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Taiwan Semiconductor Corporation HER101G-K
- Part No.:
- HER101G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER101G-K.pdf
- Description:
- 50NS, 1A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:6,081
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Product details
Overview
HER101G-K from Taiwan Semiconductor is a 1 A, 50 V high-efficiency glass-passivated fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 30 A surge capability, 1.0 V forward voltage at 1 A, and 50 ns reverse recovery time - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HER101G-K datasheet, HER101G-K pinout, HER101G-K application, or HER101G-K equivalent, key selection criteria include its 50 V repetitive peak reverse voltage, 150 °C max junction temperature, low VF performance at rated current, and DO-41 mechanical compatibility with through-hole PCB layouts.
Technical Context
This single-die, unidirectional silicon rectifier uses a glass-passivated junction to ensure stable reverse leakage (<5 µA at 25 °C) and robust surge tolerance (30 A IFSM). Its 50 ns trr and low RθJA (60 °C/W) support high-frequency switching operation in compact power stages.
The device operates across –55 °C to +150 °C junction range and maintains <150 µA IR at 125 °C, enabling reliable freewheeling and output rectification in thermally constrained industrial and embedded power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 1 A - continuous forward current rating for steady-state conduction in power supply outputs |
| VRRM | 50 V - maximum repetitive reverse voltage before breakdown; defines safe operating margin in 24–48 V systems |
| VF @ 1 A | 1.0 V - forward voltage drop determining conduction loss and thermal load at full rated current |
| trr | 50 ns - reverse recovery time limiting minimum switching frequency and reducing switching losses |
| IFSM | 30 A - non-repetitive surge current handling capability during startup or fault transients |
| TJ max | +150 °C - maximum junction temperature enabling operation in sealed or high-ambient environments |
| RθJA | 60 °C/W - junction-to-ambient thermal resistance defining heatsinking requirements on standard FR-4 PCB |
Pinout & Package
HER101G-K is housed in a DO-204AL (DO-41) axial-leaded package with cathode indicated by a band. Leads are pure tin-plated per J-STD-002, compliant with JESD 201 Class 1A whisker testing and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary or switch node) in rectifier configuration |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output filter capacitor or positive rail; blocks reverse voltage up to 50 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable IR <5 µA at 25 °C and <150 µA at 125 °C, improving long-term reliability in humid or contaminated environments |
| Low VF = 1.0 V @ 1 A | Reduces conduction loss to ~1.0 W at full load, minimizing thermal stress without forced cooling in space-constrained designs |
| Fast trr = 50 ns | Supports switching frequencies up to ~200 kHz in flyback and forward converters while limiting turn-off losses |
| DO-41 mechanical standard | Ensures compatibility with legacy through-hole assembly lines and hand-soldering workflows using standard lead spacing and bend radius |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental compliance mandates for industrial and consumer end equipment |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Used as secondary-side rectifier in isolated 24 V input → 5/12 V output flyback converters powering industrial controllers. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 1.0 V VF minimizes power loss at 1 A load; 50 ns trr prevents excessive switching loss during MOSFET turn-on transitions. | Use Scenario: Placed across inductive loads (e.g., solenoids, relay coils) in 48 V automotive-grade inverters. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for inductor current decay when main switch turns off. Use Value: 30 A IFSM withstands high-energy inductive kickback; DO-41 package allows direct mounting near load for minimal loop inductance. |
| AC-DC Adapter Secondary Rectifier | UPS Battery Charging Stage |
Use Scenario: Rectifies transformer output in universal-input 5 V/2.4 A wall adapters targeting energy efficiency standards (e.g., DoE Level VI). IC Role / Device Role / Timing Role: High-efficiency output rectifier replacing slower general-purpose diodes to reduce conduction loss. Use Value: 1.0 V VF improves full-load efficiency by ~1.5% vs. 1N4001; glass passivation ensures stable performance over 50,000-hour lifetime. | Use Scenario: Integrated into multi-stage battery charging circuits for 12 V sealed lead-acid backup systems in telecom infrastructure. IC Role / Device Role / Timing Role: Isolates charger output from battery during float mode while conducting charge current during bulk phase. Use Value: 150 °C TJ max supports operation inside enclosed UPS enclosures; 5 µA IR at 25 °C limits standby leakage current. |
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, but VRRM = 600 V; VF = 1.15 V @ 1 A; trr = 60 ns; DO-41 package | Higher voltage rating suits 400 V PFC front-ends; higher VF increases conduction loss in low-voltage outputs | Select STTH1R06 only if system requires >50 V reverse margin; HER101G-K remains optimal for ≤50 V secondary-side use. |
| 1N4933 | VRRM = 200 V; VF = 1.2 V @ 1 A; trr ≈ 200 ns; same DO-41 package and RoHS status | Slower recovery increases switching loss above 50 kHz; higher VF reduces efficiency in high-duty-cycle operation | 1N4933 is viable for low-frequency linear supplies but not recommended for modern SMPS where HER101G-K's 50 ns trr delivers measurable loss reduction. |
Compared with STTH1R06 and 1N4933, HER101G-K provides the lowest VF and fastest trr within its 50 V class, making it the most efficient choice for secondary-side rectification in sub-50 V DC-DC and adapter designs - without over-specifying voltage rating or sacrificing thermal performance.
Availability
HER101G-K is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching-mode inverter freewheeling, and AC-DC adapter secondary rectification requiring stable component supply and long-lifecycle availability.
Supply support for HER101G-K 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 industrial, computing, and consumer markets since 1979.
HER101G-K belongs to TSC's HERxG-K high-efficiency rectifier family, engineered specifically for high-frequency switching power supplies where low VF, fast trr, and thermal robustness are critical to efficiency and reliability.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER101G-K?
The HER101G-K has a VRRM of 50 V, meaning it can safely block up to 50 V of reverse voltage repeatedly without breakdown. This rating is confirmed in the Absolute Maximum Ratings table and defines its suitability for secondary-side rectification in ≤48 V systems. Exceeding this voltage risks irreversible junction failure.
What is the forward voltage drop (VF) of HER101G-K at 1 A and 25 °C?
The HER101G-K exhibits a typical forward voltage of 1.0 V at 1 A and 25 °C, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and directly determines conduction loss - e.g., 1.0 W dissipation at full rated current - influencing thermal design and efficiency calculations.
Does HER101G-K have a fast recovery time, and what is its value?
Yes, HER101G-K is a fast recovery rectifier with a reverse recovery time (trr) of 50 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the Electrical Specifications section and enables efficient operation in switching power supplies operating up to ~200 kHz without excessive turn-off losses.
What package type does HER101G-K use, and is it RoHS compliant?
HER101G-K uses the DO-204AL (DO-41) axial-leaded package with pure tin-plated leads solderable per J-STD-002. It is RoHS compliant and halogen-free per IEC 61249-2-21, with UL 94V-0 molding compound and JESD 201 Class 1A whisker resistance - verified in the Mechanical Data section.
What is the surge current rating (IFSM) and junction temperature limit for HER101G-K?
The HER101G-K supports a non-repetitive peak forward surge current (IFSM) of 30 A for an 8.3 ms half-sine wave, and its maximum junction temperature (TJ max) is +150 °C. These ratings are listed in the Absolute Maximum Ratings table and define its robustness during startup surges and operation in thermally demanding enclosures.
HER101G-K 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER101G-K FAQ
1.How can I place an order for HER101G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HER101G-K 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 HER101G-K reliable?
The price and inventory of HER101G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER101G-K is usually 5 days.
3.What payment methods are accepted for HER101G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER101G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER101G-K?
HER101G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER101G-K 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 HER101G-K?
For technical support, including HER101G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER101G-K requirements.
6.How does Aetrix verify that HER101G-K is sourced from the original manufacturer or authorized distributors?
All HER101G-K 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 HER101G-K meets industry standards.
7.What is the process for return or replacement of HER101G-K?
All HER101G-K units undergo pre-shipment inspection (PSI). If there is an issue with HER101G-K, 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 HER101G-K part is unused and in its original packaging.
Return procedure for HER101G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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