
H21B1, H21B2, H21B3, H21B4, H21B5, H21B6
H22B1, H22B2, H22B3, H22B4, H22B5, H22B6
1mm APERTURE OPTO-ELECTRONIC SINGLE
CHANNEL SLOTTED INTERRUPTER
SWITCHES WITH DARLINGTON SENSORS
1
2
9.0
8.0
25.7
24.1
E
12.7
19.05
4
3
3.0
11.1
10.5
0.45
0.40
7.62
3.3
DIA 2
PLCS
6.6
3.3
3.0
2.8
3.3
3.0
OPTICAL
CENTRE
LINE
2.54
1
H21B1, H21B4
H21B2, H21B5
H21B3, H21B6
DESCRIPTION
The H21B_ and H22B_ series of opaque
photointerrupters are single channel switches
consisting of a Gallium Arsenide infrared
emitting diode and a NPN silicon photo
darlington mounted in a polycarbonate housing.
The package is designed to optimise the
mechanical resolution, coupling efficiency,
ambient light rejection, cost and reliability.
Operating on the principle that objects opaque to
infrared will interrupt the transmission of light
between an infrared emitting diode and a photo
sensor switching the output from an "ON" state to
an "OFF" state.
2
Dimensions in mm
9.0
8.0
1
2
E
12.7
7.62
3.0
4
4
3
11.1
10.5
0.45
0.40
6.6
3.3
3.0
2.8
OPTICAL
CENTRE
LINE
H22B1, H22B4
H22B2, H22B5
3
ABSOLUTE MAXIMUM RATINGS
(25°C unless otherwise specified)
Storage Temperature -40°C to + 85°C
Operating Temperature -25°C to + 85°C
Lead Soldering Temperature
(1/16 inch (1.6mm) from case for 10 secs) 260°C
INPUT DIODE
Forward Current 50mA
Reverse Voltage 5V
Power Dissipation 75mW
H22B3, H22B6
FEATURES
l High Gain
l 3mm Gap between LED and Detector
l Polycarbonate case protected against
ambient light
APPLICATIONS
l Copiers, Printers, Facsimilies, Record
Players, Casette Decks, Optoelectronic
Switches
ISOCOM COMPONENTS LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, Cleveland, TS25 1YD
Tel: (01429) 863609 Fax :(01429) 863581
OUTPUT TRANSISTOR
Collector-emitter Voltage BV
H21B4, 5, 6, H22B4, 5, 6 55V
CEO
H21B1, 2, 3, H22B1, 2, 3 30V
Emitter-collector Voltage BV
Collector Current I
Power Dissipation 75mW
C
ECO
6V
50mA
ISOCOM INC
720 E., Park Boulevard, Suite 104,
Plano, TX 75074 USA
Tel: (972) 423-5521
Fax: (972) 422-4549
DB92007-AAS/A3

ELECTRICAL CHARACTERISTICS ( TA= 25°C Unless otherwise noted )
PARAMETER MIN TYP MAX UNITS TEST CONDITION
Input Forward Voltage (VF) 1.2 1.7 V IF = 50mA
Reverse Voltage (VR) 5 V IR = 1µA
Reverse Current (IR) 100 µA VR = 6V
Output Collector-emitter Breakdown (BV
( Note 1 )
H21B4, 5, 6, H22B4, 5, 6 55 V IC = 1mA
H21B1, 2, 3, H22B1, 2, 3 30 V IC = 1mA
Emitter-collector Breakdown (BV
Collector-emitter Dark Current (I
Coupled On-State Collector Current IC (
CEO
ON
( Note 1 )
H21B1, 4, H22B1, 4 0.5 mA 2mA IF , 1.5V V
H21B2, 5, H22B2, 5 1.0 mA 2mA IF , 1.5V V
H21B3, 6, H22B3, 6 2.0 mA 2mA IF , 1.5V V
Collector-emitter Saturation Voltage V
H21B2, 3, 5, 6, H22B2, 3, 5, 6 only 1.5 V 50mA I
)
CEO
) 6 V IE = 100µA
ECO
) 1 µA VCE = 10V
)
2.5 mA 5mA IF , 1.5V V
7.5 mA 10mA IF , 1.5V V
5.0 mA 5mA IF , 1.5V V
14 mA 10mA IF , 1.5V V
10 mA 5mA IF , 1.5V V
25 mA 10mA IF , 1.5V V
CE(SAT)
1.0 V 10mA I
, 1.8mA I
F
, 50mA I
F
CE
CE
CE
CE
CE
CE
CE
CE
CE
C
C
Turn-on Time ton 45 µs VCC = 5V, IF = 10mA,
Turn-on Time ton 7 µs VCC = 5V, IF = 50mA,
( H21B2, 3, 5, 6, H22B2, 3, 5, 6 only ) RL= 75Ω
Turn-off Time toff 250 µs VCC = 5V, IF = 10mA,
Turn-off Time toff 45 µs VCC = 5V, IF = 50mA,
( H21B2, 3, 5, 6, H22B2, 3, 5, 6 only ) RL= 75Ω
Note 1 Special Selections are available on request. Please consult the factory.
RL= 750Ω
RL= 750Ω
DB92007-AAS/A3

Collector Power Dissipation vs. Ambient Temperature
100
(mW)
C
75
50
25
Collector power dissipation P
0
-25 0 25 50 75 100 125
Ambient temperature TA ( °C )
Normalized Output Current vs.
Collector-emitter Voltage
10
4
IF = 10mA
2
1
0.4
0.2
0.1
0.04
Normalized output current
0.02
Normalized to :
IF = 5mA
V
CE
TA = 25°C
Pulsed
PW = 100µs
PRR = 100pps
0.01
0.1 1 10 100
Collector-emitter voltage V
= 1.5V
( V )
CE
5mA
2mA
1mA
Forward Current vs. Ambient Temperature
60
50
(mA)
40
F
30
20
Forward current I
10
0
-25 0 25 50 75 100 125
Ambient temperature TA ( °C )
Normalized Output Current
vs. Ambient Temperature
1.5
IF = 5mA
VCE = 1.5V
Normalized Output Current vs.
2.6
2.4
2.2
2.0
1.8
1.6
1.4
Normalized to
IF = 5mA
V
CE
TA = 25°C
Pulsed
PW = 100µs
PRR = 100pps
Forward Current
= 1.5V
1.2
1.0
0.8
0.6
Normalized output current
0.4
0.2
0
1 2 5 10 20 50
Forward current IF (mA)
Collector-emitter Saturation
Voltage vs. Ambient Temperature
(V)
0.95
CE(SAT)
0.90
0.85
IF = 10mA
IC = 1.8mA
1.0
0.5
Normalized output current
0
-25 0 25 50 75 100
Ambient temperature TA ( °C )
0.80
0.75
0.70
0.65
0.60
Collector-emitter saturation voltage V
-25 0 25 50 75 100
Ambient temperature TA ( °C )
DB92007-AAS/A3