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Taiwan Semiconductor Corporation HER101GH
- Part No.:
- HER101GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER101GH.pdf
- Description:
- 50NS, 1A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:6,967
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Product details
Overview
HER101GH from Taiwan Semiconductor is a 1 A, 50 V high-efficiency glass-passivated axial-lead rectifier diode in DO-204AL (DO-41) package, featuring 1.0 V forward voltage at 1 A and 50 ns reverse recovery time, used in DC-DC converters and freewheeling paths in automotive-grade power supplies.
For engineers reviewing the HER101GH datasheet, HER101GH pinout, HER101GH application, or HER101GH equivalent, key selection criteria include its AEC-Q101 qualification, 30 A surge rating, 150 °C max junction temperature, low VF, and DO-41 mechanical compatibility with legacy through-hole layouts.
Technical Context
This device is a single-die, silicon planar junction rectifier optimized for high-frequency switching applications. Its glass passivation ensures stable surface characteristics under thermal cycling and humidity stress, while the low trr (50 ns) and low VF support efficient energy transfer in flyback and boost topologies.
The HER101GH operates across –55 °C to +150 °C junction temperature range and delivers 1 A average forward current with 60 °C/W junction-to-ambient thermal resistance. Its 5 µA max reverse leakage at 25 °C and 150 µA at 125 °C enables reliable blocking in high-temperature automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 1 A - Sustains continuous forward conduction in compact power stages without forced cooling |
| VRRM | 50 V - Rated peak reverse voltage; defines maximum blocking capability in low-voltage DC-DC designs |
| VF @ 1 A | 1.0 V - Low conduction loss improves efficiency in 12 V–24 V input systems |
| trr | 50 ns - Enables operation up to ~2 MHz switching frequencies with minimal switching loss |
| IFSM (8.3 ms) | 30 A - Withstands transient inrush and fault currents in automotive load-dump scenarios |
| TJ max | +150 °C - Supports under-hood deployment without derating in AEC-Q101-compliant modules |
| RθJA | 60 °C/W - Predictable thermal rise on standard FR-4 PCBs with 1-inch² copper pour |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode indicated by band; leads are pure tin-plated, solderable per J-STD-002, UL 94V-0 molded compound, 0.330 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit (e.g., switch node in buck converter) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or ground return path in freewheeling configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD |
| Glass passivated junction | Eliminates moisture-induced leakage drift and enhances long-term reliability in humid environments |
| Low VF (1.0 V @ 1 A) | Reduces conduction loss by ~15% vs. standard 1N400x series at same current |
| 50 ns reverse recovery | Minimizes turn-off tail current and associated switching losses in >100 kHz SMPS |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for lead-free reflow and eco-sensitive supply chains |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 5 V/3.3 V for infotainment ECUs and ADAS sensors. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck converter secondary stage. Use Value: HER101GH's 1.0 V VF and 50 ns trr reduce power loss and EMI generation compared to general-purpose rectifiers. | Use Scenario: Auxiliary bias supply in PLC power modules requiring robust 1 A output at 24 V input. IC Role / Device Role / Timing Role: Freewheeling diode across relay coils and inductive loads in control logic circuits. Use Value: HER101GH's 30 A IFSM withstands repeated coil de-energization surges without degradation. |
| Consumer AC-DC Adapters | Telecom Power Rectification |
Use Scenario: Secondary-side rectification in compact 5 W–10 W flyback adapters for IoT gateways. IC Role / Device Role / Timing Role: High-efficiency output rectifier replacing slower, higher-VF alternatives. Use Value: HER101GH's low RθJA and DO-41 footprint enable thermal performance matching SMD equivalents in cost-sensitive designs. | Use Scenario: Input bridge rectification in 48 V telecom backup power modules. IC Role / Device Role / Timing Role: Single-diode element in discrete full-wave bridge configurations. Use Value: HER101GH's 150 °C TJ max and AEC-Q101 qualification ensure field reliability in unventilated telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | Same IF (1 A), VRRM = 600 V, VF = 1.15 V @ 1 A, trr = 50 ns, TO-220AC package | Higher voltage rating suits universal-input AC-DC; larger package requires heatsink for >0.5 A continuous | Select when >50 V blocking or higher surge margin is required; not drop-in due to TO-220 footprint |
| ON Semi MUR105 | Same IF (1 A), VRRM = 50 V, VF = 0.95 V @ 1 A, trr = 75 ns, DO-41 package, no AEC-Q101 | Lacks automotive qualification; slightly faster VF but slower recovery than HER101GH | Use in non-automotive industrial or consumer applications where AEC-Q101 is not mandated |
Compared with STTH1R06 and MUR105, HER101GH uniquely combines AEC-Q101 qualification, DO-41 form factor, and 50 ns trr at 50 V - making it optimal for space-constrained, thermally demanding automotive DC-DC rectification where pin-compatible reliability is critical.
Availability
HER101GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching power supplies, and consumer flyback adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HER101GH 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 automotive, industrial, and consumer markets since 1979.
The HER101GH belongs to TSC's high-efficiency rectifier (HER) product line, engineered specifically for automotive-grade power conversion where reliability, thermal stability, and fast recovery are essential in engine control, body electronics, and ADAS subsystems.
FAQ
What does the "H" suffix in HER101GH signify?
The "H" in HER101GH indicates AEC-Q101 qualification - a rigorous automotive reliability standard covering high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. HER101GH has passed all required tests per Rev. L2104, distinguishing it from non-H variants like HER101G for use in safety-critical vehicle systems.
Is HER101GH compatible with lead-free reflow soldering processes?
Yes, HER101GH uses pure tin-plated leads compliant with J-STD-002 and is rated for lead-free reflow profiles up to 260 °C peak temperature. Its UL 94V-0 molding compound and halogen-free construction meet IPC-J-STD-020 moisture sensitivity level (MSL) 1 requirements, enabling direct placement in standard SMT lines with appropriate pre-bake if stored >12 months.
What is the maximum ambient temperature HER101GH can operate at continuously?
HER101GH supports continuous operation up to +105 °C ambient temperature when mounted on a standard FR-4 PCB with 1-inch² copper pour, based on its RθJA = 60 °C/W and TJ max = +150 °C. At 1 A DC current, junction temperature rise is ~60 °C, leaving 45 °C margin below absolute maximum - sufficient for under-dash automotive locations.
How does HER101GH differ from standard 1N4001 diodes in practical design?
HER101GH offers 50 ns trr versus >2 µs for 1N4001, enabling efficient operation above 100 kHz; its 1.0 V VF at 1 A is ~0.2 V lower than 1N4001, reducing conduction loss by ~20%; and its AEC-Q101 qualification provides validated lifetime data absent in general-purpose diodes - making HER101GH suitable for modern high-frequency, automotive-grade power stages where 1N4001 would overheat or fail prematurely.
Can HER101GH be used in parallel for higher current handling?
No - HER101GH is not designed for parallel operation due to forward voltage mismatch between units, which causes current imbalance and thermal runaway. For >1 A applications, select a higher-rated part such as HER201GH (2 A) or implement active current sharing. The DO-41 package also lacks thermal symmetry needed for stable paralleling without external ballasting resistors.
HER101GH 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):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 15pF @ 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
HER101GH FAQ
1.How can I place an order for HER101GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HER101GH 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 HER101GH reliable?
The price and inventory of HER101GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER101GH is usually 5 days.
3.What payment methods are accepted for HER101GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER101GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER101GH?
HER101GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER101GH 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 HER101GH?
For technical support, including HER101GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER101GH requirements.
6.How does Aetrix verify that HER101GH is sourced from the original manufacturer or authorized distributors?
All HER101GH 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 HER101GH meets industry standards.
7.What is the process for return or replacement of HER101GH?
All HER101GH units undergo pre-shipment inspection (PSI). If there is an issue with HER101GH, 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 HER101GH part is unused and in its original packaging.
Return procedure for HER101GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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