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

Taiwan Semiconductor Corporation ES2DFS

Name: ES2DFS
Brand: Taiwan Semiconductor Corporation
SKU: ES2DFS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES2DFS

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-128

Datasheet:: ES2DFS.pdf

Description:: DIODE GEN PURP 200V 2A SOD128

Quantity:: RFQ Add To RFQ list

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Inventory:5,998

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Product details

Overview

ES2DFS from Taiwan Semiconductor is a 2 A, 200 V super fast surface-mount rectifier in SOD-128 package, featuring 35 ns reverse recovery time, 0.88 V forward voltage at 2 A/25°C, and 50 A surge current capability. It serves as a freewheeling diode or output rectifier in high-frequency DC-DC converters and switching inverters.

For engineers reviewing the ES2DFS datasheet, ES2DFS pinout, ES2DFS application, or ES2DFS equivalent, key selection criteria include its 200 V V_RRM, low 0.88 V V_F at rated current, SOD-128 thermal performance (R_θJL = 24 °C/W), and suitability for compact, high-efficiency power supplies operating up to 150 °C junction temperature.

Technical Context

The ES2DFS uses a single-die, glass-passivated PN junction optimized for fast switching with minimal stored charge. Its 35 ns trr and 28 pF junction capacitance at 4 V enable operation in 100–500 kHz SMPS topologies without excessive switching loss or EMI generation.

Thermally, it leverages the SOD-128 package's low R_θJL (24 °C/W) and R_θJC (14 °C/W) to sustain 2 A continuous current on standard PCB copper pads, supporting reliable operation under transient load conditions up to 120 A peak surge (1 ms).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 200 V-rated DC bus or flyback clamp circuits.
I_F	2 A - Continuous forward current rating; supports sustained conduction in 24–48 V output stages of isolated converters.
t_rr	35 ns - Reverse recovery time; enables efficient operation in high-frequency switching applications without significant tail current loss.
V_F @ 2A/25°C	0.88 V - Forward voltage drop; contributes to <1.76 W conduction loss per device at full load, reducing thermal stress.
R_θJL	24 °C/W - Junction-to-lead thermal resistance; allows direct heat transfer to PCB copper, simplifying thermal design vs. larger packages.
C_J @ 4V	28 pF - Junction capacitance; minimizes capacitive turn-on loss and EMI in hard-switched topologies.

Pinout & Package

ES2DFS is housed in the SOD-128 surface-mount package: low-profile, moisture-sensitive level 1 (J-STD-020), matte tin-plated leads, cathode indicated by band. Weight: 0.028 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter, transformer secondary center-tap).
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail or positive bus; polarity band identifies this terminal for correct PCB orientation.

Key Features

Feature	Design Value
Glass passivated junction	Ensures long-term reliability and stable leakage current (<1 µA at 25°C) under humid or thermally cycled conditions.
Super fast recovery (35 ns)	Reduces switching losses and EMI in high-frequency converters, enabling smaller output filters and higher power density.
SOD-128 low-profile package	Enables ultra-thin power designs (max height 1.1 mm); compatible with automated SMT assembly and reflow profiles.
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and environmental regulations for industrial and consumer end equipment.

Applications

DC-DC Converter Output Rectification	Switching Inverter Freewheeling
Use Scenario: Secondary-side synchronous or diode rectification in isolated 24–48 V output DC-DC converters operating at 200–500 kHz. IC Role / Device Role / Timing Role: Output rectifier conducting during transformer demagnetization phase; handles 2 A continuous forward current with minimal V_F loss. Use Value: 0.88 V V_F at 2 A reduces conduction loss to 1.76 W, lowering heatsink requirements versus slower or higher-V_F alternatives.	Use Scenario: Freewheeling path for inductive loads (e.g., motor windings, solenoids) in half-bridge or full-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during switch off-time; blocks 200 V reverse voltage during active switching. Use Value: 35 ns t_rr prevents reverse recovery shoot-through in bridge legs, improving efficiency and gate drive stability.
AC-DC Adapter Secondary Side	Industrial Power Supply Snubber Clamp
Use Scenario: Output rectification in compact wall adapters and open-frame AC-DC modules delivering ≤2 A at ≤24 V. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at ambient temperatures up to 85°C. Use Value: SOD-128 package with R_θJL = 24 °C/W sustains full 2 A load without forced air, enabling fanless designs.	Use Scenario: Clamp diode in RCD snubber networks across MOSFETs or IGBTs in industrial UPS or motor drives. IC Role / Device Role / Timing Role: Absorbs inductive energy spikes during switch turn-off; must withstand 200 V reverse and recover rapidly. Use Value: 200 V V_RRM and 35 ns t_rr ensure robust clamping without oscillation or secondary breakdown.

DC-DC Converter Output Rectification

Switching Inverter Freewheeling

Use Scenario: Secondary-side synchronous or diode rectification in isolated 24–48 V output DC-DC converters operating at 200–500 kHz.

IC Role / Device Role / Timing Role: Output rectifier conducting during transformer demagnetization phase; handles 2 A continuous forward current with minimal V_F loss.

Use Value: 0.88 V V_F at 2 A reduces conduction loss to 1.76 W, lowering heatsink requirements versus slower or higher-V_F alternatives.

Use Scenario: Freewheeling path for inductive loads (e.g., motor windings, solenoids) in half-bridge or full-bridge inverters.

IC Role / Device Role / Timing Role: Provides low-loss recirculation path during switch off-time; blocks 200 V reverse voltage during active switching.

Use Value: 35 ns t_rr prevents reverse recovery shoot-through in bridge legs, improving efficiency and gate drive stability.

AC-DC Adapter Secondary Side

Industrial Power Supply Snubber Clamp

Use Scenario: Output rectification in compact wall adapters and open-frame AC-DC modules delivering ≤2 A at ≤24 V.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at ambient temperatures up to 85°C.

Use Value: SOD-128 package with R_θJL = 24 °C/W sustains full 2 A load without forced air, enabling fanless designs.

Use Scenario: Clamp diode in RCD snubber networks across MOSFETs or IGBTs in industrial UPS or motor drives.

IC Role / Device Role / Timing Role: Absorbs inductive energy spikes during switch turn-off; must withstand 200 V reverse and recover rapidly.

Use Value: 200 V V_RRM and 35 ns t_rr ensure robust clamping without oscillation or secondary breakdown.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R02	2 A, 200 V, 35 ns trr, TO-220AC package (R_θJA = 50 °C/W), V_F = 0.95 V @ 2 A	Requires heatsink for >1 A continuous; not surface-mountable; higher profile	Choose when through-hole mounting or higher surge margin (I_FSM = 80 A) is required.
MBR2200	2 A, 200 V Schottky, V_F = 0.82 V @ 2 A, but V_RRM derates above 125°C; no reverse recovery	Lower conduction loss but limited to ≤125°C ambient; unsuitable for 150°C junction environments	Choose for lower V_F where temperature is strictly controlled and reverse leakage tolerance is high.

Compared with STTH2R02 and MBR2200, the ES2DFS delivers optimal balance of surface-mount compatibility, 150°C junction rating, and consistent 35 ns recovery-making it preferred for space-constrained, high-temperature industrial DC-DC and inverter designs.

Availability

ES2DFS is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, RoHS-compliant packaging, and high-reliability SOD-128 construction.

Supply support for ES2DFS 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 power rectifiers, TVS diodes, and MOSFETs.

The ES2DFS belongs to TSC's ES2xFS super fast rectifier family, engineered for high-frequency switching power supplies where low V_F, fast t_rr, and robust thermal performance are critical.

FAQ

What is the maximum junction temperature rating for ES2DFS?

The ES2DFS has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows reliable operation in enclosed industrial power supplies where ambient temperatures reach 85°C and internal heating raises junction temperature to its limit. The ES2DFS maintains specified electrical parameters-including 35 ns t_rr and <1 µA I_R-up to this temperature, making it suitable for thermally demanding applications without derating.

Does ES2DFS have a defined pinout or polarity marking?

Yes, ES2DFS uses standard SOD-128 polarity: the cathode is marked by a visible band on the package body, and the anode is the unmarked terminal. This matches JEDEC-standard SOD-128 layout and ensures correct orientation during PCB placement. The device has only two terminals-no hidden pins or internal connections-and the band must align with the cathode pad on the board. Incorrect orientation will result in immediate reverse conduction failure and potential circuit damage.

What is the reverse recovery time (t_rr) of ES2DFS and how is it measured?

The ES2DFS reverse recovery time is 35 ns, measured under standardized conditions: I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A, per the Taiwan Semiconductor datasheet. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. Unlike average or typical values, this 35 ns is the maximum guaranteed t_rr across temperature and production lot, ensuring consistent timing behavior in critical power stage designs.

How does the forward voltage (V_F) of ES2DFS vary with temperature and current?

The ES2DFS forward voltage decreases with rising junction temperature: at 2 A, V_F is 0.88 V at 25°C but drops to 0.74 V at 125°C. This negative temperature coefficient improves current sharing in parallel configurations and reduces thermal runaway risk. The datasheet specifies both points-0.88 V (25°C) and 0.74 V (125°C)-under pulsed test conditions (PW = 0.3 ms), confirming stable conduction characteristics across the full operating range of the ES2DFS.

Is ES2DFS compliant with RoHS and halogen-free standards?

Yes, ES2DFS is fully RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the Taiwan Semiconductor product documentation. The device uses matte tin-plated leads and a UL 94V-0 molding compound, meeting environmental requirements for industrial, automotive, and consumer electronics. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed threshold limits, and bromine/chlorine content is below 900 ppm-ensuring ES2DFS qualifies for global market access without restriction.

ES2DFS Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-128

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 2 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 200 V

Capacitance @ Vr, F:: 18pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-128

Operating Temperature - Junction:: -55°C ~ 150°C

ES2DFS FAQ

1.How can I place an order for ES2DFS through Aetrix?

Please submit a Request for Quotation (RFQ) for ES2DFS 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 ES2DFS reliable?

The price and inventory of ES2DFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES2DFS is usually 5 days.

3.What payment methods are accepted for ES2DFS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES2DFS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES2DFS?

ES2DFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES2DFS 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 ES2DFS?

For technical support, including ES2DFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES2DFS requirements.

6.How does Aetrix verify that ES2DFS is sourced from the original manufacturer or authorized distributors?

All ES2DFS 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 ES2DFS meets industry standards.

7.What is the process for return or replacement of ES2DFS?

All ES2DFS units undergo pre-shipment inspection (PSI). If there is an issue with ES2DFS, 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 ES2DFS part is unused and in its original packaging.

Return procedure for ES2DFS:

1.Submit a request within 90 days.

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

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