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Taiwan Semiconductor Corporation HER101G R0G
- Part No.:
- HER101G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER101G R0G.pdf
- Description:
- DIODE GEN PURP 50V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,100
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Product details
Overview
HER101G from Taiwan Semiconductor is a 1A, 50V high-efficiency glass-passivated fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 1.0V forward voltage at 1A/25°C, 30A surge capability, and 50ns reverse recovery time - used in DC-DC converters and freewheeling paths.
For engineers reviewing the HER101G datasheet, HER101G pinout, HER101G application, or HER101G equivalent, key selection criteria include VRRM = 50V, IF = 1A, trr = 50ns, thermal resistance RθJA = 60°C/W, and AEC-Q101 qualification availability for automotive-grade variants.
Technical Context
This single-die, axial-leaded rectifier operates with a maximum junction temperature of 150°C and supports repetitive peak reverse voltages up to 50V. Its glass-passivated junction ensures stable performance under thermal cycling and humidity stress.
The device delivers low conduction loss (VF ≤ 1.0V @ 1A, 25°C) and fast switching (trr ≤ 50ns), enabling high-frequency operation in switching-mode power supplies without excessive switching loss or EMI generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in flyback/freewheeling circuits |
| IF | 1 A - Continuous average forward current; sets thermal design margin for PCB trace width and heatsinking |
| IFSM | 30 A - Peak surge current (8.3ms half-sine); determines robustness against inrush and transient overloads |
| trr | 50 ns - Reverse recovery time; enables efficient operation up to ~1 MHz switching frequencies |
| VF | 1.0 V @ 1A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal rise in power stage |
| RθJA | 60 °C/W - Junction-to-ambient thermal resistance; defines required ambient temperature derating for 1A continuous load |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.330 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter freewheel path) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or inductor return; blocks reverse voltage up to 50V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable leakage current (<5 µA @ 25°C) and long-term reliability under humid or high-bias conditions |
| Fast recovery (50 ns) | Reduces switching losses and EMI in SMPS operating above 100 kHz |
| AEC-Q101 qualified option | Validated for automotive under-hood applications requiring extended temperature and vibration endurance |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and J-STD-002 solderability standards for lead-free assembly |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24V at ≤1A. IC Role / Device Role / Timing Role: Unidirectional current conduction path during transformer demagnetization phase. Use Value: Low VF (1.0V) minimizes conduction loss; 50ns trr prevents reverse recovery shoot-through in synchronous designs. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings, solenoids) in H-bridge inverters. IC Role / Device Role / Timing Role: Provides low-impedance return path when main switch turns off, clamping inductive kickback. Use Value: 30A IFSM withstands high-energy transients; DO-41 package allows through-hole mounting on high-current PCB traces. |
| Automotive Body Control Module Power Supply | Industrial AC-DC Auxiliary Rail |
Use Scenario: Input rectification for 12V auxiliary rails in BCMs, where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Converts rectified AC or battery-fed pulsating DC into smoothed DC for LDO or buck regulator input. Use Value: AEC-Q101-qualified variant available; 150°C TJMAX supports under-hood ambient up to 105°C with margin. | Use Scenario: Low-power auxiliary supply (≤1W) derived from mains via capacitive dropper or small transformer. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier in low-cost, low-heat industrial control logic power rails. Use Value: UL 94V-0 molding compound meets safety requirements; pure tin leads ensure reliable reflow soldering. |
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 | VRRM = 600V, trr = 65ns, VF = 1.15V @ 1A - higher voltage rating but slower recovery and higher VF | Targeted at 400–600V PFC or boost stages, not 50V low-voltage outputs | Select only if system requires >50V reverse blocking; HER101G offers better efficiency at 50V. |
| 1N4933 | VRRM = 200V, trr = 200ns, VF = 1.2V @ 1A - standard recovery, higher VF, no AEC-Q101 option | General-purpose replacement where speed and automotive qualification are not critical | HER101G provides 4× faster recovery and lower conduction loss; preferred for high-frequency SMPS. |
Compared with STTH1R06 and 1N4933, HER101G delivers optimal trade-off for 50V-class switching supplies: lowest VF, fastest trr, and AEC-Q101 availability - making it superior for compact, thermally constrained, or automotive-qualified designs.
Availability
HER101G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for HER101G 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 automotive markets since 1979.
The HER101G belongs to TSC's High-Efficiency Rectifier (HER) family, engineered specifically for high-frequency switching power conversion where low VF, fast trr, and thermal robustness are critical.
FAQ
What is the maximum junction temperature rating for HER101G?
The HER101G has a maximum junction temperature (TJMAX) of +150°C, allowing operation in high-ambient environments such as automotive under-hood or enclosed industrial enclosures. Derating begins above 25°C ambient per the forward current derating curve, with full 1A rating maintained up to ~70°C ambient when mounted on standard FR-4 PCB with adequate copper area.
Is HER101G pin-compatible with standard DO-41 rectifiers like 1N4001?
Yes, HER101G uses the DO-204AL (DO-41) package with identical mechanical dimensions and axial lead configuration as 1N4001, enabling direct PCB footprint reuse. However, HER101G offers significantly faster recovery (50ns vs. 30µs) and lower forward voltage (1.0V vs. 1.1V), making it a performance upgrade - not just a drop-in replacement.
Does HER101G meet automotive qualification standards?
The base HER101G is not AEC-Q101 qualified, but Taiwan Semiconductor offers the HER101GH variant - identical electrically and mechanically, with full AEC-Q101 stress testing for temperature cycling, humidity, and mechanical shock. HER101G itself is suitable for non-automotive industrial use; HER101GH is required for automotive body electronics or infotainment power rails.
What is the reverse leakage current specification for HER101G at elevated temperature?
HER101G specifies reverse leakage current (IR) ≤ 5 µA at 25°C and rated VR, rising to ≤ 150 µA at 125°C. This low, well-characterized leakage supports stable operation in high-impedance bias networks and precision hold-up circuits where parasitic current must remain below 200 µA across the full operating temperature range.
How does the thermal resistance of HER101G affect PCB layout?
With RθJA = 60°C/W, HER101G requires ≥ 1 cm² of 2-oz copper pour connected to at least one lead for 1A continuous operation at 70°C ambient. Minimizing trace length between anode/cathode pads and high-current nodes reduces resistive heating, while avoiding thermal isolation under the body ensures effective conduction cooling - critical to maintaining TJ < 150°C.
HER101G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 R0G FAQ
1.How can I place an order for HER101G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER101G R0G 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 R0G reliable?
The price and inventory of HER101G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER101G R0G is usually 5 days.
3.What payment methods are accepted for HER101G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER101G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER101G R0G?
HER101G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER101G R0G 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 R0G?
For technical support, including HER101G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER101G R0G requirements.
6.How does Aetrix verify that HER101G R0G is sourced from the original manufacturer or authorized distributors?
All HER101G R0G 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 R0G meets industry standards.
7.What is the process for return or replacement of HER101G R0G?
All HER101G R0G units undergo pre-shipment inspection (PSI). If there is an issue with HER101G R0G, 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 R0G part is unused and in its original packaging.
Return procedure for HER101G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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