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

Taiwan Semiconductor Corporation ES1G-T

Name: ES1G-T
Brand: Taiwan Semiconductor Corporation
SKU: ES1G-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES1G-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: ES1G-T.pdf

Description:: 35NS, 1A, 400V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:7,012

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Product details

Overview

ES1G-T from Taiwan Semiconductor is a 1A, 400V super fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 35ns reverse recovery time, 1.30V max forward voltage at 1A/25°C, and 30A peak surge current capability. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.

For engineers reviewing the ES1G-T datasheet, ES1G-T pinout, ES1G-T application, or ES1G-T equivalent, key selection criteria include repetitive peak reverse voltage (400V), forward voltage drop under load, thermal resistance (R_θJL = 35°C/W), and moisture sensitivity level (MSL 1).

Technical Context

The ES1G-T employs a glass-passivated silicon junction optimized for high-efficiency DC–DC conversion. Its super fast recovery (trr ≤ 35ns) minimizes switching losses in 50kHz–500kHz SMPS topologies, while the single-die DO-214AC construction supports automated placement and reflow soldering per J-STD-002.

Thermal performance is defined by R_θJL = 35°C/W and R_θJA = 85°C/W, enabling 1A continuous operation up to +125°C ambient with minimal heatsinking. Reverse leakage remains ≤5µA at 25°C and ≤100µA at 125°C under rated V_RRM.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse blocking voltage; defines usable input/output voltage range in flyback or boost converters
I_F	1 A - Continuous average forward current; determines steady-state power handling without derating
t_rr	35 ns - Reverse recovery time; enables efficient operation above 200 kHz with low switching loss
V_F (max)	1.30 V @ 1A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal rise in rectification path
R_θJL	35 °C/W - Junction-to-lead thermal resistance; allows direct PCB copper pad heat sinking for compact layouts
I_FSM	30 A - Non-repetitive peak surge current; withstands inrush and transient overloads in AC-DC front ends

Pinout & Package

Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band. Matte tin-plated leads, RoHS and halogen-free compliant.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap)
Cathode	Forward current exit point	Connected to output rail or filter capacitor; polarity band marks this terminal for assembly verification

Key Features

Feature	Design Value
Glass passivated junction	Ensures stable electrical parameters and long-term reliability under humidity and thermal cycling stress
MSL Level 1 rating	Permits unlimited floor life and standard reflow without baking, reducing manufacturing overhead
Super fast 35ns recovery	Reduces reverse recovery charge (Q_rr) and associated switching losses in high-frequency SMPS
UL 94V-0 molding compound	Meets flammability safety requirements for industrial and consumer end-equipment certifications

Applications

DC–DC Converter Output Rectification	Switch-Mode Power Supply Freewheeling
Use Scenario: Secondary-side rectification in isolated 12V/24V DC–DC modules operating at 200–300 kHz. IC Role / Device Role / Timing Role: Unidirectional current steering diode converting transformer AC output to regulated DC. Use Value: 1.30V V_F and 35ns t_rr minimize conduction and switching losses, improving efficiency >92% at full load.	Use Scenario: Freewheeling path across inductive loads in synchronous buck controllers driving motors or solenoids. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during high-side switch off-time. Use Value: Fast recovery prevents voltage overshoot and reduces EMI generation during current commutation.
AC–DC Adapter Secondary Rectifier	LED Driver Constant-Current Loop
Use Scenario: Output rectification in universal-input 5W–15W offline adapters with <10 mm height constraint. IC Role / Device Role / Timing Role: Main output diode in flyback topology, conducting during transformer reset phase. Use Value: DO-214AC footprint enables compact layout; 400V V_RRM accommodates reflected voltage spikes in discontinuous conduction mode.	Use Scenario: Series rectification in constant-current LED driver IC feedback loop or auxiliary bias supply. IC Role / Device Role / Timing Role: Precision current-path diode ensuring stable reference voltage across sense resistor. Use Value: Low 5µA reverse leakage at 25°C maintains accuracy of current-sense amplifier inputs under light-load conditions.

DC–DC Converter Output Rectification

Switch-Mode Power Supply Freewheeling

Use Scenario: Secondary-side rectification in isolated 12V/24V DC–DC modules operating at 200–300 kHz.

IC Role / Device Role / Timing Role: Unidirectional current steering diode converting transformer AC output to regulated DC.

Use Value: 1.30V V_F and 35ns t_rr minimize conduction and switching losses, improving efficiency >92% at full load.

Use Scenario: Freewheeling path across inductive loads in synchronous buck controllers driving motors or solenoids.

IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during high-side switch off-time.

Use Value: Fast recovery prevents voltage overshoot and reduces EMI generation during current commutation.

AC–DC Adapter Secondary Rectifier

LED Driver Constant-Current Loop

Use Scenario: Output rectification in universal-input 5W–15W offline adapters with <10 mm height constraint.

IC Role / Device Role / Timing Role: Main output diode in flyback topology, conducting during transformer reset phase.

Use Value: DO-214AC footprint enables compact layout; 400V V_RRM accommodates reflected voltage spikes in discontinuous conduction mode.

Use Scenario: Series rectification in constant-current LED driver IC feedback loop or auxiliary bias supply.

IC Role / Device Role / Timing Role: Precision current-path diode ensuring stable reference voltage across sense resistor.

Use Value: Low 5µA reverse leakage at 25°C maintains accuracy of current-sense amplifier inputs under light-load conditions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R04U	Same 1A/400V rating; trr = 30ns (slightly faster); VF = 1.25V max; DO-214AC package	Optimized for higher-frequency PFC stages; tighter VF distribution	Preferred where <5ns trr reduction justifies sourcing from STMicroelectronics
MBR140SFT3G	Schottky type; VF = 0.55V max but VRRM = 40V only; incompatible for 400V blocking	Not suitable for primary-side or high-V_R freewheeling; limited to low-voltage DC–DC	Select only for sub-40V output rails where ultra-low VF outweighs voltage limitation

Compared with STTH1R04U, ES1G-T offers broader vendor availability and identical package compatibility but slightly higher VF; versus MBR140SFT3G, ES1G-T provides 10× higher V_RRM at the cost of ~0.75V higher conduction drop-critical for 400V-class systems.

Availability

ES1G-T is available at Aetrix Electronics and suitable for DC–DC converters, switching-mode power supplies, and freewheeling applications requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.

Supply support for ES1G-T 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 management and industrial markets since 1979.

The ES1x-T series targets cost-sensitive, high-volume power conversion applications, delivering optimized trade-offs between speed, voltage rating, and thermal robustness in standardized surface-mount packages.

FAQ

What is the maximum junction temperature rating for ES1G-T?

The ES1G-T has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in enclosed industrial power supplies where ambient temperatures reach +85°C, provided thermal design maintains junction temperature below 150°C using the specified R_θJL = 35°C/W path to PCB copper.

Does ES1G-T have a halogen-free construction?

Yes, ES1G-T is halogen-free according to IEC 61249-2-21, confirmed in the official TSC F2111 datasheet revision. The molding compound contains no brominated or chlorinated flame retardants, supporting compliance with environmental directives in consumer and industrial equipment.

What is the cathode marking convention on ES1G-T?

The cathode of ES1G-T is marked by a distinct molded band on the DO-214AC (SMA) body, aligned with the cathode terminal. This band is visible on the top surface and corresponds to the cathode lead-verified in the "Marking Diagram" section of the TSC F2111 datasheet.

Can ES1G-T replace ES1D-T in a 200V design?

ES1G-T can physically replace ES1D-T in the same DO-214AC footprint, but its 400V V_RRM exceeds the 200V requirement. No electrical harm occurs, though forward voltage is higher (1.30V vs. 0.95V max), potentially increasing conduction loss in low-voltage designs where ES1D-T was optimized.

Is ES1G-T suitable for reflow soldering per J-STD-020?

Yes, ES1G-T is qualified for standard Pb-free reflow soldering per J-STD-020, supported by its MSL Level 1 rating and matte tin-plated leads. The device requires no pre-bake and withstands peak temperatures up to 260°C for ≤60 seconds, as validated in TSC's mechanical and packaging documentation.

ES1G-T 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):: 400 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 1 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

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

ES1G-T FAQ

1.How can I place an order for ES1G-T through Aetrix?

Please submit a Request for Quotation (RFQ) for ES1G-T 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 ES1G-T reliable?

The price and inventory of ES1G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1G-T is usually 5 days.

3.What payment methods are accepted for ES1G-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1G-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES1G-T?

ES1G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES1G-T 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 ES1G-T?

For technical support, including ES1G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1G-T requirements.

6.How does Aetrix verify that ES1G-T is sourced from the original manufacturer or authorized distributors?

All ES1G-T 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 ES1G-T meets industry standards.

7.What is the process for return or replacement of ES1G-T?

All ES1G-T units undergo pre-shipment inspection (PSI). If there is an issue with ES1G-T, 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 ES1G-T part is unused and in its original packaging.

Return procedure for ES1G-T:

1.Submit a request within 90 days.

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

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