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

Taiwan Semiconductor Corporation ESH2DAH

Name: ESH2DAH
Brand: Taiwan Semiconductor Corporation
SKU: ESH2DAH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ESH2DAH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: ESH2DAH.pdf

Description:: 25NS, 1A, 200V, ULTRA FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:15,000

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Product details

Overview

ESH2DAH from Taiwan Semiconductor is a 200 V, 1 A ultra-fast surface-mount rectifier diode in DO-214AC (SMA) package, featuring 25 ns reverse recovery time, 0.9 V forward voltage at 1 A, and AEC-Q101 qualification for automotive use in snubber and freewheeling circuits.

For engineers reviewing the ESH2DAH datasheet, ESH2DAH pinout, ESH2DAH application, or ESH2DAH equivalent, key selection criteria include peak reverse voltage rating (200 V), ultra-fast trr (25 ns), thermal resistance (R_θJL = 20 °C/W), surge capability (50 A I_FSM), and AEC-Q101 compliance for automotive reliability validation.

Technical Context

The ESH2DAH is a single-die, planar epitaxial ultra-fast recovery rectifier optimized for high-frequency switching in DC-DC converters and automotive power supplies. Its 200 V V_RRM, 25 ns trr, and low Q_rr minimize switching losses during turn-off transitions.

Thermally, it supports continuous operation up to 175 °C junction temperature with R_θJL = 20 °C/W enabling efficient heat transfer to PCB copper. The DO-214AC (SMA) package provides robust mechanical mounting and meets J-STD-020 Level 1 moisture sensitivity.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - maximum repetitive reverse blocking voltage; defines safe operating range in 24 V/48 V automotive systems with transient margin.
I_F	1 A - average forward current rating; supports continuous conduction mode in low-power DC-DC outputs up to ~12 W.
t_rr	25 ns - ultra-fast reverse recovery time; reduces switching loss and EMI in >100 kHz SMPS designs.
V_F	0.9 V @ 1 A, 25°C - low forward drop improves efficiency and reduces thermal load in compact layouts.
I_FSM	50 A - peak surge current handling; withstands inrush and fault transients in automotive lighting and motor control.
R_θJL	20 °C/W - junction-to-lead thermal resistance; enables direct thermal path to PCB copper pour without heatsink.
Junction Temp	−55 to +175 °C - extended temperature range supports under-hood automotive deployment.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck freewheel path); requires adequate copper area for thermal dissipation.
Cathode (Lead 2)	Forward current exit / reverse blocking terminal	Connected to output rail; cathode band orientation must match PCB silkscreen to prevent assembly error.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements.
Ultra-fast t_rr = 25 ns	Enables high-frequency operation (>200 kHz) with minimal reverse recovery charge (Q_rr) and associated losses.
R_θJL = 20 °C/W	Allows direct thermal coupling to PCB ground plane, eliminating need for thermal vias in space-constrained automotive modules.
Moisture Sensitivity Level 1	No bake preconditioning required before reflow; compatible with standard SMT assembly lines without special handling.
Halogen-free & RoHS	Meets IEC 61249-2-21 and EU RoHS Directive; suitable for environmentally regulated automotive supply chains.

Applications

DC–DC Converter	Automotive Lighting
Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment displays. IC Role / Device Role / Timing Role: Ultra-fast freewheeling diode conducting during MOSFET off-time; critical for minimizing voltage overshoot and ringing. Use Value: 25 ns t_rr and low V_F reduce conduction and switching losses, improving efficiency by ≥1.2% over standard fast rectifiers at 150 kHz.	Use Scenario: LED driver output stage in headlamp or DRL modules requiring transient immunity and thermal stability. IC Role / Device Role / Timing Role: Output rectifier and snubber clamp in boost/buck-boost LED drivers exposed to load dump pulses. Use Value: 200 V V_RRM and 50 A I_FSM withstand ISO 7637-2 Pulse 5a (load dump up to 60 V + inductive spike), ensuring system survival.
Snubber Network	Freewheeling Circuit
Use Scenario: RCD snubber across primary-side MOSFET in automotive AC/DC adapters or onboard chargers. IC Role / Device Role / Timing Role: Fast-recovery clamp diode that resets snubber capacitor during each switching cycle. Use Value: Low Q_rr and 25 ns t_rr limit snubber energy dissipation, reducing heat generation in sealed enclosures.	Use Scenario: Inductive load flyback path in solenoid or relay drivers within body control modules. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for coil current decay when drive signal turns off. Use Value: 175 °C T_JMAX and AEC-Q101 qualification ensure uninterrupted operation during prolonged engine bay thermal exposure.

DC–DC Converter

Automotive Lighting

Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment displays.

IC Role / Device Role / Timing Role: Ultra-fast freewheeling diode conducting during MOSFET off-time; critical for minimizing voltage overshoot and ringing.

Use Value: 25 ns t_rr and low V_F reduce conduction and switching losses, improving efficiency by ≥1.2% over standard fast rectifiers at 150 kHz.

Use Scenario: LED driver output stage in headlamp or DRL modules requiring transient immunity and thermal stability.

IC Role / Device Role / Timing Role: Output rectifier and snubber clamp in boost/buck-boost LED drivers exposed to load dump pulses.

Use Value: 200 V V_RRM and 50 A I_FSM withstand ISO 7637-2 Pulse 5a (load dump up to 60 V + inductive spike), ensuring system survival.

Snubber Network

Freewheeling Circuit

Use Scenario: RCD snubber across primary-side MOSFET in automotive AC/DC adapters or onboard chargers.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode that resets snubber capacitor during each switching cycle.

Use Value: Low Q_rr and 25 ns t_rr limit snubber energy dissipation, reducing heat generation in sealed enclosures.

Use Scenario: Inductive load flyback path in solenoid or relay drivers within body control modules.

IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for coil current decay when drive signal turns off.

Use Value: 175 °C T_JMAX and AEC-Q101 qualification ensure uninterrupted operation during prolonged engine bay thermal exposure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-1EWH02-M3/5AT	200 V V_RRM, 1 A I_F, trr = 35 ns, R_θJA = 100 °C/W, no AEC-Q101 claim	Higher trr increases switching loss in >150 kHz designs; lacks automotive qualification documentation	Acceptable for industrial DC-DC where AEC-Q101 is not mandated and frequency ≤120 kHz
ON Semiconductor MUR120RLG	200 V V_RRM, 1 A I_F, trr = 50 ns, R_θJL = 25 °C/W, AEC-Q101 qualified	Slower recovery increases Q_rr by ~2×; higher thermal resistance limits power density	Suitable for cost-sensitive automotive applications where 50 ns trr is acceptable and layout allows larger copper area

Compared with VS-1EWH02-M3/5AT and MUR120RLG, the ESH2DAH delivers superior high-frequency efficiency via its 25 ns trr and lower R_θJL, while maintaining full AEC-Q101 compliance-making it optimal for thermally constrained, high-switching-frequency automotive power stages.

Availability

ESH2DAH is available at Aetrix Electronics and suitable for automotive lighting, DC–DC converter, and snubber applications requiring stable component supply, AEC-Q101 traceability, and consistent DO-214AC (SMA) packaging.

Supply support for ESH2DAH 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 automotive, industrial, and consumer markets since 1979.

The ESH2DAH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive subsystems such as lighting, ADAS power supplies, and body electronics.

FAQ

What is the peak repetitive reverse voltage rating of the ESH2DAH?

The ESH2DAH has a peak repetitive reverse voltage (V_RRM) rating of 200 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2102). It defines the maximum reverse-biased voltage the device can block continuously without breakdown, making ESH2DAH suitable for 48 V automotive systems with transient margin. The ESH2DAH maintains this rating across its full operating temperature range.

Is the ESH2DAH qualified for automotive applications?

Yes, the ESH2DAH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming suitability for automotive power electronics. The ESH2DAH's marking code "ESH2DA" and packaging in DO-214AC (SMA) align with AEC-Q101-compliant production lots. No additional qualification is needed for ESH2DAH in automotive lighting or body control modules.

What is the reverse recovery time (t_rr) of the ESH2DAH and how is it measured?

The ESH2DAH has a maximum reverse recovery time (t_rr) of 25 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as specified in the Electrical Specifications table. This ultra-fast recovery enables high-frequency switching with minimal switching loss. The ESH2DAH achieves this performance through optimized epitaxial layer design and carrier lifetime control, distinguishing it from standard fast rectifiers with t_rr > 50 ns.

Does the ESH2DAH have a halogen-free and RoHS-compliant construction?

Yes, the ESH2DAH is both halogen-free per IEC 61249-2-21 and RoHS compliant, as stated in the Features section of the official datasheet. The molding compound, lead finish (matte tin), and internal materials meet these environmental standards. This makes the ESH2DAH acceptable for export to EU, China, and other regulated markets. The ESH2DAH's compliance is verified per lot and documented in TSC's material declarations.

What is the thermal resistance from junction to lead (R_θJL) for the ESH2DAH?

The ESH2DAH has a typical junction-to-lead thermal resistance (R_θJL) of 20 °C/W, as published in the Thermal Performance section. This low value reflects efficient heat conduction from the silicon die directly into the lead frame and PCB copper. For the ESH2DAH, this enables reliable 1 A operation at ambient temperatures up to 125 °C when mounted on ≥1 cm² of 2-oz copper, without requiring external heatsinking.

ESH2DAH 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):: 200 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 2 A

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

Reverse Recovery Time (trr):: 25 ns

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

Capacitance @ Vr, F:: 25pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

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

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

ESH2DAH FAQ

1.How can I place an order for ESH2DAH through Aetrix?

Please submit a Request for Quotation (RFQ) for ESH2DAH 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 ESH2DAH reliable?

The price and inventory of ESH2DAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH2DAH is usually 5 days.

3.What payment methods are accepted for ESH2DAH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH2DAH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ESH2DAH?

ESH2DAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ESH2DAH 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 ESH2DAH?

For technical support, including ESH2DAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH2DAH requirements.

6.How does Aetrix verify that ESH2DAH is sourced from the original manufacturer or authorized distributors?

All ESH2DAH 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 ESH2DAH meets industry standards.

7.What is the process for return or replacement of ESH2DAH?

All ESH2DAH units undergo pre-shipment inspection (PSI). If there is an issue with ESH2DAH, 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 ESH2DAH part is unused and in its original packaging.

Return procedure for ESH2DAH:

1.Submit a request within 90 days.

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

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