Applications
• Non-Contact Position Sensing
• Datum detection
• Machine automation
• Optical encoders
GaAs Infrared Emitting Diode
in Side Looking Package
OP142A, OP142B, OP142C, OP142D
• Narrow irradiance pattern
• 940nm Wavelength
• Low cost, miniature plastic side looking package
• Mechanically and spectrally matched to the OP552 series of
phototransistors
The OP142 series are gallium arsenide (GaAs) infrared emitting diodes that are molded in a plastic side looking
packages. These devices incorporate a integral molded lens which enables a narrow irradiance pattern and pro-
vides even emission over a large area. The side looking package is designed for PC board mounting and enables
sensing in a plane perpendicular to the mounting surface. The OP142 series are mechanically and spectrally
matched to the OP552 series NPN Infrared Phototransistors.
Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com A subsidiary of
TT electronics plc
Part Number EE(APT) Apertured Radiant Incidence
OP142A 0.40 mW/cm2 Min.
OP142B 0.30 mW/cm2—0.55 mW/cm2
OP142C 0.20 mW/cm2—0.40 mW/cm2
OP142D 0.10 mW/cm2 Min.
Ordering Information
Pb
RoHS
GaAs Infrared Emitting Diode
in Side Looking Package
OP142A, OP142B, OP142C, OP142D
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Electrical Characteristics (TA = 25°C unless otherwise noted)
Absolute Maximum Ratings
TA = 25o C unless otherwise noted
Storage Temperature Range -40° C to +100° C
Operating Temperature Range -40° C to +85° C
Lead Soldering Temperature [1/16 inch (1.6mm) from case for 5 sec with soldering iron] 260° C(1)
Reverse Voltage 5.0 V
Continuous Forward Current (IF) 50 mA
Power Dissipation 75 mW(2)
Notes:
1. RMA flux is recommended. Duration can be extended to 10 sec when flow soldering. A maximum 5 seconds and 20 grams of force may
be applied to the leads when hand soldering.
2. De-rate linearly at 1.25 mW/° C above 25° C.
SYMBOL PARAMETER MIN MAX UNITS CONDITIONS
EE(APT) Apertured Radiant Incidence
OP142A
OP142B
OP142C
OP142D
0.40
0.30
0.20
0.10
-
0.55
0.40
mW/cm2 IF = 20 mA(3)
VF Forward Voltage 1.2 1.5 V IF = 20 mA
IR Reverse Current 20 µA VR = 10.0V
λp Wavelength at Peak Emission 935 nm IF = 20 mA
ΘHP Emission Angle at Half Power Points 40 Degrees
tr Output Rise Time 1000 ns
tf Output Fall Time 500 ns
IF(PK) = 100mA, PW = 10µs,
Duty Cycle = 10%
IE Radiant Intensity
OP142A
OP142B
OP142C
OP142D
1.12
0.84
0.56
0.28
-
1.54
1.12
-
mW/sr IF = 20 mA
Issue 1.0 09.05
Page 2 of 4
3. EE(APT) is a measurement of the average apertured radiant incidence upon a sensing area 0.180” (4.57 mm) diameter perpendicular to and
centered on the mechanical axis of the lens and 0.653” (16.6 mm) from the lens tip. EE(APT) is not necessarily uniform within the measured
area.
GaAs Infrared Emitting Diode
in Side Looking Package
OP142A, OP142B, OP142C, OP142D
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue 1.0 09.05
Page 3 of 4
Relative Radiant Intensity vs.
Forward Current
0 10 20 30 40 50
Forward Current (mA)
Relative Radiant Intensity
100%
150%
200%
250%
300%
50%
Normalized at IF = 20mA,
TA = 20°C.
80%
90%
95%
100%
115%
Relative Radiant Intensity
Relative Radiant Intensity vs.
Temperature
-20 0 20 40 60 80
Temperature (°C)
85%
105%
110%
Normalized at TA = 20 °C
Forward Voltage vs.
Forward Current
0 10 20 30 40 50
Forward Current (mA)
Forward Voltage (V)
0.40
0.60
0.80
1.00
1.60
0.20
1.20
1.40
Relative Radiant Intensity vs.
Angular Position
-90 -60 -30 0 30 60
Angular Position (Degrees)
Forward Voltage (V)
40%
50%
60%
70%
100%
20%
80%
90%
30%
10%
90
GaAs Infrared Emitting Diode
in Side Looking Package
OP142A, OP142B, OP142C, OP142D
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Mechanical Data
Issue 1.0 09.05
Page 4 of 4
Notes:
1. All dimensions are in inches [mm]
2. Tolerances are ±0.005” [0.13m] unless otherwise stated
3. Mold flash at lead egress and body edges
4. * = measured at lead egress from body
*
