PRODUCT CATALOG & DESIGN GUIDE Proximity | Level | Speed | Flow

Expertise Applied | Answers Delivered About This Guide This guide provides an introduction to magnetic sensing and options for value-added custom design packages. It also offers practical suggestions for selecting reed switches, reed sensors and Hall effect sensors for a variety of applications. © 2017 Littelfuse, Inc. • Specifications are subject to change without notice

WHY CHOOSE LITTELFUSE Founded in 1927, Littelfuse has become the world’s most respected circuit protection brand with well-established and growing platforms in power control and sensing technologies. Today, we are a global company, offering the industry’s most diverse and extensive product portfolio—fuses, semiconductors, polymers, ceramics, relays, sensors and more—serving the electronics, automotive and industrial markets. Each is manufactured to exacting quality standards and backed by an unwavering commitment to technical support and customer service. 59135 (High-Temperature Flange Mount...

M Littelfuse' Expertise Applied | Answers Delivered INTRODUCTION TO MAGNETIC SENSING REED SWITCHES A reed switch has two ferromagnetic blades (reeds) contained within a tubular glass envelope that is hermetically sealed at each end. The contacts on each reed blade have a thin layer of precious metal material deposited on them. There is usually nitrogen gas on the inside of the glass envelope to eliminate the preslncelof oxygen and ensmre tsat the contacts will not oxidize. Reed switches are activated by a permanent magnet or an electromagnet. The reed switch and magnetic field combination is...

CUSTOMIZABLE OPTIONS TYPES OF CUSTOMIZATION Modifications are available to existing standard product packages, such as adding connectors or changing wire size or length, as well as offering special reed switch sensitivities, custom lead forming and bending or modifications to bare reed switches. Fully new custom sensor package designs and/or circuitry Magnetic circuit (actuator magnet and sensor) design for a variety of applications See our full range of sensor manufacturing process capabilities ENGINEERING SERVICES OFFERED: 3D CAD mechanical design services Electronic circuitry design Magnetic...

Expertise Applied | Answers Delivered MDSM-10 Body Length Lead-Lead Length Power Size Terminals Switch Type Package Product Series (mm)/[Inch] (mm)/[Inch] Notes: For details on electrical specifications, visit littelfuse.com A:SPST-NO - Single Pole Single Throw - Normally Open C:SPDT-CO - Single Pole Double Throw - Change Over All reed switches are RoHS compliant Certification: Contact Littelfuse for certified ratings **Breakdown Voltage - per MIL-STD-202, Method 301 f20 W for 100-265 VAC loads, 10 W for all other loads © 2017 Littelfuse, Inc. • Specifications are subject to change without notice...

REED SWITCHES Littelfuse* Expertise Applied | Answers Delivered ation* Switching Power (W) Lead Modifications Littelfuse can cut and/or form the reed switch leads to meet your dimensional requirements. Most lead modifications can be done by Littelfuse without any additional tooling costs. Applications Assistance and Custom Switch Modification Littelfuse offers complete application engineering assistance in selecting the correct switch, sensitivity, and configuration. Switch life is affected by electrical load and other operating conditions. Littelfuse offers load/life information per customer...

Expertise Applied | Answers Delivered Sensors, Reed Relays and Magnetic Actuators Our sensor technologies are ideally suited for various sensing applications, including proximity, level, speed and flow, as shown in the table. Customizations, including various connectors and wire lengths, are available for all our standard products. For more detailed product specifications and all available options, refer to the individual product datasheets. Littelfuse.com 7 © 2017 Littelfuse, Inc. • Specifications are

HALL EFFECT SENSORS Littelfuse* Expertise Applied | Answers Delivered FLAT PACK This sensor's rectangular package is ideally suited for mounting on a flat surface. It is designed for use in a wide range of environments. Product Series 55075 Stainless Steel M12 Geartooth Hall M12 x 1 Pitch x 46.00 (1.811) 4.75 to 25.2 N/A Digital Vdd - 2 0.6 V @ 20 mA -40 to +85 -65 to +85 © 2017 Littelfuse, Inc. • Specifications are subject to change without notice

Expertise Applied | Answers Delivered This sensor offers a slim, cylindrical package that is suitable for mounting on a frame. Mating Actuator Contact Switching Breakdown Rating Voltage Voltage Product Series Overall Dimensions mm (inch) 0 x L Contact Resistance, Initial Ohms Max. © 2017 Littelfuse, Inc. • Specifications are subject to change without notice

REED SENSORS Littelfuse* Expertise Applied | Answers Delivered THREADED BARREL Designed with a cylindrical package, this sensor is available with English and metric threads. It may easily be mounted and adjusted using the supplied retaining nuts. © 2017 Littelfuse, Inc. • Specifications are subject to change without notice

Expertise Applied | Answers Delivered DUAL-IN-LINE (DIL) Reed relay products are available in standard dual-in-line packages for mounting on a printed circuit board or socket. © 2017 Littelfuse, Inc. • Specifications are subject to change without notice

MAGNETIC ACTUATORS Littelfuse* Expertise Applied | Answers Delivered RECTANGULAR These rectangular bare magnets and packaged actuators are ideally suited for mounting on a flat surface.They are suitable for use in a wide range of environments, including high-temperature applications. Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics....