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Taiwan Semiconductor Corporation HER306G-K
- Part No.:
- HER306G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER306G-K.pdf
- Description:
- 75NS, 3A, 600V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:8,837
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Product details
Overview
HER306G-K from Taiwan Semiconductor is a high-efficiency, single-die, ultrafast recovery rectifier diode in DO-201AD package, rated for 3 A average forward current, 600 V repetitive peak reverse voltage, and 75 ns reverse recovery time at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A - used in switching-mode power supplies and freewheeling paths.
For engineers reviewing the HER306G-K datasheet, HER306G-K pinout, HER306G-K application, or HER306G-K equivalent, key selection criteria include its 600 V VRRM rating, 1.7 V max forward voltage at 3 A and 25°C, 125 A surge capability, 10 °C/W junction-to-lead thermal resistance, and DO-201AD mechanical compatibility with high-reliability industrial DC/DC converters.
Technical Context
This device operates as a unidirectional, single-junction silicon rectifier optimized for high-frequency switching applications. Its ultrafast trr of 75 ns and low CJ of 35 pF at 1 MHz / 4.0 V enable reduced switching losses in SMPS topologies where reverse recovery behavior critically impacts efficiency and EMI.
The HER306G-K features pure tin-plated leads compliant with J-STD-002 solderability, meets JESD 201 Class 1A whisker resistance, and uses UL 94V-0 molding compound - supporting automated assembly and long-term reliability in thermally demanding environments up to TJ = 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - maximum non-repetitive reverse voltage the device blocks without breakdown; defines usable input voltage range in offline rectification. |
| IF(AV) | 3 A - continuous average forward current under specified thermal conditions; determines steady-state power handling in DC/DC output stages. |
| VF(max) | 1.7 V @ 3 A, 25°C - forward conduction loss at rated current; directly impacts conduction loss and thermal design in high-current paths. |
| trr | 75 ns - time to recover from reverse conduction; critical for minimizing switching loss and ringing in high-frequency converters (>100 kHz). |
| IFSM | 125 A - peak non-repetitive surge current (8.3 ms half-sine); supports inrush and fault-current robustness in power supply inputs. |
| RθJL | 10 °C/W - thermal resistance from junction to lead; enables accurate temperature rise estimation when mounted on PCB copper pads. |
| CJ | 35 pF @ 1 MHz, VR = 4.0 V - junction capacitance affecting high-frequency switching noise and snubber design in flyback or LLC resonant circuits. |
Pinout & Package
Package: DO-201AD - axial-lead, molded plastic case with cathode band marking; 1.10 g typical weight; RoHS-compliant, halogen-free per IEC 61249-2-21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry terminal | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) in bridge/freewheeling configurations. |
| Cathode (Lead 2, banded end) | Forward current exit terminal | Connected to output capacitor positive rail or inductor output; polarity must be observed to prevent destructive reverse conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery (trr = 75 ns) | Reduces switching loss and EMI generation in high-frequency SMPS designs operating above 50 kHz. |
| Low forward voltage (VF ≤ 1.7 V @ 3 A) | Minimizes conduction loss and thermal stress in compact, high-density power modules and adapters. |
| High surge rating (IFSM = 125 A) | Withstands repeated cold-start surges and transient overloads without degradation in telecom and industrial AC/DC front-ends. |
| DO-201AD mechanical standardization | Ensures drop-in replacement compatibility with legacy rectifier footprints and automated pick-and-place tooling. |
| JESD 201 Class 1A whisker resistance | Guarantees long-term interconnect reliability in high-humidity or elevated-temperature environments without tin whisker growth risk. |
Applications
| AC/DC Adapter Output Rectification | DC/DC Converter Freewheeling Diode |
|---|---|
Use Scenario: Converts high-frequency transformer secondary AC into regulated DC output in compact wall adapters and USB-PD chargers. IC Role / Device Role / Timing Role: Unidirectional current steering element conducting during transformer demagnetization phase. Use Value: HER306G-K's 75 ns trr and 1.7 V VF reduce switching loss and improve efficiency >90% at 65–100 kHz operation. | Use Scenario: Provides current path for inductor energy discharge during high-side switch off-time in buck or flyback converters. IC Role / Device Role / Timing Role: Freewheeling diode enabling continuous inductor current and preventing voltage spikes. Use Value: HER306G-K's 125 A IFSM withstands transient inductor current surges during load-step events. |
| Industrial Switched-Mode Inverter Input Stage | Uninterruptible Power Supply (UPS) Battery Charging Circuit |
Use Scenario: Rectifies AC line input before PFC stage in motor drive inverters and HVAC control systems. IC Role / Device Role / Timing Role: Primary input rectifier handling 3 A continuous current at 600 V blocking requirement. Use Value: HER306G-K's 600 V VRRM and 150°C TJ max support operation across universal AC input (85–265 VAC) with safety margin. | Use Scenario: Isolates battery bank from charger circuit while allowing controlled charging current flow in line-interactive UPS units. IC Role / Device Role / Timing Role: Reverse-blocking diode preventing battery backfeed into charger during AC failure. Use Value: HER306G-K's 10 µA IR at 25°C ensures minimal standby leakage, preserving battery charge over extended hold-up periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600 V VRRM, 3 A IF, 65 ns trr, TO-220AC package | Higher thermal mass but requires heatsink mounting; not DO-201AD drop-in | Preferred where higher surge tolerance and forced-air cooling are available. |
| ON Semiconductor MUR3060CT | 600 V VRRM, dual common-cathode configuration, 75 ns trr, TO-220AB package | Dual-diode layout enables full-wave rectification; larger footprint and different pinout | Used when dual-output or center-tapped transformer rectification is required. |
Compared with STTH3L06S and MUR3060CT, the HER306G-K offers direct DO-201AD footprint compatibility, lower system-level assembly cost, and optimized single-diode performance for space-constrained freewheeling and output rectification roles.
Availability
HER306G-K is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC/DC converters, and uninterruptible power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HER306G-K 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 devices, and MOSFETs since 1979.
The HER30xG-K series was designed specifically for high-frequency, high-reliability rectification in switching power supplies - emphasizing ultrafast recovery, low VF, and robust surge capability across 50–1000 V voltage grades.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER306G-K?
The HER306G-K has a VRRM rating of 600 V, meaning it reliably blocks up to 600 V of reverse voltage in repetitive operation. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2105), and defines the upper limit for safe operation in rectifier and freewheeling applications without avalanche breakdown.
What is the forward voltage drop (VF) of HER306G-K at 3 A and 25°C?
The HER306G-K exhibits a maximum forward voltage of 1.7 V under conditions of 3 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This VF value is measured using a 0.3 ms pulse test and directly impacts conduction loss and thermal design in high-current power paths.
Does HER306G-K have a specified reverse recovery time (trr)?
Yes, the HER306G-K has a specified reverse recovery time of 75 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This trr value is documented in the Electrical Specifications section and confirms its classification as an ultrafast recovery rectifier suitable for high-frequency switching applications.
What package type does HER306G-K use, and what are its key mechanical attributes?
The HER306G-K uses the DO-201AD package: an axial-leaded, molded plastic case with cathode band marking, UL 94V-0 flammability rating, pure tin-plated leads compliant with J-STD-002, and JESD 201 Class 1A whisker resistance. Its approximate weight is 1.10 g, and it supports standard automated assembly processes.
Is HER306G-K RoHS-compliant and halogen-free?
Yes, HER306G-K is RoHS-compliant and halogen-free in accordance with IEC 61249-2-21. This compliance is explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet and verified through material declarations supporting environmentally regulated electronics manufacturing.
HER306G-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 600 V
- Capacitance @ Vr, F:
- 35pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER306G-K FAQ
1.How can I place an order for HER306G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HER306G-K 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 HER306G-K reliable?
The price and inventory of HER306G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER306G-K is usually 5 days.
3.What payment methods are accepted for HER306G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER306G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER306G-K?
HER306G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER306G-K 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 HER306G-K?
For technical support, including HER306G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER306G-K requirements.
6.How does Aetrix verify that HER306G-K is sourced from the original manufacturer or authorized distributors?
All HER306G-K 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 HER306G-K meets industry standards.
7.What is the process for return or replacement of HER306G-K?
All HER306G-K units undergo pre-shipment inspection (PSI). If there is an issue with HER306G-K, 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 HER306G-K part is unused and in its original packaging.
Return procedure for HER306G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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