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Taiwan Semiconductor Corporation HER3L05GH
- Part No.:
- HER3L05GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER3L05GH.pdf
- Description:
- 50NS, 3A, 400V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
HER3L05GH from Taiwan Semiconductor is a 3A, 400V high-efficiency fast recovery rectifier diode in DO-201AD package, featuring low forward voltage (0.91 V typ. @ 3A, 25°C), negligible leakage current (5 µA max @ 25°C), and AEC-Q101 qualification for automotive-grade reliability. It serves as the primary output rectifier in DC-DC converters and freewheeling diode in switching inverters.
For engineers reviewing the HER3L05GH datasheet, HER3L05GH pinout, HER3L05GH application, or HER3L05GH equivalent, key selection criteria include its 400V VRRM, 125A IFSM, 19°C/W RθJL, 50 ns trr, and AEC-Q101 qualification - all critical for high-reliability power conversion designs requiring thermal robustness and fast switching.
Technical Context
This device is a single-die, silicon planar junction fast recovery rectifier optimized for high-frequency switching applications. Its 50 ns reverse recovery time and low junction capacitance (54 pF @ 1 MHz, 4 V) minimize switching losses in SMPS topologies operating above 50 kHz.
The DO-201AD package enables efficient heat transfer via lead conduction (RθJL = 19°C/W), while the pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements - essential for automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 380–400 V DC bus applications |
| IF | 3 A - Continuous average forward current at TL = 75°C; supports sustained 36 W conduction loss in typical PCB layouts |
| IFSM | 125 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients in motor drives |
| VF | 0.91 V typ. @ 3 A, 25°C - Low conduction loss reduces thermal stress and improves system efficiency vs. standard rectifiers |
| trr | 50 ns max - Fast recovery minimizes switching loss and EMI generation in 100–500 kHz SMPS designs |
| RθJL | 19 °C/W - Junction-to-lead thermal resistance enables direct PCB copper pad cooling without heatsink in ≤5 W dissipation |
| IR | 5 µA max @ 400 V, 25°C - Ultra-low leakage preserves efficiency in high-impedance hold-up circuits |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and compliant with JESD201 Class 2 whisker testing. Weight: 1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or filter capacitor positive; blocks 400 V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, UHAST, etc.) |
| Low VF & high IF | Enables 3 A continuous operation with <0.95 V drop, reducing conduction loss by ≥25% vs. legacy 1N5408 |
| 50 ns trr | Supports clean zero-current switching in PFC and LLC resonant converters up to 300 kHz |
| RoHS + halogen-free | Complies with IEC 61249-2-21; suitable for automotive OEM assembly lines with strict material declarations |
| Junction temp limit | 150°C maximum rating allows operation in engine bay ambient up to 105°C with proper board thermal design |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: 12 V to 48 V bidirectional DC-DC converter in 48 V mild hybrid systems. IC Role / Device Role / Timing Role: Primary output rectifier handling 3 A continuous load with transient surges up to 125 A. Use Value: AEC-Q101 qualification and 150°C TJ rating ensure reliability across -40°C to +105°C under-hood conditions. | Use Scenario: Secondary-side rectification in 24 V/5 A industrial AC-DC power supply. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward topology operating at 200 kHz. Use Value: 50 ns trr and 54 pF CJ reduce switching loss and EMI, improving efficiency by 1.2% over standard FR107. |
| Solar Microinverter Inputs | UPS Battery Charging Stages |
Use Scenario: MPPT input stage rectification in string-level solar microinverters. IC Role / Device Role / Timing Role: Input bridge leg diode handling 3 A RMS current with 400 V reverse bias during grid synchronization. Use Value: 400 V VRRM provides 20% margin over 325 V peak PV string voltage, preventing avalanche failure. | Use Scenario: Reverse-polarity protection and freewheeling path in 48 V telecom battery charger. IC Role / Device Role / Timing Role: Isolation diode between charging circuit and backup battery bank. Use Value: 5 µA max IR at 400 V prevents >1 mA standby drain, extending float charge duration by >15%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L04S | Same 3 A / 400 V rating; 55 ns trr; no AEC-Q101 qualification; TO-220AC package | Requires heatsink mounting; not approved for automotive powertrain use | Prefer HER3L05GH where space-constrained DO-201AD layout and automotive qualification are mandatory |
| ON Semi MUR340 | 3 A / 400 V; 60 ns trr; VF = 0.95 V typ.; RoHS but not AEC-Q101 | Higher conduction loss; lacks automotive stress validation | Acceptable for industrial SMPS where qualification and 50 ns speed are non-critical |
Compared with STTH3L04S and MUR340, HER3L05GH uniquely combines AEC-Q101 qualification, 50 ns recovery, and DO-201AD form factor - enabling drop-in replacement in automotive DC-DC modules without layout or thermal redesign.
Availability
HER3L05GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching mode power supplies, and solar microinverter designs requiring stable component supply and long-term lifecycle support.
Supply support for HER3L05GH 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 global automotive, industrial, and consumer markets since 1979.
The HER3L series targets high-reliability power conversion applications, specifically engineered to replace legacy rectifiers with superior efficiency, faster recovery, and automotive-grade qualification - especially in space-constrained, thermally demanding environments.
FAQ
What is the peak repetitive reverse voltage rating of HER3L05GH?
The HER3L05GH has a peak repetitive reverse voltage (VRRM) rating of 400 V. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2105) and defines the maximum reverse-biased voltage the device can block repeatedly without breakdown. It ensures safe operation in 380 V DC bus and 280 V RMS AC applications with appropriate derating.
Is HER3L05GH qualified to AEC-Q101 standards?
Yes, HER3L05GH is explicitly AEC-Q101 qualified, as confirmed by the "H" suffix in its ordering code and the "AEC-Q101 qualified available" feature listed in the official datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making HER3L05GH suitable for automotive powertrain and chassis applications.
What is the forward voltage drop of HER3L05GH at 3 A and 25°C?
The forward voltage drop (VF) of HER3L05GH is 0.91 V (typical) and 1.32 V (maximum) at IF = 3 A and TJ = 25°C, per the Electrical Specifications table. This low VF directly reduces conduction losses in high-current paths, contributing to higher overall system efficiency compared to standard recovery rectifiers.
Does HER3L05GH have a specified reverse recovery time?
Yes, HER3L05GH has a maximum reverse recovery time (trr) of 50 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This parameter is documented in the Electrical Specifications section of the Taiwan Semiconductor datasheet and confirms its suitability for high-frequency switching applications such as PFC and resonant converters.
What package type does HER3L05GH use, and what are its key mechanical features?
HER3L05GH uses the DO-201AD axial-leaded package. Key mechanical features include pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 rated molding compound, polarity indicated by cathode band, and compliance with JESD201 Class 2 whisker testing. Its 1.10 g weight and thermal performance (RθJL = 19°C/W) support reliable PCB-level thermal management.
HER3L05GH 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):
- 400 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.32 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 54pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER3L05GH FAQ
1.How can I place an order for HER3L05GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER3L05GH 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 HER3L05GH reliable?
The price and inventory of HER3L05GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER3L05GH is usually 5 days.
3.What payment methods are accepted for HER3L05GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER3L05GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER3L05GH?
HER3L05GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER3L05GH 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 HER3L05GH?
For technical support, including HER3L05GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER3L05GH requirements.
6.How does Aetrix verify that HER3L05GH is sourced from the original manufacturer or authorized distributors?
All HER3L05GH 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 HER3L05GH meets industry standards.
7.What is the process for return or replacement of HER3L05GH?
All HER3L05GH units undergo pre-shipment inspection (PSI). If there is an issue with HER3L05GH, 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 HER3L05GH part is unused and in its original packaging.
Return procedure for HER3L05GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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