Product Descriptions

The SS400 Series and SS500 Series are small and 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, or to a South pole only. They are available in 

bipolar, latching or unipolar magnetics. On-board regulation provides stable operation over a 3.8 Vdc to 30 Vdc supply voltage range. These 

sensors are capable of continuous 20 mA sinking output and may be cycled as high as 50 mA max.

The 3.8 V capability allows for use in many potential low voltage applications. The digital, open collector sinking-type output is easily interfaced 

with a wide variety of electronic circuits. To provide reliable products and consistent quality, the SS400 Series products are tested at both 25°C 

[75°F] and 125°C [257°F]. All catalog listings are qualified for operation up to 150°C [302°F]. For design flexibility, these product are available in 

the following package styles:

• SS400 Series: Flat TO-92-style:

- SS4XX: Straight standard leads, bulk pack

- SS4XX-L: Straight long leads, bulk pack

- SS4XX-T2: Formed leads, ammopack tape-in-box

- SS4XX-T3: Straight standard leads, ammopack tape-in-box

- SS4XX-S: Surface mount, bulk pack

- SS4XX-SP: Surface mount, pocket tape and reel

• SS500 Series: SOT-89B, pocket tape and reel

Product Features

• Quad Hall IC design minimizes mechanical stress effects

• Temperature-compensated magnetics help provide stable operation over a wide temperature range of -40°C to 150°C [-40°F to 302°F]

• Broad, inclusive supply voltage capability from 3.8 Vdc to 30 Vdc for application flexibility

• Digital, open collector sinking output for easy interfacing with a variety of common electronic circuits

• High sensitivity versions available for potential applications requiring high accuracy or wide gaps

• Bipolar, latching or unipolar magnetics

Product Applications

• Industrial: Speed and RPM (revolutions per minute) sensing, tachometer, counter pickup, flow-rate sensing, brushless dc (direct current) motor 

commutation, motor and fan control, robotics control

• Transportation: Speed and RPM (revolutions per minute) sensing, tachometer, counter pickup, motor and fan control, electric window lift, convertible roof position

• Medical: Motor assemblies, medication dispensing control

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