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Taiwan Semiconductor Corporation HT12GH
- Part No.:
- HT12GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
HT12GH.pdf
- Description:
- 50NS, 1A, 100V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:2,526
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Product details
Overview
HT12GH from Taiwan Semiconductor is a 1 A, 100 V high-efficiency glass-passivated axial-lead rectifier diode in TS-1 package, featuring low forward voltage (VF ≤ 1.0 V at 1 A, 25°C), 30 A surge capability (IFSM), 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 HT12GH datasheet, HT12GH pinout, HT12GH application, or HT12GH equivalent, key selection criteria include repetitive peak reverse voltage (VRRM = 100 V), thermal resistance (RθJA = 95 °C/W), junction temperature range (–55 to +150 °C), and RoHS/halogen-free compliance per IEC 61249-2-21.
Technical Context
This device is a single-die, silicon planar junction rectifier with glass passivation ensuring stable leakage performance and high reliability under thermal cycling. Its low VF and fast trr (≤50 ns) support high-frequency switching topologies where conduction loss and reverse recovery losses must be minimized.
The TS-1 package provides axial-leaded mechanical robustness, UL 94V-0 molding compound, pure tin-plated leads compliant with J-STD-002, and meets JESD 201 Class 2 whisker resistance - critical for automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback or boost output stages. |
| IF | 1 A continuous - Rated average forward current at TA = 75°C; determines steady-state power handling without derating. |
| VF | ≤1.0 V @ 1 A, 25°C - Low conduction loss improves efficiency in 12 V/24 V DC-DC outputs and reduces thermal load. |
| IFSM | 30 A @ 8.3 ms - Withstands high-energy transient surges during startup or fault conditions without failure. |
| trr | ≤50 ns - Fast reverse recovery minimizes switching losses and EMI in >100 kHz SMPS designs. |
| RθJA | 95 °C/W - Junction-to-ambient thermal resistance enables natural-convection cooling in compact PCB layouts. |
| TJ max | +150 °C - Extended junction temperature rating supports operation in under-hood automotive modules. |
Pinout & Package
TS-1 package: axial-leaded, molded epoxy case with cathode band marking; lead finish: pure tin, solderable per J-STD-002; weight ≈ 0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); polarity must align with schematic symbol. |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; cathode band visually confirms orientation during manual assembly or AOI inspection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring extended temperature and reliability validation. |
| Glass passivated junction | Prevents moisture ingress and metallization corrosion, enabling >1000 hrs HAST reliability and stable IR over lifetime. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; eliminates brominated flame retardants for safer recycling and manufacturing. |
| UL 94V-0 molding compound | Self-extinguishing encapsulant withstands sustained high-temp exposure in enclosed automotive enclosures. |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: Step-down conversion from 48 V battery to 12 V auxiliary rail in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant buck topology. Use Value: Low VF (≤1.0 V) reduces conduction loss by ~15% vs. standard 1N4007; AEC-Q101 qualification ensures field reliability. |
Use Scenario: Secondary-side rectification in 24 V industrial PLC power modules operating at 200 kHz. IC Role / Device Role / Timing Role: Freewheeling diode across inductive loads and output rectifier in isolated flyback supplies. Use Value: trr ≤50 ns limits switching loss and EMI generation; TS-1 axial leads simplify through-hole rework and thermal pad anchoring. |
| LED Driver Circuits | UPS Battery Charging Stages |
Use Scenario: Constant-current LED string supply with active PFC front-end and buck-derived output. IC Role / Device Role / Timing Role: Input bridge rectifier or output freewheeling diode in constant-current regulator stage. Use Value: TJ max = +150°C allows mounting near heatsinks or on thermally dense LED driver PCBs without derating. |
Use Scenario: AC/DC adapter for 12 V sealed lead-acid battery charging in line-interactive UPS systems. IC Role / Device Role / Timing Role: Primary-side input rectifier in transformer-isolated full-wave bridge configuration. Use Value: IFSM = 30 A handles inrush surges from cold-start capacitors; glass passivation prevents leakage drift during long-term float charge. |
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 | VRRM = 600 V, VF = 1.15 V @ 1 A, TO-220AC package, no AEC-Q101 certification | Higher voltage margin but larger footprint and higher VF; suited for universal-input offline SMPS, not automotive under-hood | Select when >100 V reverse blocking is required and AEC-Q101 is not mandated. |
| ON Semi MUR110E | VRRM = 100 V, VF = 0.95 V @ 1 A, DO-41 package, no AEC-Q101, RθJA = 120 °C/W | Lower VF but higher thermal resistance and non-automotive qualification; limited to ambient < 70°C | Choose for cost-sensitive consumer power adapters where automotive reliability and thermal headroom are not required. |
Compared with STTH1R06 and MUR110E, HT12GH uniquely combines AEC-Q101 qualification, TS-1 axial-leaded form factor, and optimized VF/trr balance for space-constrained automotive DC-DC modules - offering verified reliability without sacrificing efficiency or board-level serviceability.
Availability
HT12GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching power supplies, and LED driver circuits requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for HT12GH 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 high-reliability rectifiers, TVS diodes, and MOSFETs for automotive and industrial markets.
The HT1xG series was designed specifically for high-efficiency, high-reliability rectification in automotive subsystems and industrial power conversion - emphasizing AEC-Q101 compliance, low VF, and robust thermal performance in compact axial packages.
FAQ
What is the maximum junction temperature rating for HT12GH?
The HT12GH has a maximum junction temperature (TJ max) of +150 °C, enabling reliable operation in under-hood automotive environments and thermally dense industrial power modules. This rating is validated per AEC-Q101 stress testing and supported by its 95 °C/W junction-to-ambient thermal resistance. The HT12GH maintains stable electrical parameters up to this limit when mounted per recommended PCB pad layout.
Is HT12GH pin-compatible with standard DO-41 rectifiers?
No - HT12GH uses the TS-1 axial-leaded package with specific lead spacing and body dimensions distinct from DO-41. While both are axial-leaded, TS-1 has tighter mechanical tolerances, UL 94V-0 compound, and JESD 201 Class 2 whisker resistance. Substituting HT12GH into a DO-41 footprint requires PCB land pattern revision and thermal validation.
Does HT12GH meet automotive qualification standards?
Yes - HT12GH is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code. This certification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST), confirming suitability for automotive powertrain and body electronics applications.
What is the typical forward voltage of HT12GH at 1 A and 125°C?
The datasheet specifies VF ≤ 1.0 V at IF = 1 A and TJ = 25°C. At TJ = 125°C, VF decreases slightly due to negative temperature coefficient of silicon diodes; typical value is ~0.85 V. This reduction improves conduction efficiency in high-temperature operation but must be verified with actual thermal design.
Can HT12GH replace HT12G in existing designs?
Yes - HT12GH is the AEC-Q101-qualified version of HT12G, sharing identical electrical specifications (VRRM = 100 V, VF ≤ 1.0 V, trr ≤ 50 ns) and TS-1 mechanical form factor. The "H" suffix adds automotive qualification without altering pinout, footprint, or baseline performance; it is a direct upgrade path for automotive programs.
HT12GH 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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
HT12GH FAQ
1.How can I place an order for HT12GH through Aetrix?
Please submit a Request for Quotation (RFQ) for HT12GH 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 HT12GH reliable?
The price and inventory of HT12GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT12GH is usually 5 days.
3.What payment methods are accepted for HT12GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT12GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HT12GH?
HT12GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HT12GH 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 HT12GH?
For technical support, including HT12GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT12GH requirements.
6.How does Aetrix verify that HT12GH is sourced from the original manufacturer or authorized distributors?
All HT12GH 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 HT12GH meets industry standards.
7.What is the process for return or replacement of HT12GH?
All HT12GH units undergo pre-shipment inspection (PSI). If there is an issue with HT12GH, 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 HT12GH part is unused and in its original packaging.
Return procedure for HT12GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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