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

Taiwan Semiconductor Corporation ES1DALH

Name: ES1DALH
Brand: Taiwan Semiconductor Corporation
SKU: ES1DALH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES1DALH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: ES1DALH.pdf

Description:: 35NS, 1A, 200V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:14,000

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Product details

Overview

ES1DALH from Taiwan Semiconductor is a 1A, 200V super fast surface-mount rectifier diode in a Thin SMA package, featuring 35ns reverse recovery time, 0.85V forward voltage at 1.0A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in DC/DC converters where low conduction loss and fast switching are required.

For engineers reviewing the ES1DALH datasheet, ES1DALH pinout, ES1DALH application, or ES1DALH equivalent, key selection criteria include its 200V V_RRM, 30A I_FSM surge rating, 28°C/W R_θJL, J-STD-020 Level 1 moisture sensitivity, and compatibility with automated SMT placement on thin-profile PCBs.

Technical Context

The ES1DALH employs a glass-passivated silicon junction to achieve stable reverse blocking and low leakage (<1µA at 25°C, <20µA at 125°C) across its 200V rating. Its super-fast recovery (trr ≤35ns) minimizes switching losses in high-frequency power conversion topologies.

Thermally, it delivers R_θJL = 28°C/W and R_θJA = 67°C/W when mounted on a 5mm × 5mm Cu pad, supporting continuous 1A operation up to +150°C junction temperature while maintaining robust transient surge capability (60A @ 1ms).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage before breakdown; defines safe operating ceiling in DC/DC snubber or flyback clamp circuits.
I_F	1 A - Continuous forward current rating; supports steady-state power handling in compact 1A-class converters.
I_FSM	30 A (8.3ms), 60 A (1ms) - Non-repetitive surge current capability; enables robustness against inrush and fault transients.
V_F	0.85 V @ 1.0A, 25°C - Low conduction loss directly reduces thermal load and improves system efficiency.
t_rr	≤35 ns - Fast reverse recovery minimizes switching losses and EMI in >100kHz power stages.
C_J	18 pF @ 1MHz, 4V - Low junction capacitance preserves high-frequency response and reduces capacitive coupling noise.
R_θJL	28 °C/W - Efficient heat transfer to PCB leads enables reliable operation without heatsinking in space-constrained layouts.

Pinout & Package

Package: Thin SMA - ultra-low-profile surface-mount package (max height 1.1mm), RoHS-compliant, halogen-free, matte tin-plated leads, polarity indicated by cathode band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter); requires adequate copper pour for thermal dissipation.
Cathode	Forward current exit / reverse blocking terminal	Connected to higher-potential rail (e.g., output capacitor positive); cathode band marks physical orientation for automated placement verification.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive underhood applications per stress test requirements including temperature cycling, HTRB, and ESD.
Glass passivated junction	Enhances long-term reliability and humidity resistance versus epoxy-passivated alternatives; critical for industrial and automotive environments.
Moisture sensitivity level 1	Zero bake requirement prior to reflow; compatible with standard SMT assembly lines without dry-pack handling.
Low profile (1.1mm max height)	Enables use in ultra-thin power modules and portable electronics where Z-height is constrained.
UL 94V-0 molding compound	Meets stringent flammability safety standards for end equipment requiring regulatory compliance (e.g., automotive ECUs).

Applications

Automotive DC/DC Converters	Industrial Snubber Circuits
Use Scenario: Step-down voltage regulation in 12V/48V automotive subsystems (e.g., ADAS camera modules, infotainment power rails). IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck converters operating at 200–500kHz. Use Value: 0.85V V_F and 35ns t_rr reduce conduction and switching losses, enabling >92% efficiency at 1A load without forced air cooling.	Use Scenario: Energy dissipation in IGBT or MOSFET gate-drive snubbers within motor drives and UPS inverters. IC Role / Device Role / Timing Role: Clamp diode absorbing turn-off voltage spikes during high-dI/dt switching events. Use Value: 200V V_RRM and 60A 1ms surge rating ensure reliable clamping of transients up to 180V peak without avalanche degradation.
Compact AC-DC Adapters	Telecom Power Supplies
Use Scenario: Output rectification in ultra-slim wall adapters (e.g., USB-C PD chargers ≤15mm thickness). IC Role / Device Role / Timing Role: Secondary-side rectifier in quasi-resonant flyback topologies. Use Value: Thin SMA package (1.1mm height) and 0.029g weight enable mechanical integration into space-limited enclosures without compromising thermal performance.	Use Scenario: Input bridge rectification or hold-up capacitor charging in distributed telecom power systems (e.g., base station remote radio units). IC Role / Device Role / Timing Role: High-reliability input rectifier subjected to line surges and wide ambient temperature swings (−40°C to +85°C). Use Value: AEC-Q101 qualification and −55°C to +150°C T_J range provide extended lifetime and field failure immunity beyond commercial-grade alternatives.

Automotive DC/DC Converters

Industrial Snubber Circuits

Use Scenario: Step-down voltage regulation in 12V/48V automotive subsystems (e.g., ADAS camera modules, infotainment power rails).

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck converters operating at 200–500kHz.

Use Value: 0.85V V_F and 35ns t_rr reduce conduction and switching losses, enabling >92% efficiency at 1A load without forced air cooling.

Use Scenario: Energy dissipation in IGBT or MOSFET gate-drive snubbers within motor drives and UPS inverters.

IC Role / Device Role / Timing Role: Clamp diode absorbing turn-off voltage spikes during high-dI/dt switching events.

Use Value: 200V V_RRM and 60A 1ms surge rating ensure reliable clamping of transients up to 180V peak without avalanche degradation.

Compact AC-DC Adapters

Telecom Power Supplies

Use Scenario: Output rectification in ultra-slim wall adapters (e.g., USB-C PD chargers ≤15mm thickness).

IC Role / Device Role / Timing Role: Secondary-side rectifier in quasi-resonant flyback topologies.

Use Value: Thin SMA package (1.1mm height) and 0.029g weight enable mechanical integration into space-limited enclosures without compromising thermal performance.

Use Scenario: Input bridge rectification or hold-up capacitor charging in distributed telecom power systems (e.g., base station remote radio units).

IC Role / Device Role / Timing Role: High-reliability input rectifier subjected to line surges and wide ambient temperature swings (−40°C to +85°C).

Use Value: AEC-Q101 qualification and −55°C to +150°C T_J range provide extended lifetime and field failure immunity beyond commercial-grade alternatives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R02UF	Same 1A/200V rating, but TO-277 package (higher R_θJA = 90°C/W); VF = 0.95V @ 1A/25°C.	Less suitable for ultra-thin designs due to 1.6mm height; better suited for through-hole or high-current discrete layouts.	Choose STTH1R02UF only if board-level thermal design accommodates higher junction rise or TO-277 footprint is already standardized.
ON Semi MUR120	1A/200V, SMA package, but trr = 50ns and VF = 0.93V @ 1A/25°C; not AEC-Q101 qualified.	Lacks automotive qualification and exhibits slower recovery-may increase EMI in high-frequency converters.	Select MUR120 only for cost-sensitive commercial applications where AEC-Q101 and sub-40ns trr are not mandatory.

Compared with STTH1R02UF and MUR120, the ES1DALH uniquely combines AEC-Q101 qualification, 35ns recovery, 0.85V forward drop, and Thin SMA packaging-making it the optimal choice for space-constrained, thermally demanding, and automotive-compliant 1A rectification tasks.

Availability

ES1DALH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial snubber circuits, and compact AC-DC adapters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ES1DALH 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 devices, rectifiers, TVS diodes, and LED drivers.

The ES1DALH belongs to TSC's ES1xALH super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial applications where low V_F, fast t_rr, and AEC-Q101 compliance are essential.

FAQ

What is the maximum junction temperature rating for ES1DALH?

The ES1DALH has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This allows continuous 1A operation in high-ambient environments when properly mounted on a 5mm × 5mm copper pad. Derating curves confirm usable current down to 0.5A at 125°C ambient, making ES1DALH suitable for under-hood automotive locations where thermal management is constrained.

Is ES1DALH pin-compatible with ES1BALH or ES1GALH?

No, ES1DALH is not pin-compatible with ES1BALH or ES1GALH in the functional sense-though all share the identical Thin SMA package and two-terminal anode/cathode configuration, their electrical parameters differ significantly: ES1DALH is rated for 200V V_RRM, while ES1BALH is 100V and ES1GALH is 400V. Substituting across this family requires verifying voltage margin, thermal derating, and circuit stress conditions-ES1DALH must not be used as a drop-in replacement without full system validation.

Does ES1DALH meet automotive qualification standards?

Yes, ES1DALH is explicitly AEC-Q101 qualified per the Taiwan Semiconductor datasheet, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD). This certification confirms suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal, mechanical, and electrical stress is mission-critical-ES1DALH is not merely "automotive grade" but formally qualified.

What is the reverse recovery time (t_rr) specification for ES1DALH?

The reverse recovery time (t_rr) for ES1DALH is specified as ≤35ns under test conditions of I_F = 0.5A, I_R = 1.0A, and I_rr = 0.25A. This value is measured and guaranteed per the official datasheet and enables efficient operation in switching power supplies above 200kHz. The fast t_rr directly reduces switching losses and associated EMI generation compared to standard or fast recovery diodes with t_rr > 50ns.

What does the marking code 'ES1DAH' indicate on the ES1DALH device body?

The marking code 'ES1DAH' laser-etched on the ES1DALH case corresponds to the device's voltage grade (D = 200V) and family identity, per Taiwan Semiconductor's ordering nomenclature. It omits the final 'L' (which denotes tape-and-reel packaging) and 'H' (halogen-free compliance) for space constraints on the small Thin SMA body. Full part traceability-including date code and factory ID-is maintained via internal lot tracking, and 'ES1DAH' is the industry-standard visible identifier for ES1DALH in automated optical inspection (AOI) and placement systems.

ES1DALH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-221AC, SMA Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 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):: 35 ns

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

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: Thin SMA

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

ES1DALH FAQ

1.How can I place an order for ES1DALH through Aetrix?

Please submit a Request for Quotation (RFQ) for ES1DALH 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 ES1DALH reliable?

The price and inventory of ES1DALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1DALH is usually 5 days.

3.What payment methods are accepted for ES1DALH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1DALH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES1DALH?

ES1DALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES1DALH 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 ES1DALH?

For technical support, including ES1DALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1DALH requirements.

6.How does Aetrix verify that ES1DALH is sourced from the original manufacturer or authorized distributors?

All ES1DALH 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 ES1DALH meets industry standards.

7.What is the process for return or replacement of ES1DALH?

All ES1DALH units undergo pre-shipment inspection (PSI). If there is an issue with ES1DALH, 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 ES1DALH part is unused and in its original packaging.

Return procedure for ES1DALH:

1.Submit a request within 90 days.

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

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