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Taiwan Semiconductor Corporation HT18G A0G
- Part No.:
- HT18G A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT18G A0G.pdf
- Description:
- DIODE GEN PURP 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
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Product details
Overview
HT18G A0G from Taiwan Semiconductor is a 1A, 1000V glass-passivated high-efficiency rectifier diode in TS-1 package, featuring VF = 1.7V at 1A/25°C, IFSM = 30A (8.3ms), TJ max = 150°C, and RθJA = 95°C/W - used in freewheeling paths of automotive DC-DC converters.
For engineers reviewing the HT18G A0G datasheet, HT18G A0G pinout, HT18G A0G application, or HT18G A0G equivalent, key selection criteria include peak reverse voltage rating (1000V), forward voltage consistency at 1A load, surge current robustness (30A), thermal resistance in TS-1 outline, and AEC-Q101 qualification status (not present in A0G variant).
Technical Context
This single-die standard recovery rectifier uses planar junction construction with glass passivation for stable reverse leakage (<5 µA @ 25°C, <150 µA @ 125°C) and controlled reverse recovery time (trr ≤ 75 ns). It operates across -55°C to +150°C junction temperature range and supports repetitive switching in hard-commutated topologies.
The TS-1 package provides pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is marked by cathode band; molding compound meets UL 94V-0 and IEC 61249-2-21 halogen-free requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - blocks up to 1000V reverse voltage without breakdown in repetitive operation |
| IF | 1 A - continuous average forward current rating at TA = 25°C with derating above 25°C |
| VF | 1.7 V @ 1A, 25°C - forward conduction loss directly impacts efficiency in high-frequency switching stages |
| IFSM | 30 A - non-repetitive surge capability during power-up or fault transients (8.3ms half-sine) |
| trr | ≤75 ns - limits switching losses and EMI generation in SMPS freewheeling paths |
| RθJA | 95 °C/W - defines thermal rise from junction to ambient under natural convection on standard PCB pad |
| IR | ≤5 µA @ 25°C - low leakage preserves efficiency in high-impedance bias networks |
Pinout & Package
TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode indicated by molded band; lead finish: pure tin, RoHS-compliant, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter freewheel path) |
| Cathode | Forward current exit point | Marked by band; connects to output rail or inductor return in boost/flyback secondary |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable IR performance and long-term reliability under humidity and thermal cycling |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for industrial and automotive board-level safety compliance |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under mechanical stress and temperature cycling in automotive ECUs |
| Halogen-free per IEC 61249-2-21 | Supports environmentally regulated end markets including EU automotive and industrial equipment |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Inverters |
|---|---|
Use Scenario: 12V-to-48V bidirectional DC-DC conversion in mild-hybrid vehicle power architectures. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectified buck-boost stage handling 1A average current. Use Value: 1000V VRRM margin accommodates transient spikes in 48V bus systems; 1.7V VF minimizes conduction loss at rated load. | Use Scenario: Output rectification in 3kW industrial UPS inverters operating at 20kHz switching frequency. IC Role / Device Role / Timing Role: Uncontrolled rectifier in transformer-isolated secondary stage with forced-air cooling. Use Value: 75ns trr ensures low switching loss contribution; 95°C/W RθJA enables thermal management on 2oz copper pads. |
| Solar Microinverter Auxiliary Supplies | Server PSU Hold-Up Circuits |
Use Scenario: Auxiliary bias supply rectification in photovoltaic microinverters exposed to outdoor thermal cycling (-40°C to +85°C ambient). IC Role / Device Role / Timing Role: Input-stage rectifier feeding isolated flyback controller IC with 1A peak demand. Use Value: -55°C to +150°C TJ range ensures operation across full environmental envelope; glass passivation prevents parametric drift. | Use Scenario: Hold-up capacitor charging path in redundant 12V server PSUs requiring >20ms ride-through during AC dropout. IC Role / Device Role / Timing Role: High-reliability rectifier in offline front-end bridge configuration supplying bulk capacitor. Use Value: 30A IFSM withstands inrush surges during cold-start; RoHS/halogen-free compliance meets datacenter sustainability mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | 600V VRRM, VF = 1.15V @ 1A, TO-277 package, no AEC-Q101 option | Limited to ≤600V systems; lower VF reduces conduction loss but insufficient for 1000V bus designs | Select when system VR does not exceed 600V and lower VF is prioritized over voltage margin |
| ON Semi MUR110E | 1000V VRRM, VF = 1.7V @ 1A, DO-41 package, trr = 75ns, no TS-1 footprint | Through-hole mounting requires PCB redesign; same electrical specs but incompatible mechanical interface | Choose only if legacy through-hole assembly is mandated and thermal budget allows higher RθJA |
Compared with STTH1R06 and MUR110E, HT18G A0G uniquely combines 1000V rating, TS-1 SMT compatibility, and 95°C/W thermal resistance - enabling compact, high-density 48V/1000V auxiliary supplies without layout or qualification trade-offs.
Availability
HT18G A0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial inverters, and solar microinverter auxiliary supplies requiring stable component supply and long-lifecycle support.
Supply support for HT18G 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, serving automotive, industrial, and consumer markets since 1979.
The HT11G–HT18G series targets high-reliability rectification in harsh-environment power conversion, emphasizing voltage scalability (50V–1000V), thermal robustness, and automotive-grade process controls - even in non-AEC variants like HT18G A0G.
FAQ
What is the maximum junction temperature rating for HT18G A0G?
The HT18G A0G has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings table. This rating applies across its full operating current range and enables use in under-hood automotive environments and thermally constrained industrial enclosures. Derating begins above 25°C ambient per the forward current derating curve in the datasheet. Thermal design must respect the 95°C/W junction-to-ambient resistance to avoid exceeding this limit in actual application.
Does HT18G A0G meet AEC-Q101 qualification?
No, HT18G A0G does not meet AEC-Q101 qualification. The "A0G" suffix denotes TS-1 packaging in ammo box format without the "H" suffix (e.g., HT18GH), which is required for AEC-Q101. Only variants marked with "H" in the ordering code are AEC-Q101 qualified. HT18G A0G retains the same die and glass passivation as qualified versions but lacks the extended test program required for automotive grade certification.
What is the reverse recovery time (trr) specification for HT18G A0G?
The HT18G A0G has a maximum reverse recovery time (trr) of 75 ns, measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This value is confirmed in the Electrical Specifications table for HT16G–HT18G devices. The trr directly affects switching loss and EMI in high-frequency converters; designers should verify layout parasitics do not degrade this performance in actual circuits.
How does the forward voltage (VF) of HT18G A0G compare across temperature?
The HT18G A0G exhibits a typical VF of 1.7V at 1A and 25°C, with positive temperature coefficient behavior - VF decreases slightly as junction temperature rises. This characteristic is consistent with silicon PN-junction rectifiers and improves conduction efficiency at elevated temperatures. The datasheet does not specify VF at higher TJ, but the forward characteristics curve (Fig.4) confirms monotonic reduction up to 125°C.
What packaging options are available for HT18G A0G?
HT18G A0G is supplied in 3,000-piece ammo boxes, as indicated by the "A0G" suffix in the ordering code. This contrasts with the "HT18G" base part (5,000/reel, tape-and-reel) and "HT18GH" (AEC-Q101, 5,000/reel). All variants use the TS-1 package outline. Ammo box packaging supports manual or semi-automated placement where reel feed is impractical, such as low-volume prototyping or repair operations.
HT18G A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT18G A0G FAQ
1.How can I place an order for HT18G A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HT18G 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 HT18G A0G reliable?
The price and inventory of HT18G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT18G A0G is usually 5 days.
3.What payment methods are accepted for HT18G A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT18G A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT18G A0G?
HT18G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT18G 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 HT18G A0G?
For technical support, including HT18G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT18G A0G requirements.
6.How does Aetrix verify that HT18G A0G is sourced from the original manufacturer or authorized distributors?
All HT18G 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 HT18G A0G meets industry standards.
7.What is the process for return or replacement of HT18G A0G?
All HT18G A0G units undergo pre-shipment inspection (PSI). If there is an issue with HT18G 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 HT18G A0G part is unused and in its original packaging.
Return procedure for HT18G A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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