NPN Silicon Phototransistor
OP508FA, OP509A, OP509B
Obsolete (OP508FC, OP509C)
OP509
OP508
Features:
• Flat lensed for wide acceptance angle (OP508F)
• Lensed for high sensiꢂvity (OP509)
• Easily stackable on 0.100” (2.54 mm) hole centers
• Inexpensive plasꢂc package
• Mechanically and spectrally matched to OP168 and OP268 series of infrared
emiꢃng diodes
Description:
The OP508FA consists of an NPN silicon phototransistor mounted in a flat, black plasꢂc “end-looking” package. The flat
sensing surface allows an acceptance half-angle of 60° when measured from the opꢂcal axis to the half power point.
Each device in the OP509 series consists of an NPN silicon phototransistor mounted in a lensed, clear plasꢂc “end-looking”
package. The lensing effect of the package allows an acceptance half-angle of 25° when measured from the opꢂcal axis to
the half power point.
OP508FA and OP509 series devices can be mounted on 0.100” (2.54 mm) hole centers, which makes them an ideal low-cost
alternate to hermeꢂc OP600 sensors. OP508FA and OP509 series devices are mechanically and spectrally matched to the
OP168F and OP268F series of infrared emiꢀng diodes.
Please refer to Applicaꢁon Bulleꢁns 208 and 210 for addiꢁonal design informaꢁon and reliability (degradaꢁon) data.
For custom versions of the OP508FA and OP509 series devices please contact your OPTEK representaꢂve.
Applications:
• Applicaꢂons requiring a wide acceptance angle
• Applicaꢂons requiring high sensiꢂvity
• Space-limited applicaꢂons
Ordering Informaꢀon
Sensor
Part
Number
Viewing
Angle
Lead
Length
OP508FA
120°
OP508FC
(Obsolete)
OP509A
OP509B
Phototransistor
0.50"
50°
OP509C
(Obsolete)
RoHS
General Note
TT Electronics | OPTEK Technology
2900 E. Plano Pkwy, Plano, TX 75074 | Ph: +1 972 323 2200
www.ꢀelectronics.com | sensors@ꢀelectronics.com
TT Electronics reserves the right to make changes in product speciꢁcaꢂon without
noꢂce or liability. All informaꢂon is subject to TT Electronics’ own data and is
considered accurate at ꢂme of going to print.
Rev C 08/2023 Page 1
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