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

Taiwan Semiconductor Corporation ES3F

Name: ES3F
Brand: Taiwan Semiconductor Corporation
SKU: ES3F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES3F

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: ES3F.pdf

Description:: DIODE GEN PURP 300V 3A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,862

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Product details

Overview

ES3F from Taiwan Semiconductor is a 400 V repetitive peak reverse voltage, 3 A average forward current super fast recovery surface-mount rectifier in DO-214AB (SMC) package, with 35 ns reverse recovery time and 1.30 V max forward voltage at 3 A, used in high-frequency switching mode power supplies for telecom and computing equipment.

For engineers reviewing the ES3F datasheet, ES3F pinout, ES3F application, or ES3F equivalent, key selection criteria include V_RRM = 400 V, I_F = 3 A, t_rr = 35 ns, V_F ≤ 1.30 V @ 3 A, and thermal resistance R_θJA = 47 °C/W - all critical for efficiency and thermal management in compact DC/DC converters.

Technical Context

The ES3F is a single-die, silicon planar junction super fast rectifier optimized for high-frequency operation up to several hundred kHz. Its 35 ns reverse recovery time minimizes switching losses, while the glass-passivated junction ensures reliability under repeated surge stress.

Designed for surface-mount assembly on PCBs with tape-and-reel packaging (3,000 pcs/reel), it operates across –55°C to +150°C junction temperature range and meets J-STD-020 moisture sensitivity level 1 and JESD 201 class 2 whisker resistance requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback or boost converter output stage
I_F	3 A - continuous average forward current at T_L = 75°C; determines steady-state conduction capability
t_rr	35 ns - measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables high-frequency switching with low recovery loss
V_F	≤1.30 V @ 3 A, 25°C - forward voltage drop directly impacts conduction loss and thermal load in power path
R_θJA	47 °C/W - junction-to-ambient thermal resistance; sets minimum required PCB copper area and airflow for thermal compliance
C_J	30 pF @ 1 MHz, 4 V - junction capacitance affects high-frequency noise coupling and snubber design

Pinout & Package

DO-214AB (SMC) plastic package with matte tin-plated leads, cathode indicated by band. Weight ≈ 0.210 g. UL 94V-0 rated molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit (e.g., transformer secondary center-tap or switch node)
Cathode	Forward current exit point	Connected to output rail or filter capacitor; polarity marked by visible band on body

Key Features

Feature	Design Value
Super fast recovery time	35 ns - reduces switching loss and EMI in >100 kHz SMPS topologies
Glass passivated junction	Enhanced humidity resistance and long-term reliability under thermal cycling
Moisture sensitivity level 1	No bake requirement before reflow; compatible with standard SMT assembly lines
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS directives for green manufacturing

Applications

Telecom AC-DC Adapters	Server VRM Output Rectification
Use Scenario: Secondary-side rectification in 48 V input telecom AC-DC adapters delivering 12 V/20 A output. IC Role / Device Role / Timing Role: Super fast rectifier replacing slower diodes to reduce switching loss and improve efficiency above 200 kHz. Use Value: 35 ns t_rr and 1.30 V V_F lower conduction and recovery losses versus standard FR series, enabling higher power density.	Use Scenario: Output synchronous rectification assist in multiphase buck converters for CPU/GPU VRMs. IC Role / Device Role / Timing Role: Freewheeling diode during high-side FET dead-time in discrete buck stages. Use Value: Low Q_rr and 30 pF C_J minimize reverse recovery charge injection and capacitive ringing during transition.
Industrial PLC Power Supplies	Networking Switch DC-DC Modules
Use Scenario: Input rectification in wide-input (9–36 V_DC) isolated DC-DC modules for programmable logic controllers. IC Role / Device Role / Timing Role: Primary-side bridge rectifier in flyback or forward converter front-end. Use Value: 400 V V_RRM supports 36 V_DC input with safety margin; 100 A I_FSM withstands cold-start surges.	Use Scenario: Isolated auxiliary supply rectification in 10/25/100 GbE switch line cards with tight board space. IC Role / Device Role / Timing Role: High-efficiency output rectifier in miniature 3.3 V/5 V isolated DC-DC modules. Use Value: DO-214AB footprint enables compact layout; 47 °C/W R_θJA allows thermal performance without heatsink in 0.5 W dissipation.

Telecom AC-DC Adapters

Server VRM Output Rectification

Use Scenario: Secondary-side rectification in 48 V input telecom AC-DC adapters delivering 12 V/20 A output.

IC Role / Device Role / Timing Role: Super fast rectifier replacing slower diodes to reduce switching loss and improve efficiency above 200 kHz.

Use Value: 35 ns t_rr and 1.30 V V_F lower conduction and recovery losses versus standard FR series, enabling higher power density.

Use Scenario: Output synchronous rectification assist in multiphase buck converters for CPU/GPU VRMs.

IC Role / Device Role / Timing Role: Freewheeling diode during high-side FET dead-time in discrete buck stages.

Use Value: Low Q_rr and 30 pF C_J minimize reverse recovery charge injection and capacitive ringing during transition.

Industrial PLC Power Supplies

Networking Switch DC-DC Modules

Use Scenario: Input rectification in wide-input (9–36 V_DC) isolated DC-DC modules for programmable logic controllers.

IC Role / Device Role / Timing Role: Primary-side bridge rectifier in flyback or forward converter front-end.

Use Value: 400 V V_RRM supports 36 V_DC input with safety margin; 100 A I_FSM withstands cold-start surges.

Use Scenario: Isolated auxiliary supply rectification in 10/25/100 GbE switch line cards with tight board space.

IC Role / Device Role / Timing Role: High-efficiency output rectifier in miniature 3.3 V/5 V isolated DC-DC modules.

Use Value: DO-214AB footprint enables compact layout; 47 °C/W R_θJA allows thermal performance without heatsink in 0.5 W dissipation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-3EYH04-M3/45	V_RRM = 400 V, I_F = 3 A, t_rr = 35 ns, but DO-221AD (SMA) package - smaller footprint, higher R_θJA = 65 °C/W	Preferred where board space is constrained but thermal headroom exists; not direct footprint replacement	Select if layout allows SMA and thermal design accommodates higher junction rise
ON Semiconductor MUR340G	V_RRM = 400 V, I_F = 3 A, t_rr = 50 ns, DO-201AD package - larger, axial-lead incompatible with SMT automation	Suitable for through-hole prototyping or legacy repair; not suitable for automated SMT production	Choose only for manual assembly or when DO-201AD footprint is fixed in existing design

Compared with VS-3EYH04-M3/45 and MUR340G, the ES3F offers identical V_RRM and t_rr in a standard SMC package with superior thermal performance (R_θJA = 47 °C/W vs. 65 °C/W) and full SMT compatibility - making it optimal for volume production of compact, thermally demanding power supplies.

Availability

ES3F is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server VRM auxiliary supplies, and industrial PLC power modules requiring stable component supply, JEDEC-compliant SMT placement, and long-lifecycle availability.

Supply support for ES3F 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 devices, and MOSFETs since 1979.

The ES3F belongs to TSC's ES3x super fast rectifier family, engineered specifically for high-frequency, high-efficiency AC-DC and DC-DC conversion in space-constrained computing and communications infrastructure.

FAQ

What is the maximum junction temperature rating for the ES3F?

The ES3F has a maximum junction temperature (T_J) rating of +150°C, with operational range from –55°C to +150°C. This allows reliable use in high-temperature environments such as enclosed server power supplies or industrial control cabinets. Derating curves in the datasheet define allowable I_F reduction above 75°C lead temperature. The ES3F must be mounted on adequate copper to maintain T_J ≤ 150°C under full load.

Does the ES3F have a specified reverse recovery charge (Q_rr) value?

The ES3F datasheet does not specify Q_rr directly, but provides t_rr = 35 ns under defined test conditions (I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A). Q_rr can be estimated using typical Q_rr/t_rr ratios for TSC's ES3x series, but design-critical applications should validate Q_rr experimentally or consult TSC's application engineering for ES3F-specific characterization data.

Is the ES3F compatible with lead-free reflow soldering profiles?

Yes, the ES3F is fully compatible with lead-free reflow soldering per J-STD-020. Its moisture sensitivity level is rated Class 1, meaning no baking is required prior to reflow. Matte tin-plated leads meet J-STD-002 solderability requirements, and the DO-214AB (SMC) package withstands peak temperatures up to 260°C for 10 seconds. The ES3F has been qualified for standard Pb-free SAC305 reflow profiles.

What is the marking code printed on the ES3F device body?

The ES3F is marked with "ES3F" on the device body, along with a green compound indicator (G), date code (YW), and factory code (F), per TSC's standard DO-214AB marking diagram. The cathode is identified by a distinct band adjacent to the marking. No additional alphanumeric suffixes or revision codes appear on the ES3F unit - the marking is strictly "ES3F" for unambiguous identification in automated optical inspection (AOI) systems.

How does the ES3F's forward voltage compare across temperature?

The ES3F exhibits a negative temperature coefficient for forward voltage: V_F decreases as junction temperature rises. At 3 A and 125°C, V_F is typically ~1.15 V - approximately 0.15 V lower than the 25°C max of 1.30 V. This behavior improves thermal stability in parallel configurations and reduces conduction loss at elevated operating temperatures. The ES3F's V_F vs. T_J curve is documented in Figure 4 of the N2102 datasheet.

ES3F Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 300 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: -

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 300 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

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

ES3F FAQ

1.How can I place an order for ES3F through Aetrix?

Please submit a Request for Quotation (RFQ) for ES3F 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 ES3F reliable?

The price and inventory of ES3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES3F is usually 5 days.

3.What payment methods are accepted for ES3F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES3F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES3F?

ES3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES3F 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 ES3F?

For technical support, including ES3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES3F requirements.

6.How does Aetrix verify that ES3F is sourced from the original manufacturer or authorized distributors?

All ES3F 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 ES3F meets industry standards.

7.What is the process for return or replacement of ES3F?

All ES3F units undergo pre-shipment inspection (PSI). If there is an issue with ES3F, 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 ES3F part is unused and in its original packaging.

Return procedure for ES3F:

1.Submit a request within 90 days.

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

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