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Taiwan Semiconductor Corporation HT15G A1G
- Part No.:
- HT15G A1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT15G A1G.pdf
- Description:
- DIODE GEN PURP 400V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:4,701
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Product details
Overview
HT15G A1G from Taiwan Semiconductor is a 1 A, 400 V glass-passivated high-efficiency rectifier diode in TS-1 package, featuring 1.3 V forward voltage at 1 A and 50 ns reverse recovery time, used in freewheeling paths of DC-DC converters and switching inverters.
For engineers reviewing the HT15G A1G datasheet, HT15G A1G pinout, HT15G A1G application, or HT15G A1G equivalent, this page delivers verified electrical specs, thermal performance, mechanical dimensions, AEC-Q101 qualification status, and direct alternative part comparisons for automotive and industrial power supply design.
Technical Context
This single-die silicon rectifier uses planar junction construction with glass passivation for stable operation up to 150 °C junction temperature. Its 95 °C/W junction-to-ambient thermal resistance and 30 A surge rating support high-reliability operation under repetitive transient loads.
The device exhibits low capacitance (15 pF at 4 V, 1 MHz) and fast switching behavior (50 ns trr), enabling efficient operation in high-frequency switching topologies such as flyback and forward converters where reverse recovery loss must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse voltage; defines safe blocking capability in 400 V-rated DC bus or output stages |
| IF | 1 A - continuous forward current rating; supports steady-state conduction in low-power SMPS outputs |
| IFSM | 30 A - non-repetitive surge current; withstands inrush and fault transients without failure |
| VF @ 1 A, 25°C | 1.3 V - forward voltage drop; determines conduction loss and thermal load at rated current |
| trr | 50 ns - reverse recovery time; limits switching losses and EMI generation in >100 kHz converters |
| RθJA | 95 °C/W - thermal resistance; sets minimum heatsinking requirement for 1 A continuous operation at TA = 70°C |
| CJ @ 4 V, 1 MHz | 15 pF - junction capacitance; affects high-frequency noise coupling and snubber design |
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 ≈ 0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., switch node or ground return) in freewheeling configuration |
| Cathode | Current exit point during forward conduction; marked with band | Connected to higher-potential rail (e.g., output capacitor positive or inductor output) to complete path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable leakage performance and long-term reliability under humidity and thermal cycling stress |
| AEC-Q101 qualified (A1G suffix) | Validated for automotive-grade temperature cycling, mechanical shock, and HTRB stress per AEC standard |
| Halogen-free molding compound | Complies with IEC 61249-2-21; supports RoHS-compliant manufacturing and end-of-life processing |
| Low VF and fast trr combination | Reduces total power loss (conduction + switching) versus standard rectifiers in 100–500 kHz SMPS designs |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC output. Use Value: 1.3 V VF minimizes conduction loss; 50 ns trr reduces switching loss and improves efficiency above 200 kHz. | Use Scenario: Freewheeling path across inductive loads in half-bridge motor drive inverters or LED drivers. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when main switch turns off. Use Value: 30 A IFSM handles motor startup surges; 400 V VRRM covers 310 V DC bus with margin. |
| Automotive Body Control Module Power Supply | Industrial Sensor Signal Conditioning Supply |
Use Scenario: Input rectification in 12 V automotive auxiliary power supplies subjected to load dump and cold crank. IC Role / Device Role / Timing Role: Primary AC/DC interface protecting downstream regulators from reverse polarity and transients. Use Value: AEC-Q101 qualification ensures operation from −40°C to +125°C ambient; glass passivation prevents moisture-induced degradation. | Use Scenario: Auxiliary 5 V or 3.3 V supply rectification in isolated sensor transmitters operating in harsh factory environments. IC Role / Device Role / Timing Role: Converts transformer-isolated AC to stable DC for precision analog front-end circuitry. Use Value: 15 pF CJ minimizes capacitive coupling of switching noise into sensitive analog signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, 1.05 V VF @ 1 A, 50 ns trr, SOD-123FL package | Higher voltage rating but smaller footprint; lower thermal mass limits continuous current derating | Prefer for space-constrained 600 V designs needing same speed but less thermal headroom |
| ON Semi MUR105 | 50 V VRRM, 1.15 V VF @ 1 A, 75 ns trr, DO-41 package | Lower voltage, slower recovery, axial lead; suited for low-cost, low-frequency linear supplies | Select only for ≤50 V, <100 kHz applications where cost outweighs efficiency and size |
Compared with STTH1L06S and MUR105, HT15G A1G offers optimal balance of 400 V rating, 1.3 V VF, 50 ns trr, TS-1 thermal performance, and AEC-Q101 qualification-making it uniquely suitable for automotive and industrial 400 V-class SMPS where reliability and efficiency are jointly critical.
Availability
HT15G A1G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive body control module power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HT15G 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers for automotive, industrial, and consumer markets.
The HT1xG series was designed specifically for high-efficiency, high-reliability rectification in automotive-grade switching power supplies and industrial DC-DC modules operating up to 150 °C junction temperature.
FAQ
What is the peak repetitive reverse voltage rating of HT15G A1G?
The HT15G A1G has a peak repetitive reverse voltage (VRRM) rating of 400 V. This value is confirmed in the Absolute Maximum Ratings table on page 2 of the official Taiwan Semiconductor datasheet (Version H2104). It defines the maximum reverse-biased voltage the device can block repeatedly without breakdown, making HT15G A1G suitable for 400 V-rated output stages and 310 V DC bus freewheeling applications.
Is HT15G A1G qualified for automotive applications?
Yes, HT15G A1G is AEC-Q101 qualified, as indicated by the "A1G" suffix in the ordering code. The "A1" denotes AEC-Q101 compliance, validated through temperature cycling, high-temperature reverse bias, and mechanical shock testing. This makes HT15G A1G appropriate for under-hood and body electronics where reliability under thermal and vibration stress is mandatory.
What is the forward voltage drop of HT15G A1G at 1 A and 25°C?
The forward voltage (VF) of HT15G A1G is 1.3 V at IF = 1 A and TJ = 25°C, per the Electrical Specifications table on page 2 of the datasheet. This value directly determines conduction loss (P = VF × IF) and impacts thermal design-e.g., at 1 A, HT15G A1G dissipates 1.3 W solely from forward conduction under nominal conditions.
What package type does HT15G A1G use, and what are its key mechanical features?
HT15G A1G uses the TS-1 surface-mount package. Key mechanical features include UL 94V-0 compliant epoxy molding, pure tin-plated leads meeting J-STD-002 solderability, cathode polarity marked by a band, and a typical weight of 0.200 g. The TS-1 outline is documented on page 6 of the datasheet and supports automated placement and reflow soldering.
How does the reverse recovery time of HT15G A1G compare to other devices in the HT1xG family?
HT15G A1G has a reverse recovery time (trr) of 50 ns, matching HT11G–HT14G and differing from HT16G–HT18G (75 ns). This faster recovery enables lower switching losses in high-frequency converters. The 50 ns value is measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as specified in the Electrical Specifications table on page 2 of the datasheet for HT15G A1G.
HT15G 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):
- 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:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT15G A1G FAQ
1.How can I place an order for HT15G A1G through Aetrix?
Please submit a Request for Quotation (RFQ) for HT15G 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 HT15G A1G reliable?
The price and inventory of HT15G A1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT15G A1G is usually 5 days.
3.What payment methods are accepted for HT15G A1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT15G A1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT15G A1G?
HT15G A1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT15G 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 HT15G A1G?
For technical support, including HT15G A1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT15G A1G requirements.
6.How does Aetrix verify that HT15G A1G is sourced from the original manufacturer or authorized distributors?
All HT15G 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 HT15G A1G meets industry standards.
7.What is the process for return or replacement of HT15G A1G?
All HT15G A1G units undergo pre-shipment inspection (PSI). If there is an issue with HT15G 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 HT15G A1G part is unused and in its original packaging.
Return procedure for HT15G A1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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