Littelfuse offers innovative circuit protection solutions. Wherever one looks, Littelfuse is there. Streetlights, office buildings, cars, trucks, factories, computers, heating and cooling systems, electronic games, telecommunications equipment, even the satellites in the sky are protected by Littelfuse circuit protection products.
In April 2013, Littelfuse acquired Hamlin, Inc. Visit Hamlin’s site to view the entire range of Hamlin products available at Mouser.
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Littelfuse SE series GDT offers high surge ratings in a miniature
package. It’s designed for surface mounting on PCB with a small size
of 3.2x1.6x1.6mm. Low insertion loss is perfectly suited to broadband
equipment applications. The capacitance does not vary with voltage, and
will not cause operational problems with ADSL2+, where capacitance
variation across Tip and Ring is undesirable. These devices are
extremely robust and are able to divert a 500A-600A pulse in a miniature
package 1206 without destruction.
Littelfuse SM05 - SM36 TVS Diode Arrays are designed to protect
sensitive equipment from damage due to electrostatic discharge (ESD),
electrical fast transients (EFT), and lightning induced surges. The SM
series can absorb repetitive ESD strikes above the maximum level
specified in the IEC61000-4-2 international standard without performance
degradation and safely dissipate up to 24A of 8/20us induced surge
current (IEC-61000-4-5) with very low clamping voltages.
Littelfuse PLED Unidirectional Series (PLEDxUx Series) open LED protectors provide a switching electronic shunt path around a single LED that fails as an open circuit. This ensures the remaining string of LEDs will continue to function even though a single LED in the string has failed to open. It also provides reverse battery or reverse power polarity protection. PLED Unidirectional Series devices were designed to enable higher reliability in outdoor LED lighting applications such as street lighting, outdoor signage, aircraft runway lighting, roadside warning lights and other applications. Compatible with one, two and three watt LEDs that have a nominal 3V forward characteristic, PLED Unidirectional Series devices are available in two surface mount packages, the DO-214AA and the Quad Flat Pak No-lead (QFN). The QFN’s low profile, chip scale package (CSP) is ideal for dense board applications.
Littelfuse dual IGBT silicon modules are ideal for applications including motor drivers, inverters, converters, and induction heating. The MG06400D-BN1MM features high short circuit capability, ultra low loss, high ruggedness, and is positive temperature coefficient. The MG12300D-BN2/3MM & MG06400D-BN4MM feature high short circuit capability, self limiting short circuit current, low switching losses, fast switching and short tail current, and the IGBT3 CHIP with trench plus field stop technology.
Littelfuse SP3012 Series 0.5pF Diode Array for USB3.0 integrates
either 3, 4 or 6 channels of ultra low capacitance rail-to-rail diodes
and an additional zener diode to provide protection for electronic
equipment that may experience destructive electrostatic discharges
(ESD). These robust devices can safely absorb repetitive ESD strikes
above the maximum level specified in the IEC61000-4-2 international
standard (±8kV contact discharge) without performance degradation. The
extremely low loading capacitance also makes it ideal for protecting
high speed signal lines such as USB3.0, HDMI, USB2.0, and eSATA.
Littelfuse SP3006 Series SPA® TVS Diodes include ultra low capacitance back-to-back zener diodes to protect high-speed ports of electronic equipment that may experience destructive electrostatic discharges (ESD). The robust diode can safely absorb repetitive ESD strikes at the maximum level specified in the IEC 61000-4-2 international standard (Level 4, ±8kV contact discharge) without performance degradation. The very low loading capacitance of the Littelfuse SP3006 makes it ideal for protecting high-speed data lines such as USB2.0, USB3.0, HDMI, and IEEE 1394. This device is ideal for use in a variety of applications, including game consoles, LCD/PDP TVs, DVD players, desktop computers, digital cameras, and more.
Littelfuse SP402X TVS Diode Arrays integrate low capacitance steering diodes with one or two zener diodes to provide unidirectional or bidirectional protection against ESD and lightning induced surge events. The device can safely absorb 30A per IEC61000-4-5 (tp=8/20μs) without performance degradation and can withstand a minimum ±30kV ESD per IEC61000-4-2 international standard. The SP402X Series low capacitance of 2.5pF, low leakage current, and small SOD323 package make it ideal for protecting telecommunication ports such as Ethernet and other high speed data interfaces. Typical applications include 10/100/1000 Ethernet, T4/E1/T3/E3, USB 1.1/2.0, power ports, computers and peripherals, instrumentation, and medical equipment.
Littelfuse SDP Biased Series SIDACtor® Protection Thyristor is designed to offer
overvoltage protection for applications such as VDSL2, ADSL2, and ADSL2+
with minimal effect on data signals. Featuring an innovative silicon
design, the SDP Biased Series provides balanced overvoltage protection,
low distortion, low insertion loss, response time under 500ns, and a
capacitive loading characteristic compatible with high bandwidth
applications. The surface SOT23-6 package has a surge capability
that exceeds most worldwide standards and recommendations for lightning
surge withstand capability of tertiary protectors including ANSI C62.41,
IEC 61000-4-12, IEC 61000-4-5, 30 A, and IEC 61000-4-2 level 4.
Littelfuse 688 Series Fuse offers protection superior to that of circuit breakers, providing short-circuit and overload protection and ensuring long-term reliability for applications with high surge exposure levels. They also reduce the level of nuisance fuse tripping caused by indirect lightning surges. The 688 Series Fuse is optimized for protection of power distribution equipment used in wireless telecommunication base transceiver stations (BTS). It can also replace the air circuit breaker currently used for short-circuit protection in the surge protection box of 48V telecom power systems.
Littelfuse PLEDxSW Open LED Protectors offer a switching electronic shunt path when an LED in an LED string fails as an open circuit. PLEDxSW Open LED Protectors ensure the remaining string of LEDs continues to function even if a single LED does not. These devices automatically reset if the LED heals itself or the power is cycled. Designed using white materials for less visibility in the LED fixture, the devices feature white molding to reflect more light and improve overall light engine efficiency. Compatible with one, two and three watt LEDs that have a nominal 3V forward characteristic and PWM frequencies up to 30 kHz, PLEDxSW Series devices are available in SMB surface mount package. With a DO-214AA (SMB) low profile package, the PLEDxSW Open LED Protectors are ideal for dense board applications such as indoor lights, aircraft / runway lights, advertisement lighting, and other indoor LED lighting applications.
Littelfuse SRDA3.3 TVS Diode Array is designed to protect
telecommunications data lines against ESD and high surge events. This
device can safely absorb up to 35A of lightning induced surge current
(tp=8/20μs) without performance degradation and can withstand a minimum
of ±30kV ESD per the IEC61000-4-2 international standard. With just 8pF
of capacitance (typical) from each I/O to ground, this Littelfuse device
helps to maintain signal integrity, preventing data loss during
transmission. Typical applications for this Littlefuse TVS diode array
include tertiary (IC side) protection for telecommunication interfaces
such as T1/E1/T3/E3 data lines, HDSL/SDSL, RS-232/RS-485 interfaces,
10/100/1000 Ethernet interfaces, and video lines. This device is also
suitable for security cameras, storage DVRs, network equipment,
instrumentation, medical equipment applications.
Littelfuse SP3051 Series TVS Diode Array provides lightning protection by integrating low capacitance rail-to-rail diodes with an additional zener diode to protect each I/O pin against ESD and high surge events. The device can safely absorb 20A of current per IEC61000-4-5 (tP=8/20μs) without performance degradation and can withstand a minimum ±30kV ESD per IEC61000-4-2 international standard. The SP3051 Series TVS Diode Array is ideal for protecting high speed signal pins with its low capacitance of 3.8pF, low leakage current, and small SOT23-6 package. Typical applications include LCD/PDP TVs, monitors, notebooks, 10/100/1000 Ethernet, Firewire, set top boxes, flat panel displays, and portable medical devices.
Littelfuse 328 Series High Surge Withstanding Fuses are 300VAC-rated, 10kA surge withstanding, 6.3x32mm ceramic fuses. They are designed in accordance to UL248-14 Standard and are available in cartridge and axial-lead package options. These fuses are ideal for applications such as commercial and outdoor LED luminaries, and outdoor electronics and electric equipment.
Littelfuse offers a comprehensive line of fuses, fuseholders, and fuse
accessories for automotive, electronic, and industrial applications.
Littelfuse Kxxx1GL Multipulse™ SIDAC features increased high
voltage generation capacity and has a repetitive off-state blocking
voltage (VDRM) of 180V to 200V minimum depending on actual device type.
Littelfuse Kxxx1GL Multipulse™ SIDAC blocking capability is ensured by
glass passivated junctions for best reliability.
Littelfuse's K Series SIDACs are bidirectional voltage triggered
switches. Constructed with glass-passivated junctions, the K Series
SIDACs provide reliable performance even in harsh operating
environments. With an one-cycle surge current capability up to 20 A, K
Series SIDACs are ideal for dumping charged capacitors through an
inductor in order to generate high-voltage pulses.
View the entire K Series
Littelfuse TPSMA6L Transient Voltage Suppression (TVS) Diodes can provide secondary transient voltage protection from transients induced by load dump and other transient voltage events for sensitive electronics. Littelfuse TPSMA6L Transient Voltage Suppression (TVS) Diodes deliver high reliability application and are automotive grade AEC-Q101 qualified.This SMA device’s low profile DO-221AC package is less than 1.1 mm high, but it offers the same peak pulse power dissipation (PPPM) rating (600W) as standard SMB devices.
Littelfuse bidirectional SD05C and unidirectional SD05 TVS Diodes are designed to replace multilayer varistors (MLVs) in electronic equipment for low speed and DC applications. Littelfuse SDO5 and SD05C TVS Diodes will protect any sensitive equipment from damage due to electrostatic discharge (ESD) and other transient events. The SD05C can safely absorb repetitive ESD strikes at ±30kV (contact discharge, IEC 61000-4-2) without performance degradation and safely dissipate 30A of 8/20μs induced surge current (IEC61000-4-5) with very low clamping voltages.
Littelfuse SG Series Gas Discharge Tubes (GDT) offer high surge ratings in a miniature package. They are designed for surface mounting on PCB with a small size of 4.5x3.2x2.7mm. The GDTs' low insertion loss is perfectly suited to broadband equipment applications. Their capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. Littelfuse SG Series Gas Discharge Tubes are extremely robust and are able to divert a 1000A pulse without destruction.