• Non-Contact Position Sensing
• Datum detection
• Machine automation
Infrared Light Emitting Diode
in SMD Plastic Package
OP270 Series
• 880nm Wavelength
• Narrow Beam Angle
• High Power
• Four Lead Configurations
• 1.9mm Water Clear Plastic Package
The OP270 series are GaAlAs infrared LEDs mounted in a clear plastic SMT packages. The devices incorporate
an integral molded lens which enables a narrow beam angle and provides an even emission pattern. This series
is available with four lead configurations and is compatible with most automated mounting equipment. The OP270
Series LEDs are mechanically and spectrally matched to the OP570 series 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
Pb
LEAD FREE
• Optical encoders
• IrDA
• Reflective and Transmissive Sensors
Applications
Part Number Description Material Lead Style
OP270 LED, SMD, 1.9mm Molded GaAlAs Axial
OP271 LED, SMD, 1.9mm Molded GaAlAs Gull-Wing
OP272 LED, SMD, 1.9mm Molded GaAlAs Yoke Bend
OP273 LED, SMD, 1.9mm Molded GaAlAs Reverse Gull-Wing
-90 -60 -30 0 30 60 90
0%
20%
40%
60%
80%
100%
Relative Radiant Intensity
Angular Displacement (Degrees)
Relative Radiant Intensity vs.
Angular Displacement
OP270
OP271
OP273
OP272
SMD Infrared LED
OP270 Series
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 +85° C
Operating Temperature Range -40° C to +85° C
Lead Soldering Temperature 260° C(1)
Reverse Voltage 30 V
Continuous Forward Current 50 mA
Power Dissipation 130 mW(2)
Notes:
1. Solder time less than 5 seconds at temperature extreme.
2. De-rate linearly at 2.17 mW/° C above 25° C.
SYMBOL PARAMETER MIN MAX UNITS CONDITIONS
Ee(APT) Apertured Radiant Incidence 1.5 mW/cm2 IF = 20mA(3)
VF Forward Voltage 1.5 V IF = 20mA
IR Reverse Current 100 µA VR = 2.0V
λP Peak Emission Wavelength nm IF = 10mA
tr, tf Rise and Fall Time 500 ns IF(PEAK) = 100mA, PW = 10µs, 10% D.C.
TYP
890
ΘHP Emission Angle at Half Power Points 25 Deg. IF = 20mA
3. Ee(APT) is a measurement of the apertured radiant incidence upon a sensing area 0.081” (2.06mm) in diameter, perpendicular to and cen-
tered on the mechanical axis of the lens, and 0.590” (14.99mm) from the measurement surface. Ee(APT) is not necessarily uniform within
the measured area.
100°C
-40°C
Relative Radiant Intensity vs.
Forward Current vs. Temperature
0 10 20 30 40 50
Forward Current (mA)
Relative Radiant Intensity
100%
150%
200%
250%
300%
350% Normalized at IF = 20mA,
TA = 20°C. Temperatures
stepped in 20°C Increments
50%
0% 1.0
1.1
1.2
1.3
1.4
1.5
Forward Voltage (V)
Forward Voltage vs. Forward
Current vs. Temperature
0 10 20 30 40 50
Forward Current (mA)
-40°C
100°C
Temperatures stepped in 20°C
Increments
Issue 1.0 04.05
Page 2 of 3
SMD Infrared LED
OP270 Series
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 04.05
Page 3 of 3
OP270
2 1
2 1
PIN LED
1 A
2 K
OP271
OP272 OP273
PIN LED
1 A
2 K
PIN LED
1 A
2 K
PIN LED
1 A
2 K
