STMicroelectronics FLC01-200H

Overview

FLC01-200H from STMicroelectronics is a monolithic fire lighter circuit integrating a thyristor, zener diode, rectifier diode, and 2 kΩ resistor in a single IPAK package. It delivers 190 A pulse current (tp = 10 µs), operates up to +120 °C ambient, and features 600 V blocking voltage (VDRM/VRRM) for capacitance discharge ignition in gas cookers and boilers.

For engineers reviewing the FLC01-200H datasheet, FLC01-200H pinout, FLC01-200H application, or FLC01-200H equivalent, key selection criteria include breakover voltage (206–233 V), gate trigger current (5 mA), thermal resistance (100 °C/W), and high-temperature reliability in flame ignition systems.

Technical Context

The FLC01-200H implements a self-triggering capacitance discharge ignition topology: mains AC charges a capacitor via an external rectifier; when voltage reaches the integrated zener's breakdown threshold (206–233 V), current flows into the thyristor gate, firing it to discharge the capacitor through the HV transformer primary.

Its planar silicon structure supports repetitive 190 A surge pulses at 10 µs with 120 A/µs critical di/dt rating, while the monolithic integration eliminates discrete interconnections-reducing failure points in hot, vibration-prone appliance environments where ambient temperatures reach +120 °C.

Key Specifications

Pinout & Package

FLC01-200H uses the IPAK (TO-251AA) package: thermally enhanced 3-pin surface-mount outline with exposed tab (pin 2) for heatsinking. Pin 3 is internally unconnected per datasheet marking note.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar capacitance discharge ignition applications.

Compared with FLC01-200B, the FLC01-200H offers superior thermal anchoring via its larger IPAK tab but requires manual or selective soldering; compared with STTH2R06, it delivers full functional integration-reducing ignition circuit footprint by ~75% and eliminating timing-critical external component tolerances.

Availability

FLC01-200H is available at Aetrix Electronics and suitable for gas cooker ignition, gas boiler pilot lighting, and commercial food warmer systems requiring stable component supply across extended production lifecycles.

Supply support for FLC01-200H 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The FLC01 series belongs to ST's dedicated appliance ignition product line, engineered specifically for high-reliability, high-temperature capacitance discharge circuits in gas-fired equipment-prioritizing monolithic integration, thermal resilience, and long-term parametric stability.

FAQ

What is the function of pin 3 on the FLC01-200H?

Pin 3 is internally not connected (NC), as confirmed in Table 8 (Ordering Information) and Figure 1 of the official ST datasheet (DocID3616 Rev 7). It must remain unconnected on the PCB-no routing, soldering, or grounding is permitted. This NC designation is part of the device's standardized marking scheme for the "01" circuit variant.

Can FLC01-200H operate directly from 110 VAC mains?

Yes-its 600 V VDRM/VRRM rating and 206–233 V breakover voltage allow safe operation with 110 VAC (155 V peak) and 220–240 VAC (311–340 V peak) mains. The Rs/C network must be recalculated using Equation (1) to ensure firing occurs at minimum input voltage; ST's Figure 6 provides design curves for both voltage ranges.

How does the FLC01-200H handle thermal stress in enclosed gas valve assemblies?

It is qualified for continuous operation from −30 °C to +120 °C ambient, with a maximum junction temperature of +125 °C. Its 100 °C/W junction-to-ambient thermal resistance, combined with the IPAK tab's direct PCB copper attachment, enables effective heat dissipation even in sealed metal housings-validated per ST's thermal testing in DocID3616 Rev 7, Table 2.

Is the integrated 2 kΩ resistor laser-trimmed or fixed-value?

The 2 kΩ resistor is a fixed-value polysilicon element integrated monolithically with the thyristor, zener, and diode on the same die. ST's datasheet does not specify laser trimming; tolerance is implied by functional performance-stable breakover voltage and gate drive behavior across temperature confirm its process-controlled value meets ignition timing requirements without external adjustment.