Protect Your Product With Reliable Components From ATC Semitec
Inrush limiters, PTC fuses, current limiting diodes,
thermal fuses & other circuit protection devices all
available from the UK's market leaders.
ATC Semitec Products
• NTC Thermistors • PTC Thermistors • Temperature Sensors • Platinum Sensors/Pt100s • Thermostats/Thermal Cutouts • Disc Thermostats • Precision Thermostats • Adjustable Thermostats • Thermal Fuses • PTC Resettable Fuses • Circuit Protection Devices
We can help you with the design-in and supply of circuit protection components providing you with optimum circuit safety against a wide range of current, voltage and thermal overload conditions.
Current limiting diodes create constant current circuits for LED control and protection upto 100V. Inrush current limiters protect front-end mains voltage supplies against current spikes at switch-on. PTC fuses offer resettable over-current solid-state fuse protection in low voltage and mains voltage rated circuits.
Zenamic and TVR metal oxide varistors in SMD multilayer, disc and block form offer over-voltage protection from 11V to 1000V with peak voltages to 6500V. Thermally protected versions also available.
SEFUSE thermal fuses offer one-shot (one-time) ultimate thermal protection from 70°C to 240°C. Current ratings of 15A/250VAC means they can be safely used in appliance circuits upto 3kW. Even higher levels of reliability can be achieved by using SEFUSE SFH series or bimetal one-shot fuses. SEFUSE D6X thermally fusible resistors give over-current protection of power Mosfets in battery control circuits.
Semifuse polymeric PTC fuses offer self-hold resettable over-current protection in electronic applications.
Strap, radial and SMD formats with current values from 0.1A to 14A and now voltage ratings upto 240V.
UL, CSA and TuV approvals.
Very wide range of inrush current limiters from 5mm to 30mm diameter. Steady-state currents up to 30A and cold resistance values to 120ohms ensure that a wide span of inrush currents can be controlled. Tape/reel and special variants available for volume applications.
Current Regulating Diodes (or Current Limiting Diodes) are a very simple way of providing constant current (now up to 22mA) over a wide voltage range (1V to 100V).
Combining them in parallel or in series with a zener, even higher current and voltage ratings can be achieved. Surface mount SOD323 and DO-35 diode packages are readily available.
A wide range of metal oxide varistors. Disc varistors from 5 to 20mm with high surge capacity and compact size variants. Block varistors offer protection up to 1000VAC and 3kJ surges. SMD multilayer, encapsulated and versions with thermal protection ensure a wide range is available to meet all your requirements.
Zenamic metal oxide varistors control transient voltage surges in electronic and electrical circuits to safe levels.
Peak current surges of up to 6500A (8/20 s) and peak power surges of up to 565J (10/1000 s) respectively can be limited by these fast-acting devices.
One-shot thermal fuses give ultimate thermal protection from 70°C to 240°C.
Superior fuse designs, the highest reliability, 15A/250VAC current ratings with UL, CSA and VDE (EN) approvals guarantee the highest fuse quality required for safety critical and ATEX applications.