High Sensitivity, Latching Digital Hall-effect Sensor ICs: 32309592 Issue A SS361CT, SS461C Datasheet FEATURES SS361CT Enhanced sensitivity Latching magnetics respond to alternating North and South SS461C poles Wide operating voltage range of 4 Vdc to 24 Vdc Built-in reverse voltage capability enhances the protection of the sensor and the circuits with which it is used Robust design: will operate up to 125 C 257 F RoHS-compliant materials meet Directive 2002/95/EC POTENTIAL APPLICATIONS Transportation Speed and RPM sensing Tachometer, counter pickup DESCRIPTION Motor and fan control The SS361CT and SS461C High Sensitivity Latching Hall-effect Electronic window lift Sensor ICs are small, sensitive, and versatile devices that are Convertible roof position operated by the magnetic field from a permanent magnet or Industrial an electromagnet. They are designed to respond to alternating Flow-rate sensing for appliances North and South poles. The SS361CT is turned on by a North Speed and RPM sensing pole while the SS461C is turned on by a South pole. Tachometer, counter pickup Brushless dc motor commutation These products offer reverse polarity protection and deliver Motor and fan control enhanced sensitivity of only 50 G typical, at 25 C 77 F , 80 Robotics control G max. at -40 C to 85 C -40 F to 185 F , and 95 G over the full temperature range, allowing the use of smaller, potentially PORTFOLIO lower-cost magnets or wider air gaps. The SS361CT and SS461C are part of Honeywells family of These products are available in three package styles: Latching Digital Hall-effect Sensor ICs, including: SS361CT: Subminiature SOT-23 surface-mount package SS360PT, SS460P, SS460P-T2 on tape and reel which allows for compact design with SS360NT, SS360ST, SS360ST-10K SS460S, SS460S-T2 automated component placement. SS361RT, SS461R SS461C : Flat TO-92-style package with straight leads in bulk SS46 packaging which allows for a compact PC board layout. SS461A, SS466A Sensing and Productivity SolutionsHigh Sensitivity Latching Digital Hall-effect Sensor ICs: SS361CT, SS461C Table 1. Electrical and Environmental Specifications (At Vs = 4.0 Vdc to 24.0 Vdc, 20 mA load, T = -40 C to 125 C -40 F to 257 F except where otherwise specified. A Characteristic CCondition Min. Typ. Max. Unit Supply voltage 4.0 24.0 VVdc V = 5 Vdc at 25 C 77 F 6.0 supply Supply current mA 8.0 Output current 20.0 mA V Gauss > 95 0.4 V sat Output leakage current Gauss < -95 10.0 A Rise/fall time 25 C 77 F 1.5 s Thermal resistance single layer, single sided PCB 303 C/W Magnetic characteristics: Operate (Bop) -40 C to 85 C -40 F to 185 F 5 50 80 Operate (Bop) -5 50 95 Release (Brp) -40 C to 85 C -40 F to 185 F -80 -50 -5 Gauss Release (Brp) -95 -50 -5 Differential -40 C to 85 C -40 F to 185 F 50 100 160 Differential 50 100 190 Operating temperature -40 -40 125 257 C F Storage temperature -40 -40 150 302 C F Soldering temperature and time: SS361CT infrared reflow process: 245 C 473 F for 10 s max. SS461C wave soldering process: 250 C to 260 C 482 F to 500 F for 3 s max. NOTICE NOTICE CAUTION These Hall-effect sensor ICs may have an The magnetic field strength (Gauss) ELECTROSTATIC SENSITIVE initial output in either the ON or OFF state required to cause the switch to change DEVICES if powered up with an applied magnetic state (operate and release) will be as DO NOT OPEN OR HANDLE field in the differential zone (applied EXCEPT AT A specified in the magnetic characteristics. STATIC FREE WORKSTATION magnetic field >Brp and <Bop). Honeywell To test the switch against the specified recommends allowing 10 s after supply ESD SENSITIVITY: limits, the switch must be placed in a voltage has reached 5 V (SS361CT) or CLASS 1C uniform magnetic field. 3 V (SS461C) for the output voltage to stabilize. Table 2. Absolute Maximum Specifications Characteristic Min. Typ. Max. Unit Supply voltage -28.0 28.0 V Applied output voltage -0.5 28.0 V Output current 20.0 mA Magnetic flux no limit Gauss NOTICE Absolute maximum ratings are the extreme limits the device will momentarily withstand without damage to the device. Electrical and mechanical characteristics are not guaranteed if the specified voltage and/or currents are exceeded, nor will the device necessarily operate at absolute maximum ratings. Sensing and Productivity Solutions 2