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Taiwan Semiconductor Corporation HER301G R0G
- Part No.:
- HER301G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER301G R0G.pdf
- Description:
- DIODE GEN PURP 50V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,173
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Product details
Overview
HER301G from Taiwan Semiconductor is a high-efficiency, AEC-Q101-qualified ultrafast recovery rectifier diode in DO-201AD package, rated for 3A average forward current, 50V repetitive peak reverse voltage, and 125A surge current. It delivers low forward voltage (1.0V at 3A, 25°C), 50ns reverse recovery time, and operates up to 150°C junction temperature - ideal for automotive DC-DC converters requiring robust freewheeling performance.
For engineers reviewing the HER301G datasheet, HER301G pinout, HER301G application, or HER301G equivalent, key selection criteria include its 50V VRRM, 1.0V VF at rated current, 50ns trr, DO-201AD mechanical compatibility, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This single-die, planar epitaxial ultrafast rectifier uses optimized carrier lifetime control to achieve 50ns reverse recovery time at IF = 0.5A, IR = 1.0A, Irr = 0.25A - significantly faster than standard fast recovery diodes. Its 10°C/W junction-to-lead thermal resistance supports high-power-density layouts in constrained thermal environments.
The device features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and cathode band polarity marking. It is not a Schottky or Zener diode; it is a PN-junction silicon rectifier optimized for switching-mode power supply freewheeling and output rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling circuits |
| IF | 3 A - Continuous average forward current at TC = 75°C; determines heatsink sizing in DC-DC output stages |
| IFSM | 125 A - Peak non-repetitive surge current (8.3ms half-sine); withstands startup/load-dump transients |
| VF | 1.0 V @ 3A, 25°C - Low conduction loss directly reduces power dissipation and improves system efficiency |
| trr | 50 ns - Ultrafast recovery minimizes switching losses and EMI in 100–500 kHz SMPS designs |
| RθJL | 10 °C/W - Enables direct PCB copper pour thermal coupling to reduce junction temperature rise under load |
| Junction Temp | −55°C to +150°C - Supports operation in under-hood automotive environments without derating |
Pinout & Package
DO-201AD axial-leaded package with cathode indicated by a colored band; leads are pure tin-plated and solderable per J-STD-002. Device weight ≈1.10g. No internal terminals - two-terminal device: Anode and Cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to positive side of input source or switch node in freewheeling path |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connects to output rail or inductor return; blocks reverse voltage up to 50V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power supplies |
| Ultrafast 50ns trr | Reduces turn-off switching loss and associated EMI in high-frequency DC-DC converters |
| Low 1.0V VF @ 3A | Lowers conduction loss by ~25% vs. standard FRD counterparts, improving thermal margin |
| 125A IFSM | Survives repeated cold-crank and load-dump surges without degradation |
| DO-201AD with UL 94V-0 epoxy | Enables use in safety-critical automotive modules requiring flame-retardant packaging |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with 250kHz switching frequency. IC Role / Device Role / Timing Role: Output rectifier and freewheeling diode during low-side switch off-time. Use Value: 50ns trr prevents reverse recovery tail current, reducing MOSFET turn-on loss and enabling stable regulation under transient loads. | Use Scenario: 48V-input isolated forward converter powering PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side synchronous rectification assist diode in quasi-resonant topology. Use Value: 1.0V VF limits conduction loss to <0.7W at 3A, easing thermal design on compact PCBs. |
| LED Driver Freewheeling | UPS Inverter Output Stage |
Use Scenario: Constant-current LED driver with boost topology driving 24V string in commercial lighting. IC Role / Device Role / Timing Role: Freewheeling path for inductor current when main switch is off. Use Value: 125A IFSM handles LED short-circuit fault currents without failure, enhancing system safety. | Use Scenario: 60Hz line-frequency inverter output stage in small UPS systems. IC Role / Device Role / Timing Role: Output rectifier in full-wave bridge configuration feeding battery charging circuit. Use Value: −55°C to +150°C operating range ensures reliable operation across indoor/outdoor ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600V VRRM, 3A IF, 65ns trr, TO-220AC package | Higher voltage rating but slower recovery and larger footprint; requires heatsink mounting | Select only if >50V blocking or higher surge immunity is required; not drop-in for DO-201AD board space |
| ON Semi MUR305E | 50V VRRM, 3A IF, 55ns trr, DO-201AD package, no AEC-Q101 qualification | Same mechanical fit and voltage rating, but lacks automotive qualification and has slightly slower recovery | Acceptable for industrial/non-automotive use where AEC-Q101 is not mandated; verify trr tolerance in final layout |
Compared with STTH3L06S and MUR305E, HER301G uniquely combines 50V rating, 50ns recovery, DO-201AD form factor, and AEC-Q101 qualification - making it the only option meeting all three requirements simultaneously for space-constrained automotive power stages.
Availability
HER301G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching power supplies, and LED driver freewheeling applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for HER301G 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 devices, rectifiers, TVS diodes, and protection ICs.
The HER301G belongs to TSC's high-efficiency rectifier (HER) family, engineered specifically for automotive and industrial switching power supplies where low VF, fast trr, and AEC-Q101 reliability are mandatory.
FAQ
What is the maximum junction temperature rating for HER301G?
The HER301G has a maximum junction temperature (TJ) rating of +150°C, with operational capability from −55°C to +150°C. This allows deployment in under-hood automotive environments and high-ambient industrial settings without thermal derating below rated current, provided RθJL = 10°C/W thermal path is maintained to the PCB.
Is HER301G pin-compatible with other HER30xG series diodes?
Yes - all HER301G through HER308G share identical DO-201AD package dimensions, lead spacing, and polarity marking. However, VRRM and trr vary across the series; HER301G (50V, 50ns) is not electrically interchangeable with HER306G (600V, 75ns) without circuit revalidation.
Does HER301G meet RoHS and halogen-free requirements?
Yes - HER301G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and leads are pure tin-plated per J-STD-002, supporting lead-free reflow and wave soldering processes.
What is the reverse recovery time test condition for HER301G?
The specified 50ns reverse recovery time (trr) for HER301G is measured under conditions: IF = 0.5A, IR = 1.0A, Irr = 0.25A, with 1.0MHz test signal and VR = 4.0V for capacitance measurement. These are standardized JEDEC conditions for ultrafast rectifiers.
Can HER301G be used as a direct replacement for 1N5401 in automotive applications?
No - while both are DO-201AD rectifiers, 1N5401 is a general-purpose 100V/3A diode with ~2000ns trr and no AEC-Q101 qualification. HER301G offers 50V rating, 50ns trr, and automotive qualification, making it unsuitable as a drop-in replacement unless circuit timing and reliability requirements are fully reassessed.
HER301G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- 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:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER301G R0G FAQ
1.How can I place an order for HER301G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER301G R0G 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 HER301G R0G reliable?
The price and inventory of HER301G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER301G R0G is usually 5 days.
3.What payment methods are accepted for HER301G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER301G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER301G R0G?
HER301G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER301G R0G 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 HER301G R0G?
For technical support, including HER301G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER301G R0G requirements.
6.How does Aetrix verify that HER301G R0G is sourced from the original manufacturer or authorized distributors?
All HER301G R0G 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 HER301G R0G meets industry standards.
7.What is the process for return or replacement of HER301G R0G?
All HER301G R0G units undergo pre-shipment inspection (PSI). If there is an issue with HER301G R0G, 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 HER301G R0G part is unused and in its original packaging.
Return procedure for HER301G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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