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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation ES2FAHR3G

Name: ES2FAHR3G
Brand: Taiwan Semiconductor Corporation
SKU: ES2FAHR3G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES2FAHR3G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: ES2FAHR3G.pdf

Description:: DIODE GEN PURP 300V 2A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:4,073

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Product details

Overview

ES2FAHR3G from Taiwan Semiconductor is a 2A, 400V super fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 35ns reverse recovery time, 1.30V max forward voltage at 2A/25°C, and 50A peak surge current - deployed in DC-DC converters and snubber circuits for high-frequency switching efficiency.

For engineers reviewing the ES2FAHR3G datasheet, ES2FAHR3G pinout, ES2FAHR3G application, or ES2FAHR3G equivalent, key selection criteria include repetitive peak reverse voltage (400V), thermal resistance (R_θJL = 20°C/W), junction temperature range (–55°C to +150°C), and RoHS/halogen-free compliance for industrial power conversion designs.

Technical Context

This device is a single-die, unidirectional silicon rectifier optimized for high-frequency operation. Its super fast recovery (trr ≤ 35ns) minimizes switching losses in SMPS topologies, while the glass-passivated junction ensures stable performance under thermal cycling and humidity exposure.

The DO-214AC (SMA) package supports automated placement and provides 75°C/W junction-to-ambient thermal resistance. Cathode band polarity marking and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost converter output stages
I_F	2 A continuous - average forward current rating at T_L = 75°C; determines heatsink-free operation in low-power adapters
I_FSM	50 A - non-repetitive surge current capability; enables robustness against line transients and startup inrush
t_rr	35 ns - measured at I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A; critical for minimizing commutation loss in >100 kHz converters
V_F	1.30 V max at I_F = 2A, T_J = 25°C - directly impacts conduction loss and thermal rise in high-duty-cycle applications
R_θJL	20 °C/W - junction-to-lead thermal resistance; enables direct PCB copper pour heat sinking without external heatsinks

Pinout & Package

Package: DO-214AC (SMA), surface-mount, low-profile, moisture sensitivity level 1 per J-STD-020, UL 94V-0 molding compound, cathode indicated by band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter); requires adequate copper area for thermal dissipation
Cathode	Forward current exit / reverse blocking terminal	Marked with band; ties to output rail or snubber network; must maintain clearance from adjacent high-dv/dt traces

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability under humid environments and thermal stress, eliminating need for conformal coating in industrial enclosures
Super fast recovery (35 ns)	Reduces reverse recovery charge (Q_rr) and associated switching loss, enabling higher frequency operation than standard fast rectifiers
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for CE-marked power supplies and lighting systems
Matte tin-plated leads	Guarantees solder joint integrity per J-STD-002; eliminates lead-free solder voiding risks during reflow assembly

Applications

DC-DC Converter	Snubber Circuit
Use Scenario: Secondary-side rectification in isolated 20–60W flyback or forward converters operating at 65–130 kHz. IC Role / Device Role / Timing Role: Unidirectional current steering diode providing low-loss output rectification with minimal reverse recovery tail. Use Value: 35 ns t_rr reduces switching node ringing and EMI generation, improving conducted emissions compliance without added RC damping.	Use Scenario: RCD clamp network across MOSFET drain-source in offline SMPS to absorb leakage inductance energy. IC Role / Device Role / Timing Role: Fast-recovery clamping diode that conducts only during transient voltage spikes, then blocks rapidly to prevent capacitor discharge loss. Use Value: Low Q_rr and 400V V_RRM enable efficient energy transfer to the clamp capacitor with <1.3 V conduction drop at peak clamp current.
Lighting Application	Freewheeling Diode
Use Scenario: Output rectification in LED driver IC-based constant-current supplies for commercial downlights and streetlights. IC Role / Device Role / Timing Role: High-reliability rectifier handling continuous 2A load with thermal cycling over 50,000-hour lifetime. Use Value: 150°C max junction temperature and halogen-free construction support UL Class B insulation systems and extended lumen maintenance.	Use Scenario: Inductive load freewheeling path in solenoid drivers, relay coils, and motor H-bridge outputs. IC Role / Device Role / Timing Role: Provides low-impedance return path for stored inductor energy, preventing voltage overshoot on switching devices. Use Value: 50A I_FSM withstands repeated turn-off surges; 35 ns t_rr avoids cross-conduction in synchronous drive schemes.

DC-DC Converter

Snubber Circuit

Use Scenario: Secondary-side rectification in isolated 20–60W flyback or forward converters operating at 65–130 kHz.

IC Role / Device Role / Timing Role: Unidirectional current steering diode providing low-loss output rectification with minimal reverse recovery tail.

Use Value: 35 ns t_rr reduces switching node ringing and EMI generation, improving conducted emissions compliance without added RC damping.

Use Scenario: RCD clamp network across MOSFET drain-source in offline SMPS to absorb leakage inductance energy.

IC Role / Device Role / Timing Role: Fast-recovery clamping diode that conducts only during transient voltage spikes, then blocks rapidly to prevent capacitor discharge loss.

Use Value: Low Q_rr and 400V V_RRM enable efficient energy transfer to the clamp capacitor with <1.3 V conduction drop at peak clamp current.

Lighting Application

Freewheeling Diode

Use Scenario: Output rectification in LED driver IC-based constant-current supplies for commercial downlights and streetlights.

IC Role / Device Role / Timing Role: High-reliability rectifier handling continuous 2A load with thermal cycling over 50,000-hour lifetime.

Use Value: 150°C max junction temperature and halogen-free construction support UL Class B insulation systems and extended lumen maintenance.

Use Scenario: Inductive load freewheeling path in solenoid drivers, relay coils, and motor H-bridge outputs.

IC Role / Device Role / Timing Role: Provides low-impedance return path for stored inductor energy, preventing voltage overshoot on switching devices.

Use Value: 50A I_FSM withstands repeated turn-off surges; 35 ns t_rr avoids cross-conduction in synchronous drive schemes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar super fast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R04	Same V_RRM (400V), identical DO-214AC package, but t_rr = 30 ns and V_F = 1.35 V max at 2A - slightly faster but higher conduction loss	Preferred where ultra-low recovery charge dominates over forward loss, e.g., resonant LLC secondaries	Select STTH2R04 if trr reduction below 35 ns is critical and thermal margin allows higher V_F
MBR240	Lower V_RRM (40V), Schottky architecture, V_F = 0.53 V max - no reverse recovery but unsuitable above ~100V	Only viable in low-voltage DC-DC outputs (<40V); cannot replace ES2FAHR3G in 400V-rated circuits	Use MBR240 only in sub-40V freewheeling or OR-ing applications; not a functional substitute for 400V blocking

Compared with STTH2R04 and MBR240, ES2FAHR3G delivers optimal balance of 400V blocking, 35 ns recovery, and 1.30 V forward drop - making it the preferred choice for cost-sensitive, thermally constrained 400V industrial SMPS where Schottky limitations preclude MBR240 and marginal t_rr gains do not justify STTH2R04's higher V_F.

Availability

ES2FAHR3G is available at Aetrix Electronics and suitable for DC-DC converters, snubber networks, and lighting applications requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for ES2FAHR3G 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 global power and protection markets since 1979.

The ES2x series is part of TSC's Super Fast Rectifier product line, engineered specifically for high-frequency switching power supplies, LED drivers, and industrial inverters demanding reliable 2A/400V rectification with low thermal resistance and JEDEC-compliant packaging.

FAQ

What is the maximum junction temperature rating for ES2FAHR3G?

The ES2FAHR3G has a maximum junction temperature (T_J) of +150°C and a minimum of –55°C. This rating is validated per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version M2102). Operation beyond this range may cause irreversible degradation. Derating curves in the datasheet define allowable forward current versus lead temperature, ensuring safe thermal design for ES2FAHR3G in continuous-use applications.

Does ES2FAHR3G have RoHS and halogen-free compliance?

Yes, ES2FAHR3G is RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the "Features" section of the Taiwan Semiconductor ES2AA–ES2JA datasheet (Version M2102). The device uses halogen-free molding compound and meets all substance restrictions under EU Directive 2011/65/EU, making it suitable for environmentally regulated end equipment including commercial lighting and industrial power supplies.

What is the reverse recovery time (t_rr) specification for ES2FAHR3G?

The reverse recovery time for ES2FAHR3G is 35 ns maximum, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as specified in the Electrical Specifications table of the Taiwan Semiconductor datasheet. This value applies across the full operating temperature range and is a key differentiator for high-frequency switching efficiency in ES2FAHR3G compared to standard fast rectifiers.

Is ES2FAHR3G compatible with lead-free reflow soldering processes?

Yes, ES2FAHR3G features matte tin-plated leads qualified per J-STD-002 for solderability, supporting standard lead-free reflow profiles (peak temperature up to 260°C). Its moisture sensitivity level is rated at Level 1 per J-STD-020, meaning floor life is unlimited under controlled humidity conditions - eliminating bake requirements before assembly and ensuring robust joint formation for ES2FAHR3G in high-volume SMT lines.

What package type does ES2FAHR3G use, and what are its mechanical identifiers?

ES2FAHR3G uses the DO-214AC (SMA) surface-mount package. Mechanical identifiers include a low-profile molded body meeting UL 94V-0 flammability rating, cathode polarity indicated by a visible band, and a nominal weight of 0.060 g. The package outline and recommended pad layout are documented in the "Package Outline Dimensions" section of the Taiwan Semiconductor ES2AA–ES2JA datasheet (Version M2102).

ES2FAHR3G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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

ES2FAHR3G FAQ

1.How can I place an order for ES2FAHR3G through Aetrix?

Please submit a Request for Quotation (RFQ) for ES2FAHR3G 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 ES2FAHR3G reliable?

The price and inventory of ES2FAHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES2FAHR3G is usually 5 days.

3.What payment methods are accepted for ES2FAHR3G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES2FAHR3G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES2FAHR3G?

ES2FAHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES2FAHR3G 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 ES2FAHR3G?

For technical support, including ES2FAHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES2FAHR3G requirements.

6.How does Aetrix verify that ES2FAHR3G is sourced from the original manufacturer or authorized distributors?

All ES2FAHR3G 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 ES2FAHR3G meets industry standards.

7.What is the process for return or replacement of ES2FAHR3G?

All ES2FAHR3G units undergo pre-shipment inspection (PSI). If there is an issue with ES2FAHR3G, 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 ES2FAHR3G part is unused and in its original packaging.

Return procedure for ES2FAHR3G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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