My Inquiry
My Account
Taiwan Semiconductor Corporation ES2FA
- Part No.:
- ES2FA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
ES2FA.pdf
- Description:
- DIODE GEN PURP 300V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:14,631
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ES2FA from Taiwan Semiconductor is a 2 A, 400 V super fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 35 ns reverse recovery time, 1.30 V max forward voltage at 2 A, and 50 A peak surge current - used for snubber networks and freewheeling in DC-DC converters.
For engineers reviewing the ES2FA datasheet, ES2FA pinout, ES2FA application, or ES2FA equivalent, key selection criteria include repetitive peak reverse voltage (400 V), thermal resistance (20 °C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and DO-214AC mechanical compatibility.
Technical Context
The ES2FA is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications. Its super fast recovery (trr ≤ 35 ns) minimizes switching losses in SMPS topologies, while its glass-passivated junction ensures stable operation under thermal cycling and humidity stress.
Designed for surface-mount assembly with matte tin-plated leads, the ES2FA supports automated placement and reflow soldering per J-STD-002. Polarity is indicated by a cathode band, and the device operates across –55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse voltage; defines safe blocking capability in flyback/freewheeling paths |
| IF | 2 A continuous - average forward current rating at TA = 25°C; determines steady-state power handling |
| trr | ≤35 ns - reverse recovery time at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables >100 kHz switching efficiency |
| VF | ≤1.30 V at IF = 2 A, TJ = 25°C - forward voltage drop; directly impacts conduction loss and thermal design |
| RθJL | 20 °C/W - junction-to-lead thermal resistance; enables direct heatsinking via PCB copper pour or lead frame |
| IFSM | 50 A - non-repetitive peak surge current (8.3 ms half-sine); withstands inrush and transient overloads |
| CJ | 20 pF at 1 MHz, VR = 4.0 V - junction capacitance; affects high-frequency noise coupling and EMI filtering |
Pinout & Package
Package: DO-214AC (SMA), low-profile surface-mount case with matte tin-plated leads, UL 94V-0 molding compound, and cathode polarity marked by a band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); must handle full IF and IFSM |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or energy storage node; sustains up to 400 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humidity and thermal stress; eliminates need for conformal coating in industrial environments |
| Super fast recovery (trr ≤ 35 ns) | Reduces switching losses and EMI generation in high-frequency DC-DC converters (>200 kHz) |
| J-STD-020 Level 1 moisture sensitivity | Enables standard SMT reflow without baking; lowers manufacturing cost and cycle time |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21; supports green electronics initiatives and export compliance (e.g., EU WEEE, China RoHS) |
Applications
| DC-DC Converter Output Rectification | Snubber Network Diode |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from transformer to output capacitor; blocks reverse current during MOSFET off-time. Use Value: 35 ns trr and 1.30 V VF minimize conduction and switching losses, improving overall efficiency by ~1.2% vs. standard fast recovery diodes. | Use Scenario: RCD snubber across primary-side MOSFET or transformer winding in offline SMPS. IC Role / Device Role / Timing Role: Clamps voltage spikes during turn-off by conducting transient energy into the snubber capacitor. Use Value: 400 V VRRM and 50 A IFSM ensure robust clamping under worst-case surge conditions without avalanche degradation. |
| Freewheeling Diode in Buck Regulator | Lighting Driver Freewheel Path |
Use Scenario: Low-side freewheeling path in synchronous or non-synchronous buck regulators powering FPGA cores or ASICs. IC Role / Device Role / Timing Role: Provides continuous current path for inductor current when high-side switch is off; prevents voltage reversal across inductor. Use Value: DO-214AC footprint allows compact layout; 20 °C/W RθJL supports thermal management on 2-layer PCBs without heatsinks. | Use Scenario: Current recirculation path in LED driver ICs with inductive boost topology (e.g., automotive headlamp modules). IC Role / Device Role / Timing Role: Conducts LED current during PWM off-phase; handles repetitive 2 A pulses with minimal forward drop. Use Value: 1.30 V VF reduces power dissipation in high-duty-cycle lighting applications, limiting junction temperature rise to <110 °C at 70 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R04 | 400 V VRRM, 2 A IF, trr = 30 ns, VF = 1.35 V, DO-214AC | Slightly faster trr but higher VF; higher RθJA (85 °C/W) | Preferable where ultra-low trr dominates over conduction loss; verify thermal margin in sealed enclosures |
| MBR240 | 40 V VRRM (not 400 V), Schottky, VF = 0.52 V, trr = N/A, DO-214AC | Lower VF but insufficient reverse blocking for 400 V bus applications | Only suitable for ≤40 V output rails; not a functional replacement for ES2FA in 400 V systems |
Compared with STTH2R04 and MBR240, the ES2FA delivers optimal balance of 400 V blocking, 35 ns recovery, and 1.30 V conduction loss in space-constrained industrial and lighting SMPS - whereas STTH2R04 trades higher VF for marginal trr gain, and MBR240 lacks required voltage rating entirely.
Availability
ES2FA is available at Aetrix Electronics and suitable for DC-DC converters, snubber networks, freewheeling circuits, and LED lighting drivers requiring stable component supply and J-STD-020 Level 1 SMT compatibility.
Supply support for ES2FA 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 bipolar transistors.
The ES2FA belongs to TSC's ES2x series of super fast recovery rectifiers, engineered specifically for high-efficiency, high-frequency switching power supplies in industrial, computing, and lighting applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for ES2FA?
The ES2FA has a VRRM of 400 V, meaning it can reliably block reverse voltages up to this level in repetitive operation. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version M2102). Exceeding 400 V may cause irreversible breakdown. The ES2FA is part of the ES2AA–ES2JA family, where 'F' denotes the 400 V grade.
What is the forward voltage (VF) specification for ES2FA at rated current?
The ES2FA exhibits a maximum forward voltage of 1.30 V at 2 A forward current and 25 °C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At elevated temperatures (e.g., 125 °C), VF decreases slightly due to semiconductor physics, but system design should use the 1.30 V max for worst-case loss calculation.
Is ES2FA compatible with lead-free reflow soldering processes?
Yes, the ES2FA is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its DO-214AC package is rated for peak reflow temperatures up to 260 °C. With J-STD-020 Level 1 moisture sensitivity, no pre-baking is required before assembly - simplifying manufacturing flow and reducing cost versus higher-level MSL parts.
What is the reverse recovery time (trr) of ES2FA, and how is it tested?
The ES2FA has a maximum reverse recovery time (trr) of 35 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the test circuit shown in Figure 6 of the datasheet. This parameter reflects the diode's ability to transition from conduction to blocking state, directly impacting switching loss and EMI in high-frequency power converters. The ES2FA's trr is consistent across its operating temperature range.
Does ES2FA have halogen-free and RoHS compliance documentation?
Yes, the ES2FA is certified RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet (Version M2102). The molding compound and plating materials are qualified to meet both environmental standards, supporting compliance for products sold in the EU, China, and other regulated markets. Full declarations are available upon request from Aetrix Electronics.
ES2FA 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):
- 300 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 300 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES2FA FAQ
1.How can I place an order for ES2FA through Aetrix?
Please submit a Request for Quotation (RFQ) for ES2FA 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 ES2FA reliable?
The price and inventory of ES2FA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES2FA is usually 5 days.
3.What payment methods are accepted for ES2FA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES2FA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES2FA?
ES2FA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES2FA 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 ES2FA?
For technical support, including ES2FA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES2FA requirements.
6.How does Aetrix verify that ES2FA is sourced from the original manufacturer or authorized distributors?
All ES2FA 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 ES2FA meets industry standards.
7.What is the process for return or replacement of ES2FA?
All ES2FA units undergo pre-shipment inspection (PSI). If there is an issue with ES2FA, 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 ES2FA part is unused and in its original packaging.
Return procedure for ES2FA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ES2FA Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
