Littelfuse, Inc. Datasheets for Circuit Protection Components

Circuit protection devices are used to protect electronic components from unwanted transients such as current and voltage surges, electrostatic discharge (ESD), lightning, spikes and other signals that can imperil the operation or damage the component.
Circuit Protection Components: Learn more

Product Name Notes
AXGD Series XTREME-GUARDTM Electrostatic Discharge Suppressor device is an auto grade polymer ESD protection device. It protects sensitive electronic devices against ESD - from 8kV up to extreme condition as...
Help improve output voltage clamping – even when input voltage is high and diode currents are large. Our PolySwitch devices are polymer-enhanced, precision Zener diode micro-assemblies. The advanced feature of...
Helping to reduce weight of wire harnesses. PPTC devices distributed in a circuit can allow the use of smaller wire sizes with the resulting harnesses. Forego looping back and forth...
Littelfuse 3425L Series PPTC provides surface mount overcurrent protection for high voltage applications where resettable protection is desired. Features: RoHS compliant and lead-free Halogen-free High voltage Low profile Fast response...
Littelfuse PolySwitch line-voltage-rated (LVR) devices help protect electric motors and transformers used in commercial and home appliances from damage caused by mechanical overloads, overheating, stall, lost neutral and other potentially...
Littelfuse Shock-Block LB100GFCI Lunchbox was designed specifically for power distribution in the entertainment industry. It features heavy duty construction with hospital grade duplex GFCI outlets, recessed circuit breakers and indicator...
Littelfuse Shock-Block provides UL 943 Class A GFCI protection to cast, crew and production equipment from electrical hazards. Wet conditions, moisture or just worn cable insulation can cause ground faults...
Our ESD devices offer many advantages over traditional protection devices, such as multi-layer varistors (MLVs), which may degrade or distort the signal in high data rate circuits. Compared to miniature...
Our PolySwitch® families of telecommunications and networking devices help meet the growing demand for resettable overcurrent protection. These product families help provide protection against damage caused by power cross and...
PULSE-GUARD® ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). \They use polymer composite materials to suppress fast- rising ESD transients (as specified in IEC 61000-4-2), while adding...
PulseGuard ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). They supplement the on-chip protection of integrated circuitry and are best suited for low voltage, high-speed applications where...
PulseGuard ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). They supplement the on-chip protection of integrated circuitry and are best suited for low-voltage, high-speed applications where low...
PulseGuard® ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). They supplement the on-chip protection of integrated circuitry and are best suited for low voltage, high-speed applications where...
SB5032-001-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) of 20 (fixed).
SB5032-011-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5032-021-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6 (fixed).
SB5032-201-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 20 (fixed).
SB5032-211-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5032-301-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 20 (fixed).
SB5032-311-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5060-001-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 20 (fixed).
SB5060-011-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5060-021-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6 (fixed).
SB5060-201-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 20 (fixed).
SB5060-211-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5060-301-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 20 (fixed).
SB5060-311-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5080-001-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 20 (fixed).
SB5080-011-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5080-021-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6 (fixed).
SB5080-201-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 20 (fixed).
SB5080-211-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5080-301-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 20 (fixed).
SB5080-311-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5100-001-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 20 (fixed).
SB5100-011-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5100-021-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6 (fixed).
SB5100-201-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 20 (fixed).
SB5100-211-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB5100-301-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 20 (fixed).
SB5100-311-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB6100-000-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 20 (fixed).
SB6100-001-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 20 (fixed).
SB6100-010-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB6100-011-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6, 10–100 in increments of 10 (selectable).
SB6100-020-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6 (fixed).
SB6100-021-0 is an Industrial Shock Block® with a supply voltage of 208 and trip level (mA) at 6 (fixed).
SB6100-100-0 is an Industrial Shock Block® with a supply voltage of 240 and trip level (mA) at 20 (fixed).
SB6100-101-0 is an Industrial Shock Block® with a supply voltage of 240 and trip level (mA) at 20 (fixed).
SB6100-110-0 is an Industrial Shock Block® with a supply voltage of 240 and trip level (mA) at 6, 10-100 in increments of 10 (selectable).
SB6100-111-0 is an Industrial Shock Block® with a supply voltage of 240 and trip level (mA) at 6, 10-100 in increments of 10 (selectable).
SB6100-200-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 20 (fixed).
SB6100-201-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 20 (fixed).
SB6100-210-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 6, 10-100 in increments of 10 (selectable).
SB6100-211-0 is an Industrial Shock Block® with a supply voltage of 480 and trip level (mA) at 6, 10-100 in increments of 10 (selectable).
SB6100-300-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 20 (fixed).
SB6100-301-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 20 (fixed).
SB6100-310-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 6, 10-100 in increments of 10 (selectable).
SB6100-311-0 is an Industrial Shock Block® with a supply voltage of 600 and trip level (mA) at 6, 10-100 in increments of 10 (selectable).
The 0402L Series PTC provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired.Features & Benefits: RoHS compliant, lead-free and halogen free...
The 0603L Series PTC provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired. Features: RoHS compliant, lead-free and halogen free Fast...
The 0805L Series PTC provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired. Features: RoHS compliant, lead-free, and halogen-free Fast response...
The 1210L Series PTC provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired. Features & Benefits: RoHS compliant, lead-free and halogen-free...
The 1812L series device provides surface mount overcurrent protection for applications where resettable protection is desired. Features & Benefits: RoHS compliant, lead-free and halogen-free Fast response to fault currents Compact...
The 2920L Series PTC provides surface mount overcurrent protection for medium voltage (≤60V) applications where resettable protection is desired. Features: RoHS compliant and lead-free Fast response to fault currents High...
The Automotive High Temperature SMD is the first miniature-sized High Temperature PPTC series from Littelfuse with AEC-Q200 qualification for Automotive Applications and it provides surface mount overcurrent protection for applications...
The integrated load switching of the LS0504EVT233 provides robust, input over-current protection to the downstream circuit systems. The device comes with built-in over-voltage protection and internal soft start. The switch’s...
The LQ05021QCS4 is an ultra-efficiency, 2.0 A rated, load switch with integrated slew rate control. The best in class efficiency makes it an ideal choice for use in IoT, mobile,...
The LQ05021RCS4 is an advanced technology fully integrated load switch device with true reverse current blocking (TRCB) technology and the slew rate control of the output voltage. It offers industry...
The LQ05022QCS4 is an ultra-efficiency, 2 A rated, load switch with integrated slew rate control. The best in class efficiency makes it an ideal chose for use in IoT, mobile,...
The LQ05041QCS6 is an ultra-efficiency, 4 A rated, integrated load switch with integrated slew rate control. The LQ05041QCS6 features an ultra-efficient technology that supports the lowest RON, quiescent current (IQ)...
The LQ05041RCS6 is an advanced technology fully integrated high efficiency load switch device with True Reverse Current Blocking (TRCB) technology and the slew rate control of the output voltage. The...
The LS0504EDD12 is a compact, low RON load switch withcontrolled slew rate. The device operates over an input voltagerange of 1.8V to 5.5V and can support maximum continuouscurrent of 4A.
The LS0505EVD22 integrated load switch provides a robust input over-current protection to downstream circuit systems. The device comes with built-in over-voltage protection, internal soft-start. The switch’s low RDS(ON) minimizes power...
The LS12052BD33 family of integrated load switches provides an easy circuit protection to power the system. The device uses few external components and provides multiple protection modes. They are a...
The LS1205E integrated load switch provides an easy circuit protection to power the system. The devices use few external components and provide multiple protection modes. They are a robust defense...
The LS2405IDD23 emulates a 5A very low forward voltage diode that is used in high current diode and diode-OR applications. The LS2405IDD23 integrates a 35mohm N-Channel MOSFET to obtain higher...
The LS24062RQ23 is an advanced 28V 6A rated bidirectional load switch which provides overload, short circuit, input voltage surge, excessive inrush current and over-temperature protections to power the system. The...
The LS2406ERQ23 is an advanced 28V 6A rated current limit switch which provides overload, short circuit, input voltage surge, excessive inrush current, over-temperature and reverse current protections to the system.
The PGB20402 is an ESD suppressor device. It has advantages of low trigger voltage and low clamp voltage.Along with a more important feature, very low capacitance ensures the ESD sensitive...
XGD Series XTREME-GUARDTM ESD Suppressors protect sensitive electronic equipment against extreme ESD conditions. This series product is specifically designed to suppress fast-rising ESD transients up to 30kV while adding virtually...