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Taiwan Semiconductor Corporation HER301GH
- Part No.:
- HER301GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER301GH.pdf
- Description:
- 50NS, 3A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:5,661
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Product details
Overview
HER301GH 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 non-repetitive surge current - used in automotive DC-DC converters and switching power supplies where low forward voltage and fast recovery are critical.
For engineers reviewing the HER301GH datasheet, HER301GH pinout, HER301GH application, or HER301GH equivalent, key selection criteria include its 1.0V max forward voltage at 3A/25°C, 50ns reverse recovery time, 10µA max reverse leakage at 25°C, AEC-Q101 qualification, and DO-201AD mechanical compatibility with high-reliability automotive and industrial power conversion designs.
Technical Context
This device is a single-die, planar passivated silicon rectifier optimized for high-frequency switching applications. Its ultrafast recovery (trr ≤ 50 ns) and low VF (≤ 1.0 V @ 3A, 25°C) reduce conduction and switching losses in SMPS topologies.
Thermally, it features a junction-to-lead resistance of 10°C/W and operates from –55°C to +150°C. The cathode-band polarity marking and pure tin-plated leads comply with J-STD-002 solderability and JESD201 Class 2 whisker requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (AV) | 3 A - supports continuous output current in compact 30W–60W DC-DC stages without forced cooling |
| VRRM | 50 V - suitable for 12V/24V automotive input rails with margin against transients |
| VF (max) | 1.0 V @ 3A, 25°C - reduces conduction loss to ~3W per diode at full load, improving efficiency |
| trr (max) | 50 ns - enables stable operation up to ~200 kHz switching frequency with minimal tail current loss |
| IFSM (8.3 ms) | 125 A - withstands cold-crank and load-dump surge events in automotive environments |
| IR (max) | 10 µA @ 25°C - ensures low standby leakage in always-on vehicle subsystems |
| RθJL | 10 °C/W - allows direct PCB copper pour heatsinking to maintain TJ < 150°C at 3A |
Pinout & Package
Package: DO-201AD - axial-lead, molded plastic case with UL 94V-0 rating, 1.10g mass, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to switch node or transformer secondary in flyback/forward topologies |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output capacitor or common rail; blocks reverse voltage up to 50V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use including temperature cycling, HTRB, and ESD testing per stress test plan |
| Ultrafast recovery (trr ≤ 50 ns) | Minimizes reverse recovery charge (Qrr), reducing EMI and MOSFET turn-on loss in synchronous rectification |
| Low VF (≤ 1.0 V @ 3A) | Lowers thermal stress on PCB layout and eliminates need for parallel diodes in mid-power designs |
| Pure tin-plated leads | Ensures reliable reflow soldering and long-term intermetallic stability per J-STD-002 |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in ADAS camera module with 85°C ambient and 100% duty-cycle operation. IC Role / Device Role / Timing Role: Output freewheeling diode handling 3A continuous current during high-side switch off-time. Use Value: HER301GH's 50ns trr prevents cross-conduction loss with high-side MOSFET, while 1.0V VF limits diode self-heating to <15°C rise over ambient. | Use Scenario: Secondary-side rectifier in 48V-input telecom offline PSU delivering [email protected] with 200kHz PWM. IC Role / Device Role / Timing Role: Unidirectional current path with fast turn-off to suppress ringing and improve regulation. Use Value: HER301GH's 125A IFSM handles startup surges, and 10µA IR avoids output droop during standby sleep mode. |
| Freewheeling in Relay Drivers | UPS Inverter Output Stage |
Use Scenario: Inductive load suppression across 24V solenoid in commercial HVAC control board. IC Role / Device Role / Timing Role: Freewheeling path clamping back-EMF spike when driver MOSFET turns off. Use Value: HER301GH's 50V VRRM exceeds 24V rail + 100% transient margin; 125A IFSM absorbs energy from 100mH coil discharge. | Use Scenario: Half-bridge leg freewheeling diode in 1kVA line-interactive UPS inverter stage. IC Role / Device Role / Timing Role: Conducts reactive current during dead-time and provides path for inductive filter current. Use Value: HER301GH's 10°C/W RθJL enables direct copper pad mounting, sustaining 3A RMS without heatsink at 40°C ambient. |
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 | Choose only if system requires >50V blocking or TO-220 thermal interface |
| ON Semi MUR305E | 50V VRRM, 3A IF, 75ns trr, DO-201AD package | Same package and voltage rating, but 25ns slower recovery and higher VF (1.25V) | Acceptable where 50ns trr is not critical and cost sensitivity outweighs efficiency gain |
Compared with STTH3L06S and MUR305E, HER301GH delivers the fastest recovery (50ns), lowest VF (1.0V), and AEC-Q101 qualification in DO-201AD - making it optimal for space-constrained, high-efficiency automotive and industrial switching converters where reliability and thermal performance are prioritized.
Availability
HER301GH is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC I/O modules, and telecom DC-DC converters requiring stable component supply, AEC-Q101 compliance, and long-lifecycle availability.
Supply support for HER301GH 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 automotive, industrial, and consumer markets since 1979.
The HER301GH belongs to TSC's AEC-Q101 qualified high-efficiency rectifier family, designed specifically for high-frequency, high-reliability power conversion in automotive and harsh-environment industrial systems.
FAQ
What is the maximum junction temperature rating for HER301GH?
The HER301GH has a maximum junction temperature (TJ MAX) of +150°C, validated per AEC-Q101 stress testing. This allows operation in under-hood automotive environments and sealed industrial enclosures. Derating begins above 25°C ambient, with full 3A current supported up to ~95°C case temperature based on its 10°C/W junction-to-lead thermal resistance. HER301GH must be mounted on adequate copper area to maintain safe TJ under continuous load.
Is HER301GH pin-compatible with standard DO-201AD rectifiers like 1N5408?
Yes, HER301GH uses the industry-standard DO-201AD package with identical lead spacing, diameter, and cathode-band polarity marking as 1N5408 and other DO-201AD diodes. However, HER301GH is not a drop-in replacement for 1N5408 due to its ultrafast recovery (50ns vs. ~2000ns) and lower VF (1.0V vs. ~1.2V), which may affect snubber design and EMI filtering. HER301GH requires verification in high-frequency circuits where reverse recovery behavior impacts stability.
Does HER301GH meet automotive qualification standards?
Yes, HER301GH is explicitly AEC-Q101 qualified, as confirmed by the "H" suffix in its ordering code and documentation in Taiwan Semiconductor's I2105 datasheet. It undergoes temperature cycling, high-temperature reverse bias (HTRB), and accelerated moisture resistance testing per AEC-Q101. HER301GH is approved for use in automotive powertrain, body electronics, and ADAS subsystems - not just industrial equivalents.
What is the reverse recovery time (trr) specification for HER301GH?
The HER301GH has a maximum reverse recovery time (trr) of 50 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC test conditions. This ultrafast value is confirmed in the Electrical Specifications table of the official datasheet and distinguishes HER301GH from standard fast recovery diodes. HER301GH's low trr directly reduces switching loss and improves efficiency in 100–300 kHz SMPS designs.
Can HER301GH be used in surface-mount designs?
No, HER301GH is an axial-lead DO-201AD device intended for through-hole mounting only. It does not have gull-wing, J-lead, or DFN variants. While it can be manually soldered onto SMT boards using via-in-pad or adapter carriers, HER301GH lacks IPC-compliant SMT land patterns or reflow profiles. For true SMT alternatives, consider TSC's SOD-123HE or SMAHE packaged rectifiers - HER301GH itself is strictly through-hole.
HER301GH 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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER301GH FAQ
1.How can I place an order for HER301GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER301GH 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 HER301GH reliable?
The price and inventory of HER301GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER301GH is usually 5 days.
3.What payment methods are accepted for HER301GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER301GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER301GH?
HER301GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER301GH 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 HER301GH?
For technical support, including HER301GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER301GH requirements.
6.How does Aetrix verify that HER301GH is sourced from the original manufacturer or authorized distributors?
All HER301GH 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 HER301GH meets industry standards.
7.What is the process for return or replacement of HER301GH?
All HER301GH units undergo pre-shipment inspection (PSI). If there is an issue with HER301GH, 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 HER301GH part is unused and in its original packaging.
Return procedure for HER301GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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