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

Taiwan Semiconductor Corporation ES3DB-A

Name: ES3DB-A
Brand: Taiwan Semiconductor Corporation
SKU: ES3DB-A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES3DB-A

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: ES3DB-A.pdf

Description:: 35NS, 3A, 200V, SUPER FAST RECOV

Quantity:: RFQ Add To RFQ list

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Inventory:9,933

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Product details

Overview

ES3DB-A from Taiwan Semiconductor is a 3A, 200V super fast surface-mount rectifier in DO-214AA (SMB) package, featuring 35ns reverse recovery time, 0.88V forward voltage at 3A/25°C, and 80A surge current capability. It serves as a freewheeling or output rectifier in high-frequency DC-DC converters requiring low conduction loss and fast switching.

For engineers reviewing the ES3DB-A datasheet, ES3DB-A pinout, ES3DB-A application, or ES3DB-A equivalent, key selection criteria include V_RRM = 200V, I_F = 3A continuous, t_rr ≤ 35ns, thermal resistance R_θJA = 78°C/W, and DO-214AA mechanical compatibility with automated SMT assembly.

Technical Context

The ES3DB-A is a single-die, glass-passivated silicon junction rectifier optimized for high-frequency switching power supplies. Its 35ns reverse recovery time enables efficient operation in SMPS topologies up to several hundred kHz, while its low 0.88V forward drop at rated current reduces conduction losses.

Thermal performance is defined with R_θJL = 20°C/W and R_θJA = 78°C/W on a 10mm × 10mm copper pad PCB. The device operates across –55°C to +150°C junction temperature range and meets J-STD-020 moisture sensitivity level 1.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in DC-DC output stage
I_F	3 A - Continuous forward current rating; defines steady-state power handling without derating below 75°C ambient
t_rr	35 ns - Reverse recovery time at I_F = 0.5A, I_R = 1.0A; enables high-frequency switching with minimal switching loss
V_F	0.88 V @ 3A, 25°C - Forward voltage drop; directly determines conduction loss and thermal load in rectification path
I_FSM	80 A @ 8.3ms - Non-repetitive surge current; supports inrush and transient overload conditions in power supply startup
R_θJA	78 °C/W - Junction-to-ambient thermal resistance on standard test board; used to calculate max ambient temperature for thermal design

Pinout & Package

Package: DO-214AA (SMB), 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	Forward current entry point	Connected to lower-potential side of circuit (e.g., switch node in buck converter)
Cathode	Forward current exit point	Connected to output rail; polarity band identifies this terminal for correct PCB placement

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and humidity resistance; eliminates need for conformal coating in industrial environments
Low reverse leakage (≤5 µA @ 25°C)	Minimizes standby power loss in offline adapters and battery-isolated systems
Moisture sensitivity level 1	Enables direct placement without baking; supports just-in-time SMT manufacturing flow
UL 94V-0 molding compound	Meets flammability safety requirements for enclosed power supplies and ITE equipment

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side synchronous or diode rectification in isolated flyback or forward converters delivering 12–48V outputs. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from transformer to output capacitor; reverse recovery speed limits switching frequency. Use Value: 35ns t_rr and 0.88V V_F reduce switching and conduction losses, improving efficiency by ~1.2% over standard fast rectifiers at 200kHz.	Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss return path during switch-off phase; must clamp inductive kickback within V_RRM limit. Use Value: 200V V_RRM and 80A I_FSM safely absorb 400V transients with 50A peak currents typical in 24V industrial inverters.
AC-DC Adapter Secondary Rectification	Industrial Power Supply Hold-up Diode
Use Scenario: Output rectification in compact 15–65W universal-input AC-DC adapters powering consumer electronics. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at full load with thermal cycling. Use Value: DO-214AA footprint allows high-density layout; 150°C T_JMAX supports operation in sealed enclosures up to 70°C ambient.	Use Scenario: Hold-up diode isolating backup capacitor bank from main DC bus during brownout or shutdown in PLC power modules. IC Role / Device Role / Timing Role: Blocks reverse current from capacitors into failing supply; must sustain rated voltage with zero forward bias. Use Value: ≤5 µA reverse leakage at 25°C ensures <10µA standby drain, extending hold-up time by >8% versus higher-leakage alternatives.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side synchronous or diode rectification in isolated flyback or forward converters delivering 12–48V outputs.

IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from transformer to output capacitor; reverse recovery speed limits switching frequency.

Use Value: 35ns t_rr and 0.88V V_F reduce switching and conduction losses, improving efficiency by ~1.2% over standard fast rectifiers at 200kHz.

Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in half-bridge inverters.

IC Role / Device Role / Timing Role: Provides low-loss return path during switch-off phase; must clamp inductive kickback within V_RRM limit.

Use Value: 200V V_RRM and 80A I_FSM safely absorb 400V transients with 50A peak currents typical in 24V industrial inverters.

AC-DC Adapter Secondary Rectification

Industrial Power Supply Hold-up Diode

Use Scenario: Output rectification in compact 15–65W universal-input AC-DC adapters powering consumer electronics.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at full load with thermal cycling.

Use Value: DO-214AA footprint allows high-density layout; 150°C T_JMAX supports operation in sealed enclosures up to 70°C ambient.

Use Scenario: Hold-up diode isolating backup capacitor bank from main DC bus during brownout or shutdown in PLC power modules.

IC Role / Device Role / Timing Role: Blocks reverse current from capacitors into failing supply; must sustain rated voltage with zero forward bias.

Use Value: ≤5 µA reverse leakage at 25°C ensures <10µA standby drain, extending hold-up time by >8% versus higher-leakage 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
Vishay VS-3EYH02-M3/45	V_RRM = 200V, I_F = 3A, t_rr = 35ns, but VF = 0.92V @ 3A/25°C; R_θJA = 85°C/W	Slightly higher conduction loss and thermal resistance; suitable where layout allows larger copper area	Prefer ES3DB-A when board space is constrained or thermal margin is tight
ON Semiconductor MUR320RLG	V_RRM = 200V, I_F = 3A, t_rr = 35ns, VF = 0.87V @ 3A/25°C, but DO-201AD (axial) package	Requires through-hole mounting; incompatible with SMT-only production lines	Select ES3DB-A for fully automated SMT assembly; choose MUR320RLG only if axial form factor is required

Compared with VS-3EYH02-M3/45 and MUR320RLG, the ES3DB-A delivers identical reverse recovery performance and superior thermal resistance (78°C/W vs. 85°C/W) in an SMT-optimized DO-214AA package, making it preferred for space-constrained, high-efficiency DC-DC designs.

Availability

ES3DB-A is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and industrial power supply hold-up diode applications requiring stable component supply and consistent parametric performance across production lots.

Supply support for ES3DB-A 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 ES3DB-A belongs to TSC's ES3x-A super fast rectifier family, engineered specifically for high-frequency switching power supplies where low V_F, fast t_rr, and robust thermal performance are critical to system efficiency and reliability.

FAQ

What is the maximum junction temperature rating for the ES3DB-A?

The ES3DB-A has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings table. This rating applies under continuous operation with proper PCB thermal management-specifically using a 10mm × 10mm copper pad per TSC's thermal test condition. Operation beyond this temperature risks permanent degradation of the glass-passivated junction. Always verify actual T_J in your design using R_θJA = 78°C/W and measured ambient conditions. The ES3DB-A must not exceed +150°C at the die.

Does the ES3DB-A have a specified reverse recovery time, and under what test conditions?

Yes, the ES3DB-A has a reverse recovery time (t_rr) of ≤35ns, measured under the condition: I_F = 0.5A, I_R = 1.0A, and I_RR = 0.25A. This value is confirmed in the Electrical Specifications table and reflects performance at 25°C junction temperature. The ES3DB-A achieves this speed via optimized carrier lifetime control in its epitaxial structure, enabling use in 200–500kHz SMPS designs without excessive switching loss.

What is the forward voltage drop of the ES3DB-A at full rated current and room temperature?

The ES3DB-A exhibits a forward voltage (V_F) of 0.88V maximum at I_F = 3.0A and T_J = 25°C, as specified in the Electrical Specifications table. At the same current and elevated junction temperature (125°C), V_F drops to 0.73V (typical) and 0.88V (max), reflecting the negative temperature coefficient of silicon PN junctions. This behavior is inherent to the ES3DB-A's material and process design.

Is the ES3DB-A compatible with lead-free reflow soldering processes?

Yes, the ES3DB-A features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for lead-free reflow profiles. Its DO-214AA package withstands peak temperatures up to 260°C for 10 seconds, meeting IPC/JEDEC J-STD-020 moisture sensitivity level 1-no pre-bake required. The ES3DB-A's construction and plating ensure reliable wetting and intermetallic formation during standard Pb-free reflow cycles used in modern SMT lines.

How does the ES3DB-A compare to the ES3GB-A and ES3JB-A in terms of voltage rating and forward voltage?

The ES3DB-A is the 200V variant in the ES3x-A family, whereas ES3GB-A is rated for 400V and ES3JB-A for 600V. All share identical I_F = 3A, t_rr ≤ 35ns, and DO-214AA packaging. However, forward voltage increases with blocking voltage: ES3DB-A has V_F = 0.88V @ 3A/25°C, ES3GB-A = 1.10V, and ES3JB-A = 1.48V. Select ES3DB-A when 200V V_RRM suffices to minimize conduction loss.

ES3DB-A Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 3 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 200 V

Capacitance @ Vr, F:: 57pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

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

ES3DB-A FAQ

1.How can I place an order for ES3DB-A through Aetrix?

Please submit a Request for Quotation (RFQ) for ES3DB-A 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 ES3DB-A reliable?

The price and inventory of ES3DB-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES3DB-A is usually 5 days.

3.What payment methods are accepted for ES3DB-A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES3DB-A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES3DB-A?

ES3DB-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES3DB-A 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 ES3DB-A?

For technical support, including ES3DB-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES3DB-A requirements.

6.How does Aetrix verify that ES3DB-A is sourced from the original manufacturer or authorized distributors?

All ES3DB-A 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 ES3DB-A meets industry standards.

7.What is the process for return or replacement of ES3DB-A?

All ES3DB-A units undergo pre-shipment inspection (PSI). If there is an issue with ES3DB-A, 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 ES3DB-A part is unused and in its original packaging.

Return procedure for ES3DB-A:

1.Submit a request within 90 days.

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

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