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

Taiwan Semiconductor Corporation ESH1C

Name: ESH1C
Brand: Taiwan Semiconductor Corporation
SKU: ESH1C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ESH1C

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: ESH1C.pdf

Description:: DIODE GEN PURP 150V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:15,000

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Product details

Overview

ESH1C from Taiwan Semiconductor is a 1A, 150V ultra-fast surface-mount rectifier diode in DO-214AC (SMA) package, designed for high-efficiency switching power supplies and snubber circuits with 15 ns reverse recovery time, 0.9 V max forward voltage at 1 A, and 175°C maximum junction temperature.

For engineers reviewing the ESH1C datasheet, ESH1C pinout, ESH1C application, or ESH1C equivalent, key selection criteria include repetitive peak reverse voltage (150 V), ultra-fast trr (≤15 ns), thermal resistance (R_θJL = 35°C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance per IEC 61249-2-21.

Technical Context

The ESH1C operates as a single-die, unidirectional silicon rectifier optimized for high-frequency DC–DC conversion and freewheeling paths where low conduction loss and rapid turn-off minimize switching losses. Its glass-passivated junction ensures stable performance under thermal cycling and humid environments.

Designed for automated SMT placement, the device features matte tin-plated leads compliant with J-STD-002 solderability and meets JESD 201 Class 2 whisker resistance. Polarity is marked by a cathode band on the DO-214AC body.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in flyback or boost converter output stages
t_rr	≤15 ns - Ultra-fast recovery enables operation up to ~1 MHz without excessive switching loss or ringing
V_F @ 1 A	≤0.9 V - Low forward drop reduces conduction loss and thermal load in 1 A continuous applications
I_FSM	30 A - Withstands 8.3 ms half-sine surge; supports inrush current handling in offline input rectification
R_θJL	35 °C/W - Junction-to-lead thermal resistance enables direct PCB copper pour heat sinking without heatsink
C_J	16 pF @ 4 V - Low junction capacitance minimizes capacitive coupling noise in high-dv/dt snubber networks

Pinout & Package

Package: DO-214AC (SMA), surface-mount, low-profile plastic case with cathode band marking; UL 94V-0 rated molding compound; weight ≈ 0.060 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal during forward conduction	Connected to lower-potential node (e.g., switch node in buck freewheel path)
Cathode	Current exit terminal during forward conduction; marked by band	Connected to higher-potential rail (e.g., output capacitor positive in DC–DC converters)

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable leakage current (<1 µA at 25°C) and long-term reliability under humidity exposure
Ultra-fast t_rr ≤15 ns	Reduces reverse recovery charge (Q_rr) and associated switching loss in >100 kHz topologies
MSL Level 1 rating	Allows unlimited floor life before reflow; no baking required prior to assembly
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing

Applications

DC–DC Converter Output Rectification	Snubber Network Diode
Use Scenario: Used in secondary-side synchronous or asynchronous rectification of isolated flyback or forward converters delivering 5–24 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current steering device providing low-loss, fast-recovery rectification in high-frequency switching paths. Use Value: 0.9 V V_F and 15 ns t_rr reduce conduction + switching losses, improving efficiency by ~1.2% over standard fast rectifiers at 500 kHz.	Use Scenario: Placed across MOSFET drain-source or transformer primary to clamp voltage spikes during turn-off. IC Role / Device Role / Timing Role: Transient energy clamping diode with minimal stored charge to avoid delayed turn-on and oscillation. Use Value: Low Q_rr and 16 pF C_J limit ringback amplitude and duration, suppressing EMI in <100 ns spike events.
Freewheeling Path in Buck Converters	Lighting Driver Freewheel Diode
Use Scenario: Provides return path for inductor current when high-side switch turns off in 12 V input, 3.3–5 V output buck regulators. IC Role / Device Role / Timing Role: Passive freewheeling element completing the inductive current loop during low-side conduction phase. Use Value: R_θJL = 35°C/W allows full 1 A DC operation with ≤45°C junction rise on 100 mm² 2-oz copper pad-no thermal derating needed.	Use Scenario: Used in constant-current LED drivers (e.g., automotive interior lighting) with PWM dimming at 1–20 kHz. IC Role / Device Role / Timing Role: Reverse-biased blocking diode during PWM off-time; conducts freewheel current during on-time transitions. Use Value: MSL Level 1 and −55°C to +175°C T_J rating ensure robustness across automotive cabin temperature extremes and reflow cycles.

DC–DC Converter Output Rectification

Snubber Network Diode

Use Scenario: Used in secondary-side synchronous or asynchronous rectification of isolated flyback or forward converters delivering 5–24 V at ≤1 A.

IC Role / Device Role / Timing Role: Unidirectional current steering device providing low-loss, fast-recovery rectification in high-frequency switching paths.

Use Value: 0.9 V V_F and 15 ns t_rr reduce conduction + switching losses, improving efficiency by ~1.2% over standard fast rectifiers at 500 kHz.

Use Scenario: Placed across MOSFET drain-source or transformer primary to clamp voltage spikes during turn-off.

IC Role / Device Role / Timing Role: Transient energy clamping diode with minimal stored charge to avoid delayed turn-on and oscillation.

Use Value: Low Q_rr and 16 pF C_J limit ringback amplitude and duration, suppressing EMI in <100 ns spike events.

Freewheeling Path in Buck Converters

Lighting Driver Freewheel Diode

Use Scenario: Provides return path for inductor current when high-side switch turns off in 12 V input, 3.3–5 V output buck regulators.

IC Role / Device Role / Timing Role: Passive freewheeling element completing the inductive current loop during low-side conduction phase.

Use Value: R_θJL = 35°C/W allows full 1 A DC operation with ≤45°C junction rise on 100 mm² 2-oz copper pad-no thermal derating needed.

Use Scenario: Used in constant-current LED drivers (e.g., automotive interior lighting) with PWM dimming at 1–20 kHz.

IC Role / Device Role / Timing Role: Reverse-biased blocking diode during PWM off-time; conducts freewheel current during on-time transitions.

Use Value: MSL Level 1 and −55°C to +175°C T_J rating ensure robustness across automotive cabin temperature extremes and reflow cycles.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06U (STMicroelectronics)	V_RRM = 600 V, t_rr = 18 ns, V_F = 1.15 V @ 1 A, DO-214AC	Higher voltage rating suits 400 V PFC front-ends; higher V_F increases loss in low-V_OUT designs	Select when system requires >200 V reverse margin; not recommended for 150 V–optimized layouts due to excess V_RRM overhead
MBR1150 (ON Semiconductor)	Schottky, V_R = 150 V, V_F = 0.82 V @ 1 A, t_rr = N/A (no recovery), DO-214AC	No reverse recovery but limited to ≤150 V; leakage rises sharply above 125°C	Prefer for <125°C ambient, low-noise, zero-recovery applications; avoid in high-temp snubbers where IR doubles at 125°C

Compared with STTH1L06U and MBR1150, the ESH1C delivers optimal balance of 150 V rating, 15 ns t_rr, and 0.9 V V_F for cost-sensitive, thermally constrained 1 A DC–DC and snubber use cases-without over-spec'ing voltage or sacrificing recovery speed.

Availability

ESH1C is available at Aetrix Electronics and suitable for DC–DC converter output rectification, snubber network implementation, and freewheeling applications requiring stable component supply, consistent parametric performance, and full traceability across production lots.

Supply support for ESH1C 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 protection ICs since 1979.

The ESH1x series belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-frequency switching power conversion systems where low Q_rr, tight V_F distribution, and MSL 1 assembly compatibility are critical.

FAQ

What is the maximum repetitive peak reverse voltage rating for ESH1C?

The ESH1C has a specified repetitive peak reverse voltage (V_RRM) of 150 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version F2102). Operating above this voltage risks avalanche breakdown and irreversible junction damage. Designers must maintain ≥20% derating margin in transient-prone applications such as offline AC–DC inputs.

Does ESH1C have a defined reverse recovery time, and what is its typical value?

Yes, the ESH1C specifies a reverse recovery time (t_rr) of ≤15 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This ultra-fast recovery is measured per JEDEC standards and directly supports high-frequency switching topologies. The ESH1C datasheet confirms t_rr is guaranteed not to exceed 15 ns across temperature and production lots.

What package type does ESH1C use, and is it compatible with standard SMA footprints?

The ESH1C uses the DO-214AC (SMA) package, with mechanical dimensions and pad layout fully aligned to industry-standard SMA land patterns. Taiwan Semiconductor provides a suggested pad layout in the datasheet (Page 5, Version F2102), confirming compatibility with IPC-7351B nominal SMA footprint. Cathode polarity is marked by a visible band on the device body.

Is ESH1C suitable for lead-free reflow soldering, and what is its moisture sensitivity level?

Yes, the ESH1C is qualified for lead-free reflow soldering and carries a moisture sensitivity level (MSL) of Level 1 per J-STD-020. This means it has unlimited floor life at ≤30°C/60% RH and requires no baking prior to assembly. Its matte tin-plated leads meet J-STD-002 solderability requirements, ensuring reliable wetting during standard reflow profiles.

What is the maximum forward voltage drop of ESH1C at 1 A and 25°C?

The ESH1C has a maximum forward voltage (V_F) of 0.9 V at I_F = 1 A and T_J = 25°C, as specified in the Electrical Specifications table. This value is tested under pulse conditions (PW = 0.3 ms) and represents the worst-case conduction loss under nominal operating conditions. At elevated junction temperatures, V_F decreases slightly due to negative temperature coefficient of silicon diodes.

ESH1C 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):: 150 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 1 A

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

Reverse Recovery Time (trr):: 15 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 150 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

Operating Temperature - Junction:: -55°C ~ 175°C

ESH1C FAQ

1.How can I place an order for ESH1C through Aetrix?

Please submit a Request for Quotation (RFQ) for ESH1C 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 ESH1C reliable?

The price and inventory of ESH1C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH1C is usually 5 days.

3.What payment methods are accepted for ESH1C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH1C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ESH1C?

ESH1C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ESH1C 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 ESH1C?

For technical support, including ESH1C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH1C requirements.

6.How does Aetrix verify that ESH1C is sourced from the original manufacturer or authorized distributors?

All ESH1C 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 ESH1C meets industry standards.

7.What is the process for return or replacement of ESH1C?

All ESH1C units undergo pre-shipment inspection (PSI). If there is an issue with ESH1C, 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 ESH1C part is unused and in its original packaging.

Return procedure for ESH1C:

1.Submit a request within 90 days.

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

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