641 14 specifications are subject to change without notice ? 2002 teledyne relays 641\072002\q1 random turn on & transformer isolated ac solid-state relay features/benefits ? fast switching speed: where speed is important ? floating output: eliminates ground loops and signal ground noise ? random turn on: for pulse width modulation ? low off state leakage: for high off-state impedance ? switches high voltages: to 250 vrms ? switches high currents: to 0.5 arms ? high noise immunity: control signals isolated from switching noise ? high dielectric strength: for safety and for protection of control and signal level circuits description the series 641 features random turn-on for controlling ac loads with a triac output rated at 0.5 amp up to 50?c ambient without a heat sink. a high frequency input oscillator with isolation transformer coupled directly to the triac gate provides the added capability of driving very low current ac loads down to 5 ma. internal design employs a unique patented lead frame construction molded in a 14-pin dip package. series 641 electrical specifications 25 c unless otherwise specified) input (control) specifications parameter min max units control voltage range (see figure 1) 4.0 10 vdc input current at 5v control voltage 16 madc must turn-on voltage 4.0 vdc must turn-off voltage 0.5 vdc output (load) specifications parameter part min max units load voltage rating 641-1 0 140 vrms 641-2 0 250 output current rating (see figure 3, note 1) 0.005 0.5 arms frequency range 0.1 70 hz over voltage rating 641-1 200 vpeak 641-2 400 vpeak on-state voltage drop at rated voltage 1.5 vrms surge current rating (non-repetitive 16 ms mac. see figure 2, note 2) 5.0 a t urn-on time (60 hz) 20 s t urn-off time (60 hz) 8.3 ms leakage current (rated voltage at 100 c) 1.0 marms off-state dv/dt (without rc snubber, typical) 50 v/ s insulation resistance (input to output at 500 vdc) 10 9 ohms dielectric strength (input to output) 2500 vac capacitance (input to output) 5 pf junction temperature (t j ) 100 c
? 2002 teledyne relays (800) 284-7007 ? www.teledynerelays.com 641 15 641\072002\q1 series 641 characteristic curves typical 641 interface mechanical specifcations notes: 1. ul rated at 0.5 arms for motor starting and incandescent lamp control. 2. triac may lose blocking capability during and after surge until t j falls below 125 c maximum.
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