OPB350 OPTEK | Alldatasheet

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Technical content

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.4 02/06 Page 1 of 4 Tube Liquid Sensor OPB350 Series Applications:

  • Non-contact fluid sensing
  • IV fluid
  • Oils and other petroleum products
  • Colored fluids
  • Toner fluids
  • Water

Ordering Information

Part Number Package LED Peak Wavelength Sensor Tube Size Lead Length / Spacing OPB350 N 890 nm Transistor 0.125" 0.330” / 0.320” OPB350L187 0.187" OPB350L250 0.250" OPB350W187Z 0.187" 24" / 26 AWG Wire OPB350W250Z 0.250" T Features:

  • Can identify if liquid is present in clear tubes that have an outside diameter of 1/8" (3.2mm), 3/16" (4.8mm) or 1/4" (6.3mm)
  • Opaque plastic housing enhances ambient light rejection
  • Printed circuit board mounting or 24” (610 mm) wires Description: The OPB350 series liquid sensor is designed to work with 1/8” (3.2mm), 3/16” (4.8mm) and 1/4” (6.3mm) outside diameter clear tubes. When output reference circuitry is added, multiple output states such as “fluid present,” “no fluid present” and “no tube present” can be recognized. Clear liquid present causes the phototransistor to sink the maximum current, while dark liquid present causes it to sink the minimum current. As bubbles pass through the tube, the signal will vary between the “liquid present” and “no liquid” states. If no liquid is present, the phototransistor sinks only a small amount of current. If no tube is present, the phototransistor sinks a larger current than in the “no liquid” state. Smaller outside diameter tubes can be used when the tube is sized up to one of the standard sizes and is fitted properly in the housing opening. For example, fluid in a 1/16” (1.6mm) outside diameter tube can be sensed when a piece of tubing with a 1/8” (3.2mm) outside diameter and a 1/16” (1.6mm) inside diameter is used as an adapter. Product Photo Here Opto Switch C1=0.1 uf R4=2K R1=1K LM393 or LM339 LM393 or LM339 R2=2K R3=750 Vcc Gnd Vcc Vth Vth Vth Gnd Vth R1=500 R4=2.5K C1=0.1 uf Output Output Typical Application Circuit OPB350 “N” Package “T” Package RoHS

OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.4 02/06 Page 2 of 4 Tube Liquid Sensor OPB350 Series OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Pin # LED Pin # Transistor Red Anode White Collector Black Cathode Green Emitter OPB350W187Z and OPB350W250Z OPB350L187 and OPB350L250 OPB350 Pin # LED Pin # Transistor

1 Anode 3 Collector

2 Cathode 4 Emitter

Pin # LED Pin # Transistor

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.4 02/06 Page 3 of 4 Tube Liquid Sensor OPB350 Series Notes: (1) All parameters tested using pulse technique. (2) RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering. (3) Methanol or isopropanol are recommended as cleaning agents. T he plastic housing is soluble in chlorinated hydrocarbons and keytones. (4) Derate linearly 1.33 mW/° C above 25° C. (5) E e(APT) is a measurement of the average apertured radiant energy incident upon a sensing area 0.250” (6.350 mm) in diameter, which is perpendicular to and centered to the mechanical axis of the emitting surface at a distance of 0.466” (11.837 mm). E e(APT) is not necessarily uniform within the measured area. Absolute Maximum Ratings (TA=25°C unless otherwise noted) Storage Temperature -40° C to +100° C Operating Temperature -40° C to +85° C Lead Soldering Temperature [1/16 inch (1.6mm) from the case for 5 sec. with soldering iron] (2) 260° C LED Forward DC Current 50 mA Peak Forward Current (2 µs pulse width, 0.1% duty cycle) 1 A Reverse DC Voltage 2 V Power Dissipation 100 mW Output Phototransistor Collector-Emitter Voltage 25 or 30 V Collector DC Current 50 mA Power Dissipation 100 mW Electrical Characteristics (TA = 25°C unless otherwise noted) SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS Input LED (See OPB245 for additional information — for reference only) VF Forward Voltage - - 1.8 V I F = 20 mA IR Reverse Current - - 100 µA V R = 2.0 V Output Phototransistor (See OPB555 [PB350] & OP750 [-187 & -250] for additional information — for reference only) V(BR)CEO Collector-Emitter OPB350 Breakdown Voltage -187 & -250 - V I C = 100 µA, EE = 0 mw/cm2 ICEO Collector-Emitter Dark Current - - 100 nA V CE = 10 V, IF = 0, EE = 0 mw/cm2 VCE(SAT) Collector-Emitter Saturati on Voltage - - 0.4 V I C = 100 µA, IF = 5 mA IC(ON) On-State Collector Current OPB350 OPB350L187 & OPB350W187 OPB350L250 & OPB350W250 0.75 3.5 1.5 mA mA mA V CE = 0.4 V, IF = 5 mA VCE = 0.4 V, IF = 5 mA VCE = 0.4 V, IF = 5 mA On/Off Ratio OPB350 OPB350L187 & OPB350W187 OPB350L250 & OPB350W250 2.3 2.3 V CE = 0.4 V, IF = 5 mA , I.D.=0.0625” VCE = 0.4 V, IF = 5 mA , I.D.=0.0870” VCE = 0.4 V, IF = 5 mA , I.D.=0.1250”

OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.4 02/06 Page 4 of 4 Tube Liquid Sensor OPB350 Series OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. 0.0 0.2 0.4 0.6 0.8 1.0 1.2 -40 -20 0 20 40 60 80 100 Relative I C(ON) Normalized @ T=20°C Normalized IC(ON) vs Temperature Temperature (°C) 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 - 4 0 - 2 00 2 04 06 08 0 1 0 0 VSAT (Volts) Normalized @ I F = 5mA, ICE = 100uA Temperature (°C) Typical VSAT vs Temperature 100 150 200 250 300 123456789 1 0 Rise & Fall Time (usec) Fall Rise VR2 = 1.0 Rise & Fall Time vs Load Resistance Load Resistance (,000 Ohms) Test Circuit (Rise & Fall Time)