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STMicroelectronics LIC01-195H
- Part No.:
- LIC01-195H
- Manufacturer:
- STMicroelectronics
- Category:
- DIACs, SIDACs
- Package:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Datasheet:
-
LIC01-195H.pdf
- Description:
- DIAC 195-230V 1.2A IPAK
- Quantity:
- Payment:
- Shipping:
Inventory:8,901
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Product details
Overview
LIC01-195H from STMicroelectronics is a high-voltage bidirectional breakover diode (SIDAC) designed for light ignition circuits in high-intensity discharge lamps. It features a minimum breakover voltage of 195 V, holding current >50 mA, peak surge current capability of 50 A, and operates directly from 220/240 VAC mains-enabling compact, rugged ignitor designs for high-pressure sodium and metal halide lamps.
For engineers reviewing the LIC01-195H datasheet, LIC01-195H pinout, LIC01-195H application, or LIC01-195H equivalent, this device's precise VBO tolerance, thermal stability (α = 0.22 V/°C), and IPAK package suitability for high-surge AC-triggered pulse generation are critical selection criteria.
Technical Context
The LIC01-195H is a monolithic planar-diffused silicon device functioning as a voltage-triggered bilateral switch. Its conduction initiates when applied voltage exceeds VBO (195–230 V at 25°C), transitioning from high-impedance off-state to low-voltage on-state with VTM ≤5 V at 1 A.
It latches in conduction until load current falls below IH ≥50 mA, enabling self-quenching in resonant or capacitive discharge circuits. Thermal resistance Rth(j-c) = 3.5 °C/W supports reliable operation under repetitive 50 A, 10 µs surge pulses in ambient temperatures up to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBO min/max | 195 V / 230 V at 25°C - defines precise AC peak voltage threshold for lamp ignition timing |
| IH min | 50 mA - ensures stable latching and clean turn-off in low-current ballast discharge paths |
| ITRM | ±50 A (10 µs) - sustains repeated high-energy ignition pulses without degradation |
| VDRM/VRRM | 180 V - enables direct connection to 220/240 VAC mains with margin against line transients |
| Rth(j-c) | 3.5 °C/W - allows efficient heat transfer to heatsink in compact IPAK footprint |
| VTM max | 5 V at 1 A - limits power dissipation during conduction, reducing thermal stress |
| α (dVBO/dTj) | 0.22 V/°C - enables predictable VBO drift compensation across –20°C to +125°C operating range |
Pinout & Package
Package: IPAK (TO-251AA), surface-mount, isolated tab (non-connected), 3-pin single-ended configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (MT1) | Main Terminal 1 | Bidirectional anode/cathode terminal - symmetric conduction path; no polarity requirement in AC circuits |
| Pin 2 (A) | Trigger/Gate (unconnected) | No external connection - internal trigger structure is voltage-dependent only; pin left floating per datasheet |
| Pin 3 (MT2) | Main Terminal 2 | Second main terminal - completes bilateral conduction path with MT1; tab is electrically isolated |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic planar diffusion | Enables robust surge handling (50 A, 10 µs) and long-term reliability in humid, high-vibration lamp environments |
| VBO temperature coefficient | 0.22 V/°C - permits accurate ignition timing calibration across industrial ambient ranges (–20°C to +125°C) |
| Direct 220/240 VAC operation | Eliminates need for auxiliary step-down or isolation circuitry in lamp ballast designs |
| IPAK thermal performance | Rth(j-c) = 3.5 °C/W supports >1.2 A RMS current in PCB-mounted configurations without forced cooling |
| Leakage current control | ≤5 µA at 180 V, 25°C - minimizes standby power loss and false triggering in high-impedance networks |
Applications
| High-Pressure Sodium Lamp Ignition | Metal Halide Lamp Flashing Circuit |
|---|---|
Use Scenario: Igniting HPS lamps in street lighting fixtures powered from 220–240 VAC mains with magnetic or electronic ballasts. IC Role / Device Role / Timing Role: Voltage-triggered bilateral switch that fires transformer primary when capacitor voltage reaches VBO, generating kV-level ignition pulses. Use Value: Enables compact, maintenance-free ignitors with precise, repeatable breakdown at 195 V ±35 V, eliminating timing drift over temperature. | Use Scenario: Producing rapid flash sequences in architectural or signage metal halide lamps using capacitive discharge networks. IC Role / Device Role / Timing Role: Self-triggering switch that discharges stored energy into lamp transformer upon reaching VBO, then resets automatically when current drops below IH. Use Value: Provides deterministic, zero-crossing–independent firing with <50 mA holding current ensuring full discharge and consistent flash duration. |
| Lamp Ballast Surge Protection Interface | AC-Powered Stroboscopic Lighting Control |
Use Scenario: Integrating into electromagnetic ballast auxiliary windings to clamp transient overvoltages and initiate controlled lamp strike. IC Role / Device Role / Timing Role: Bidirectional voltage clamp and pulse initiator - conducts only above VBO, clamping spikes while delivering ignition energy. Use Value: Combines protection and ignition in one device, reducing component count and improving system-level EMI immunity via controlled dV/dt turn-on. | Use Scenario: Driving high-repetition-rate stroboscopes in industrial inspection systems powered from standard AC mains. IC Role / Device Role / Timing Role: Repetitive high-surge switch triggered by capacitor charging cycles - delivers synchronized 50 A pulses at user-defined flash rates. Use Value: Supports >1000 flashes/hour with stable VBO and low thermal resistance, preventing thermal runaway during sustained operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-triggered AC ignition applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STLIC01-195H | Same die, identical VBO, IH, and ITRM; rebranded variant with updated marking and traceability | No functional difference - fully interchangeable in legacy and new designs | Select for enhanced lot traceability and extended product lifecycle support |
| NXP BT134-600D | Triac-based; requires gate drive; VDRM = 600 V but lacks intrinsic VBO precision and automatic reset | Suitable for phase-controlled dimming, not self-triggered capacitive ignition | Use only if gate-controlled switching and higher blocking voltage are required; not drop-in |
Compared with STLIC01-195H, the LIC01-195H offers identical electrical behavior but earlier production lineage; versus BT134-600D, it eliminates gate drive complexity and provides tighter VBO tolerance essential for reliable lamp ignition timing.
Availability
LIC01-195H is available at Aetrix Electronics and suitable for high-intensity discharge lamp ignition, AC mains-connected strobe controllers, and electromagnetic ballast interface circuits requiring stable component supply across multi-year production cycles.
Supply support for LIC01-195H 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, and microcontroller solutions for industrial, automotive, and consumer applications.
The LIC01 Series belongs to ST's Application-Specific Discretes (A.S.D.™) portfolio, engineered specifically for high-reliability, high-surge pulse generation in lighting ignition and AC-triggered power control systems.
FAQ
What is the function of Pin 2 on the LIC01-195H?
Pin 2 is an unconnected internal trigger node with no external circuit function. The datasheet explicitly states "DO NOT CONNECT" for Pin 2, as the device relies solely on voltage-dependent breakover between MT1 and MT2. Connecting it risks altering conduction characteristics or causing premature failure.
Can LIC01-195H replace a DIAC in standard lamp ignitor circuits?
Yes - it is a direct functional replacement for standard DIACs like DB3 or BOD120, offering tighter VBO tolerance (195–230 V vs. typical ±30 V spreads), higher ITRM (50 A vs. 1–5 A), and improved thermal robustness. Its IPAK package also supports higher power dissipation than DO-35 packages.
What is the maximum allowable junction temperature during repetitive surge operation?
The absolute maximum operating junction temperature is +125°C. Under repetitive 50 A, 10 µs surges at 120 Hz, junction temperature rise is limited by Rth(j-c) = 3.5 °C/W and case-to-heatsink interface; sustained operation requires maintaining Tj ≤125°C via adequate heatsinking and duty-cycle management.
Is the tab of the LIC01-195H electrically connected to any pin?
No - the IPAK tab is electrically isolated from all pins (MT1, Pin 2, MT2) and serves only as a mechanical mounting and thermal interface. STMicroelectronics' mechanical drawings confirm the tab has no internal metallurgical connection, enabling safe heatsink grounding without shorting the circuit.
LIC01-195H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ASD™
- Package/Case:
- TO-251-3 Short Leads, IPAK, TO-251AA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Voltage - Breakover:
- 195 ~ 230V
- Current - Breakover:
- 500 µA
- Current - Hold (Ih) (Max):
- 50 mA
- Current - Peak Output:
- 1.2 A
- Operating Temperature:
- -20°C ~ 125°C (TJ)
- Supplier Device Package:
- IPAK
LIC01-195H FAQ
1.How can I place an order for LIC01-195H through Aetrix?
Please submit a Request for Quotation (RFQ) for LIC01-195H 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 LIC01-195H reliable?
The price and inventory of LIC01-195H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIC01-195H is usually 5 days.
3.What payment methods are accepted for LIC01-195H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIC01-195H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIC01-195H?
LIC01-195H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIC01-195H 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 LIC01-195H?
For technical support, including LIC01-195H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIC01-195H requirements.
6.How does Aetrix verify that LIC01-195H is sourced from the original manufacturer or authorized distributors?
All LIC01-195H 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 LIC01-195H meets industry standards.
7.What is the process for return or replacement of LIC01-195H?
All LIC01-195H units undergo pre-shipment inspection (PSI). If there is an issue with LIC01-195H, 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 LIC01-195H part is unused and in its original packaging.
Return procedure for LIC01-195H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LIC01-195H Tags
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