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

Taiwan Semiconductor Corporation ES1H

Name: ES1H
Brand: Taiwan Semiconductor Corporation
SKU: ES1H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES1H

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: ES1H.pdf

Description:: 35NS, 1A, 500V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ES1H from Taiwan Semiconductor is a 500 V repetitive peak reverse voltage, 1 A average forward current super fast surface-mount rectifier in DO-214AC (SMA) package, with 1.70 V max forward voltage at 1 A and 35 ns reverse recovery time, used for freewheeling and snubber functions in DC-DC converters.

For engineers reviewing the ES1H datasheet, ES1H pinout, ES1H application, or ES1H equivalent, key selection criteria include its 500 V V_RRM, 1.70 V V_F at 1 A, 35 ns t_rr, DO-214AC thermal performance (R_θJL = 35 °C/W), and suitability for high-efficiency switching mode inverters.

Technical Context

The ES1H is a single-die, silicon planar junction super fast recovery rectifier optimized for high-frequency switching applications. Its 35 ns reverse recovery time and low junction capacitance (18 pF at 1 MHz, 4 V) minimize switching losses and EMI generation in power conversion stages.

Designed with glass passivated chip junction and matte tin-plated leads compliant with J-STD-002, the ES1H operates across -55 °C to +150 °C junction temperature range and meets JESD 201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	500 V - supports DC bus voltages up to 350 V RMS in bridge or freewheeling configurations
I_F	1 A continuous - rated for sustained conduction in compact SMPS output stages
V_F (max)	1.70 V @ 1 A, 25 °C - limits conduction loss to ≤1.7 W per device at full load
t_rr	35 ns - enables operation at ≥500 kHz switching frequencies with low recovery loss
C_J	18 pF @ 1 MHz, 4 V - reduces capacitive coupling noise in high-dv/dt gate drive or snubber circuits
R_θJL	35 °C/W - allows direct PCB copper pad heat sinking without heatsink for ≤0.5 W dissipation
I_FSM	30 A @ 8.3 ms - withstands typical inrush and fault currents in 12–48 V DC systems

Pinout & Package

DO-214AC (SMA) surface-mount package with cathode-indicated band; molded epoxy case rated UL 94V-0; matte tin-plated leads; polarity marked by cathode band on body.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry node	Connected to lower-potential side (e.g., switch node in buck freewheel path)
Cathode	Forward current exit node / reverse blocking terminal	Connected to higher-potential rail; cathode band identifies this terminal visually and in layout

Key Features

Feature	Design Value
Super fast recovery (35 ns)	Reduces reverse recovery charge (Q_rr) and associated switching loss in hard-switched topologies
Glass passivated junction	Ensures long-term reliability under humidity and thermal cycling stress per J-STD-020 Level 1
DO-214AC (SMA) footprint	Enables automated pick-and-place assembly and compatibility with standard SMA land patterns
RoHS & halogen-free	Meets IEC 61249-2-21 and global environmental compliance mandates for industrial and consumer end equipment

Applications

DC-DC Converter Output Rectification	Snubber Network Diode
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current conduction path during transformer reset phase; blocks reverse voltage during primary switch ON time. Use Value: 1.70 V V_F minimizes conduction loss; 35 ns t_rr prevents cross-conduction loss with synchronous MOSFETs in quasi-resonant designs.	Use Scenario: RCD snubber across MOSFET drain-source in offline SMPS or motor drives. IC Role / Device Role / Timing Role: Fast clamping diode that conducts transient energy into capacitor during voltage spike events. Use Value: 500 V V_RRM and 35 ns t_rr ensure reliable clamping without oscillation or delayed turn-on during rapid dv/dt transients.
Freewheeling Diode in Buck Regulator	Lighting Driver Freewheel Path
Use Scenario: Low-side freewheeling path in non-synchronous buck regulators powering FPGA core rails or LED drivers. IC Role / Device Role / Timing Role: Provides current continuity path when high-side switch turns OFF; conducts only during OFF-time. Use Value: 1 A I_F rating matches typical buck inductor ripple; DO-214AC thermal resistance supports ambient temperatures up to 85 °C without derating.	Use Scenario: Freewheeling element in constant-current LED driver ICs for architectural or automotive lighting. IC Role / Device Role / Timing Role: Completes inductive current loop during PWM OFF periods; handles repetitive 100–1000 Hz switching. Use Value: 150 °C T_JMAX and 18 pF C_J prevent thermal runaway and capacitive feedthrough in high-density LED modules.

DC-DC Converter Output Rectification

Snubber Network Diode

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24 V at ≤1 A.

IC Role / Device Role / Timing Role: Unidirectional current conduction path during transformer reset phase; blocks reverse voltage during primary switch ON time.

Use Value: 1.70 V V_F minimizes conduction loss; 35 ns t_rr prevents cross-conduction loss with synchronous MOSFETs in quasi-resonant designs.

Use Scenario: RCD snubber across MOSFET drain-source in offline SMPS or motor drives.

IC Role / Device Role / Timing Role: Fast clamping diode that conducts transient energy into capacitor during voltage spike events.

Use Value: 500 V V_RRM and 35 ns t_rr ensure reliable clamping without oscillation or delayed turn-on during rapid dv/dt transients.

Freewheeling Diode in Buck Regulator

Lighting Driver Freewheel Path

Use Scenario: Low-side freewheeling path in non-synchronous buck regulators powering FPGA core rails or LED drivers.

IC Role / Device Role / Timing Role: Provides current continuity path when high-side switch turns OFF; conducts only during OFF-time.

Use Value: 1 A I_F rating matches typical buck inductor ripple; DO-214AC thermal resistance supports ambient temperatures up to 85 °C without derating.

Use Scenario: Freewheeling element in constant-current LED driver ICs for architectural or automotive lighting.

IC Role / Device Role / Timing Role: Completes inductive current loop during PWM OFF periods; handles repetitive 100–1000 Hz switching.

Use Value: 150 °C T_JMAX and 18 pF C_J prevent thermal runaway and capacitive feedthrough in high-density LED modules.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06U (STMicroelectronics)	600 V V_RRM, 1.05 V V_F @ 1 A, 30 ns t_rr, same DO-214AC package	Slightly lower V_F improves efficiency in low-V_OUT designs; tighter t_rr margin for >1 MHz operation	Select when lower conduction loss or higher frequency operation is prioritized over cost
MBR150 (ON Semiconductor)	50 V V_RRM, 0.85 V V_F @ 1 A, Schottky architecture, no reverse recovery	Not suitable for 500 V blocking; limited to ≤35 V DC bus; zero Q_rr eliminates recovery loss entirely	Choose only for low-voltage (<40 V) applications where ultra-low V_F and zero t_rr outweigh voltage limitation

Compared with STTH1L06U, ES1H offers lower cost and sufficient 500 V rating for 375 V DC link use, while MBR150 is not a voltage-compatible alternative but serves distinct low-V_IN niches where Schottky advantages apply.

Availability

ES1H is available at Aetrix Electronics and suitable for DC-DC converter output rectification, snubber networks, freewheeling paths, and lighting driver applications requiring stable component supply and RoHS-compliant discrete diodes.

Supply support for ES1H 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 industrial, computing, and consumer markets since 1979.

The ES1A–ES1J series is part of TSC's Super Fast Rectifier product line, engineered specifically for high-frequency switching power supplies where low recovery time and robust thermal performance are critical.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for ES1H?

The ES1H has a maximum repetitive peak reverse voltage (V_RRM) of 500 V, as specified in the Absolute Maximum Ratings table. This rating ensures reliable blocking capability in applications with DC bus voltages up to approximately 350 V RMS, such as offline SMPS front-end rectification or high-voltage buck-derived outputs. The ES1H datasheet confirms this value applies exclusively to the ES1H marking code.

What is the forward voltage (V_F) of ES1H at 1 A and 25 °C?

The ES1H exhibits a maximum forward voltage (V_F) of 1.70 V at 1 A forward current and 25 °C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and defines worst-case conduction loss-critical for thermal design in compact power stages where the ES1H is commonly deployed.

Does ES1H have a specified reverse recovery time (t_rr)?

Yes, the ES1H has a maximum reverse recovery time (t_rr) of 35 ns, tested at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This parameter is explicitly listed in the Electrical Specifications section and distinguishes ES1H as a "super fast" rectifier suitable for switching frequencies above 300 kHz, unlike standard or fast recovery diodes.

What package type does ES1H use, and what are its key mechanical attributes?

The ES1H uses the DO-214AC (SMA) surface-mount package, confirmed in Mechanical Data and Ordering Information sections. Key attributes include UL 94V-0 rated molding compound, matte tin-plated leads compliant with J-STD-002, cathode polarity indicated by a band, and a weight of approximately 0.060 g. The package supports automated placement and meets JESD 201 Class 2 whisker resistance.

Is ES1H RoHS and halogen-free compliant?

Yes, ES1H is RoHS compliant and halogen-free per IEC 61249-2-21, as stated in the FEATURES section. This compliance is verified for the entire ES1A–ES1J family, including ES1H, and applies to all homogeneous materials in the device-ensuring suitability for export-controlled and environmentally regulated end equipment.

ES1H 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):: 500 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 1 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 500 V

Capacitance @ Vr, F:: 16pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

ES1H FAQ

1.How can I place an order for ES1H through Aetrix?

Please submit a Request for Quotation (RFQ) for ES1H 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 ES1H reliable?

The price and inventory of ES1H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1H is usually 5 days.

3.What payment methods are accepted for ES1H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES1H?

ES1H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES1H 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 ES1H?

For technical support, including ES1H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1H requirements.

6.How does Aetrix verify that ES1H is sourced from the original manufacturer or authorized distributors?

All ES1H 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 ES1H meets industry standards.

7.What is the process for return or replacement of ES1H?

All ES1H units undergo pre-shipment inspection (PSI). If there is an issue with ES1H, 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 ES1H part is unused and in its original packaging.

Return procedure for ES1H:

1.Submit a request within 90 days.

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

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