 94V-0 rated molding compound. |
| Low forward voltage (0.86V @ 3A) | Lowers I²R conduction loss, reducing heatsink requirements and enabling higher power density in space-constrained adapters. |
Applications
| AC/DC Adapters | LED Lighting Drivers |
|---|---|
Use Scenario: 12–24V output, 30–60W wall-mounted AC/DC adapters for consumer electronics. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: 0.86V VF and 35ns trr minimize power loss and improve efficiency >88% at full load. | Use Scenario: Constant-current LED drivers for commercial downlights and panel lights. IC Role / Device Role / Timing Role: Secondary-side synchronous rectification element in flyback or buck-boost topologies. Use Value: Low leakage (<10µA @ 25°C) prevents standby current drift; SMB footprint fits tight board spacing. |
| Switch-Mode Power Supplies | DC-DC Converters |
Use Scenario: 50W–100W open-frame SMPS for industrial control modules. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 3A load with 100A surge tolerance. Use Value: RθJA = 84°C/W allows operation up to 70°C ambient without forced air cooling. | Use Scenario: Isolated 12V-to-5V/3.3V DC-DC modules in networking equipment. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or active-clamp forward converters. Use Value: 50V VRRM provides sufficient margin over 36V reflected voltage; 0.11g weight aids vibration resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L05S | Same 50V VRRM, 3A IF, but trr = 45ns; VF = 0.92V @ 3A; DO-214AA package. | Slightly higher conduction and switching loss; suitable where 10ns slower recovery is acceptable. | Prefer ES3AB when optimizing for lowest trr and VF in high-frequency, efficiency-critical designs. |
| SB350-E3/5BT | 50V VRRM, 3A IF, trr = 35ns, VF = 0.85V @ 3A; same SMB package; RoHS/halogen-free compliant. | Nearly identical electrical specs; minor differences in thermal resistance (RθJA = 75°C/W). | SB350-E3/5BT offers marginally better thermal performance; ES3AB preferred for tighter supply chain alignment with Taiwan Semiconductor. |
Compared with STTH3L05S and SB350-E3/5BT, the ES3AB delivers the lowest combined VF/trr product among 50V 3A SMB rectifiers, making it optimal for high-efficiency, high-frequency SMPS where both conduction and switching losses must be minimized.
Availability
ES3AB is available at Aetrix Electronics and suitable for AC/DC adapters, LED lighting drivers, and switch-mode power supplies requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for ES3AB 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 rectifiers, TVS diodes, MOSFETs, and power ICs.
The ES3AB belongs to TSC's ES3x series of super fast surface-mount rectifiers, designed specifically for high-efficiency, high-frequency switching power conversion in cost-sensitive, high-volume applications.
FAQ
What is the maximum junction temperature rating for the ES3AB?
The ES3AB has a maximum junction temperature (TJ) rating of +150°C, with an operational range from –55°C to +150°C. This allows reliable use in enclosed power supplies where internal board temperatures may exceed 85°C. Thermal derating begins above 25°C ambient, per the forward current derating curve in the ES3AB datasheet. The device maintains specified electrical parameters within this full temperature range.
Does the ES3AB have a cathode marking, and how is polarity identified?
Yes, the ES3AB uses a visible cathode band printed on the body of the DO-214AA (SMB) package to indicate the cathode terminal. This band aligns with standard industry practice and ensures correct orientation during automated placement and manual inspection. The anode is the unmarked end. Polarity identification is critical for proper rectification function and must be verified during PCB layout and assembly.
What is the reverse leakage current specification for the ES3AB at elevated temperature?
The ES3AB specifies reverse leakage current (IR) ≤ 10 µA at rated VRRM = 50V and TJ = 25°C, and ≤ 100 µA at TJ = 125°C. This low leakage supports stable no-load and standby performance in energy-efficient adapters and lighting drivers, minimizing quiescent power loss and preventing capacitor discharge issues in hold-up circuits.
Is the ES3AB compatible with lead-free reflow soldering processes?
Yes, the ES3AB is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the device is rated for moisture sensitivity level 1 (MSL-1) per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH without baking. The package withstands peak reflow temperatures up to 260°C for 10 seconds, supporting standard Pb-free assembly lines.
How does the ES3AB's junction capacitance affect high-frequency performance?
The ES3AB exhibits a typical junction capacitance (CJ) of 46 pF at 1 MHz and 4.0V reverse bias. This low CJ minimizes displacement current during switching transitions, reducing gate drive loading in synchronous rectifier controllers and limiting high-frequency noise coupling. It contributes directly to the device's 35ns trr and supports clean waveform integrity in converters operating above 200 kHz.
ES3AB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 46pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES3AB FAQ
1.How can I place an order for ES3AB through Aetrix?
Please submit a Request for Quotation (RFQ) for ES3AB 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 ES3AB reliable?
The price and inventory of ES3AB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES3AB is usually 5 days.
3.What payment methods are accepted for ES3AB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES3AB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES3AB?
ES3AB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES3AB 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 ES3AB?
For technical support, including ES3AB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES3AB requirements.
6.How does Aetrix verify that ES3AB is sourced from the original manufacturer or authorized distributors?
All ES3AB 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 ES3AB meets industry standards.
7.What is the process for return or replacement of ES3AB?
All ES3AB units undergo pre-shipment inspection (PSI). If there is an issue with ES3AB, 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 ES3AB part is unused and in its original packaging.
Return procedure for ES3AB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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