External dimensions (Unit : mm) RPI-121 Photointerrupter, Ultraminiature type 3.6 50 mA VR 5 V Power dissipation PD 80 mW Collector-emitter voltage VCEO 30 V Emitter-collector voltage VECO 4.5 V IC 30 mA Collector current Collector power dissipation PC 80 mW Operating temperature Topr −25 to +85 °C Storage temperature Tstg −40 to +100 °C 2 IF Reverse voltage Optical control equipment Cameras Floppy disk drives Gap Features 4-φ 0.8 1 0.8 Cross-section A-A 0.4 C 0. 7 Forward current Applications A 1) Ultra-small. 2) Minimal influence from stray light. 3) Low collector-emitter saturation voltage. Optical axis center (0.5) Unit 1.5 Limits 2.3 Symbol 3.3 Output (phototransistor ) Input(LED) Parameter 2.65 2.6 Absolute maximum ratings (Ta=25°C) Through hole Electrical and optical characteristics (Ta=25°C) Transfer characteristics Symbol Min. Typ. Max. Unit Forward voltage VF − 1.3 1.6 V IF = 50mA Reverse current IR − − 10 µA VR = 5V ICEO − − VCE = 10V − 800 0.5 − µA λP nm Dark current Peak sensitivity wavelength Infrared light emitter diode − − mA VCE = 5V, IF = 20mA 0.2 − − mA VCE = 5V, IF = 5m VCE(sat) − − 0.3 V IF = 20mA, IC = 0.3mA − 10 − µs VCC = 5V, IF = 20mA, RL =100Ω tr Response time tf Cut-off frequency fC − 1 − MHz Peak light emitting wavelength λP − 950 − nm − 10 − µs − 800 − nm tf tr Response time λP Maximum sensitivity wavelength 4-0.5 2-R0.3 4-0.2 4-0.4 (2) (2.65) Anode Collector Notes: 1. Unspecified tolerance shall be ±0.2 . 2. Dimension in parenthesis are show for reference. IF=50mA ∗ Non-coherent Infrared light emitting diode used. VCC=5V, IC=1mA, RL=100Ω ∗ This product is not designed to be protected against electromagnetic wave. Cathode Emitter − 0.5 1.0 1.5 2.0 20 10 0 2.5 DISTANCE : d (mm) d 125 100 75 50 25 0 0 0.5 1.0 1.5 2.0 2.5 DISTANCE : d (mm) Fig.4 Relative output current vs. distance ( ) POWER DISSIPATION / COLLECTOR POWER DISSIPTION : PD/PC (mW) Fig.1 Relative output current vs. distance ( ) −20 0 20 40 60 80 20 10 0 0.2 100 0.4 0.6 0.8 1.0 1.2 1.4 1.6 Fig.2 Forward current falloff Fig.3 Forward current vs. forward voltage P D PC 80 60 40 20 −20 0 20 40 60 80 AMBIENT TEMPERATURE : Ta (˚C) Fig.5 Power dissipation / collector power dissipation vs. ambient temperature 100 2 1 RL=1kΩ RL=100Ω 10 20 30 40 50 1 0.05 0.1 Fig.7 Collector current vs. forward current Input 120 100 80 60 40 20 −40 −20 0 20 40 60 80 100 AMBIENT TEMPERATURE : Ta (˚C) Fig.6 Relative output vs. ambient temperature VCE=30V VCE=20V VCE=10V 10 1 1 10 4 20mA VCC Input Output 90% RL 10% Output td tr 10mA 2 0 0 tf td : Delay time 2 4 6 8 10 COLLECTOR TO EMITTER VOLTAGE: VCE (V) Fig.10 Output characteristics 50 75 Fig.9 Dark current vs. ambient temperature 40mA 30mA 25 Fig.8 Response time vs. collector current IF=50mA 6 0 AMBIENT TEMPERATURE : Ta (˚C) 10 8 −25 COLLECTOR CURRENT : IC (mA) t r : Rise time (time for output current to rise from 0 100 0.1 160 140 RL=500Ω 10 FORWARD CURRENT : IF (mA) FORWARD VOLTAGE : VF (V) 100 3 0 0 1.8 AMBIENT TEMPERATURE : Ta (˚C) 120 0 30 4 DARK CURRENT : ICEO (nA) 25 30 40 RESPONSE TIME : tr (µs) 50 40 −25˚C 0˚C 25˚C 50˚C 75˚C COLLECTOR CURRENT : IC (mA) 75 FORWARD CURRENT : IF (mA) d RELATIVE COLLECTOR CURRENT : IC (%) 100 50 COLLECTOR CURRENT : IC (mA) 1000 50 0 0 100 5 125 FORWARD CURRENT : IF (mA) RELATIVE COLLECTOR CURRENT : IC (%) Electrical and optical characteristics curves RELATIVE COLLECTOR CURRENT : IC (%) Photo transistor 0.7 IC2 2-R0.1 A − IC1 Collector current Collector-emitter saturation voltage Conditions Min.2 Output Input charac- characteristics teristics Parameter 10% to 90% of peak current) t f : Fall time (time for output current to fall from 90% to 10% of peak current) Fig.11 Response time measurement circuit 100 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.1