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Taiwan Semiconductor Corporation HER305GH
- Part No.:
- HER305GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER305GH.pdf
- Description:
- 50NS, 3A, 400V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
HER305GH from Taiwan Semiconductor is a high-efficiency, AEC-Q101-qualified ultrafast recovery rectifier diode in DO-201AD package, rated for 3 A average forward current, 600 V repetitive peak reverse voltage (VRRM), and 1.3 V forward voltage at 3 A and 25°C - used in automotive DC-DC converters and switching inverters requiring low conduction loss and fast turn-off.
For engineers reviewing the HER305GH datasheet, HER305GH pinout, HER305GH application, or HER305GH equivalent, key selection criteria include its 600 V VRRM, 50 ns reverse recovery time, 125 A surge capability, AEC-Q101 qualification status, and DO-201AD thermal performance (RθJL = 10 °C/W).
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 junction capacitance (CJ = 60 pF at 4 V) minimize switching losses in SMPS topologies operating above 50 kHz.
The HER305GH operates across –55°C to +150°C junction temperature range with 10 °C/W junction-to-lead thermal resistance, enabling reliable operation under sustained 3 A load in constrained thermal environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - supports input stages of 400 V DC bus systems with 50% safety margin |
| IF | 3 A continuous - delivers stable output in compact 12–24 V DC-DC modules |
| trr | 50 ns - enables efficient operation up to 200 kHz switching frequency |
| VF | 1.3 V @ 3 A, 25°C - reduces conduction loss to ≤3.9 W per diode at full load |
| IFSM | 125 A @ 8.3 ms - withstands inrush and fault currents in automotive power supplies |
| RθJL | 10 °C/W - allows direct PCB copper pad heatsinking for thermal management |
| CJ | 60 pF @ 1 MHz, 4 V - limits capacitive coupling noise in high-dv/dt gate drive circuits |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry | Connected to lower-potential node (e.g., switch node or ground return) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive or VIN) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements |
| Ultrafast recovery (50 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in hard-switched converters |
| Low VF (1.3 V) | Improves system efficiency by >1.5% vs. standard FRDs in 3 A/600 V applications |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and automotive ELV directive for sustainable manufacturing |
| 125 A surge rating | Supports cold-crank and load-dump transient immunity in 12 V vehicle systems |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Inverters |
|---|---|
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in EVs and HEVs. IC Role / Device Role / Timing Role: Output freewheeling diode in synchronous or quasi-resonant buck topology. Use Value: 50 ns trr and 600 V VRRM prevent cross-conduction losses and ensure safe operation during 48 V transients. | Use Scenario: Output rectification in 3 kW industrial UPS inverters with 20 kHz PWM switching. IC Role / Device Role / Timing Role: High-frequency unidirectional current path in full-bridge secondary side. Use Value: 1.3 V VF and 10 °C/W RθJL limit thermal rise to <45°C at 3 A, avoiding derating. |
| Solar Microinverters | Server PSU Secondary Side |
Use Scenario: DC link isolation and MPPT-stage rectification in string-level microinverters. IC Role / Device Role / Timing Role: Fast-recovery clamp diode in active clamp flyback or LLC resonant converter. Use Value: 60 pF CJ minimizes EMI generation during high-dv/dt transitions at 100–150 kHz. | Use Scenario: Synchronous rectifier replacement in 48 V to 12 V server VRMs. IC Role / Device Role / Timing Role: Freewheeling diode in multiphase buck converters where gate drive complexity must be minimized. Use Value: AEC-Q101 qualification ensures long-term reliability under continuous 100% load and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | Same DO-201AD package, 600 V VRRM, but trr = 35 ns and VF = 1.7 V @ 3 A | Higher switching speed but higher conduction loss; better for >300 kHz, worse for thermally constrained layouts | Prefer HER305GH when thermal budget is tighter than switching loss budget |
| ON Semi MUR3060 | 600 V, 3 A, trr = 60 ns, VF = 1.25 V, not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select HER305GH for automotive-grade designs requiring certified reliability |
Compared with STTH3L06S and MUR3060, the HER305GH offers balanced trade-off between 50 ns recovery speed and 1.3 V forward drop, while its AEC-Q101 qualification and 10 °C/W thermal resistance make it uniquely suited for space- and thermal-constrained automotive power modules.
Availability
HER305GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching inverters, and solar microinverter designs requiring stable component supply, AEC-Q101 compliance, and consistent DO-201AD lead-forming specifications.
Supply support for HER305GH 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 high-reliability power devices for automotive and industrial markets.
The HER30xG series was developed specifically for high-efficiency, high-reliability rectification in automotive-grade switching power supplies - emphasizing AEC-Q101 qualification, ultrafast recovery, and robust thermal performance in standard packages.
FAQ
What is the peak repetitive reverse voltage rating for HER305GH?
The HER305GH has a repetitive peak reverse voltage (VRRM) rating of 600 V, verified per Taiwan Semiconductor's I2105 datasheet revision. This rating defines the maximum allowable reverse-biased voltage the device can block repeatedly without breakdown, making it suitable for 400 V DC bus applications with standard safety margins. The HER305GH maintains this rating across its full operating temperature range of –55°C to +150°C.
Is HER305GH qualified to AEC-Q101 standards?
Yes, the "H" suffix in HER305GH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering information table. This includes full stress testing for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. HER305GH is approved for use in automotive powertrain and body electronics where reliability under harsh environmental conditions is mandatory.
What is the forward voltage drop of HER305GH at rated current?
The HER305GH exhibits a typical forward voltage (VF) of 1.3 V at 3 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This value increases to approximately 1.45 V at 125°C, reflecting the positive temperature coefficient of silicon PN junctions. The low VF directly contributes to reduced conduction losses in high-current DC-DC stages.
What package type does HER305GH use, and what are its thermal characteristics?
HER305GH uses the DO-201AD axial-leaded package with pure tin-plated leads. Its thermal performance includes a junction-to-lead thermal resistance (RθJL) of 10 °C/W and junction-to-ambient (RθJA) of 35 °C/W. These values enable effective heat transfer through the leads to PCB copper, supporting continuous 3 A operation without additional heatsinking in well-designed layouts.
How does the reverse recovery time of HER305GH compare to other HER30xG variants?
The HER305GH has a reverse recovery time (trr) of 50 ns, matching HER301G–HER304G but faster than HER306G–HER308G (75 ns). This distinction arises from process tuning for mid-voltage devices: lower VRRM variants (≤400 V) and HER305GH prioritize speed, while ≥600 V versions trade some speed for higher voltage blocking capability. All values are measured under identical conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A).
HER305GH 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:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 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
HER305GH FAQ
1.How can I place an order for HER305GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER305GH 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 HER305GH reliable?
The price and inventory of HER305GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER305GH is usually 5 days.
3.What payment methods are accepted for HER305GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER305GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER305GH?
HER305GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER305GH 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 HER305GH?
For technical support, including HER305GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER305GH requirements.
6.How does Aetrix verify that HER305GH is sourced from the original manufacturer or authorized distributors?
All HER305GH 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 HER305GH meets industry standards.
7.What is the process for return or replacement of HER305GH?
All HER305GH units undergo pre-shipment inspection (PSI). If there is an issue with HER305GH, 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 HER305GH part is unused and in its original packaging.
Return procedure for HER305GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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