WHITE PAPER - Littelfuse
Overcurrent protective devices must disconnect circuits and equipment experiencing continuous or sustained overloads before overheating occurs. Even moderate insulation overheating can seriously reduce the life of the components and/or equipment involved. For example in the case of motors, a single motor overloaded by just 15% may
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MOTOR PROTECTION TABLES - Circuit Protection, …
m.littelfuse.com2014 l por-ar ® p 2 motor protection guide motor protection tables motor s.f. = 1.15 or hp full load amps without overload relays with overload relays switch or s.f. = less
WHITE PAPER - Littelfuse
m.littelfuse.comTRANSFORMER PROTECTION WHITE PAPER The Importance of Effective Transformer and Control Transformer Protection
Application : Transient oltage uppressors (TVS iode ...
m.littelfuse.come: Transient oltage upressors (T iode pplications verview Litteluseco 2 © 2015 Littelfuse, Inc. Device Type Vulnerability (volts) VMOS 30-1800 MOSFET 100-200 GaAsFET ...
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m.littelfuse.com© 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17 Metal-Oxide Varistors (MOVs) Radial Lead Varistors …
Light-Emitting Diode (LED) Design Guide - Littelfuse
m.littelfuse.comLight-Emitting Diode (LED) Design Guide Table of Contents Page Introduction 3-4 Safety and Reliability of LED Bulbs 5-7 Surge Immunity Requirements for Consumer LED Lighting/ Retrofit Lamps 8-10 Part Selection Matrix for LED Lamp Protection 11 ... duration of the test …
Light-Emitting Diode (LED) Design Guide
m.littelfuse.comConstant Current LED String Driver LEDs Iso / Step Down Osc. A fuse with adequate I2T rating is necessary to pass Energy Star ring-wave tests according to IEEE C.62.41 A metal oxide varistor (MOV) can help protect the LED bulb from overvoltage surges …
Selection Guide Fuse Characteristics, Terms and ...
m.littelfuse.comTypical PTC Circuit Protection Designs 11 Standards 12–14 PTC Selection Worksheet 15 Fuse and PTC Products Selection Guide 16–18 Packaging and Part Numbering 19 Legal Disclaimers 20 About this guide Fuses are current-sensitive devices that provide reliable protection for discrete components or circuits by melting under current overload ...
Automotive Circuit Protection using Littelfuse Automotive ...
m.littelfuse.com1.0 Mbits/s @ 40 meters 125 kbits/s @ 500 meters Cable Twisted or parallel pair wires, shielded or unshielded cable Termination Resistance 120 W resistors located at each end of the bus Min/Max Bus Voltage 12 V System: –3.0/+16 V
SM712 Series 600W Asymmetrical TVS Diode Array RoHS …
m.littelfuse.comlead-free • ESD, IEC 61000-4-2, ±30kV contact, ±30kV air ... • Communication Equipments Pinout and Functional Block Diagram Life Support Note: ... Capacitance vs. Reverse Bias 0 10 20 30 40 50 60 70 02468 10 12 80 Bias Voltage (V) Capacitance (pF) Clamping Voltage vs. I PP 0 5 10 15 20 25 30 35
MOTOR PROTECTION TABLES - Littelfuse
m.littelfuse.comampere rating motor running protection (used without properly sized overload relays) motor full-load amps back-up motor running protection (used with properly sized overload relays) motor full-load amps motor service factor of 1.15 or greater or with temp. rise not over 40°c. motor service factor less than 1.15 or
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