Circuit Protection

<p>The Bel Fuse C1Q 750 is a surface mount fast-acting chip fuse designed for overcurrent protection in space-constrained electronic assemblies. Rated at 750 mA with a voltage rating of 125 VAC and 63 VDC, this fuse provides reliable protection with a breaking capacity of 100 A AC and 50 A DC. Its fast blow response ensures rapid disconnection during fault conditions, safeguarding sensitive downstream components.</p><p>&nbsp;</p><p>Housed in a compact 1206 (3216 metric) package, the C1Q 750 measures 3.20mm x 1.58mm x 0.58mm and features ceramic body construction with silver/nickel/tin terminations. It supports automated surface mount assembly and is compatible with lead-free reflow soldering processes up to 260°C. The nominal cold resistance is 0.175 Ω with a voltage drop of 0.163 V and power dissipation of 0.12 W at rated current.</p><p>&nbsp;</p><p>This fuse is qualified to AEC-Q automotive standards based on Bel's internal test plan and carries approvals from CE, CSA, and cULus. It meets RoHS3, REACH, lead-free, and halogen-free requirements, with MSL 1 unlimited floor life. The operating temperature range spans -55°C to 125°C.</p><p>&nbsp;</p><p>Typical applications include notebook computers, LCD monitors, power supplies, DC-DC converters, industrial equipment, medical equipment, and POE/POE+ systems. The C1Q 750 is supplied on tape and reel for high-volume pick-and-place assembly.</p>

<p>The STMicroelectronics BZW04-48B is a 400W transient voltage suppression (TVS) diode designed to protect sensitive electronics from overvoltage transients. It features a stand-off voltage of 47.8V and a maximum clamping voltage of 77V under a 10/1000µs waveform, with a peak pulse current rating of 5.2A. For faster 8/20µs surges, the clamping voltage is 100V and peak pulse current reaches 23A.</p><p>&nbsp;</p><p>This Zener-based TVS diode offers a fast response time and a low clamping factor, making it suitable for general-purpose overvoltage protection. The device is unidirectional with a single bidirectional channel and is not intended for power line protection. It operates over a junction temperature range of -65°C to 175°C and can dissipate up to 1.7W on an infinite heatsink at 75°C ambient.</p><p>&nbsp;</p><p>The BZW04-48B is housed in a DO-15 (DO-204AC) axial-lead through-hole package, suitable for manual or wave soldering with a maximum lead temperature of 230°C for 10 seconds. Typical capacitance is 320pF at 1MHz. The device is UL recognized.</p>

<p>The Littelfuse 0451004.MRL is a 4A, 125VAC/VDC fast-acting (fast blow) surface mount fuse from the 451/453 Series Nano2 SMF family. It is designed for secondary side over-current protection in a wide range of electronic applications.</p><p>&nbsp;</p><p>This fuse offers a breaking capacity of 50A at 125VAC/VDC and 300A at 32VDC. It features a very fast-acting response time and a melting I²t of 3.152 A²s. The operating temperature range is -55°C to 125°C.</p><p>&nbsp;</p><p>The component is housed in a compact 2-SMD, square end block package measuring 6.10mm x 2.69mm x 2.69mm, suitable for surface mount assembly. It is RoHS compliant and halogen free, with agency approvals from CSA, PSE, and UL.</p>

<p>The Littelfuse 0467005.NR is a 5A, 32V fast-acting surface mount fuse from the 467 series. It features a breaking capacity of 35A at 32V, nominal cold resistance of 0.0089Ω, voltage drop of 61.2mV, and power dissipation of 0.306W. The melting I²t is 0.9 A²s. Operating temperature ranges from -55°C to 90°C.</p><p>&nbsp;</p><p>This fuse is designed for secondary protection in space-constrained applications such as cell phones, battery packs, digital cameras, DVD players, and hard disk drives. It is compatible with lead-free soldering and higher temperature profiles.</p><p>&nbsp;</p><p>The 0603 (1608 Metric) surface mount package has a low profile of 0.31mm, making it suitable for height-sensitive designs. The flat top surface facilitates pick-and-place operations. The fuse is halogen-free, lead-free, and RoHS compliant, with UL and CSA approvals.</p>

<p>The ESDA17-5SC6 is a monolithic Transil array designed by STMicroelectronics to protect up to five lines against electrostatic discharge (ESD) transients. It integrates five unidirectional Transil functions in a single SOT23-6 package, making it ideal for high-density board designs where space is at a premium.</p><p>&nbsp;</p><p>Key electrical characteristics include a maximum stand-off voltage of 14 V, a minimum breakdown voltage of 17 V (at 1 mA), and a typical clamping voltage of 33 V at 15 A. The device offers a peak pulse power rating of 150 W for an 8/20 µs waveform and features extremely low leakage current of less than 75 nA at the stand-off voltage. It complies with IEC 61000-4-2 level 4, providing 15 kV air discharge and 8 kV contact discharge protection.</p><p>&nbsp;</p><p>The ESDA17-5SC6 is suitable for general-purpose ESD protection in applications such as computers, printers, communication systems, cellular phones, and consumer electronics. The surface-mount SOT23-6 package supports automated assembly and is RoHS3 compliant with MSL level 1.</p>

<p>The BZW06-5V8 is a unidirectional Zener TVS diode designed for general purpose transient voltage suppression. It features a reverse standoff voltage of 5.8V and a maximum clamping voltage of 13.4V at a peak pulse current of 298A (8/20µs waveform). The device can handle up to 600W of peak pulse power.</p><p>&nbsp;</p><p>This through-hole component is housed in a DO-204AC (DO-15) axial leaded package, making it suitable for board-level protection in a variety of electronic systems. The typical capacitance is 4000pF at 1MHz.</p><p>&nbsp;</p><p>Applications include general purpose circuit protection where a single unidirectional channel is required. The device is not intended for power line protection.</p>