Installation Instructions for the oresistive s Table 1. Electrical Specifications ( V < Vcc < 4 V, -40 C < Ta < 85 C [-40 F < Ta < 185 F] unless otherwise specified.) Characteristic Condition Min. Typ. Max. Unit Supply voltage (Vcc) Vcc reference to ground 1 4 V Supply current: off on Vcc = 5 V, T = 5 C [77 F] Vcc = 5 V, T = 5 C [77 F.5 4 8.5 5 ma Start-up time Vcc > V 10 µs Output leakage current Vcc = 4, off 10 µa Output saturation voltage load current = 0 ma 500 mv Rise time Fall time Vcc = 5 V, R = kohm, C = 0 pf Vcc = 5 V, R = kohm, C = 0 pf Table. ic Specifications ( V < Vcc < 4 V, -40 C < Ta < 85 C [-40 F < Ta < 185 F].) Characteristic Min. Typ. Max. Unit 1.5 1.5 µs SM51RT, SM451R: operate (positive) release (positive) hysteresis 7 4.8. 11 9 Gauss : operate (positive) release (positive) hysteresis 6 14 9. 5.7 0 18 Gauss NOTICE The magnetic field strength (Gauss) required to cause the switch to change state (operate and release) will be as specified in the magnetic characteristics. To test the switch against the specified magnetic characteristics, the switch must be placed in a uniform magnetic field. Table. Absolute Maximum Ratings Characteristic Condition Min. Typ. Max. Unit Operating temperature ambient -40 [-40] 85 [185] C [ F] Soldering temperature: SM51RT, SM5RT SM451R, SM45R ambient applied for < 10 s ambient applied for < s NOTICE These magnetoresistive sensor ICs 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 <Bop). Honeywell recommends allowing 10 μs for output voltage to stabilize after supply voltage has reached its final rated value. 45 [47] 60 [500] Supply voltage (Vs) -6 6 V Load current output sinking (open collector) 40 ma C [ F] NOTICE Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and mechanical characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are approached, nor will the device necessarily operate at absolute maximum ratings. CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN OR HANDLE EXCEPT AT A STATIC FREE WORKSTATION ESD SENSITIVITY: CLASS A Sensing and Productivity Solutions
oresistive s Figure 1. Typical ic Performance Over Temperature SM51RT, SM451R ic Switch Point (Gauss) 10 9 8 7 6 5 4 1 0-40 [-40] -0 [-4] Operate Gauss Release Gauss 0 [] Differential Gauss 0 [68] 40 [104] Temperature ( C [ F]) 60 [140] 80 [176] 18.0 ic Switch Point (Gauss) 16.0 14.0 1.0 10.0 8.0 6.0 4.0.0 Operate Gauss Release Gauss Differential Gauss 0.0-40 [-40] -0 [-4] 0 [] 0 [68] 40 [104] 60 [140] 80 [176] Temperature ( C [ F]) Figure. Block/Electrical Diagram AMR Sensor Trigger circuit and amplifier Vcc (+) Output (O) Gnd (-) Sensing and Productivity Solutions
oresistive s Figure. Alignment of the to the SOT- Package (SM51RT, SM5RT) Omnipolar oresistive Ideal alignment: The magnet is aligned in the same plane as the sensor IC. The magnetic flux lines stay horizontal as the magnet approaches the sensor IC (see Figure.A). Figure.A SM51RT, SM5RT movement Offset alignment: The magnet is not aligned in the same plane as the sensor IC. Parallel magnet approach to the sensor IC may cause dead zones. Dead zones may occur when the majority of the magnet s magnetic flux lines become vertical as it approaches the sensor IC, turning the sensor IC ON, then OFF, then ON (see Figure.B). Figure.B SM51RT, SM5RT Perpendicular magnet approach to the sensor IC eliminates possible dead zones. The sensor IC detects the approaching magnet s horizontal magnetic flux lines, turning the sensor IC to ON. The sensor IC stays ON as the magnet continues to approach. When the magnet is located directly over the sensor IC, all magnetic flux lines are now horizontal (see Figure.C). (Note: This alignment decreases the magnetic flux strength at the sensor IC.) Figure.C SM51RT, SM5RT end view top view movement Sensing and Productivity Solutions
oresistive s Figure 4. Alignment of the to the TO-9-Style Package (SM451R, SM45R) Omnipolar oresistive Ideal alignment: The magnet is aligned in the same plane as the sensor IC. The magnetic flux lines stay horizontal as the magnet approaches the sensor IC (see Figure 4.A). SM451R, SM45R Figure 4.A movement Offset alignment: The magnet is not aligned in the same plane as the sensor IC. Parallel magnet approach to the sensor IC may cause dead zones. Figure 4.B Dead zones may occur when the majority of the magnet s magnetic flux lines become vertical as it approaches the sensor IC, turning the sensor IC ON, then OFF, then ON (see Figure 4.B). SM451R, SM45R movement Perpendicular magnet approach to the sensor IC eliminates possible dead zones. The sensor IC detects the approaching magnet s horizontal magnetic flux lines, turning the sensor IC to ON. The sensor IC stays ON as the magnet continues to approach. When the magnet is located directly over the sensor IC, all magnetic flux lines are now horizontal (see Figure 4.C). (Note: This alignment decreases the magnetic flux strength at the sensor IC.) Figure 4.C SM451R, SM45R end view top view movement 4 Sensing and Productivity Solutions
oresistive s Figure 5. SM51RT, SM5RT, Tape and Reel Mounting Dimensions (For reference only. mm/[in].),80 [0.110] 1,60 [0.06],90 [0.114] GND (-) NOMINAL TO IC CENTER Showing Polarity or 1 VCC (+) 0,95 [0.07] 1,90 [0.075] OUTPUT X 0,40 TYP. [0.016] NOMINAL TO AMR EFFECT SENSING SURFACE 0,41 [0.016] 0,15 TO CENTERLINE OF [0.006] AML ELEMENT 1,40 MAX. [0.110] 1,0 [0.047] 0,77 [0.00] Tape 0,15 [0.006] 0,0 [0.008] [0.157],00 [0.079] 0,60 [0.04] [0.157] 0,787 [0.01] 1,5 [0.059] A 1,75 [0.069] 8,0 [0.15],50 [0.18],0 [0.15] Reel 0,061 TOP [0.00] COVER TAPE 1,40 [0.055] Section A-A [0.157],15 [0.14] A 10,9 [0.49] MEASURED AT OUTER EDGE 1,00 MIN. [0.09] 40,0 [1.57] 10 [0.94] 14,4 [0.567] MEASURED AT HUB 60,0 [.6],0 [0.079] 178 MAX. [7.000] 1,0 [0.51] 0, MIN. [0.795] 8,40 MEASURED [0.1] AT HUB Sensing and Productivity Solutions 5
oresistive s Figure 6. SM451R and SM45R Mounting Dimensions (For reference only. mm/[in].) E [0.016],50 [0.10] 0,75 [0.00] 1,5 [0.06] Showing Polarity or 1,89 IC SENSING [0.074] SURFACE,00 [0.1] 1 VCC (+) GND (-) OUTPUT 14,5 [0.57] X 0,8 [0.015] X 1,7 MAX. [0.0] X 0,56 MAX. [0.0] X 0,8 [0.015] 6 Sensing and Productivity Solutions
WARNING PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury. WARRANTY/REMEDY Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Honeywell s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items it finds defective. The foregoing is buyer s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages. While we provide application assistance personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. Honeywell serves its customers through a worldwide network of sales offices, representatives and distributors. For application assistance, current specifications, pricing or name of the nearest Authorized Distributor, contact your local sales office or: E-mail: info.sc@honeywell.com Internet: sensing.honeywell.com Phone and Fax: USA/Canada +1-800-57-6945 International +1-815-5-6847; +1-815-5-6545 Fax Sensing and Productivity Solutions Honeywell 1985 Douglas Drive North Golden Valley, MN 554 honeywell.com -C-EN IL50 January 016 016 Honeywell International Inc. All rights reserved.