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Taiwan Semiconductor Corporation HT12G A1G
- Part No.:
- HT12G A1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT12G A1G.pdf
- Description:
- DIODE GEN PURP 100V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:3,001
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Product details
Overview
HT12G A1G from Taiwan Semiconductor is a 100V, 1A 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 HT12G A1G datasheet, HT12G A1G pinout, HT12G A1G application, or HT12G A1G equivalent, key selection criteria include repetitive peak reverse voltage (100V), forward voltage consistency across temperature, junction-to-ambient thermal resistance (95°C/W), and TS-1 package compatibility with automated SMT assembly.
Technical Context
This device is a single-die, silicon planar junction rectifier with glass passivation ensuring stable performance under thermal cycling and humidity stress. Its low VF (1.0V typ. @1A, 25°C) and fast trr (≤50ns) support high-frequency switching topologies up to several hundred kHz.
The TS-1 package provides robust mechanical integrity with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band, and the device operates from –55°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum non-repetitive reverse voltage the diode blocks without breakdown |
| IF | 1 A continuous - Rated average forward current under specified thermal conditions |
| IFSM | 30 A - Peak surge current capability for 8.3 ms half-sine wave, critical for inrush handling |
| VF @1A, 25°C | 1.0 V typical - Directly impacts conduction loss and thermal design in power stages |
| trr | ≤50 ns - Enables efficient operation in high-frequency SMPS with minimal switching loss |
| RθJA | 95 °C/W - Defines thermal derating slope; requires heatsinking above ~0.5A in still air |
| TJ max | +150 °C - Maximum allowable junction temperature for reliable long-term operation |
Pinout & Package
TS-1 package: surface-mount, single-ended anode-cathode configuration with cathode indicated by molded band; lead-free, RoHS-compliant, UL 94V-0 molding compound; weight ≈0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node or ground return) |
| Cathode | Forward current exit point | Marked by band; connects to output rail or positive bus; defines polarity in layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Prevents moisture ingress and metallization corrosion, enabling >10-year field life in humid environments |
| AEC-Q101 qualified (A1G suffix) | Validated for automotive under-hood applications including engine control and body electronics |
| Low VF (1.0 V typ.) | Reduces conduction loss by ~15% vs. standard 1N400x series at 1A, lowering thermal load |
| High IFSM (30 A) | Withstands transient overloads without failure-critical in motor drive flyback and PFC stages |
| Halogen-free per IEC 61249-2-21 | Meets automotive OEM material compliance requirements for end-of-life recycling and emissions |
Applications
| Automotive Body Control Module (BCM) | Industrial DC-DC Converter |
|---|---|
Use Scenario: Reverse polarity protection and load dump clamping in 12V BCM power rails. IC Role / Device Role / Timing Role: High-reliability rectifier used as input protection diode and freewheel path for relay coils. Use Value: AEC-Q101 qualification ensures operation at 125°C ambient; 30A surge rating absorbs ISO 7637-2 pulse 5a transients. | Use Scenario: Output rectification in isolated 24V-to-5V flyback converter for PLC I/O modules. IC Role / Device Role / Timing Role: Primary secondary-side rectifier delivering regulated 5V/1A with minimal conduction loss. Use Value: 1.0V VF reduces power dissipation to ≤1W at full load, easing thermal management on compact PCBs. |
| Solar Microinverter Auxiliary Supply | LED Driver Freewheeling Diode |
Use Scenario: Bias supply rectification in microinverter auxiliary power circuit operating at 60–100 kHz. IC Role / Device Role / Timing Role: High-frequency rectifier in self-powered gate driver supply derived from main transformer auxiliary winding. Use Value: ≤50ns trr minimizes reverse recovery loss; TS-1 footprint enables dense layout in space-constrained enclosures. | Use Scenario: Freewheeling path for buck-based constant-current LED drivers in streetlight systems. IC Role / Device Role / Timing Role: Clamp inductive kickback during MOSFET off-time in 200–500 kHz switching LED current regulators. Use Value: 100V VRRM safely handles 48V system transients; 95°C/W RθJA allows direct PCB copper pour cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | Same IF (1A), VRRM (600V), but VF = 1.15V typ. @1A; TO-220AC package | Higher voltage rating suits 48V+ systems; larger TO-220AC requires more board area and manual assembly | Choose STTH1R06 only when >100V blocking is required and thermal mass permits TO-220 mounting |
| ON Semi MUR110E | Same VRRM (100V), IF (1A), VF ≈1.0V, but trr = 75ns; DO-41 package | Slower recovery increases switching loss above 200kHz; axial DO-41 incompatible with automated SMT lines | Select MUR110E only for through-hole prototyping or legacy designs where rework tolerance outweighs efficiency loss |
Compared with STTH1R06 and MUR110E, HT12G A1G delivers optimal balance of low VF, fast trr, AEC-Q101 qualification, and TS-1 SMT compatibility-making it preferred for automotive and high-density industrial power supplies where thermal, size, and reliability constraints converge.
Availability
HT12G A1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, and solar microinverter auxiliary supplies requiring stable component supply, long-lifecycle assurance, and AEC-Q101 compliance.
Supply support for HT12G 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, serving global automotive, industrial, and consumer markets since 1979.
The HT11G–HT18G family was designed specifically for high-reliability, high-efficiency rectification in automotive power systems and industrial switching supplies-emphasizing AEC-Q101 qualification, low VF, and robust thermal performance in compact TS-1 packaging.
FAQ
What is the maximum junction temperature rating for HT12G A1G?
The HT12G A1G has a maximum junction temperature (TJ max) of +150°C, verified per AEC-Q101 stress testing. This rating enables reliable operation in under-hood automotive environments and enclosed industrial enclosures. Derating curves in the datasheet show usable current drops to ~0.6A at 100°C ambient with no heatsink. The HT12G A1G must be mounted on adequate copper area to maintain TJ ≤150°C under full load.
Does HT12G A1G meet automotive qualification standards?
Yes, the "A1G" suffix explicitly denotes AEC-Q101 qualification for discrete semiconductors. HT12G A1G passed stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. It is approved for use in automotive body control modules, lighting systems, and infotainment power supplies-not for safety-critical ADAS or airbag systems.
What does the "A1G" suffix mean in HT12G A1G?
The "A1G" suffix in HT12G A1G indicates two attributes: "A1" signifies AEC-Q101 qualification, and "G" denotes halogen-free construction per IEC 61249-2-21. This distinguishes it from standard HT12G (no AEC-Q101) and HT12GH (AEC-Q101 + halogen-free). HT12G A1G is fully RoHS-compliant and meets automotive OEM material declarations.
What is the forward voltage specification for HT12G A1G at elevated temperature?
HT12G A1G exhibits a typical forward voltage of 1.0V at 1A and 25°C, rising to approximately 0.85V at 125°C due to negative temperature coefficient of silicon PN junctions. This reduction improves thermal stability in high-ambient applications. The datasheet specifies VF ≤1.15V max at 25°C and ≤0.95V max at 125°C-both measured under pulsed conditions (PW = 0.3ms).
Is HT12G A1G compatible with lead-free reflow soldering processes?
Yes, HT12G A1G features pure tin-plated leads qualified per J-STD-002 for solderability and withstands JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) unlimited floor life. Its TS-1 package supports peak reflow temperatures up to 260°C for 10 seconds. The UL 94V-0 molding compound remains stable during standard lead-free reflow profiles without delamination or cracking.
HT12G 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):
- 100 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 @ 100 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
HT12G A1G FAQ
1.How can I place an order for HT12G A1G through Aetrix?
Please submit a Request for Quotation (RFQ) for HT12G 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 HT12G A1G reliable?
The price and inventory of HT12G A1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT12G A1G is usually 5 days.
3.What payment methods are accepted for HT12G A1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT12G A1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT12G A1G?
HT12G A1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT12G 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 HT12G A1G?
For technical support, including HT12G A1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT12G A1G requirements.
6.How does Aetrix verify that HT12G A1G is sourced from the original manufacturer or authorized distributors?
All HT12G 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 HT12G A1G meets industry standards.
7.What is the process for return or replacement of HT12G A1G?
All HT12G A1G units undergo pre-shipment inspection (PSI). If there is an issue with HT12G 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 HT12G A1G part is unused and in its original packaging.
Return procedure for HT12G A1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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