Littelfuse AC series and CG3 series two-electrode gas plasma arrester (GDT) products provide a high degree of surge protection in AC line applications. The two models, AC120 and AC240, are designed for use with 120VAC and 240VAC lines respectively. They are able to extinguish AC follow-on currents of at least 200A. Littelfuse CG3 series two-electrode high voltage (1.0 - 7.5 KV) devices are designed for surge protection and high isolation applications, and for applications for which bias voltages or signal levels of several hundred volts are normally present.
The AC and CG3 Series Gas Plasma Arresters are two‑electrode surge protection devices designed for AC line protection and high‑voltage isolation. The AC series (models AC120 and AC240) protect 120VAC and 240VAC circuits, while the CG3 series covers a voltage range of 1.0 kV to 75 kV for applications such as CRT terminals, CATV equipment, and medical electronics.
Key specifications include low capacitance (<1.5 pF), an operational temperature range of –40 °C to +90 °C, and the ability to extinguish follow‑on currents of at least 200 A. Devices are offered in various lead and packaging options, including tape‑and‑reel, bulk, and with or without leads.
| Capacitance | <1.5 pF |
|---|---|
| Operational temperature range | -40 °C to +90 °C |
| AC240 line voltage | 240 VAC |
| Maximum follow‑on current | ≥200 A |
| CG3 voltage rating | 1.0 kV – 75 kV |
| Arc voltage | ~140 V |
The AC series includes AC120 for 120 VAC lines and AC240 for 240 VAC lines.
The devices have a low capacitance of less than 1.5 pF.
CG3 devices are used for CRT terminals, CATV equipment, antennas, power supplies, test equipment, submersible pumps, and medical electronics.
They are available in tape‑and‑reel packaging, bulk, and with or without leads.