Hallogic Hall-effect Sensor Assembly OHB3040, OHB3040B & OHB3040S Features: Non-contact motion sensing Operates over a broad range of supply voltages (4.5 V to 25 V) Excellent temperature stability Hall element, linear amplifier and Schmitt trigger on a single Product Photo Here Hallogic silicon chip Suitable for military and space applications. Performs in dirty environments over wide temperature range 0.125” (3.18 mm) wide gap Description: The OHB3040 consists of a ceramic Hall-effect sensor (OMH3040) and a rare earth magnet mounted in a low-cost plastic housing. The magnet produces optimum magnetic flux at the Hall-effect sensor location. The sensor has an open collector transistor output, which is activated when the slot is open. When the slot is blocked by a ferrous material that reduces the magnetic flux density at the Hall-effect sensor location, the open collector output transistor switches off. The device provides up to 25 mA of sink current. Output characteristics are constant at switching frequencies from DC to over 200 kHz. The OHB3040B has Hi-Reliability processing level B while the OHB3040S has Hi-Reliability processing level S. The Uni-Polar turns on with a (logic level “0”) after a sufficient magnetic field from the south pole of a magnet approaches the symbolized face of the device (Operating Point) and turns off (logic level “1”) after the magnetic field reached a minimum value. This feature makes these sensors ideal for applications in non-contact switching operations. Applications: Ordering Information Non-contact slotted magnetic switch Harsh environment encoder Assembly line automation Machine automation Machine safety End of travel sensor Door sensor Part Number Description OHB3040 OHB3040B Slotted Switch OHB3040S 1 Vcc Voltage Regulator Hall Element Output 3 DIMENSIONS ARE IN: 2 Ground RoHS Pin # [MILLIMETERS] INCHES Description 1 Vcc 2 Ground 3 Output 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 [email protected] www.optekinc.com Issue B 03/2014 Page 1 of 3 Hallogic Hall-effect Sensor Assembly OHB3040, OHB3040B & OHB3040S Absolute Maximum Ratings (TA = 25° C unless otherwise noted) Supply Voltage, VCC 25 V Storage Temperature Range, TS -50°C to +160° C Operating Temperature Range, TA -40°C to +125° C Lead Soldering Temperature (1/8 in. (3.2 mm) from case for 5 sec. with soldering iron) 260° C Output ON Current, ISINK 25 mA 25 V Output OFF Voltage, VOUT Magnetic Flux Density, B Unlimited Electrical Characteristics (VCC = 4.5 V to 24 V, TA = 25° C unless otherwise noted)(2) SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS ICC Supply Current - 4 7 mA VCC = 24 V, Output Off VOL Output Saturation Voltage - 100 400 mV VCC = 4.5 V, IOL = 20 mA, Slot Open IOH Output Leakage Current - 0.1 10 µA V = 4.5 V, VOUT = 24 V, Slot Blocked(1) tr Output Rise Time - 0.21 1 µs RL = 820 Ω, CL = 20 pF tf Output Fall Time - 0.1 1 µs RL = 820 Ω, CL = 20 pF Notes: (1) Slot blocked with a ferrous material to interrupt magnetic flux. (2) See Hall-effect data sheet OH090 through OHS3100 Series for additional information — for reference only. B OP B RP Right Operate Point Right Release Point Left Release Point Left Operate Point Minimum 0.073" [1,85mm] 0.045" [1,14mm] -0.045" [-1,14mm] -0.073" [-1,85mm] Maximum 0.003" [0,08mm] -0.005” -0.005" [-0.127mm] [-1,27mm] 0.005” 0.005" [0.127mm] [1.27mm] -0.003" [-0,08mm] Magnetic Field V OH 90% 90% Tf V OL Tr ROP 10% 10% Vcc 1 820 Ohm U.U.T. Measurements are referenced to Center Line. Output 3 M RRP S Center Line LOP LRP Vane - Material = 1018 Cold Rolled Steel - 0.03" [0.76mm] Thick 0.50” [12.7mm] Location = 0.50" [1.27mm] from Bottom of Slot 20 pf Ground 2 OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue B 03/2014 Page 2 of 3 OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 [email protected] www.optekinc.com Hallogic Hall-effect Sensor Assembly OHB3040, OHB3040B & OHB3040S Rise & Fall Time vs Temperature Temperature Icc Icc vs vs Temperature Rise & Fall vs Temperature 350 9 Icc ON Icc OFF 8 300 7 6 Typical Icc (mA) Typical Time (ns) 250 200 150 5 4 3 100 2 50 Rise 1 Fall 0 0 -50 -25 0 25 50 75 100 125 -50 150 -25 0 25 50 75 100 125 150 Temperature (°C) Temperature (°C) Saturation Voltage Temperature Saturation Voltage vs vs Temperature 0.4 Sat Voltage Typical Saturation Voltage (V) 0.35 0.3 0.25 0.2 0.15 0.1 -50 -25 0 25 50 75 100 125 150 Temperature (°C) 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 [email protected] www.optekinc.com Issue B 03/2014 Page 3 of 3