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Taiwan Semiconductor Corporation HER204GH
- Part No.:
- HER204GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
HER204GH.pdf
- Description:
- 50NS, 2A, 300V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:3,498
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Product details
Overview
HER204GH from Taiwan Semiconductor is a 2A, 400V high-efficiency glass-passivated axial-lead rectifier diode with 1.0V forward voltage at 2A, 50ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary output rectifier in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HER204GH datasheet, HER204GH pinout, HER204GH application, or HER204GH equivalent, key selection criteria include its 400V repetitive peak reverse voltage, 60A surge capability, DO-204AC (DO-15) package compatibility, and AEC-Q101 qualification status for harsh-environment deployment.
Technical Context
This device is a single-die, silicon planar junction rectifier with glass passivation for enhanced moisture and contamination resistance. Its low VF (1.0V typ. @ 2A, 25°C) and fast trr (50ns max) enable high-efficiency operation in high-frequency switching topologies.
The HER204GH operates across –55°C to +150°C junction temperature range and exhibits 5µA max reverse leakage at 25°C and rated VR. Thermal resistance RθJA is 60°C/W, supporting conduction-cooled PCB layouts without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost output stages |
| IF | 2 A - Continuous average forward current; supports sustained 2A load in compact SMPS designs |
| IFSM | 60 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and transient overloads |
| VF | 1.0 V (typ.) @ 2A, 25°C - Low conduction loss improves efficiency and reduces thermal stress |
| trr | 50 ns (max) - Fast recovery minimizes switching losses in >100kHz converters |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and sealed industrial enclosures |
| CJ | 35 pF @ 1MHz, 4V - Low junction capacitance reduces EMI generation during turn-off |
Pinout & Package
Package: DO-204AC (DO-15), axial-lead, epoxy-molded, cathode indicated by band. Leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to output rail; blocks reverse voltage up to 400V during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies |
| Glass-passivated junction | Prevents corrosion and parametric drift in humid or chemically aggressive environments |
| Low VF (1.0V typ.) | Reduces conduction loss by ~15% vs. standard FR series at 2A, lowering heatsink requirements |
| Fast trr (50ns max) | Enables efficient operation in 200–500 kHz SMPS without snubber circuitry |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for consumer, industrial, and automotive end-equipment |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12V/24V automotive DC-DC converters delivering up to 2A continuous load. IC Role / Device Role / Timing Role: High-efficiency unidirectional current path; blocks reverse voltage during MOSFET off-time. Use Value: 1.0V VF and 50ns trr reduce power loss and EMI, enabling smaller magnetics and passive filtering. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or solenoids) in H-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive kickback current during PWM dead-time. Use Value: 60A IFSM handles high-energy transients; 400V VRRM accommodates 24V/48V bus systems with margin. |
| On-Board Charger (OBC) Auxiliary Supply | Industrial PLC Power Module |
Use Scenario: Input rectification for auxiliary 5V/12V bias supply in EV on-board chargers operating in under-hood ambient (≥105°C). IC Role / Device Role / Timing Role: AC-to-DC front-end rectifier feeding buck converter; must survive thermal cycling and vibration. Use Value: AEC-Q101 qualification and –55°C to +150°C TJ rating ensure long-term reliability in thermally stressed locations. | Use Scenario: Output rectification in DIN-rail mounted 24V industrial power modules powering I/O modules and sensors. IC Role / Device Role / Timing Role: Primary rectifier in compact, convection-cooled linear or quasi-resonant supplies. Use Value: DO-204AC package enables through-hole mounting with high mechanical robustness; 60°C/W RθJA supports >1W dissipation without heatsink. |
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-HER204G | Same VRRM (400V), IF (2A), trr (50ns), but not AEC-Q101 qualified; RθJA = 65°C/W | Lacks automotive qualification; suitable for commercial/industrial only | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| ON Semiconductor MUR240 | Higher VF (1.3V typ.), same VRRM, slower trr (75ns), AEC-Q101 available only in MUR240G variant | Higher conduction loss and switching loss; requires larger thermal margin | Choose only if HER204GH is unavailable and design can accommodate 0.3V higher VF and 25ns longer trr |
Compared with VS-HER204G and MUR240, the HER204GH delivers identical electrical performance with certified automotive reliability and slightly better thermal resistance-making it the preferred choice where qualification and efficiency are jointly critical.
Availability
HER204GH is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS, and DC-DC converter designs requiring stable component supply, AEC-Q101 compliance, and high surge resilience.
Supply support for HER204GH 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors.
The HER20xG series was designed specifically for high-efficiency, high-reliability rectification in automotive and industrial switching power supplies-emphasizing low VF, fast recovery, and rigorous qualification.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of the HER204GH?
The HER204GH has a VRRM of 400 V, meaning it reliably blocks up to 400 volts of reverse voltage in repetitive operation. This rating is defined per JEDEC standards and verified under specified test conditions. The HER204GH's 400V rating places it between the HER203G (200V) and HER205G (600V) in the family, making it optimal for 24V–48V bus-derived power supplies where margin above nominal voltage is required.
Is the HER204GH AEC-Q101 qualified, and what does that entail?
Yes, the HER204GH is AEC-Q101 qualified-confirmed by the "H" suffix in its ordering code and documented in Taiwan Semiconductor's G2105 specification. This qualification includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life. The HER204GH meets all requirements for discrete semiconductors used in automotive electronic control units, ensuring reliability in under-hood and cabin environments.
What is the forward voltage (VF) of the HER204GH at rated current?
The HER204GH exhibits a typical forward voltage of 1.0 V at 2 A and 25°C junction temperature, with maximum specified at 1.3 V under those conditions. This low VF is achieved via optimized silicon processing and glass passivation, directly reducing conduction losses in high-duty-cycle applications such as DC-DC converter outputs where the HER204GH is commonly deployed.
What package type does the HER204GH use, and is it lead-free?
The HER204GH uses the DO-204AC (DO-15) axial-leaded package with pure tin-plated leads compliant with J-STD-002 solderability requirements. It is RoHS-compliant and halogen-free per IEC 61249-2-21. The cathode is marked by a visible band, and the molding compound meets UL 94V-0 flammability rating-ensuring compatibility with automated through-hole assembly and environmental compliance mandates.
How does the HER204GH compare to the HER204G in terms of specifications and qualification?
The HER204GH shares identical electrical and thermal specifications with the HER204G-including VRRM (400V), IF (2A), trr (50ns), and package-but adds full AEC-Q101 qualification. The "H" suffix explicitly denotes this qualification; otherwise, both parts are functionally interchangeable in non-automotive applications. For designs targeting automotive ASIL-B or functional safety systems, the HER204GH is the mandatory version.
HER204GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 300 V
- Capacitance @ Vr, F:
- 35pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER204GH FAQ
1.How can I place an order for HER204GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER204GH 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 HER204GH reliable?
The price and inventory of HER204GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER204GH is usually 5 days.
3.What payment methods are accepted for HER204GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER204GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER204GH?
HER204GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER204GH 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 HER204GH?
For technical support, including HER204GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER204GH requirements.
6.How does Aetrix verify that HER204GH is sourced from the original manufacturer or authorized distributors?
All HER204GH 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 HER204GH meets industry standards.
7.What is the process for return or replacement of HER204GH?
All HER204GH units undergo pre-shipment inspection (PSI). If there is an issue with HER204GH, 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 HER204GH part is unused and in its original packaging.
Return procedure for HER204GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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