H21A1 Datasheet, PDF (4/5 Pages) QT Optoelectronics – SLOTTED OPTICAL SWITCH

H21A1 / H21A2 / H21A3
PHOTOTRANSISTOR
OPTICAL INTERRUPTER SWITCH
Figure 4. Leakage Current vs. Temperature
DETECTOR
EMITTER
10³
10³
10²
V_CE = 25 V
10²
V_CE = 10 V
10¹
10¹
1
0.1
25
NORMALIZED TO
V_CE = 25 V
T_A = 25 °C
50
75
100
T _A, AMBIENT TEMPERATURE (°C)
1
0.1
25
NORMALIZED TO
V_R = 5 V
T_A = 25 °C
50
75
100
T _A, AMBIENT TEMPERATURE (°C)
Figure 5. Switching Speed vs. RL
4.5
4
PW = 300 µs
3
PRR = 100 pps
I_F =
75
R_L
AMPS,
V_CC
=
5V
2
NORMALIZED TO
R_L = 2.5 KΩ
1.5
t_on
t_off
1
.9
.8
.7
.6
.5
.45
1K
R_L
+
IF
V_CC
2K
3K
4K 5K 6K 7K 8K 9K 10K
R_L , LOAD RESISTANCE (Ω)
Figure 6. Output Current vs. Distance
d, DISTANCE (mils)
1.00
78.7
157.5
236.2
315
393.7
.1
BLACK
SHIELD
.01
+D
E+
d
o
.001
.00010
2
4
6
d, DISTANCE (mm)
NORMALIZED
TO VALUE WITH
SHIELD
REMOVED
BLACK
SHIELD
d
o
8
10
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