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Taiwan Semiconductor Corporation HER3L05G
- Part No.:
- HER3L05G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER3L05G.pdf
- Description:
- DIODE GEN PURP 400V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,311
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Product details
Overview
HER3L05G from Taiwan Semiconductor is a 3A, 400V high-efficiency fast recovery rectifier diode in DO-201AD package, featuring VF = 0.91V (max) at 3.0A/25°C, trr = 50ns, CJ = 54pF at 1MHz/4.0V, and IR ≤ 5µA at 25°C - optimized for DC-DC converters and switching inverters.
For engineers reviewing the HER3L05G datasheet, HER3L05G pinout, HER3L05G application, or HER3L05G equivalent, key selection criteria include peak reverse voltage (400V), surge current rating (125A), thermal resistance (RθJL = 19°C/W), low leakage, and AEC-Q101 qualification availability.
Technical Context
This device is a single-die, silicon planar junction fast recovery rectifier with controlled carrier lifetime to achieve <50ns reverse recovery time while maintaining low forward voltage and negligible leakage. Its DO-201AD package enables high power dissipation (19°C/W junction-to-lead) and supports reflow soldering per J-STD-002.
The HER3L05G operates across -55°C to +150°C junction temperature range and exhibits stable VF performance up to 125°C (0.76V max at 3.0A), making it suitable for thermally constrained industrial and automotive-grade power stages where efficiency and reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling paths |
| IF | 3 A continuous - average forward current rating at TC = 75°C; determines steady-state conduction capability |
| trr | 50 ns - reverse recovery time at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables high-frequency switching up to ~1 MHz |
| VF | 0.91 V max at 3.0A/25°C - forward voltage drop directly impacts conduction loss and thermal design margin |
| IR | 5 µA max at VR = 400V/25°C - ultra-low leakage preserves efficiency in high-impedance bias or hold-up circuits |
| CJ | 54 pF at 1MHz/VR = 4.0V - junction capacitance affects EMI and snubber design in hard-switched topologies |
| RθJL | 19 °C/W - junction-to-lead thermal resistance; enables direct heatsinking via PCB copper pad for >2W dissipation |
Pinout & Package
Package: DO-201AD - axial-leaded, molded plastic case with cathode band marking; 1.10g weight; UL 94V-0 rated compound; pure tin-plated leads compliant with JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of switching node (e.g., MOSFET source or transformer secondary center-tap) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or filter capacitor positive; withstands 400V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | trr ≤ 50 ns enables efficient operation in 100–500 kHz SMPS without excessive switching loss or ringing |
| Low forward voltage | VF = 0.91 V max at 3A/25°C reduces conduction loss by ~15% vs. standard FRDs with VF > 1.05V |
| Negligible leakage current | IR ≤ 5 µA at 400V/25°C minimizes standby power loss in high-voltage hold-up or bias windings |
| AEC-Q101 qualification option | HER3L05GH variant available - meets stress testing requirements for automotive under-hood applications |
| High surge robustness | IFSM = 125 A (8.3 ms half-sine) supports inrush and fault-current handling in industrial power supplies |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side rectification in isolated 48V-to-12V buck-derived converters for telecom and server PSUs. IC Role / Device Role / Timing Role: High-efficiency output rectifier replacing Schottky diodes where 400V VR margin is required. Use Value: 54pF junction capacitance and 50ns trr reduce switching node oscillation and EMI, enabling smaller input filters. | Use Scenario: Freewheeling path in three-phase IGBT-based motor drives operating at 20–100 kHz PWM frequency. IC Role / Device Role / Timing Role: Fast-recovery clamp diode across inductive loads to suppress voltage spikes during turn-off. Use Value: 125A surge rating and 150°C TJ max ensure survival during short-circuit events without thermal runaway. |
| Industrial SMPS | Automotive Power Modules |
Use Scenario: Output rectification in 300W open-frame AC-DC power supplies used in factory automation controllers. IC Role / Device Role / Timing Role: Primary rectifier in high-voltage auxiliary rails (e.g., 24V/3A bias supply). Use Value: RθJL = 19°C/W allows direct mounting on 16mm × 16mm Cu pad for passive thermal management without heatsink. | Use Scenario: HV DC-DC converter in 48V mild-hybrid vehicle battery management systems. IC Role / Device Role / Timing Role: AEC-Q101-qualified (HER3L05GH) rectifier in bidirectional boost/buck stage. Use Value: ≤5µA leakage at 150°C ensures stable operation in under-hood environments with minimal standby drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EYH04-M3 | 400V VRRM, 3A IF, VF = 0.95V max @ 3A, trr = 55ns, DO-201AD | Slightly higher VF and trr; no AEC-Q101 option listed | Preferred where cost sensitivity outweighs marginal efficiency gain; same footprint |
| ON Semiconductor MUR340G | 400V VRRM, 3A IF, VF = 0.98V max @ 3A, trr = 60ns, DO-201AD | Higher VF and slower recovery; RoHS-compliant but not halogen-free | Acceptable for non-automotive industrial use where thermal margin exists |
Compared with VS-3EYH04-M3 and MUR340G, the HER3L05G delivers lower conduction loss (0.91V vs. ≥0.95V) and faster recovery (50ns vs. ≥55ns), yielding measurable efficiency gains in high-duty-cycle 100–300 kHz converters - especially when paired with AEC-Q101 compliance requirements.
Availability
HER3L05G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial SMPS requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for HER3L05G 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 industrial, computing, and automotive markets since 1979.
The HER3LxxG series is part of TSC's high-efficiency rectifier product line, engineered specifically for high-frequency switching power supplies demanding low VF, fast trr, and robust surge capability in compact DO-201AD packages.
FAQ
What is the maximum junction temperature rating for HER3L05G?
The HER3L05G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations when mounted on appropriate copper area. The HER3L05G maintains specified VF and IR performance up to this limit.
Does HER3L05G have AEC-Q101 qualification?
The base HER3L05G is not AEC-Q101 qualified; however, the HER3L05GH variant - identical electrically and mechanically but with enhanced process controls and test screening - is explicitly qualified per AEC-Q101. Customers requiring automotive-grade reliability must specify HER3L05GH, not HER3L05G, in procurement.
What is the reverse recovery time (trr) condition for HER3L05G?
The HER3L05G reverse recovery time is measured under standardized conditions: IF = 0.5A, IR = 1.0A, and Irr = 0.25A, with trr ≤ 50ns. This test reflects real-world commutation behavior in flyback and forward converters. The value is guaranteed maximum and applies at TA = 25°C unless otherwise noted in the datasheet.
How does HER3L05G compare to HER3L06G in terms of forward voltage?
At 3.0A and 25°C, HER3L05G specifies VF ≤ 1.32V, while HER3L06G specifies VF ≤ 1.70V. The higher VRRM (600V) of HER3L06G trades off forward conduction efficiency for greater reverse blocking capability. For 400V-class designs, HER3L05G delivers measurably lower conduction loss and cooler operation than HER3L06G.
What is the junction capacitance (CJ) measurement condition for HER3L05G?
The HER3L05G junction capacitance is specified as 54pF, measured at f = 1.0MHz, VR = 4.0V, and Vsig = 50mVp-p. This small-signal AC parameter is critical for EMI modeling and snubber design in high-frequency switch-mode topologies. It remains stable across temperature and bias within the specified test conditions.
HER3L05G 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER3L05G FAQ
1.How can I place an order for HER3L05G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER3L05G 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 HER3L05G reliable?
The price and inventory of HER3L05G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER3L05G is usually 5 days.
3.What payment methods are accepted for HER3L05G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER3L05G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER3L05G?
HER3L05G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER3L05G 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 HER3L05G?
For technical support, including HER3L05G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER3L05G requirements.
6.How does Aetrix verify that HER3L05G is sourced from the original manufacturer or authorized distributors?
All HER3L05G 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 HER3L05G meets industry standards.
7.What is the process for return or replacement of HER3L05G?
All HER3L05G units undergo pre-shipment inspection (PSI). If there is an issue with HER3L05G, 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 HER3L05G part is unused and in its original packaging.
Return procedure for HER3L05G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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