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AHF2 (TiP) Switches

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SPST-NC (The photo transistor is ON when the sensor is being used.)

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Internal and Applicable Circuit

  • VCC = 5 V
  • R2 = 100 kΩ
  • Forward current, IF, of the LED: 19 mA (VCC = 5 V, R1 = 200 Ω)
  • Forward voltage, VF, of the LED: Typ = 1.2 V

Please set the power supply voltage (VCC) and circuit resistance (R1 and R2) to within ±5%.

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Basic Characteristics

For Ta = 25°C and applicable circuit conditions

  • 1.Operation characteristics (Operation speed 6 degrees/second)
  • Operation angle (Output: VOL → VOH): 25 to 60 degrees
  • Return angle (Output: VOH → VOL): Min. 20 degrees
  • 2.Output (VO) characteristics (The sphere must be stationary.)
  • VOL (photo transistor ON): Max. 1.0 V (horizontal)
  • VOH (photo transistor OFF): Min. 4.0 V (inclined at an angle of at least 60 degrees)
Note: Output characteristics are the values of the applied circuit conditions, below.
Also, the microcomputer input terminals actually used use the following voltages.
Low level input terminal: 1.5 V or less
High level input terminal: 3.5 V or higher
Please use with a detection method to prevent malfunction.
Refer to the “Preventing a malfunction” of “CAUTIONS FOR USE”.

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Absolute maximum rating

Ta = 25°C

Item Symbol Rating Unit
Input side
Infrared light emitting diode
(between terminal No.1 and No.2)
Forward Current IF 50 mA
Reverse Voltage VR 5 V
Power Dissipation PO 75 mW
Output side
Phototransistor
(between terminal No.3 and No.4)
Collector-Emitter Voltage VCEO 30 V
Emitter-Collector Voltage VECO 3 V
Collector Current IC 20 mA
Collector Power Dissipation PC 50 mW

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Characteristics

Item Specificaitons
Electrical and mechanical expected life Min. 105 (Using the applicable circuit) Switching frequency: 6 cpm;
Opening and closing position: 0 degrees ↔ 90 degrees
(The internal shpere must be stationary for at least
500 ms at angles of 0 and 90 degrees respectively.)
Vibration resistance 10 to 400 Hz acceleration 2.9 m/s2 applied for 7 days
5 to 10 Hz at single amplitude of 5 mm, 5×105 cycles
Shock resistance 588 m/s2 applied 3 times in each of 6 directions
Terminal strength Min. 9.8 N (each direction) Modification of a terminal is expected from a judgment
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 condensing)
High temperature storage ability Leave for 500 hours at 85°C
Low temperature storage ability Leave for 500 hours at –25°C (no freezing)
Shock and heat resistance Subject to 100 cycles each consisting of 30 minutes at –25°C and 30 minutes at 85°C.
Resistance to hydrogen sulfide Leave for 500 hours in an atmosphere containing 3 ppm of hydrogen sulfide 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/m3 talcum powder or fly ash and leave to stand for 8 hours
Ambient temperature –20 to +80°C (no freezing and condensing)
Unit weight Approx. 1 g
Protection grade IP40
*1Without any indications, specifications are measured at following conditions
Temperature: 15 to 35°C, Humidity: 25 to 85% RH, Atmospheric pressure: 86 to 106 kpa.
*2The evaluation criteria for performance are as follows:
Basic characteristics - Ta = 25°C and applicable circuit conditions
1)   Operation characteristics (operation speed 6 degrees/sec.)
• Operation angle (Output: VOL → VOH): 25 to 60 degrees
• Return angle (Output: VOH → VOL): 20 degrees min.
2)   Output (VO) characteristics (The sphere must be stationary.)
• VOL (photo transistor ON): Max. 1.2 V (horizontal)
• VOH (photo transistor OFF): Min. 3.8 V (inclined at an angle of at least 60 degrees)

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