OHB3040_14 Datasheet, PDF (1/3 Pages) OPTEK Technologies – Hallogic Hall-effect Sensor Assembly

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
Hallogic silicon chip
Suitable for military and space applications.
Performs in dirty environments over wide temperature range
0.125” (3.18 mm) wide gap
Product Photo Here
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:
 Non-contact slotted magnetic switch
 Harsh environment encoder
 Assembly line automation
 Machine automation
 Machine safety
 End of travel sensor
 Door sensor
1 Vcc
Voltage
Regulator
Hall
Element
Ordering Information
Part Number Description
OHB3040
OHB3040B Slotted Switch
OHB3040S
Output
3
2 Ground
[MILLIMETERS]
DIMENSIONS ARE IN: _INCHES
Pin #
1
2
3
Description
Vcc
Ground
Output
RoHS
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: [phone] or [phone]
FAX: [phone] [e-mail] www.optekinc.com
Issue B 03/2014
Page 1 of 3