Series C75 Optically Isolated 1.0A with Short-Circuit Protection & Trip Status DC Solid-State Relay FEATURES/BENEFITS • Short Circuit Protected: Prevents damage to system components, assemblies and system wiring • Trip Status: Provides status monitoring and feedback of the protection state • Optical Isolation: Isolates control circuits from load transients Eliminates ground loops and signal ground noise • Low Off-State Leakage: For high off-state impedance • Switches High Currents: To 1.0 Adc • High Dielectric Strength: For safety and for protection of control and signal level circuits DESCRIPTION The C75-2S solid state relay utilizes a power FET switch that is protected against overload and short circuit currents. Protection is provided against turn-on into a short circuit, shorts that occur while conducting loads up to rated or for long term overload currents above rated that slowly overheat the relay. Once the protection trips the relay off it will remain off until reset by cycling the input control. Using the C75-2S to switch power loads can prevent fires, damage to system assemblies and system wiring. The power FET output offers low “On” resistance and can switch loads in either the high or the low side of the power line. The C75-2 is packaged in a 16 pin DIP, with surface mount or through hole mounting available. The C75-2SH also provides an open collector trip status feedback to the relay’s control side for short circuit and thermal trip monitoring. H = Relay has an internal over voltage suppressor for inductive loads. © 2004 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com C75 1 C75\112004\Q1 Series C75 ELECTRICAL CHARACTERISTICS 3.5 3.0 2.5 LOAD CURRENT (A) TYPICAL 2.0 –40°C 1.5 TYPICAL +25°C +85°C 1.0 0.5 0 TRIP TIME (SECONDS) TYPICAL TRIPP CURRENT VS. TIME FIGURE 4 C75 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2004 TELEDYNE RELAYS C75\112004\Q1