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Taiwan Semiconductor Corporation HT11GH
- Part No.:
- HT11GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT11GH.pdf
- Description:
- 50NS, 1A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:2,407
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Product details
Overview
HT11GH from Taiwan Semiconductor is a 1 A, 50 V glass-passivated high-efficiency rectifier diode in TS-1 package, featuring low forward voltage (VF ≤ 1.0 V at 1 A, 25°C), 30 A surge capability, and AEC-Q101 qualification for automotive-grade reliability in DC-DC converters and freewheeling paths.
For engineers reviewing the HT11GH datasheet, HT11GH pinout, HT11GH application, or HT11GH equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (95 °C/W), junction temperature range (–55 to +150 °C), RoHS/halogen-free compliance, and TS-1 mechanical compatibility with J-STD-002 solderability.
Technical Context
This device is a single-die, standard recovery silicon rectifier optimized for switching-mode power supplies where low conduction loss and robust surge handling are required. Its glass-passivated junction ensures stable performance under thermal cycling and humidity stress.
The TS-1 package provides surface-mount compatibility with pure tin-plated leads, UL 94V-0 molding compound, and polarity indicated by cathode band - enabling automated assembly and automotive-grade board-level reliability without derating at ambient temperatures up to 75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling configurations |
| IF | 1 A continuous - Rated average forward current; determines steady-state power dissipation (P ≈ VF × IF) in DC-DC output stages |
| IFSM | 30 A (8.3 ms half-sine) - Peak surge rating; supports inrush and transient overload without bond-wire failure |
| VF | ≤ 1.0 V @ 1 A, 25°C - Low conduction loss improves efficiency in 12 V input converters and reduces heatsink requirements |
| RθJA | 95 °C/W - Junction-to-ambient thermal resistance; sets maximum power dissipation (≈ 1.05 W at 75°C ambient) before reaching TJMAX |
| TJMAX | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with margin |
| IR | ≤ 5 µA @ 25°C, VR = 50 V - Low leakage preserves efficiency in high-impedance bias networks and standby circuits |
Pinout & Package
TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode band marking; lead finish: pure tin per J-STD-002; weight ≈ 0.200 g; UL 94V-0 compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); must handle full IF and IFSM |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or ground return; withstands full VRRM during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring extended temperature and vibration endurance |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion, ensuring long-term parameter stability in humid environments |
| Low VF (≤ 1.0 V) | Reduces conduction loss by >25% vs. legacy 1 A rectifiers, directly improving light-load efficiency in portable and battery-powered systems |
| JESD 201 Class 2 whisker resistance | Eliminates tin whisker growth risk in high-reliability industrial and automotive PCB assemblies over 15+ year lifetimes |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU directives; enables use in green manufacturing and end-of-life recycling programs |
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 and ADAS sensors. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: AEC-Q101 qualification and 150 °C TJMAX ensure uninterrupted operation under hood temperatures up to 105 °C ambient. | Use Scenario: Auxiliary power supply in PLC controllers and motor drives requiring compact, efficient 1 A output. IC Role / Device Role / Timing Role: Freewheeling diode across relay coils and inductive loads. Use Value: 30 A IFSM safely clamps inductive kickback spikes without degradation, extending system MTBF. |
| Consumer AC-DC Adapters | Telecom Power Modules |
Use Scenario: Secondary-side rectification in low-cost offline SMPS for set-top boxes and routers. IC Role / Device Role / Timing Role: Output rectifier in flyback converter with 50 V output clamp. Use Value: VF ≤ 1.0 V minimizes conduction loss at 1 A load, improving no-load and light-load efficiency to meet Energy Star Tier 2. | Use Scenario: Bias supply rectification in hot-swap controller modules with strict leakage constraints. IC Role / Device Role / Timing Role: High-reliability rectifier in isolated auxiliary rails. Use Value: IR ≤ 5 µA at 25°C prevents standby current drift in always-on telecom management circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | 600 V VRRM, VF = 1.15 V @ 1 A - higher voltage rating but 15% higher conduction loss | Designed for 400 V bus applications; unsuitable for 50 V designs due to excessive capacitance and cost | Select only if future design scaling to ≥400 V is planned; HT11GH offers better efficiency and cost fit for 12–48 V systems |
| MBR140 | Schottky, 40 V VRRM, VF = 0.55 V - lower VF but insufficient reverse voltage margin for 50 V-rated circuits | Used in low-VF, low-noise 3.3/5 V rails; fails catastrophic reverse breakdown above 40 V | Not a drop-in replacement; HT11GH provides necessary 50 V blocking with AEC-Q101 and thermal margin |
Compared with STTH1R06 and MBR140, HT11GH uniquely balances 50 V blocking, AEC-Q101 qualification, and 1.0 V VF - making it the only option validated for automotive 12 V DC-DC rectification where reliability, efficiency, and voltage margin are jointly constrained.
Availability
HT11GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial freewheeling circuits, and consumer AC-DC adapters requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for HT11GH 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 global automotive, industrial, and consumer markets since 1979.
The HT11G–HT18G series was developed specifically for high-reliability rectification in automotive power systems and industrial switching supplies, emphasizing AEC-Q101 qualification, thermal robustness, and consistent VF performance across temperature.
FAQ
What is the maximum junction temperature rating for HT11GH?
The HT11GH has a maximum junction temperature (TJMAX) of +150 °C, verified per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments where ambient temperatures reach 105 °C, provided thermal design maintains junction temperature below this limit. The HT11GH's RθJA of 95 °C/W defines the allowable power dissipation envelope for a given PCB layout and airflow.
Is HT11GH pin-compatible with other devices in the HT1xG family?
Yes, all HT1xG variants (HT11G through HT18G) share identical TS-1 package dimensions, pinout, and thermal footprint. The HT11GH uses the same anode/cathode terminal arrangement and cathode band polarity marking as HT12GH through HT18GH, enabling board-level voltage scalability without layout changes - only the VRRM rating differs across the family.
Does HT11GH meet automotive qualification standards?
Yes, the "H" suffix in HT11GH explicitly denotes AEC-Q101 qualification per Rev H2104 documentation. This includes stress testing for temperature cycling, high-temperature operating life, unbiased highly accelerated stress test (uHAST), and mechanical shock - confirming suitability for automotive powertrain, chassis, and body electronics applications.
What is the forward voltage specification for HT11GH at elevated temperature?
The HT11GH forward voltage remains ≤ 1.0 V at 1 A and 25 °C, and increases predictably with junction temperature per its positive temperature coefficient. At TJ = 125 °C, VF rises to approximately 1.15 V - a value confirmed in the "Typical Forward Characteristics" curve (Fig.4) of the official datasheet, supporting accurate thermal modeling in high-ambient designs.
How does the glass passivation in HT11GH improve long-term reliability?
Glass passivation on the HT11GH's silicon die forms a hermetic barrier against moisture, ionic contaminants, and electrochemical migration. This prevents junction degradation and parameter drift during thermal cycling and high-humidity operation - a critical requirement for automotive modules with 15-year service life expectations and zero field failures in safety-critical subsystems.
HT11GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, 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:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT11GH FAQ
1.How can I place an order for HT11GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HT11GH 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 HT11GH reliable?
The price and inventory of HT11GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT11GH is usually 5 days.
3.What payment methods are accepted for HT11GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT11GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT11GH?
HT11GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT11GH 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 HT11GH?
For technical support, including HT11GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT11GH requirements.
6.How does Aetrix verify that HT11GH is sourced from the original manufacturer or authorized distributors?
All HT11GH 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 HT11GH meets industry standards.
7.What is the process for return or replacement of HT11GH?
All HT11GH units undergo pre-shipment inspection (PSI). If there is an issue with HT11GH, 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 HT11GH part is unused and in its original packaging.
Return procedure for HT11GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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