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What is A3161?

This electronic component, produced by the manufacturer "Allegro MicroSystems", performs the same function as "HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS".


A3161 Datasheet PDF - Allegro MicroSystems

Part Number A3161
Description HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
Manufacturers Allegro MicroSystems 
Logo Allegro MicroSystems Logo 


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V
CC
12
3
3161
HALL-EFFECT SWITCH
FOR 2-WIRE APPLICATIONS
This Hall-effect switch is a monolithic integrated circuit designed to
operate continuously over extended temperatures to +85°C. The unipo-
lar switching characteristic makes this device ideal for use with a simple
bar or rod magnet. The A3161ELT and A3161EUA are identical except
for package.
Each device includes a voltage regulator for operation with supply
voltages of 3.5 to 25 volts, reverse battery protection diode, quadratic
Hall-voltage generator, temperature compensation circuitry, small-signal
amplifier, Schmitt trigger, and a constant-current open-collector output.
Noise radiation is limited by control of the output current slew rate.
Two package styles provide a magnetically optimized package for
most applications. Suffix ‘LT’ is a miniature SOT-89/TO-243AA
transistor package for surface-mount applications; suffix ‘UA’ is a three-
lead ultra-mini SIP for through-hole mounting.
Dwg. PH-003-3
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC
Continuous ................................. 28 V
Surge (tw 100 ms) .................... 40 V
Reverse Battery Voltage, VRCC
Continuous ................................ -25 V
Surge (tw 100 ms) ................... -40 V
Magnetic Flux Density, B ....... Unlimited
Output OFF Voltage, VOUT .............. 28 V
Operating Temperature Range,
TA ............................. -40°C to +85°C
Storage Temperature Range,
TS ........................... -65°C to +170°C
FEATURES and BENEFITS
I Internal Current Regulator for 2-Wire Operation
I Output Slew Rate Controlled
I 3.5 V to 25 V Operation … Needs Only An Unregulated Supply
I Reverse Battery Protection
I Excellent Temp. Stability
I Activate with Small, Commercially Available Permanent Magnets
I Small Size
I Solid-State Reliability … No Moving Parts
I Resistant to Physical Stress
Always order by complete part number, e.g., A3161ELT .

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A3161 equivalent
3161
HALL-EFFECT SWITCH
FOR 2-WIRE APPLICATIONS
0.167
0.155
PACKAGE DESIGNATOR ‘LT’
Dimensions in Inches
(for reference only)
0.181
0.173
0.072
0.064
0.063
0.055
0.102
1 2 3 0.090
0.090
0.084
0.0173
0.0138
0.047
0.035
0.059
BSC
0.0189
0.0142
0.0221
0.0173
0.118
BSC
Dwg. MA-009-3A in
Dimensions in Millimeters
(controlling dimensions)
4.60
4.40
1.83
1.62
1.60
1.40
4.25
3.94
2.60
1 2 3 2.29
2.29
2.13
0.44
0.35
1.20
0.89
1.50
BSC
0.48
0.36
0.56
0.44
3.00
BSC
Dwg. MA-009-3A mm
www.allegromicro.com


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for A3161 electronic component.


Information Total 8 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
A3161The function is HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS. Allegro MicroSystemsAllegro MicroSystems
A3161ELTThe function is HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS. Allegro MicroSystemsAllegro MicroSystems
A3161EUAThe function is HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS. Allegro MicroSystemsAllegro MicroSystems

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