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Taiwan Semiconductor Corporation HER105G A0G
- Part No.:
- HER105G A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
HER105G A0G.pdf
- Description:
- DIODE GEN PURP 400V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,736
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Product details
Overview
HER105G A0G from Taiwan Semiconductor is a high-efficiency, glass-passivated silicon rectifier diode in DO-204AL (DO-41) package, rated for 1 A average forward current, 400 V repetitive peak reverse voltage (VRRM), and 30 A non-repetitive surge current (IFSM). It delivers low forward voltage drop (1.3 V at 1 A, 25°C) and fast reverse recovery time (50 ns), making it suitable for switching-mode power supplies and freewheeling paths in automotive-grade DC-DC converters.
For engineers reviewing the HER105G A0G datasheet, HER105G A0G pinout, HER105G A0G application, or HER105G A0G equivalent, key selection criteria include its 400 V VRRM rating, 50 ns trr, DO-41 mechanical compatibility, AEC-Q101 qualification option (via HER105GH variant), and thermal resistance (RθJA = 60°C/W) for thermally constrained board layouts.
Technical Context
This device operates as a single-die, unidirectional, PN-junction rectifier with glass-passivated chip junction for enhanced moisture and contamination resistance. Its 50 ns reverse recovery time enables efficient operation in high-frequency switching topologies up to several hundred kHz, while the 1.3 V forward voltage minimizes conduction losses at 1 A load.
The DO-204AL (DO-41) package supports through-hole mounting with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Junction temperature range spans −55°C to +150°C, and thermal performance is characterized by RθJC = 15°C/W and RθJA = 60°C/W under standard JEDEC conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage the diode blocks without breakdown; defines usable input voltage headroom in AC/DC or DC-DC stages. |
| IF(AV) | 1 A - Continuous average forward current rating; determines steady-state power handling in rectification paths. |
| IFSM | 30 A - Peak non-repetitive surge current capability; supports inrush and transient overload tolerance in power startup. |
| VF @ 1A, 25°C | 1.3 V - Forward voltage drop at rated current; directly impacts conduction loss (P = IF × VF) and thermal design margin. |
| trr | 50 ns - Reverse recovery time; limits minimum switching frequency and reduces switching loss in hard-switched converters. |
| TJ max | +150°C - Maximum junction temperature; sets upper bound for thermal management and derating curves. |
| CJ @ 1MHz, 4V | 15 pF - Junction capacitance; influences high-frequency noise coupling and snubber design in fast-switching circuits. |
Pinout & Package
HER105G A0G is housed in a DO-204AL (DO-41) axial-leaded package with cathode indicated by a band on the body. Leads are pure tin-plated and compliant with J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connects to lower-potential side of circuit (e.g., transformer secondary center-tap or switch node return path). |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connects to output rail or filter capacitor positive; blocks reverse voltage up to 400 V during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humid or contaminated environments by sealing the silicon die surface against moisture ingress and ionic contamination. |
| Low VF (1.3 V @ 1 A) | Reduces conduction loss by ~15–20% compared to standard 1N400x series diodes, improving efficiency in low-voltage, high-current DC-DC outputs. |
| Fast trr (50 ns) | Enables use in 100–500 kHz switching converters without excessive switching loss or EMI generation from slow turn-off. |
| AEC-Q101 qualified variant available | HER105GH meets stress-test requirements for automotive under-hood applications, including temperature cycling, HTRB, and ESD robustness. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive, supporting environmentally regulated industrial and automotive manufacturing. |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Used in secondary-side synchronous or diode-based rectification of isolated flyback or forward converters delivering 3.3–24 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current valve that conducts during transformer reset phase and blocks reverse voltage during primary switch conduction. Use Value: 1.3 V VF and 50 ns trr reduce output stage losses and improve light-load efficiency over legacy 1N540x diodes. | Use Scenario: Placed across inductive loads (e.g., relay coils, motor windings) in half-bridge inverters to clamp inductive kickback. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for stored inductor energy during switch-off transitions. Use Value: 30 A IFSM withstands repeated inductive surges; DO-41 package allows direct PCB mounting near load terminals for minimal loop inductance. |
| Automotive Body Control Module Power Supply | Industrial AC-DC Auxiliary Supply |
Use Scenario: Input rectifier in 12 V automotive auxiliary supplies powering BCM microcontrollers, sensors, and LED drivers. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier converting alternator-derived AC to filtered DC before LDO or buck regulator input. Use Value: AEC-Q101-compatible variant (HER105GH) ensures qualification for under-dash environments; 150°C TJ max supports operation near hot engine bays. | Use Scenario: Primary-side rectifier in universal-input (85–265 VAC) offline SMPS supplying control logic in PLCs and HMIs. IC Role / Device Role / Timing Role: High-voltage rectifier in voltage-doubler or bridge configuration handling 400 V PIV in 230 VAC line applications. Use Value: 400 V VRRM provides 2× safety margin over 230 VAC peak (≈325 V); DO-41 mechanical robustness supports high-volume wave-solder assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06U (STMicroelectronics) | Same DO-41 package, 600 V VRRM, 1.05 V VF @ 1 A, 30 ns trr - faster but higher voltage-rated. | Preferred where higher reverse margin or faster recovery is required (e.g., 400 V bus designs with voltage spikes). | Select STTH1L06U when system-level overvoltage transients exceed 400 V or switching frequency exceeds 300 kHz. |
| ON Semi MUR105 (now onsemi) | DO-41, 400 V VRRM, 1.25 V VF @ 1 A, 75 ns trr - slightly lower VF but slower recovery than HER105G A0G. | Better suited for lower-frequency (<100 kHz), cost-sensitive industrial supplies where trr is less critical. | Choose MUR105 where thermal budget allows higher trr-related losses and AEC-Q101 is not required. |
Compared with STTH1L06U and MUR105, HER105G A0G offers optimal balance of 400 V rating, 1.3 V VF, and 50 ns trr in a widely available DO-41 format - ideal for mid-frequency automotive and industrial SMPS where precise voltage margin and moderate speed are prioritized.
Availability
HER105G A0G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and automotive body control module power supplies requiring stable component supply, consistent DO-41 form factor, and traceable green compound sourcing.
Supply support for HER105G A0G 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 power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.
HER101G–HER108G is TSC's high-efficiency rectifier product line designed specifically for high-frequency switching power conversion, emphasizing low VF, fast trr, and robust packaging for reliability in thermally demanding applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER105G A0G?
The HER105G A0G has a VRRM rating of 400 V, meaning it reliably blocks reverse voltages up to this level under repetitive conditions. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version L2104), and aligns with the "105" designation (10 × 5 = 50 → 400 V per family coding convention). Exceeding 400 V may cause avalanche breakdown or premature failure.
Does HER105G A0G have AEC-Q101 qualification?
The HER105G A0G itself is not AEC-Q101 qualified; however, the HER105GH variant (same die, AEC-Q101 tested) is available in tape-and-reel packaging. The "H" suffix explicitly denotes AEC-Q101 compliance per Taiwan Semiconductor's ordering code table. For automotive under-hood applications, HER105GH must be specified - HER105G A0G is intended for industrial and commercial use.
What is the forward voltage drop (VF) of HER105G A0G at 1 A and 25°C?
The HER105G A0G exhibits a typical forward voltage drop of 1.3 V at 1 A and 25°C, as specified in the Electrical Specifications table under "Forward voltage" with condition IF = 1 A, TJ = 25°C. This value is measured using a 0.3 ms pulse test and represents the conduction loss baseline used for thermal and efficiency calculations in power supply design.
What package type does HER105G A0G use, and what are its key mechanical features?
HER105G A0G uses the DO-204AL (DO-41) axial-leaded package. Key mechanical features include pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, cathode polarity marked by a visible band, and a weight of approximately 0.330 g. The package supports through-hole assembly and meets JESD201 Class 2 whisker resistance requirements.
How does the reverse recovery time (trr) of HER105G A0G compare to standard rectifiers like 1N4007?
The HER105G A0G has a trr of 50 ns, whereas the 1N4007 exhibits >2000 ns - over 40× slower. This fast recovery significantly reduces switching losses and EMI in high-frequency converters. The 50 ns value is verified under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A test conditions per the Taiwan Semiconductor datasheet, confirming its suitability for modern SMPS designs operating above 50 kHz.
HER105G A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 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
HER105G A0G FAQ
1.How can I place an order for HER105G A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER105G A0G 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 HER105G A0G reliable?
The price and inventory of HER105G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER105G A0G is usually 5 days.
3.What payment methods are accepted for HER105G A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER105G A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER105G A0G?
HER105G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER105G A0G 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 HER105G A0G?
For technical support, including HER105G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER105G A0G requirements.
6.How does Aetrix verify that HER105G A0G is sourced from the original manufacturer or authorized distributors?
All HER105G A0G 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 HER105G A0G meets industry standards.
7.What is the process for return or replacement of HER105G A0G?
All HER105G A0G units undergo pre-shipment inspection (PSI). If there is an issue with HER105G A0G, 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 HER105G A0G part is unused and in its original packaging.
Return procedure for HER105G A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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