ahf2 ordering information remark: standard packaging: tube 50 pcs. small, highly reliable tip sensor containing a photo sensor ahf2 (tip) switches mounting direction vertical mounting horizontal mounting reverse mounting pa rt no. AHF21 ahf22 ahf23 pcb mounting condition features ?realizes miniaturization of equipment and spaces saving. size of body: 9.5 9.5 9.3 mm ?the contact type is equivalent to normally closed contacts, which satis?s the pl act. ?the internal sphere can be used over an operation angle of 360 degrees in the circumferential direction. ?there are three standard terminal pro?es which can be selected according to the mounting direction of the pcb. ?the terminals are tin-plated for long- term solderability. typical applications ?gas heaters ?electric fans ?water vallet ?infrared treatment device ?electric pots with warming function compliance with rohs directive contact type normally closed type (the photo transistor is on when the sensor is being used.) applicable circuit refer to the dimensional diagram for the terminal nos. ?v cc = 5 v ?r 2 = 100 k ? ?forward current, i f , of the led: 19 ma (v cc = 5 v, r 1 = 200 ? ) ?forward voltage, v f , of the led: typ = 1.2 v basic characteristics f or t a = 25 c and applicable circuit conditions 1) operation characteristics (operation speed 6 degrees/second) ?operation angle (output: v ol v oh ): 25 to 60 degrees ?return angle (output: v oh v ol ): min. 20 degrees 2) output (v o ) characteristics (the sphere must be stationary.) ?v ol (photo transistor on): max. 1.0 v (horizontal) ?v oh (photo transistor off): min. 4.0 v (inclined at an angle of at least 60 degrees) terminal no. 1 terminal no. 4 tip switch terminal no. 2 terminal no. 3 v cc v o r 2 r 1 i f (v cc ) o p e r a t i o n a n g l e o p e r a t i o n a n g l e output characteristics h r e t u r n a n g l e r e t u r n a n g l e o u t p u t c h a r a c t e r i s t i c s l all rights rese r v ed ? c opyright panasonic elect r ic w o r k s co., ltd.
ahf2 dimensions mm specifications item speci?aitons electrical and mechanical life min. 10 5 (using the applicable circuit) at 6 cpm; opening and closing position: 0 deg. ? 90 deg. (the internal shpere must be stationary for at least 500 ms at angles of 0 and 90 deg. respectively.) vibration resistance 10 to 400 hz acceleration 2.9 m/s 2 applied for 7 days 5 to 10 hz at half amplitude of 5 mm, 5 10 5 cycles shock resistance 588 m/s 2 applied 3 times in each of 6 directions te r minal strength min. 9.8 n (each direction) dropping individual part three times from height of 100 cm high temperature, high humidity storage ability leave for 500 hours at 85 c and 85% rh (no freezing at low temperature) high temperature storage ability leave for 500 hours at 85 c low temperature storage ability leave for 500 hours at ?5 c (no freezing at low temperature) shock and heat resistance subject to 100 cycles each consisting of 30 minutes at ?5 c and 30 minutes at 85 c. resistance to hydrogen sul?e leave for 500 hours in an atmosphere containing 3 ppm of hydrogen sul?e at 40 c and 75% rh. resistance to sulfur dioxide gas leave for 500 hours in an atmosphere containing 10 ppm of sulfur dioxide at 40 c and 95% rh resistance to ammonia gas leave for 96 hours in an atmosphere containing 3% of ammonia gas at normal temperature and humidity. resistance to dust mix with 2 kg/m 3 talcum powder or ? ash and leave to stand for 8 hours ambient temperature ?0 to +80 c (no freezing nor condensation at low temperature) notes: 1.without any indications, speci?ations are measured at following conditions ?temperature: 15 to 35 c ?humidity: 25 to 85% rh ?atmospheric pressure: 86 to 106 kpa. 2.the evaluation criteria for performance are as follows: basic characteristics ?t a = 25 c and applicable circuit conditions 1) operation characteristics (operation speed 6 degrees/sec.) ?operation angle (output: v ol v oh ): 25 to 60 degrees ?return angle (output: v oh v ol ): 20 degrees min. 2) output (v o ) characteristics (the sphere must be stationary.) ?v ol (photo transistor on): 1.2 v max. (horizontal) ?v oh (photo transistor off): 3.8 v min. (inclined at an angle of at least 60 degrees) ?horizontal mounting type terminal no. 1 (led: anode) terminal no. 4 (photo transistor: emitter) pc board horizontal datum line horizontal datum line terminal no. 3 (photo transistor: collector) terminal no. 2 (led: cathode) 6.55 1.7 5 9.3 3.7 0.9 4.0 3.1 5.1 9.5 3.0 2.6 9.5 dia. c0.3 c0.3 7.9 9.5 11.5 pc board pattern (bottom view) terminal no. 1 (led: anode) terminal no. 2 (led: cathode) terminal no. 4 (photo transistor: emitter) 1.3 dia. terminal no. 3 (photo transistor: collector) 3.1 0.1 11.9 0.1 5.1 0.1 ?vertical mounting type 5.1 0.4 0.9 2.6 3.1 0.4 terminal no. 1 terminal no. 2 terminal no. 4 terminal no. 3 11.5 0.5 pc board pc board pattern (bottom view) terminal no. 4 (photo transistor: emitter) terminal no. 2 (led: cathode) terminal no. 3 (photo transistor: collector) terminal no. 1 (led: anode) 5.1 0.1 11.9 0.1 3.1 0.1 1.3 dia. all rights rese r v ed ? c opyright panasonic elect r ic w o r k s co., ltd.
ahf2 notes ?reverse mounting type terminal no. 1 terminal no. 4 terminal no. 2 terminal no. 3 5.1 0.5 3.1 0.5 11.5 0.7 2.6 0.9 pc board 11.9 mm pc board pattern (bottom view) [internal circuit and applicable circuit] terminal no. 4 (photo transistor: emitter) terminal no. 2 (led: cathode) terminal no. 3 (photo transistor: collector) terminal no. 1 (led: anode) 11.9 0.1 3.1 0.1 5.1 0.1 1.3 dia. terminal no. 1 terminal no. 4 tip switch terminal no. 2 terminal no. 3 v cc v o r 2 r 1 i f (v cc ) 1. handling 1) in the enent that a voltage or current that exceeds the maximum rating is applied to, or passed between the terminals, the photo-transistor will no longer function normally. in such a case, do not reuse the photo-transistor but discard it. 2) be careful not to apply an excessively large load to the terminals because this may damage the photo-transistor. 2. soldering 1) when soldering by hand, use a 18w soldering iron that has a temperature regulator (iron tip temperature must be no more than 350 c) and apply the tip to the joint for no more than 3 seconds. 2) when performing automatic soldering, ensure that the board does not remain in the solder bath for more than 10 seconds at 260 c, or more than 3 seconds at 350 c. 3) be careful not to move the terminals for one minute after soldering them. 3. environment this product is a non-contact type tip detection switch containing a photo- interrupter. it is intended for installation in equipment. because of the nature of a semiconductor, if this product is used continuously for a long period in a high temperature, low temperature and/or humid environment, according to the optic quantities decrease of luminescent diode output characteristics may be signi?antly affected. in such a case, take suitable measures, such as inserting a comparator at the output side, to provide a greater degree of margin with respect to change in the output characteristics, and thereby improve the reliability of the product. 4. preventing a malfunction 1) the tip sensor uses an internal sphere, hence chattering occurs if it is subjected to vibration or shock. to prevent chattering, continuously read pulses of 30 ms max. using a microprocessor, and set the microprocessor so that the switch goes l (on) or h (off) if the output level exceeds 500 ms continuously. also, take steps to keep induction and rf noise aw ay from the sensor. 2) the switch should be mounted keeping aw ay from the vibration generator such as motor. fix the pc board ?mly in order to prevent resonance with the vibration generator, or the contact chattering of a switch may occur by the movement of a ball inside. the allowable vibration level which the chattering does not occur w ould be less than {0.3g} at 10 to 260hz and 320 to 400hz. the range 260 to 320hz may have a resonance point and the level should be less than 0.1g. 5. others 1) depending on the circuitry and the environmental conditions, solder migration may occur and short a circuit. please con?m that the insulation distance is large enough in the actual application. 2) to prevent a malfunction, the switch should be kept away from the direct sunlight and any other light sources. 3) the noises caused by electrostatics, surge voltage and inductives may break the photo-interruptor. 4) the re?w soldering and cleaning are not allowed. 5) the switch should be mounted with the tolerance 3 degree. 6. con?mations in the actual use. each items in this spec sheet was tested and con?med independently at a certain duration. to get a higher reliability of the equipment, please con?m the switch quality with the actual load and environmental conditions before using. output of tip switch max. 30 ms continuous h for 500 ms or more judgement of switch off state transistor off transistor on all rights rese r v ed ? c opyright panasonic elect r ic w o r k s co., ltd.
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