1.9mm Round Subminiature Axial Phototransistor PT91-21B Features ․Fast response time ․High photo sensitivity ․Small junction capacitance ․Compatible with infrared and vapor phase reflow solder process. ․Pb free ․RoHS Compliance ․The product itself will remain within RoHS compliant version. Descriptions ․PT91-21B is a phototransistor in miniature SMD package which is molded in blacktransparentepoxywith spherical top view lens. The device is spectrally matched to infrared emitting diode. Applications ․Miniature switch ․Counters and sorter ․Position sensor ․Infrared applied system Device Selection Guide Chip Part Category Lens Color Material PT Silicon Black 1 Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 www.everlight.com Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever

Data Sheet 1.9mm Round Subminiature Axial Phototransistor PT91-21B Package Dimensions Collector Emitter Notes: 1.All dimensions are in millimeters 2.Tolerances unless dimensions ±0.1mm Absolute Maximum Ratings (Ta=25℃) 2 www.everlight.com Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever

Data Sheet 1.9mm Round Subminiature Axial Phototransistor PT91-21B Parameter Symbol Rating Units Collector-Emitter Voltage V 30 V CEO Emitter-Collector-Voltage V 5 V ECO Collector Current I 20 mA C Operating Temperature T -25 ~ +85 ℃ opr Storage Temperature T -40 ~ +85 ℃ stg Soldering Temperature*1 T 260 ℃ sol Power Dissipation at(or below) P 75 mW 25℃Free Air Temperature d Notes: *1:Soldering time≦5 seconds. Electro-Optical Characteristics (Ta=25℃) Parameter Symbol Condition Min Typ Max Unit Rang Of Spectral Bandwidth λ 730 --- 1100 nm 0.5 Wavelength Of Peak Sensitivity λ --- --- 940 --- nm P Collector-Emitter Breakdown I =100μA BV C 30 --- --- V Voltage CEO Ee=0mW/cm2 Emitter-Collector Breakdown I =10μA BV E 5 --- --- V Voltage ECO Ee=0mW/cm2 Collector-Emitter Saturation I =2mA V C --- --- 0.4 V Voltage CE(sat) Ee=1mW/cm2 V =20V Collector Dark Current I CE --- --- 100 nA CEO Ee=0mW/cm2 V =5V On State Collector Current I CE 1.0 3.0 --- mA C(ON) Ee=1mW/cm2 3 www.everlight.com Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever

Data Sheet 1.9mm Round Subminiature Axial Phototransistor PT91-21B Typical Electro-Optical Characteristics Curves Fig.1 Spectral Sensitivity Fig.2 Collector Current vs. Irradiance 1.0 Ta=25°C 0.8 0.6 0.4 0.2 0 700 800 900 1000 1100 1300 Fig.3 Collector Current vs. Collector-Emitter Voltage 4 www.everlight.com Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever

Data Sheet 1.9mm Round Subminiature Axial Phototransistor PT91-21B Precautions For Use 1. Over-current-proof Customer must apply resistors for protection , otherwise slight voltage shift will cause big current change ( Burn out will happen ). 2. Storage 2.1 Do not open moisture proof bag before the products are ready to use. 2.2 Before opening the package, the Phototransistorshould be kept at 30℃ or less and 90%RH or less. 2.3 The Phototransistorshould be used within a year. 2.4 After opening the package, the Phototransistorshould be kept at 30℃ or less and 60%RH or less. 2.5 The Phototransistorshould be used within 168 hours (7 days) after opening the package. 2.6 If the moisture absorbent material (silicagel) has faded away or the Phototransistorhave exceeded the storage time, baking treatment should be performed using the following conditions. Baking treatment : 60±5℃ for 24 hours. 3. Soldering Condition 3.1 Pb-freesolder temperature profile 3.2 Reflow soldering should not be done more than two times. 3.3 When soldering, do not put stress on the Phototransistorduring heating. 3.4 After soldering, do not warp the circuit board. 5 www.everlight.com Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever

Data Sheet 1.9mm Round Subminiature Axial Phototransistor PT91-21B 4.Soldering Iron Each terminal is to go to the tip of soldering iron temperature less than 350℃ for 3 seconds within once in less than the soldering iron capacity 25W. Leave two seconds and more intervals, and do soldering of each terminal. Be careful because the damage of the product isoften started at the time of the hand solder. 5.Repairing Repair should not be done after the Phototransistor have been soldered. When repairing is unavoidable, a double-head soldering iron should be used (as below figure). It should be confirmed beforehand whether the characteristics of the Phototransistorwill or will not be damaged by repairing. Packing Quantity Specification 1000PCS/1Bag 6 www.everlight.com Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever

Data Sheet 1.9mm Round Subminiature Axial Phototransistor PT91-21B Label Form Specification CPN: Customer’s Production Number P/N : Production Number QTY: Packing Quantity CAT: Ranks HUE: Peak Wavelength REF: Reference LOT No: Lot Number Notes 1. Above specification may be changed without notice. EVERLIGHT will reserve authority on material change for above specification. 2. When using this product, please observe the absolute maximum ratings and the instructions for using outlined in these specification sheets. EVERLIGHT assumes no responsibility for any damage resulting from use of the product which does not comply with the absolute maximum ratings and the instructions included in these specification sheets. 3. These specification sheets include materials protected under copyright of EVERLIGHT corporation. Please don’t reproduce or cause anyone to reproduce them without EVERLIGHT’s consent. EVERLIGHT ELECTRONICS CO., LTD. Tel: 886-2-2685-6688 Office: No. 6-8, Zhonghua Rd., Shulin Dist., Fax: 886-2685-2699，6897 New Taipei City 23860, Taiwan http://www.everlight.com 7 www.everlight.com Copyright © 2013, Everlight AllRights Reserved.Release Date :23-Sep-2015.Issue No:DPT-0000300.Rev:2 Revision : 2 Release Date:2015-10-06 19:56:13.0 LifecyclePhase: Expired Period: Forever