SS361RT

SS361RT/SS461R Bipolar Latch, Hall-Effect Magnetic Position Sensors DESCRIPTION The SS361RT’s small size requires less PC board space, The SS361RT/SS461R sensors are small, versatile digital Hall- allowing it to be used in smaller assemblies. Its 3 V capability effect devices that are operated by the magnetic field from a allows for use in low voltage applications, promoting energy permanent magnet or an electromagnet, designed to respond efficiency. to alternating North and South poles. These bipolar latching sensors have enhanced sensitivity The SS361RT is available on tape and reel; the SS461R is available in a bulk package (1000 units per bag). which often allows for the use of less expensive magnets. These sensors are available in two package styles, the SS361RT in the miniature SOT-23 surface mount package and the SS461R in the leaded, flat TO-92-style package. FEATURES • Enhanced sensitivity • Miniature package size • Low voltage: 3 V operation • Built-in reverse voltage protection • Robust design: will operate up to 150 °C [302 °F] POTENTIAL APPLICATIONS Transportation: • Speed and RPM (revolutions per minute) sensing • Tachometer, counter pickup • Motor and fan control • Electric window lift • Convertible roof position • Automotive transmission position Industrial: • Speed and RPM (revolutions per minute) sensing • Tachometer, counter pickup • Flow-rate sensing • Brushless dc (direct current) motor commutation • Motor and fan control • Robotics control Medical: • Motor assemblies • Medication dispense control SS361RT/SS461R Table 1. SS361RT/SS461R Performance Specifications (At 3.0 Vdc to 18 Vdc supply, 20 mA load, TA = -40 ºC to 150 ºC [-40 ºF to 257 ºF] Characteristic 1 Supply voltage SS461R SS361RT SS361RT Supply current Vsat Output leakage current Output switching time: rise fall Operate Release Differential Operating temperature SS461R SS361RT Storage temperature Condition Minimum Typical Maximum 3 3 3 – – – – – – – – 4 3.5 – – – 18 18 12 6 5 8 0.4 10 – – 5 -120 50 – – 50 -50 100 1.5 1.5 120 5 170 gauss gauss gauss -40 [-40] – 150 [302] °C [°F] -40 [-40] – 150 [302] °C [°F] -40 °C to 150 °C [-40 °F to 302 °F] -40 °C to 125 °C [-40 °F to 257 °F] 150 °C [302 °F] Vsupply = 5 V at 25 °C [77 °F] Vsupply = 3 V at 25 °C [77 °F] at 15 mA, gauss >120 gauss >120 Vsupply = 12 V at 25 °C [77 °F], RL =1.6 KOhm, CL = 20 pF – – – 3 V to 18 V 3 V to 12 V – Unit V mA V µA µs Note: 1. See Figure 1. NOTICE Bipolar Hall-effect sensors may have an initial output in either the ON or OFF state if powered up with an applied magnetic field in the differential zone (applied magnetic field >Brp and