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Taiwan Semiconductor Corporation ESH3B R7G
- Part No.:
- ESH3B R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
ESH3B R7G.pdf
- Description:
- DIODE GEN PURP 100V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
ESH3B R7G from Taiwan Semiconductor is a 3A, 100V ultra-fast surface-mount rectifier diode in DO-214AB (SMC) package, featuring 20 ns reverse recovery time, 0.9 V forward voltage at 3 A, and 125 A peak surge current - used in high-frequency switching mode power supplies for computer and telecom systems.
For engineers reviewing the ESH3B R7G datasheet, ESH3B R7G pinout, ESH3B R7G application, or ESH3B R7G equivalent, key selection criteria include repetitive peak reverse voltage (100 V), thermal resistance (12 °C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and SMC package compatibility with automated placement.
Technical Context
The ESH3B R7G is a single-die, glass-passivated silicon rectifier optimized for high-efficiency DC/DC conversion where fast switching and low conduction loss are critical. Its ultra-fast recovery (trr ≤ 20 ns) minimizes switching losses in SMPS operating above 50 kHz.
Thermally, it supports continuous operation up to 175 °C junction temperature with 12 °C/W junction-to-lead resistance, enabling compact heatsinking in space-constrained telecom power modules. Polarity is marked by cathode band on the DO-214AB body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 3 A - average forward current rating under specified thermal conditions |
| trr | 20 ns - reverse recovery time at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables >100 kHz switching |
| VF | 0.9 V max at IF = 3 A, TJ = 25°C - low conduction loss improves power stage efficiency |
| RθJL | 12 °C/W - thermal resistance from junction to lead; supports direct PCB copper pad heat transfer |
| IR | 5 µA max at VR = 100 V, TJ = 25°C - low leakage preserves standby power integrity |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case meeting UL 94V-0, matte tin-plated leads compliant with J-STD-002 solderability, polarity indicated by cathode band, weight ≈ 0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or source in rectification path |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output capacitor or switching node in flyback/freewheeling topologies |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances reliability and long-term stability under thermal cycling and humidity exposure |
| Ultra-fast trr ≤ 20 ns | Reduces switching losses and EMI generation in high-frequency converters (>100 kHz) |
| J-STD-020 Level 1 MSL | Enables standard SMT reflow without baking or special handling prior to assembly |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally restricted markets |
Applications
| Server Power Supply Rectification | Telecom DC-DC Converter Output Stage |
|---|---|
Use Scenario: High-density 12 V/48 V intermediate bus conversion in rack-mounted servers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant LLC topology. Use Value: 20 ns trr and 0.9 V VF reduce conduction + switching losses, improving full-load efficiency by ≥0.8% vs. standard fast rectifiers. | Use Scenario: Secondary-side rectification in isolated 48 V–12 V telecom power modules. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or phase-shifted full-bridge converters. Use Value: Low RθJL (12 °C/W) allows direct thermal coupling to PCB ground plane, maintaining <125 °C junction temp at 3 A continuous. |
| Industrial PLC Power Input Stage | Networking Equipment AC-DC Front-End |
Use Scenario: Input bridge rectification in wide-input-range (85–264 VAC) industrial PLC power supplies. IC Role / Device Role / Timing Role: High-voltage leg rectifier in discrete bridge configuration. Use Value: 100 V VRRM with 125 A IFSM withstands line surges and cold-start inrush without failure. | Use Scenario: High-frequency rectification in compact PoE+ midspan power adapters. IC Role / Device Role / Timing Role: Fast recovery diode in boost PFC or flyback secondary. Use Value: DO-214AB footprint ensures compatibility with high-volume SMT lines while supporting >200 kHz operation. |
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-3EWH01-M3/45 | Same DO-214AB package; 100 V VRRM, 3 A IF, but trr = 25 ns (vs. 20 ns), VF = 0.92 V | Slightly higher switching loss in >150 kHz designs; identical thermal profile | Acceptable where 5 ns trr margin is not critical; validated for telecom SMPS per Vishay AN-945 |
| ON Semiconductor MUR310RLG | DO-214AB; 100 V VRRM, 3 A IF, trr = 35 ns, VF = 0.87 V - slower but lower VF | Higher switching loss limits use to ≤100 kHz; better conduction efficiency at light loads | Preferable in cost-sensitive, lower-frequency industrial PSUs where trr < 25 ns is not required |
Compared with VS-3EWH01-M3/45 and MUR310RLG, the ESH3B R7G delivers the fastest recovery (20 ns) in its voltage class while maintaining competitive VF and thermal performance - making it optimal for high-frequency, high-efficiency server and telecom power stages where switching loss dominates total loss.
Availability
ESH3B R7G is available at Aetrix Electronics and suitable for server power supply rectification, telecom DC-DC converter output stages, and industrial PLC power input stages requiring stable component supply, J-STD-020 Level 1 handling, and RoHS-compliant sourcing.
Supply support for ESH3B 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, specializing in power rectifiers, TVS diodes, MOSFETs, and LED drivers since 1979.
The ESH3B R7G belongs to TSC's ESH3x ultra-fast rectifier family, designed specifically for high-frequency switching power conversion in computing, telecommunications, and industrial equipment where low trr, robust surge capability, and automated assembly compatibility are essential.
FAQ
What is the maximum junction temperature rating for the ESH3B R7G?
The ESH3B R7G has a maximum junction temperature (TJ) rating of +175 °C, allowing reliable operation in thermally demanding environments such as enclosed telecom power modules or high-ambient industrial control cabinets. This rating is supported by its 12 °C/W junction-to-lead thermal resistance and glass-passivated die construction. Derating curves in the ESH3B R7G datasheet confirm sustained 3 A operation up to 125 °C ambient with adequate PCB copper area.
Is the ESH3B R7G compatible with lead-free reflow soldering processes?
Yes, the ESH3B R7G is fully compatible with lead-free reflow soldering per J-STD-002, using matte tin-plated leads and a UL 94V-0 compliant molding compound. Its J-STD-020 moisture sensitivity level is Level 1, meaning it can be subjected to standard IPC/JEDEC reflow profiles (peak temp ≤ 260 °C) without baking. The ESH3B R7G has been qualified for 3 reflow cycles without degradation.
What does the 'R7G' suffix indicate in ESH3B R7G?
The 'R7G' suffix in ESH3B R7G denotes Taiwan Semiconductor's internal tape-and-reel packaging code: 'R7' indicates 3,000 pcs per reel, and 'G' signifies green (halogen-free) compound per IEC 61249-2-21. This matches the ordering information in the ESH3B R7G datasheet, where 'ESH3x' is the base part number and suffixes define packaging and environmental compliance - not electrical variation.
How does the ESH3B R7G compare to the ESH3C and ESH3D variants?
The ESH3B R7G differs from ESH3C and ESH3D solely in rated repetitive peak reverse voltage: ESH3B R7G is 100 V, ESH3C is 150 V, and ESH3D is 200 V. All share identical package (DO-214AB), forward current (3 A), trr (≤20 ns), VF (≤0.9 V), and thermal specs. Pinout, marking, and mechanical dimensions are fully interchangeable - only voltage rating changes across the ESH3x family.
Can the ESH3B R7G be used as a freewheeling diode in a 48 V automotive DC-DC converter?
The ESH3B R7G is not recommended for automotive 48 V systems due to its 100 V VRRM rating - insufficient margin against load dump transients (ISO 7637-2 Pulse 5a: up to 120 V). While its 125 A IFSM handles short surges, the ESH3C (150 V) or ESH3D (200 V) variants are appropriate for automotive-grade designs. The ESH3B R7G remains ideal for commercial telecom and server applications with controlled input ranges.
ESH3B 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):
- 100 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 20 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 45pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
ESH3B R7G FAQ
1.How can I place an order for ESH3B R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for ESH3B 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 ESH3B R7G reliable?
The price and inventory of ESH3B R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESH3B R7G is usually 5 days.
3.What payment methods are accepted for ESH3B R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESH3B R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESH3B R7G?
ESH3B R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESH3B 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 ESH3B R7G?
For technical support, including ESH3B R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESH3B R7G requirements.
6.How does Aetrix verify that ESH3B R7G is sourced from the original manufacturer or authorized distributors?
All ESH3B 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 ESH3B R7G meets industry standards.
7.What is the process for return or replacement of ESH3B R7G?
All ESH3B R7G units undergo pre-shipment inspection (PSI). If there is an issue with ESH3B 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 ESH3B R7G part is unused and in its original packaging.
Return procedure for ESH3B R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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