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Taiwan Semiconductor Corporation HT11G A1G
- Part No.:
- HT11G A1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT11G A1G.pdf
- Description:
- DIODE GEN PURP 50V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:6,310
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Product details
Overview
HT11G A1G from Taiwan Semiconductor is a 1A, 50V glass-passivated high-efficiency rectifier diode in TS-1 package, featuring 30A surge capability, 1.0V forward voltage at 1A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or output rectifier in DC-DC converters and switching inverters.
For engineers reviewing the HT11G A1G datasheet, HT11G A1G pinout, HT11G A1G application, or HT11G A1G equivalent, key selection criteria include its 50V VRRM, 95°C/W RθJA, 5µA reverse leakage at 25°C, TS-1 mechanical outline, and AEC-Q101 compliance status - all critical for automotive power supply and industrial SMPS designs.
Technical Context
The HT11G A1G is a single-die, planar-junction silicon rectifier with glass passivation ensuring stable junction performance under thermal cycling and humidity stress. Its 50V repetitive peak reverse voltage and 1.0V typical forward voltage at 1A reflect optimized conduction efficiency for low-voltage, high-current switching applications.
Thermally, it delivers 95°C/W junction-to-ambient resistance in the TS-1 package, enabling operation up to +150°C junction temperature. Reverse recovery time is rated ≤50ns under IF = 0.5A / IR = 1.0A conditions, supporting high-frequency converter topologies without excessive switching loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in DC-DC output stage |
| IF | 1 A continuous - Rated average forward current; determines steady-state power handling in freewheeling paths |
| IFSM | 30 A (8.3ms) - Peak surge capability; supports inrush and transient overload without failure |
| VF | 1.0 V @ 1A, 25°C - Low conduction loss; reduces heat generation and improves system efficiency |
| RθJA | 95 °C/W - Thermal resistance in free-air; informs heatsinking requirements for ambient temperatures up to 75°C |
| IR | 5 µA @ 50V, 25°C - Minimal leakage; preserves battery standby life and prevents unintended discharge paths |
Pinout & Package
TS-1 package: molded epoxy case meeting UL 94V-0, pure tin-plated leads compliant with J-STD-002 solderability, cathode indicated by band, weight ≈0.200g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node or ground return) in rectification path |
| Cathode | Forward current exit point | Marked with band; ties to output rail or positive bus - defines polarity-sensitive placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring extended temperature cycling and vibration robustness |
| Glass passivated junction | Prevents moisture ingress and metallization corrosion - extends lifetime in humid or under-hood environments |
| High surge current capability (30A) | Withstands repeated inductive kickback events in flyback and buck-boost converters without degradation |
| Low forward voltage (1.0V) | Reduces conduction loss by ~15% vs. standard 1N400x series at 1A - lowers thermal load on PCB layout |
Applications
| Automotive DC-DC Converter | Industrial SMPS Output Rectifier |
|---|---|
Use Scenario: 12V-to-5V/3.3V step-down conversion in vehicle infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: AEC-Q101 rating ensures reliability across -40°C to +125°C ambient; 1.0V VF minimizes power loss in compact, unheatsinked layouts. | Use Scenario: Secondary-side rectification in 24V/48V industrial power supplies feeding PLC I/O modules. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward converters. Use Value: 30A IFSM handles repetitive load transients; TS-1 package enables high-density board assembly with automated reflow. |
| LED Driver Freewheeling Diode | UPS Inverter Stage |
Use Scenario: Constant-current LED driver for commercial lighting with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Freewheeling path for inductor current during MOSFET off-time. Use Value: ≤50ns trr limits reverse recovery loss and EMI generation during high-frequency switching (≥100kHz). | Use Scenario: Bidirectional energy transfer in online UPS inverter half-bridge legs. IC Role / Device Role / Timing Role: Anti-parallel clamping diode across IGBTs in H-bridge output stage. Use Value: 95°C/W RθJA allows direct mounting on shared thermal pad; 5µA IR prevents DC bias drift in precision voltage regulation loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06U | 600V VRRM, 1.15V VF @ 1A, TO-220AC package, no AEC-Q101 | Higher voltage rating but larger footprint and higher conduction loss; suited for universal-input AC-DC, not automotive | Select when >50V blocking is required and AEC-Q101 is not mandated |
| ON Semi MUR105 | 50V VRRM, 1.1V VF @ 1A, DO-41 package, no AEC-Q101, 25A IFSM | Same voltage rating but lower surge rating and non-automotive qualification; smaller thermal mass | Choose for cost-sensitive consumer power supplies where TS-1 footprint and AEC-Q101 are unnecessary |
Compared with STTH1R06U and MUR105, the HT11G A1G uniquely combines 50V rating, AEC-Q101 qualification, TS-1 surface-mount compatibility, and 1.0V forward drop - making it the only option validated for space-constrained automotive DC-DC rectification without derating or redesign.
Availability
HT11G A1G is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial SMPS units, LED driver modules, and UPS inverter stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HT11G A1G 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 automotive-qualified components.
The HT11G A1G belongs to TSC's HT1xG family of high-efficiency rectifiers engineered specifically for automotive and industrial switching power supplies where reliability, low VF, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum junction temperature rating for HT11G A1G?
The HT11G A1G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating enables reliable operation in under-hood automotive environments and enclosed industrial enclosures. The HT11G A1G must be thermally managed to ensure junction temperature remains below this limit under worst-case power dissipation and ambient conditions.
Is HT11G A1G pin-compatible with standard DO-41 rectifiers?
No, HT11G A1G uses the TS-1 surface-mount package, not DO-41. Its lead spacing, body dimensions, and thermal pad layout differ significantly - direct replacement requires PCB redesign. The HT11G A1G is intended for automated SMT assembly and offers superior thermal performance over through-hole alternatives due to its lower RθJA.
Does HT11G A1G meet RoHS and halogen-free requirements?
Yes, HT11G A1G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants, and terminal plating uses pure tin without lead or antimony. These specifications are confirmed in the product's mechanical data section and supported by TSC's material declarations for HT11G A1G.
What is the reverse recovery time (trr) specification for HT11G A1G?
The HT11G A1G has a maximum reverse recovery time (trr) of 50 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This fast recovery supports high-frequency switching (>100 kHz) with minimal switching loss and EMI. The HT11G A1G achieves this via optimized doping profile and junction design, distinct from slower general-purpose rectifiers.
How is AEC-Q101 qualification reflected in HT11G A1G ordering code?
The "A1G" suffix in HT11G A1G explicitly denotes AEC-Q101 qualification per TSC's ordering nomenclature - where "A" indicates automotive grade and "1G" confirms full qualification testing (including temperature cycling, HTRB, and ESD). This differs from standard HT11G, which lacks automotive validation. HT11G A1G is traceable to certified lot records and test reports.
HT11G A1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Box (TB)
- 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:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT11G A1G FAQ
1.How can I place an order for HT11G A1G through Aetrix?
Please submit a Request for Quotation (RFQ) for HT11G A1G 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 HT11G A1G reliable?
The price and inventory of HT11G A1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT11G A1G is usually 5 days.
3.What payment methods are accepted for HT11G A1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT11G A1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT11G A1G?
HT11G A1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT11G A1G 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 HT11G A1G?
For technical support, including HT11G A1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT11G A1G requirements.
6.How does Aetrix verify that HT11G A1G is sourced from the original manufacturer or authorized distributors?
All HT11G A1G 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 HT11G A1G meets industry standards.
7.What is the process for return or replacement of HT11G A1G?
All HT11G A1G units undergo pre-shipment inspection (PSI). If there is an issue with HT11G A1G, 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 HT11G A1G part is unused and in its original packaging.
Return procedure for HT11G A1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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