H21A2

Figure 4. Leakage Current vs. Temperature
DETECTOR
0.1
25
T
A
, AMBIENT TEMPERATURE (
°
C)
1
10
2
10
1
10
3
50 75 100
I
CEO
, NORMALIZED DARK CURRENT
T
A
= 25
°
C
V
CE
= 25 V
V
CE
= 25 V
NORMALIZED TO
V
CE
= 10 V
0.1
25
1
10
2
10
1
10
3
50 75 100
T
A
= 25
°
C
V
R
= 5 V
NORMALIZED TO
EMITTER
T
A
, AMBIENT TEMPERATURE (
°
C)
I
R
, NORMALIZED LEAKAGE CURRENT
Figure 5. Switching Speed vs. RL
.45
.5
.6
1.5
.7
.8
.9
1K 2K 3K
R
L
, LOAD RESISTANCE ()
1
2
3
4.5
4
4K 5K 6K 7K 8K 9K 10K
t
ON
, AND t
OFF
NORMALIZED
I
F
R
L
+
V
CC
PW = 300 µs
PRR = 100 pps
I
F
=
75
AMPS, V
CC
= 5V
R
L
NORMALIZED TO
R
L
= 2.5 K
Figure 6. Output Current vs. Distance
.0001
.1
.01
0246810
d, DISTANCE (mm)
d, DISTANCE (mils)
.001
1.00
I
CE(on)
, NORMALIZED OUTPUT CURRENT
NORMALIZED
TO VALUE WITH
SHIELD
REMOVED
78.7 157.5 236.2 315 393.7
t
off
t
on
BLACK
SHIELD
BLACK
SHIELD
D
+E
+
d
o
d
o
www.fairchildsemi.com 4 OF 5 5/02/01 DS300290
H21A1 / H21A2 / H21A3
PHOTOTRANSISTOR
OPTICAL INTERRUPTER SWITCH
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED
HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF
OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical
implant into the body,or (b) support or sustain life,
and (c) whose failure to perform when properly
used in accordance with instructions for use provided
in labeling, can be reasonably expected to result in a
significant injury of the user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
DS300290 5/02/01 5 OF 5 www.fairchildsemi.com
H21A1 / H21A2 / H21A3
PHOTOTRANSISTOR
OPTICAL INTERRUPTER SWITCH

H21A2

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Optical Switches, Transmissive, Phototransistor Output INTERUP MOD TRANS
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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