link to page 6 FOD410, FOD4108, FOD4116, FOD4118TYPICAL APPLICATION Figure 1 shows a typical circuit for when hot line part, 2 mA for FOD410 and FOD4108, 1.3 mA for switching is required. In this circuit the “hot” side of the line FOD4116 and FOD4118. The 39 W resistor and 0.01 mF is switched and the load connected to the cold or neutral side. capacitor are for snubbing of the triac and may or may not The load may be connected to either the neutral or hot line. be necessary depending upon the particular triac and load Rin is calculated so that IF is equal to the rated IFT of the use. Rin 1 6 360 W VCC HOT FOD410 2 FOD4108 5 FKPF12N80 FOD4116 39 W FOD4118 3 4 240 VAC 0.01 mF 330 W LOAD NEUTRAL *For highly inductive loads (power factor < 0.5), change this value to 360 W. Figure 1. Hot−Line Switching Application Circuit 240 VAC R1 D1 1 6 VCC FOD410 Rin 2 FOD4108 5 SCR FOD4116 FOD4118 SCR 3 4 360W R2 D2 LOAD Figure 2. Inverse−Parallel SCR Driver Circuit Suggested method of firing two, back−to−back SCR’s NOTE: This optoisolator should not be used to drive a with a ON Semiconductor triac driver. Diodes can be load directly. It is intended to be a discrete triac 1N4001; resistors, R1 and R2, are optional 330 W. driver device only. www.onsemi.com6
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