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Taiwan Semiconductor Corporation HER108GH
- Part No.:
- HER108GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER108GH.pdf
- Description:
- 75NS, 1A, 1000V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:4,986
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Product details
Overview
HER108GH from Taiwan Semiconductor is a high-efficiency, AEC-Q101-qualified ultrafast recovery rectifier diode in DO-204AL (DO-41) package, rated for 1 A average forward current, 1000 V repetitive peak reverse voltage, and 75 ns reverse recovery time at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A - used in automotive-grade DC-DC converters and switching inverters.
For engineers reviewing the HER108GH datasheet, HER108GH pinout, HER108GH application, or HER108GH equivalent, key selection criteria include its 1000 V VRRM rating, 1.7 V max VF at 1 A and 25°C, AEC-Q101 qualification, 30 A IFSM surge capability, and DO-41 mechanical compatibility with legacy through-hole power designs.
Technical Context
This device is a single-die, glass-passivated silicon PN junction rectifier optimized for high-voltage, medium-current switching applications. Its ultrafast trr of 75 ns and low junction capacitance (10 pF at 1 MHz, VR = 4.0 V) minimize switching losses in high-frequency topologies.
The HER108GH operates across –55°C to +150°C junction temperature range with RθJA = 60°C/W and RθJC = 15°C/W, supporting thermally constrained automotive and industrial environments where reliability under transient surge (30 A, 8.3 ms half-sine) is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports primary-side rectification in offline SMPS up to 800 VDC bus with safety margin |
| IF(AV) | 1 A - continuous conduction mode operation in 12–48 V output DC-DC stages |
| trr | 75 ns - enables efficient operation at 100–500 kHz switching frequencies with reduced EMI |
| VF(max) | 1.7 V @ 1 A, 25°C - limits conduction loss to ≤1.7 W per device at full load |
| IFSM | 30 A - withstands inrush and fault currents in automotive cold-crank and load-dump scenarios |
| TJ(max) | +150°C - qualified for under-hood automotive electronics without derating below 125°C ambient |
| IR(max) | 150 µA @ 125°C - ensures low leakage in high-impedance hold-up and sensing circuits |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor positive; blocks 1000 V reverse during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications per stress test requirements |
| Glass passivated junction | Enhances moisture resistance and long-term stability in humid or thermally cycled environments |
| Ultrafast recovery (75 ns) | Reduces switching loss and ringing in high-frequency flyback and forward converters |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally regulated production |
| DO-41 mechanical standardization | Enables drop-in replacement in existing through-hole PCB footprints without layout change |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Inverters |
|---|---|
Use Scenario: 12 V to 48 V bidirectional DC-DC converter in 48 V mild-hybrid vehicle architecture. IC Role / Device Role / Timing Role: Primary-side ultrafast rectifier in synchronous or asymmetrical half-bridge topology. Use Value: 1000 V VRRM and AEC-Q101 rating ensure robustness against load dump transients up to ±120 V. | Use Scenario: Output rectification stage in 3 kW industrial UPS inverter with 400 VDC bus. IC Role / Device Role / Timing Role: Freewheeling diode across IGBT gate drive or output filter choke. Use Value: 75 ns trr minimizes reverse recovery energy loss and prevents cross-conduction in hard-switched H-bridge. |
| Telecom Power Supplies | Renewable Energy Charge Controllers |
Use Scenario: Secondary-side rectification in 48 V telecom rectifier module operating at 200 kHz. IC Role / Device Role / Timing Role: High-voltage output rectifier in phase-shifted full-bridge topology. Use Value: 10 pF junction capacitance reduces capacitive coupling noise into sensitive control circuitry. | Use Scenario: PV array string protection and MPPT-stage freewheeling in 1000 V solar charge controller. IC Role / Device Role / Timing Role: Blocking diode preventing reverse current flow during partial shading events. Use Value: 150 µA max IR at 125°C maintains low standby loss even at elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | 600 V VRRM, 60 ns trr, TO-220AC package | Lacks AEC-Q101 qualification; higher thermal mass but lower VF (1.55 V) | Preferred for non-automotive 600 V systems requiring lower conduction loss and heatsink mounting |
| ES1JH | 600 V VRRM, 35 ns trr, DO-214AA (SMA) package | Surface-mount only; not mechanically or thermally equivalent to DO-41 | Used where board space is constrained and 600 V rating suffices; requires re-layout |
Compared with STTH1R06 and ES1JH, the HER108GH uniquely combines 1000 V rating, AEC-Q101 compliance, and DO-41 through-hole compatibility - making it the only direct-fit solution for automotive 1000 V rectification without redesign or derating.
Availability
HER108GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching inverters, and renewable energy charge controllers requiring stable component supply with full traceability and long-lifecycle support.
Supply support for HER108GH 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 rectifiers, TVS diodes, and MOSFETs for automotive and industrial markets.
The HER101G–HER108G family was designed specifically for AEC-Q101-compliant ultrafast rectification in high-voltage switching power supplies - balancing surge robustness, thermal performance, and manufacturability in standard DO-41 packaging.
FAQ
What is the maximum junction temperature rating for HER108GH?
The HER108GH has a maximum junction temperature (TJ(max)) of +150°C, validated per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive environments up to 125°C ambient when properly heatsinked or mounted on copper pour. The HER108GH's thermal resistance (RθJA = 60°C/W) enables reliable thermal design within this limit.
Is HER108GH pin-compatible with other DO-41 rectifiers like 1N4007?
Yes, HER108GH uses the standard DO-204AL (DO-41) axial package with identical lead spacing and dimensions as 1N4007, enabling mechanical drop-in replacement. However, HER108GH offers ultrafast recovery (75 ns vs. 30 µs), higher VRRM (1000 V vs. 1000 V), and AEC-Q101 qualification - making it functionally superior in switching applications where 1N4007 would fail.
What does the "H" suffix in HER108GH signify?
The "H" suffix in HER108GH indicates full AEC-Q101 qualification per Rev D, including stress tests for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This distinguishes HER108GH from the non-H variant (HER108G), which lacks automotive-grade reliability validation despite identical electrical specs.
What is the typical forward voltage drop of HER108GH at rated current?
The HER108GH exhibits a maximum forward voltage (VF) of 1.7 V at 1 A forward current and 25°C junction temperature, with typical values near 1.5 V. This VF remains stable across –40°C to +125°C operating range, supporting consistent efficiency in automotive thermal profiles. The HER108GH's low VF contributes directly to reduced conduction losses in high-duty-cycle power stages.
Can HER108GH be used in freewheeling applications?
Yes, HER108GH is explicitly recommended for freewheeling applications per Taiwan Semiconductor's official documentation. Its 75 ns reverse recovery time and 30 A surge rating allow safe energy recirculation across inductive loads such as motor windings or transformer primaries in switching converters - minimizing voltage spikes and ensuring reliable turn-off in hard-switched topologies.
HER108GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER108GH FAQ
1.How can I place an order for HER108GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER108GH 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 HER108GH reliable?
The price and inventory of HER108GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER108GH is usually 5 days.
3.What payment methods are accepted for HER108GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER108GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER108GH?
HER108GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER108GH 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 HER108GH?
For technical support, including HER108GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER108GH requirements.
6.How does Aetrix verify that HER108GH is sourced from the original manufacturer or authorized distributors?
All HER108GH 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 HER108GH meets industry standards.
7.What is the process for return or replacement of HER108GH?
All HER108GH units undergo pre-shipment inspection (PSI). If there is an issue with HER108GH, 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 HER108GH part is unused and in its original packaging.
Return procedure for HER108GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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