S9066-211SB_15 Datasheet, PDF (7/9 Pages) Hamamatsu Corporation – Photo IC diodes

Photo IC diodes
S9066-211SB, S9067-201CT
Measured example of temperature profile with our hot-air reflow oven for product testing
300 °C
240 °C max.
230 °C
190 °C
160 °C
Preheat
120 to 150 s
Soldering
40 s max.
Time
KPICB0172EA
∙ The S9607-201CT supports lead-free soldering. After unpacking, store it in an environment at a temperature of 30 °C or less and a
humidity of 60% or less, and perform soldering within 24 hours.
∙ The effect that the product receives during reflow soldering varies depending on the circuit board and reflow oven that are used.
Before actural reflow soldering, check for any problems by tesitng out the reflow soldering methods in advance.
Operating voltage, output characteristics
Figure 2 shows the photocurrent vs. reverse voltage characteristics (light source: LED) for the measurement circuit example in Figure
1. The output curves are shown for illuminance levels. The output curves rise from a reverse voltage (rising voltage) of approximately 0.7
V (±10%).
To protect the photo IC diode from excessive current, a 150 Ω (±20%) protection resistor is inserted in the circuit. Reverse voltage VR
when the photo IC diode is saturated is the sum of Vbe(ON) and the voltage drop across the protection resistor Rin [Equation (1)].
VR = Vbe(ON) + IL × Rin ............ (1)
The photodiode’s reverse voltage (VR) is expressed by Equation (2) according to the voltage drop across the external resistor. This is
indicated as load lines in Figure 2.
VR = Vcc - IL × RL ............ (2)
In Figure 2, the intersections between the output curves and the load lines are the saturation points. From these points, the maximum
detectable light level can be specified. Since the maximum light level is determined by the supply voltage (Vcc) and load resistance (RL),
adjust them according to the operating conditions.
Note: The temperature characteristics of Vbe(ON) is approximately -2 mV/°C, and that of the protection resistor is approximately
0.1%/°C.
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