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Taiwan Semiconductor Corporation HT15GH
- Part No.:
- HT15GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT15GH.pdf
- Description:
- 50NS, 1A, 400V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HT15GH from Taiwan Semiconductor is a 1 A, 400 V high-efficiency glass-passivated axial-lead rectifier diode with 1.3 V forward voltage at 1 A and 25°C, 50 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability in freewheeling and DC–DC converter applications.
For engineers reviewing the HT15GH datasheet, HT15GH pinout, HT15GH application, or HT15GH equivalent, key selection criteria include its TS-1 package mechanical compatibility, 30 A surge rating, 150°C max junction temperature, low VF trade-off versus higher-voltage variants, and AEC-Q101 qualification status for under-hood use.
Technical Context
This device is a single-die, standard recovery silicon rectifier optimized for switching-mode power supplies where moderate speed (50 ns trr), low conduction loss (VF = 1.3 V), and robust surge capability (IFSM = 30 A) are prioritized over ultrafast recovery. It uses glass passivation for junction protection and pure tin-plated leads compliant with J-STD-002 solderability.
The HT15GH operates across –55°C to +150°C junction temperature range, exhibits 5 µA max reverse leakage at 25°C and rated VR, and delivers 15 pF junction capacitance at 1 MHz and 4.0 V reverse bias - enabling stable performance in medium-frequency flyback and boost converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse voltage; defines safe blocking capability in 400 V DC bus or 280 V RMS AC input designs |
| IF | 1 A continuous - average forward current rating; supports up to 1 A steady-state conduction without derating at TA ≤ 75°C |
| VF @ 1 A, 25°C | 1.3 V - forward voltage drop; determines conduction loss of 1.3 W per diode at full load, critical for thermal design |
| IFSM (8.3 ms) | 30 A - non-repetitive surge current; withstands inrush or fault transients in SMPS startup or short-circuit conditions |
| trr | 50 ns - reverse recovery time; limits switching losses and EMI in 50–200 kHz converters; faster than HT16GH–HT18GH variants |
| TJ max | +150°C - maximum junction temperature; enables operation in high-ambient automotive engine bay environments |
| RθJA | 95°C/W - junction-to-ambient thermal resistance; requires ≥ 1.5 cm² copper pad for 1 A continuous operation at 70°C ambient |
Pinout & Package
TS-1 package: axial-lead, molded epoxy case meeting UL 94V-0; cathode indicated by band; pure tin-plated leads; weight ≈ 0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); must handle full IF and IFSM |
| Cathode (Lead 2, banded) | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; polarity marking prevents reverse installation in PCB assembly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use per stress test requirements including temperature cycling, HTRB, and UHAST |
| Glass passivated junction | Provides hermetic protection against moisture and contaminants, improving long-term reliability in humid or chemically aggressive environments |
| Low VF (1.3 V @ 1 A) | Reduces conduction loss by ~23% vs. comparable 400 V diodes with VF > 1.7 V, directly lowering heatsink requirements |
| High IFSM (30 A) | Enables robustness against line surges and inrush currents without requiring external fusing in many 12–48 V DC systems |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; supports green manufacturing and end-of-life recycling mandates |
Applications
| Automotive DC–DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V step-down converter in vehicle infotainment or ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or non-synchronous buck topology. Use Value: AEC-Q101 qualification ensures operational stability across –40°C to +125°C ambient; 1.3 V VF minimizes power loss at 1 A load. | Use Scenario: Output rectification in 24 V input industrial SMPS for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side rectifier handling continuous 1 A output current. Use Value: 30 A IFSM withstands repeated cold-start surges; TS-1 package allows manual or wave-solder rework without lead damage. |
| Consumer Flyback Adapters | Telecom Power Rectification |
Use Scenario: 19 V output adapter for laptops using quasi-resonant flyback architecture. IC Role / Device Role / Timing Role: Primary-side snubber clamp or secondary-side output rectifier. Use Value: 50 ns trr reduces switching node ringing and EMI filter burden; 15 pF CJ stabilizes feedback loop behavior. | Use Scenario: -48 V DC distribution rectification in telecom shelf power systems. IC Role / Device Role / Timing Role: OR-ing diode or hold-up rectifier in redundant power feeds. Use Value: 400 V VRRM provides 2× margin over nominal -48 V bus; 5 µA IR at 25°C ensures minimal standby leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04G | Same 1 A / 400 V rating; VF = 1.35 V @ 1 A; trr = 55 ns; TO-220AC package (not TS-1) | Requires PCB footprint change and thermal via redesign; higher RθJA (~65°C/W with heatsink) | Choose when board-level heatsinking is available and axial-leaded form factor is not required. |
| ON Semi MUR140G | 1 A / 400 V; VF = 1.25 V @ 1 A; trr = 75 ns; DO-41 package; no AEC-Q101 qualification | Lacks automotive qualification; slower recovery increases switching loss above 100 kHz | Acceptable for cost-sensitive industrial adapters where AEC-Q101 is not mandated and frequency < 80 kHz. |
Compared with STTH1R04G and MUR140G, the HT15GH uniquely combines AEC-Q101 compliance, TS-1 axial-leaded form factor, and balanced VF/trr performance-making it the preferred choice for space-constrained, automotive-qualified 1 A rectification where leaded reliability and solderability are critical.
Availability
HT15GH is available at Aetrix Electronics and suitable for automotive DC–DC converters, industrial switch-mode power supplies, consumer flyback adapters, and telecom power rectification requiring stable component supply, AEC-Q101 assurance, and TS-1 package compatibility.
Supply support for HT15GH 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors since 1979.
The HT1xG series was designed specifically for high-reliability, medium-voltage rectification in automotive and industrial power conversion - emphasizing AEC-Q101 qualification, glass passivation, and consistent TS-1 packaging across voltage grades.
FAQ
What is the peak repetitive reverse voltage rating of the HT15GH?
The HT15GH has a peak repetitive reverse voltage (VRRM) rating of 400 V. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version H2104). It defines the maximum reverse-biased voltage the HT15GH can block repeatedly without breakdown under normal operating conditions, making it suitable for 280 V RMS AC inputs or 400 V DC bus applications.
Is the HT15GH qualified for automotive applications?
Yes, the HT15GH is AEC-Q101 qualified, as confirmed by the "H" suffix in its ordering code and explicitly stated in the Features section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (UHAST), validating its suitability for under-hood automotive power systems.
What is the forward voltage drop of the HT15GH at 1 A and 25°C?
The forward voltage drop (VF) of the HT15GH is 1.3 V at 1 A forward current and 25°C junction temperature, per the Electrical Specifications table in the official datasheet. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the conduction loss baseline used for thermal and efficiency calculations in power supply designs using the HT15GH.
What package type does the HT15GH use, and what are its key mechanical features?
The HT15GH uses the TS-1 package: an axial-leaded, epoxy-molded case meeting UL 94V-0 flammability rating. Key mechanical features include pure tin-plated leads compliant with J-STD-002 solderability, cathode polarity marked by a band, and a typical weight of 0.200 g. The TS-1 outline is standardized across the HT1xG family for consistent board layout and assembly.
How does the reverse recovery time of the HT15GH compare to other members of the HT1xG family?
The HT15GH has a reverse recovery time (trr) of 50 ns, which is faster than the HT16GH–HT18GH variants (75 ns) but identical to the HT11GH–HT14GH group. This places the HT15GH in the medium-speed rectifier category - optimized for 50–200 kHz switching frequencies - and reflects its targeted use in cost- and efficiency-balanced power topologies where ultrafast recovery is unnecessary.
HT15GH 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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT15GH FAQ
1.How can I place an order for HT15GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HT15GH 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 HT15GH reliable?
The price and inventory of HT15GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT15GH is usually 5 days.
3.What payment methods are accepted for HT15GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT15GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT15GH?
HT15GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT15GH 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 HT15GH?
For technical support, including HT15GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT15GH requirements.
6.How does Aetrix verify that HT15GH is sourced from the original manufacturer or authorized distributors?
All HT15GH 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 HT15GH meets industry standards.
7.What is the process for return or replacement of HT15GH?
All HT15GH units undergo pre-shipment inspection (PSI). If there is an issue with HT15GH, 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 HT15GH part is unused and in its original packaging.
Return procedure for HT15GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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