DESCRIPTION
The SS41F/SS41G Series are small, versatile digital Hall-effect
devices that are operated by the magnetic field from a
permanent magnet or an electromagnet, and are designed to
respond to alternating North and South poles.
A built-in regulator provides enhanced stability of operation
over 4.5 Vdc to 24 Vdc supply voltage range, and internal
circuitry is designed to prevent sensor damage in case the
supply voltage polarity is accidentally reversed.
The open-collector sinking output voltage is easily interfaced
with a wide variety of electronic circuits.
The SS41F is factory tested at 25 °C [77 °F] and the SS41G is
factory tested at both 25 °C [77 °F] and 125 °C [257 °F].
Both products are designed for high volume applications.
FEATURES AND BENEFITS
Small, leaded, flat TO-92-style package allows for a
compact PCB layout
Wide operating voltage range of 4.5 Vdc to 24 Vdc makes
these sensors useable in a variety of applications
Current consumption of only 5 mA max. at 4.5 Vdc for
energy efficiency
Bipolar magnetics for ring magnet applications with
alternating North and South poles
Robust design: will operate up to 150 °C [302 °F]
RoHS-compliant materials meet Directive 2002/95/EC
POTENTIAL APPLICATIONS
Transportation
Speed and RPM sensing
Commutation and control of electric motors used in
transportation
Industrial and Commercial
Flow-rate sensing for appliances
Tachometer, counter pickup
Brushless dc motor commutation
Motor and fan control for commercial, consumer or
industrial equipment
Medical
Any medical equipment or instruments using electric
motors
2 www.honeywell.com/sensing
Table 1. SS41F Specifications (At Vs = 4.5 Vdc to 24 Vdc supply, 20 mA load, Ta = 25 ºC [77 ºF] unless otherwise noted.)
Characteristic
Condition
Min.
Typ.
Max.
Unit
Supply voltage
4.5
24.0
Vdc
Supply current
6.8
10.0
mA
Output current
20.0
mA
Vsat at 15 mA
Vs = 12 Vdc, Bop >170
0.4
V
Output leakage
Vs = 24 Vdc, Brp <170
10
A
Rise time
Vs = 4.5 Vdc
0.5
1.5
s
Fall time
Vs = 4.5 Vdc
0.2
1.5
s
Operate (Bop)
40
150
Gauss
Release (Brp)
-150
-40
Gauss
Differential
40
Gauss
Operating temperature
-40 [-40]
–
150 [302]
°C [°F]
Storage temperature
–
-40 [-40]
–
150 [302]
°C [°F]
Table 2. SS41G Specifications (At Vs = 4.5 Vdc to 24 Vdc, 20 mA load, Ta = -40 C to 150 C [-40 F to 302 F] unless
otherwise noted.)
Characteristic
Condition
Min.
Typ.
Max.
Unit
Supply voltage
4.5
24.0
Vdc
Supply current
output OFF
6.8
10.0
mA
Supply current
output ON
11.3
mA
Output current
20.0
mA
Vsat at 20 mA
25 C [77 F], Vs = 12 Vdc, Bop >170
0.4
V
Output leakage
Vs = 24 Vdc, Gauss <170
10
A
Rise time
25 C [77 F]
0.5
1.5
s
Fall time
25 C [77 F]
0.2
1.5
s
Operate (Bop)
25 C [77 F]
40
150
Gauss
Operate (Bop)
250
Gauss
Release (Brp)
25 C [77 F]
-140
-40
Gauss
Release (Brp)
-250
Gauss
Differential
40
Gauss
Operating temperature
-40 [-40]
–
150 [302]
°C [°F]
Storage temperature
–
-40 [-40]
–
150 [302]
°C [°F]
NOTICE
Bipolar Hall-effect 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 rated value.
Table 3. SS41F/SS41G Series Absolute Maximum Ratings1
Characteristic
Min.
Typ.
Max.
Unit
Supply voltage
-28.0
–
28.0
V
Applied output voltage
-0.5
–
28.0
V
Output current
–
–
20
mA
Magnetic flux
–
–
no limit
Gauss
Note 1: 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.
Honeywell Sensing and Control 3
Figure 1. Magnetic Performance vs Temperature
Figure 2. Current Sinking Output Block Diagram
Typ. Operate
Max Operate
Typ. Release
Vs = 12Vdc
Min Release
-250
-200
-150
-100
-50
0
50
100
150
200
250
-40 -20 0 20 40 60 80 100 120 140
Temperature (°C)
Magnetic Switch Point (Gauss)
Figure 3. Wiring Diagrams
Figure 4. Mounting Dimensions (For reference only. mm/[in].)
2,5
[0.100]
1,6
[0.062]
3X 0,3
[0.015]
0,76
[0.03]
4,1
[0.161]
2X 1,3
[0.050] 3X 0,43
[0.017]
3X 0,38
[0.015]
3.0
[0.118]
GNDVS OUT
14,61
[0.575]
NS
1,83
[0.072]
0,46
[0.018] NOMINAL
TO IC
SENSING
SURFACE
NOMINAL
IC CENTER
Sensing and Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422
www.honeywell.com/sensing
005889-2-EN IL50 GLO Printed in USA
October 2010
© 2010 Honeywell International Inc. All rights reserved.
Order Guide
Catalog Listing
Description
SS41F
Low-cost digital bipolar Hall-effect sensor IC, tested at 25 °C [77 °F], flat TO-92-style package, bulk
packaging (1000 units per bag)
SS41G
Low-cost digital bipolar Hall-effect sensor IC, tested at 25 °C [77 °F] and 125 °C [257 °F], flat TO-92-style
package, bulk packaging (1000 units per bag)
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.
WARNING
MISUSE OF DOCUMENTATION
The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result
in death or serious injury.
SALES AND SERVICE
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: www.honeywell.com/sensing
Phone and Fax:
Asia Pacific +65 6355-2828
+65 6445-3033 Fax
Europe +44 (0) 1698 481481
+44 (0) 1698 481676 Fax
Latin America +1-305-805-8188
+1-305-883-8257 Fax
USA/Canada +1-800-537-6945
+1-815-235-6847
+1-815-235-6545 Fax