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

Taiwan Semiconductor Corporation ES1A R3G

Name: ES1A R3G
Brand: Taiwan Semiconductor Corporation
SKU: ES1A R3G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES1A R3G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: ES1A R3G.pdf

Description:: DIODE GEN PURP 50V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:4,101

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Product details

Overview

ES1A R3G from Taiwan Semiconductor is a 1 A, 50 V super fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 35 ns reverse recovery time, 0.95 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C - used in DC-DC converter output stages for high-efficiency power conversion.

For engineers reviewing the ES1A R3G datasheet, ES1A R3G pinout, ES1A R3G application, or ES1A R3G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (R_θJL = 35 °C/W), junction temperature range (–55 to +150 °C), and RoHS/halogen-free compliance for industrial and lighting power supplies.

Technical Context

The ES1A R3G employs a glass-passivated single-die silicon junction optimized for super-fast switching in low-voltage, high-frequency rectification. Its 35 ns trr enables reduced switching losses in 100–500 kHz SMPS topologies, while the DO-214AC package supports automated placement and meets J-STD-020 moisture sensitivity level 1.

Designed for unidirectional conduction with cathode-band polarity marking, it delivers stable 1 A average forward current up to 150 °C junction temperature and withstands 30 A non-repetitive surge (8.3 ms half-sine), making it suitable for freewheeling and snubber roles in compact power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - maximum repetitive reverse voltage the device blocks without breakdown; defines safe operating ceiling in 24–48 V DC-DC outputs.
I_F	1 A continuous - rated average forward current at TA = 25°C; derates linearly above 75°C per forward current derating curve.
t_rr	35 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables high-frequency operation with minimal switching loss.
V_F (max)	0.95 V at IF = 1 A, TJ = 25°C - low conduction loss improves efficiency in low-voltage secondary-side rectification.
R_θJL	35 °C/W - junction-to-lead thermal resistance; supports direct PCB copper pad heat sinking for thermal management.
I_R (max)	5 µA at VR = 50 V, TJ = 25°C - low leakage preserves hold-up energy in standby and light-load conditions.
Junction Temp	–55 to +150 °C - wide operating range enables use in automotive under-hood and industrial ambient environments.

Pinout & Package

Package: DO-214AC (SMA), surface-mount, molded epoxy case meeting UL 94V-0; matte tin-plated leads; cathode indicated by band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., transformer secondary center-tap or switch node); accepts 1 A continuous forward flow.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; connects to output rail; blocks up to 50 V reverse voltage and sustains 30 A surge during transient events.

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and humidity resistance in reflow-soldered assemblies per J-STD-020 Level 1.
Super fast recovery (35 ns)	Reduces reverse recovery charge (Q_rr) and associated switching losses in 200–500 kHz converters.
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for environmentally regulated industrial and lighting products.
Automated placement compatible	DO-214AC footprint and lead geometry meet IPC-7351B standards for high-yield SMT assembly.

Applications

DC-DC Converter Output Rectification	LED Driver Snubber Circuit
Use Scenario: Secondary-side rectification in isolated 24 V input → 5/12 V output flyback or forward converters. IC Role / Device Role / Timing Role: Unidirectional power diode conducting during transformer reset phase; replaces slower 1N400x series. Use Value: 35 ns t_rr minimizes switching loss and EMI generation compared to standard recovery diodes.	Use Scenario: Voltage spike suppression across MOSFET drain-source in constant-current LED drivers. IC Role / Device Role / Timing Role: Fast clamping diode absorbing inductive kickback during PWM switching transitions. Use Value: Low V_F (0.95 V) and fast turn-off reduce power dissipation in high-duty-cycle snubbers.
Freewheeling in Buck Regulators	Lighting Ballast Input Bridge
Use Scenario: Freewheel path for inductor current in 12–48 V input buck regulators powering industrial sensors. IC Role / Device Role / Timing Role: Conducts during high-side switch off-time; must sustain 1 A average and 30 A surge peaks. Use Value: R_θJL = 35 °C/W allows direct thermal coupling to PCB copper, enabling reliable operation at 100% load.	Use Scenario: Input rectification stage in electronic CFL or LED tube ballasts operating from 100–240 V AC. IC Role / Device Role / Timing Role: One leg of full-wave bridge; handles 1 A RMS input current with low conduction loss. Use Value: 50 V V_RRM suits low-line applications; 5 µA I_R prevents excessive no-load power draw.

DC-DC Converter Output Rectification

LED Driver Snubber Circuit

Use Scenario: Secondary-side rectification in isolated 24 V input → 5/12 V output flyback or forward converters.

IC Role / Device Role / Timing Role: Unidirectional power diode conducting during transformer reset phase; replaces slower 1N400x series.

Use Value: 35 ns t_rr minimizes switching loss and EMI generation compared to standard recovery diodes.

Use Scenario: Voltage spike suppression across MOSFET drain-source in constant-current LED drivers.

IC Role / Device Role / Timing Role: Fast clamping diode absorbing inductive kickback during PWM switching transitions.

Use Value: Low V_F (0.95 V) and fast turn-off reduce power dissipation in high-duty-cycle snubbers.

Freewheeling in Buck Regulators

Lighting Ballast Input Bridge

Use Scenario: Freewheel path for inductor current in 12–48 V input buck regulators powering industrial sensors.

IC Role / Device Role / Timing Role: Conducts during high-side switch off-time; must sustain 1 A average and 30 A surge peaks.

Use Value: R_θJL = 35 °C/W allows direct thermal coupling to PCB copper, enabling reliable operation at 100% load.

Use Scenario: Input rectification stage in electronic CFL or LED tube ballasts operating from 100–240 V AC.

IC Role / Device Role / Timing Role: One leg of full-wave bridge; handles 1 A RMS input current with low conduction loss.

Use Value: 50 V V_RRM suits low-line applications; 5 µA I_R prevents excessive no-load power draw.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR105	V_RRM = 50 V, t_rr = 50 ns, V_F = 1.05 V @ 1 A - slower recovery and higher forward drop.	Higher switching loss in >250 kHz designs; acceptable in lower-frequency buck or linear-regulated supplies.	Choose when cost sensitivity outweighs efficiency targets and layout allows minor thermal margin increase.
Vishay VS-1EWH05	V_RRM = 50 V, t_rr = 30 ns, V_F = 0.92 V @ 1 A - slightly faster and lower V_F, but DO-214AA (SMB) package.	Larger footprint requires PCB redesign; better suited where ultra-low loss justifies layout change.	Select only if 30 ns t_rr and 0.92 V V_F deliver measurable system-level efficiency gain.

Compared with MUR105 and VS-1EWH05, the ES1A R3G offers the optimal balance of 35 ns recovery speed, 0.95 V forward voltage, DO-214AC compatibility, and J-STD-020 Level 1 moisture rating - making it preferred for space-constrained, high-frequency industrial DC-DC modules requiring proven SMT robustness.

Availability

ES1A R3G is available at Aetrix Electronics and suitable for DC-DC converters, LED driver snubbers, and buck regulator freewheeling applications requiring stable component supply, consistent parametric performance, and full traceability across production lots.

Supply support for ES1A R3G 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 diodes, and MOSFETs since 1979.

The ES1A R3G belongs to TSC's ES1x super fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies in industrial, lighting, and consumer electronics where low V_F, fast t_rr, and SMT reliability are critical.

FAQ

What is the maximum junction temperature rating for ES1A R3G?

The ES1A R3G has a maximum junction temperature (T_J) of +150 °C and a minimum of –55 °C. This rating is confirmed in the Absolute Maximum Ratings table and supported by thermal derating curves showing 1 A forward current capability down to 75 °C ambient before linear derating begins. The ES1A R3G maintains stable electrical performance across this full range when mounted on appropriate copper area.

Does ES1A R3G meet RoHS and halogen-free requirements?

Yes, the ES1A R3G is RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version O2112). The molding compound and plating materials are certified to these environmental standards, making ES1A R3G suitable for export-compliant industrial and lighting products.

What is the reverse recovery time (t_rr) specification for ES1A R3G?

The ES1A R3G has a maximum reverse recovery time (t_rr) of 35 ns, tested under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This value is specified in the ELECTRICAL SPECIFICATIONS table and applies directly to the ES1A R3G variant. It reflects the device's super fast switching capability, critical for minimizing losses in high-frequency DC-DC converters.

Is ES1A R3G pin-compatible with other DO-214AC rectifiers like 1N4007?

No, ES1A R3G is not pin-compatible with 1N4007. While both use axial-lead packages, the ES1A R3G uses DO-214AC (SMA), a surface-mount package with gull-wing leads, whereas 1N4007 uses DO-41, a through-hole package. Physical mounting, soldering method, and PCB footprint differ fundamentally. The ES1A R3G replaces slower SMD rectifiers such as MMSD103 or similar DO-214AC devices.

What is the forward voltage (V_F) of ES1A R3G at rated current?

The ES1A R3G has a maximum forward voltage (V_F) of 0.95 V at 1 A forward current and 25 °C junction temperature, as specified in the ELECTRICAL SPECIFICATIONS table. This value is confirmed for the ES1A variant only; higher-voltage members of the ES1x family (e.g., ES1J) exhibit higher V_F. At elevated temperatures, V_F decreases slightly due to semiconductor physics.

ES1A R3G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 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:: 5 µA @ 50 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

ES1A R3G FAQ

1.How can I place an order for ES1A R3G through Aetrix?

Please submit a Request for Quotation (RFQ) for ES1A R3G 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 ES1A R3G reliable?

The price and inventory of ES1A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1A R3G is usually 5 days.

3.What payment methods are accepted for ES1A R3G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1A R3G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES1A R3G?

ES1A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES1A R3G 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 ES1A R3G?

For technical support, including ES1A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1A R3G requirements.

6.How does Aetrix verify that ES1A R3G is sourced from the original manufacturer or authorized distributors?

All ES1A R3G 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 ES1A R3G meets industry standards.

7.What is the process for return or replacement of ES1A R3G?

All ES1A R3G units undergo pre-shipment inspection (PSI). If there is an issue with ES1A R3G, 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 ES1A R3G part is unused and in its original packaging.

Return procedure for ES1A R3G:

1.Submit a request within 90 days.

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

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