My Inquiry
My Account
Taiwan Semiconductor Corporation ES3A R7G
- Part No.:
- ES3A R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
ES3A R7G.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,194
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ES3A R7G from Taiwan Semiconductor is a 3 A, 50 V super fast recovery surface-mount rectifier in DO-214AB (SMC) package, featuring 35 ns reverse recovery time, 0.95 V max forward voltage at 3 A, and 100 A peak surge current - used for high-frequency freewheeling and SMPS output rectification in telecom power supplies.
For engineers reviewing the ES3A R7G datasheet, ES3A R7G pinout, ES3A R7G application, or ES3A R7G equivalent, key selection criteria include reverse recovery speed, thermal resistance (RθJL = 12 °C/W), junction temperature rating (–55 to +150 °C), and RoHS/halogen-free compliance for industrial-grade power conversion designs.
Technical Context
This single-die silicon rectifier uses glass-passivated PN junction technology optimized for switching-mode power supply secondary-side rectification. Its ultra-fast trr ≤ 35 ns minimizes switching losses during high-frequency operation up to several hundred kHz.
The device operates with low forward voltage drop (VF ≤ 0.95 V @ 3 A, 25 °C) and exhibits tight leakage control (IR ≤ 10 µA @ 25 °C, rated VR), supported by JESD201 Class 2 whisker resistance and moisture sensitivity level 1 handling per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 3 A - continuous DC forward current rating defines maximum steady-state output rectification capability |
| VRRM | 50 V - peak repetitive reverse voltage sets maximum blocking voltage in flyback or buck-derived topologies |
| trr | 35 ns - measured under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient operation >200 kHz switching |
| VF (max) | 0.95 V @ 3 A, 25 °C - low conduction loss improves system efficiency and reduces heatsink requirements |
| RθJL | 12 °C/W - junction-to-lead thermal resistance supports direct PCB copper pad heat sinking without external heatsink |
| IR (max) | 10 µA @ 25 °C - low leakage preserves regulation margin in high-impedance feedback or sensing paths |
Pinout & Package
Package: DO-214AB (SMC) - molded plastic case with matte tin-plated leads, UL 94V-0 rated, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to transformer secondary or switch node; requires adequate copper area for thermal dissipation |
| Cathode (Lead 2) | Forward current exit / reverse voltage reference | Marked by band; ties to output rail or ground return; critical for EMI filter placement and layout symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under thermal cycling and humidity exposure in unsealed industrial enclosures |
| Super fast recovery (trr ≤ 35 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in 200–500 kHz SMPS designs |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines without dry pack handling |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for telecom and industrial equipment shipped to EU, Japan, and China |
Applications
| Telecom AC-DC Adapters | Server PSU Secondary Rectification |
|---|---|
Use Scenario: 48 V output stage of 1 kW telecom rectifier operating at 300 kHz with synchronous FETs on primary side. IC Role / Device Role / Timing Role: Freewheeling diode clamping in active clamp forward topology; handles reverse recovery during primary switch turn-on. Use Value: 35 ns trr limits voltage overshoot and EMI generation, enabling smaller output filter capacitors and reduced snubber losses. | Use Scenario: +12 V output rail in redundant 80 PLUS Titanium server power supply with multi-phase LLC resonant converter. IC Role / Device Role / Timing Role: Output rectifier in center-tapped secondary winding; conducts only during half-cycle conduction windows. Use Value: 0.95 V VF at 3 A lowers conduction loss by ~15% vs. standard fast recovery diodes, improving full-load efficiency by 0.3–0.4%. |
| Industrial PLC Power Modules | 5G Remote Radio Unit (RRU) Power |
Use Scenario: Input rectification for isolated 24 V DC-DC module powering I/O isolation barriers and analog sensor interfaces. IC Role / Device Role / Timing Role: Bridge leg component in compact full-wave rectifier feeding bulk capacitor; operates continuously at 60–85 °C ambient. Use Value: RθJL = 12 °C/W allows direct thermal coupling to 2 oz copper plane, eliminating need for thermal vias or heatsinks in space-constrained modules. | Use Scenario: Bias supply rectification for GaN HEMT gate drivers and RF front-end bias rails in outdoor 5G macro base stations. IC Role / Device Role / Timing Role: High-reliability output rectifier in 12 V/1 A auxiliary supply; exposed to wide temperature swings (–40 to +85 °C). Use Value: –55 to +150 °C TJ range and JESD201 Class 2 whisker resistance ensure stable operation over 10+ year field life without solder joint degradation. |
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-3EYH05-M3/54 | Same DO-214AB package, 50 V VRRM, but VF = 0.92 V typ (vs. 0.95 V max); trr = 30 ns typ | Slightly lower conduction loss and faster recovery, but tighter VF distribution may affect parallel sharing in multi-diode arrays | Preferred where minimal VF variation across production lots is critical for current balancing |
| ON Semiconductor MUR350G | DO-201AD (axial) package, 50 V VRRM, VF = 0.92 V max, trr = 35 ns - not surface-mount compatible | Requires through-hole assembly and larger board area; unsuitable for automated SMT lines or dense PCB layouts | Select only when legacy axial footprint must be retained or thermal mass from leadframe improves transient surge handling |
Compared with VS-3EYH05-M3/54 and MUR350G, ES3A R7G offers optimal balance of SMT manufacturability, JEDEC-compliant moisture handling, and verified 35 ns trr performance - making it preferred for new telecom and industrial SMPS designs requiring tape-and-reel automation and long-term supply stability.
Availability
ES3A R7G is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server power supply secondary rectification, and industrial PLC power modules requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for ES3A R7G 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 industrial, computing, and communications markets since 1979.
The ES3x series was designed specifically for high-frequency switching power supply rectification - emphasizing fast recovery, low VF consistency, and robust SMT process compatibility across extended temperature and humidity conditions.
FAQ
What is the maximum junction temperature rating for ES3A R7G?
The ES3A R7G has a maximum junction temperature (TJ) rating of +150 °C and a minimum of –55 °C. This wide operating range allows reliable use in thermally demanding environments such as enclosed telecom power supplies or outdoor 5G radio units. The ES3A R7G maintains specified electrical parameters within this full range, and its RθJL of 12 °C/W enables effective heat transfer to the PCB without additional heatsinking.
Is ES3A R7G compatible with lead-free reflow soldering processes?
Yes, ES3A R7G is fully compatible with standard lead-free reflow profiles (JEDEC J-STD-020 Level 1), with no baking required prior to assembly. Its moisture sensitivity level 1 classification, matte tin-plated leads, and UL 94V-0 molding compound ensure robust performance through multiple reflow cycles. The ES3A R7G meets J-STD-002 solderability requirements and supports high-yield automated placement in modern SMT lines.
What does the 'R7G' suffix indicate in ES3A R7G?
The 'R7G' suffix in ES3A R7G denotes Taiwan Semiconductor's internal packaging and environmental coding: 'R7' specifies tape-and-reel packaging (3,000 pcs per reel), and 'G' indicates green (halogen-free) compound per IEC 61249-2-21. This matches the DO-214AB (SMC) package and confirms full RoHS compliance - distinct from non-G variants that may use brominated flame retardants.
How does ES3A R7G compare to standard fast recovery diodes in SMPS designs?
ES3A R7G delivers significantly faster reverse recovery (trr ≤ 35 ns) than standard fast recovery diodes (typically 50–100 ns), reducing switching losses and EMI in 200–500 kHz converters. Its 0.95 V max VF at 3 A also lowers conduction loss versus older generations. In practical SMPS designs, the ES3A R7G enables higher efficiency, smaller output filters, and improved thermal margins - especially in compact telecom and server power supplies.
Can ES3A R7G be used in parallel configurations for higher current handling?
ES3A R7G can be paralleled for increased current capacity, but requires careful layout: matched trace lengths, symmetrical thermal coupling to a common copper plane, and individual current-sharing resistors if precise balance is needed. Its VF tolerance (0.95 V max at 3 A, 25 °C) implies typical unit-to-unit variation; therefore, derating by 15–20% per device is recommended. For high-reliability parallel use, the ES3A R7G benefits from its glass-passivated junction and stable thermal resistance (RθJL = 12 °C/W).
ES3A R7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 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:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 45pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
ES3A R7G FAQ
1.How can I place an order for ES3A R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for ES3A R7G 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 ES3A R7G reliable?
The price and inventory of ES3A R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES3A R7G is usually 5 days.
3.What payment methods are accepted for ES3A R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES3A R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ES3A R7G?
ES3A R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ES3A R7G 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 ES3A R7G?
For technical support, including ES3A R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES3A R7G requirements.
6.How does Aetrix verify that ES3A R7G is sourced from the original manufacturer or authorized distributors?
All ES3A R7G 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 ES3A R7G meets industry standards.
7.What is the process for return or replacement of ES3A R7G?
All ES3A R7G units undergo pre-shipment inspection (PSI). If there is an issue with ES3A R7G, 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 ES3A R7G part is unused and in its original packaging.
Return procedure for ES3A R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ES3A R7G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
