Polymeric PTC Resettable Fuse 6V 2 A Ih Surface Mount 1206 (3216 Metric), Concave NANOSMDC200F-2 – Surface-mount polymeric PPTC resettable fuse with a 2 A hold current rating. Designed for overcurrent protection in electronic circuits, it safely interrupts excessive current and automatically resets once normal conditions resume. Ideal for USB ports, battery-powered devices, embedded systems, and general consumer electronics, providing reliable, compact, and maintenance-free protection. #PPTCFuse #SMDProtection #ResettableFuse #OvercurrentProtection #2AHold #CircuitSafety #ElectronicsDesign

2A 250V Fuse Board Mount (Cartridge Style Excluded) Through Hole Radial, Box 39212000440 is a 2 A, 250 VAC TE5 time-lag (slow-blow) radial through-hole fuse from Littelfuse. It is designed to provide reliable overcurrent protection for electronic circuits by tolerating temporary inrush currents while disconnecting the circuit during sustained overloads or short circuits. Its compact TE5 package, low internal resistance, and international safety approvals make it suitable for power supplies, battery chargers, industrial controllers, and consumer electronic equipment. Key Features Rated current: 2 A Rated voltage: 250 VAC Time-lag (Slow-Blow) characteristic for handling inrush currents TE5 radial through-hole package for PCB mounting Low internal resistance for efficient operation Shock-resistant and vibration-resistant construction Halogen-free, lead-free, and RoHS compliant Certified to IEC 60127-3 and approved by multiple international safety agencies Ideal for power supplies, battery chargers, industrial control systems, and consumer electronics #Littelfuse #Fuse #SlowBlowFuse #TimeLagFuse #TE5Fuse #CircuitProtection #OvercurrentProtection #ThroughHole #PowerSupply #IndustrialElectronics #ConsumerElectronics #BatteryCharger

Resettable PTC Fuse – 3 A polymeric positive temperature coefficient (PPTC) resettable fuse for overcurrent and short-circuit protection in power supplies, automotive electronics, USB power lines, battery-powered devices, industrial equipment, and embedded systems. Features a 15 V maximum operating voltage, 3 A hold current, 5.2 A trip current, and 100 A maximum fault current. Provides 10 mΩ minimum initial resistance, 48 mΩ maximum post-trip resistance, and a 20 s maximum trip time under specified fault conditions. Designed in a 2920 (7351 Metric) surface-mount package, qualified to AEC-Q200, cURus, and TÜV standards, and specified for operation over a −40°C to +85°C temperature range. #BelFuse #0ZCF0300AF2C #ResettableFuse #PTCFuse #PPTCFuse #PolymericPTC #OvercurrentProtection #CircuitProtection #3A #2920 #AECQ200 #SurfaceMount #EmbeddedSystems

OR Controller N+1 ORing Controller N-Channel 1:1 24-VQFN (4x4) The LM74930-Q1 ideal diode controller drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier and power path ON and OFF control with over current and overvoltage protection. The wide input supply of 4 V to 65 V allows protection and control of 12-V and 24-V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65 V. An integrated high side gate control (HGATE) drives the first MOSFET in the power path. The device allows load disconnect (ON and OFF control) in case of overcurrent, overvoltage and undervoltage event using HGATE control while ideal diode controller (DGATE) drives a second MOSFET to replace a Schottky diode for input reverse polarity protection and output voltage holdup by blocking the reverse current from output to input. The device has integrated current sense amplifier which provides with an adjustable overcurrent and short circuit protection with circuit breaker functionality. The device features an adjustable overvoltage and undervoltage protection feature to protect against supply transients. LM74930-Q1 features MODE pin which can be used to selectively enable or disable reverse current blocking functionality. Features • AEC-Q100 qualified for automotive applications – Device temperature grade 1: –40°C to +125°C ambient operating temperature range • 4-V to 65-V input range • Reverse input protection down to –65 V • Drives external back-to-back N-Channel MOSFETs in common source configuration • Ideal diode operation with 10.5-mV A to C forward voltage drop regulation • Low reverse detection threshold (–10.5 mV) with fast DGATE turn-off response (0.5 µs) • 18-mA peak gate (DGATE) turn on current • 2.6-A peak DGATE turn-off current • Adjustable overcurrent and short circuit protection • Analog current monitor output with 10% accuracy (IMON) • Adjustable overvoltage and undervoltage protection • Low 2.5-μA shutdown current (EN=Low) • MODE pin to allow bi-directional current flow (MODE=Low) • Meets automotive ISO7637 transient requirements with a suitable TVS diode • Available in space saving 24-pin VQFN package 2 Applications • 12-V / 24-V automotive reverse battery protection • Industrial transport • Redundant power supply ORing #IdealDiodeController #SurgeStopper #CircuitBreaker #PowerPathProtection #AutomotiveElectronics #AECQ100 #ReversePolarityProtection #OvercurrentProtection #TexasInstruments #PMIC

Fast-Acting Surface-Mount Fuse – 15 A fast-acting surface-mount fuse for overcurrent protection in power supplies, DC-DC converters, automotive electronics, industrial equipment, battery-powered devices, and embedded systems. Features a 32 VDC voltage rating, 15 A current rating, and a 300 A interrupt rating at rated voltage, providing rapid protection against overloads and short circuits. Part of the Littelfuse NANO²® 451 Series, it offers low cold resistance (5.1 mΩ typical), 97.8 A²s melting I²t, fast-blow response, and is AEC-Q200 qualified for automotive applications. Designed in a compact 1206 (3216 Metric) surface-mount package, it operates over a −55°C to +125°C temperature range and carries UL and CSA safety approvals. #Littelfuse #0451015MRL #NANO2451 #SurfaceMountFuse #FastActingFuse #CircuitProtection #OvercurrentProtection #SMDFuse #AECQ200 #PowerManagement #1206 #EmbeddedSystems

Polymeric PTC Resettable Fuse – Surface-mount resettable overcurrent protection device with a 9 V maximum operating voltage, 200 mA hold current (Ih), 500 mA trip current (It), and 100 A maximum fault current. Features 400 mΩ minimum initial resistance, 3.5 Ω maximum post-trip resistance, 20 ms typical time-to-trip, and operates over a −40°C to +85°C temperature range. Housed in an 0805 (2012 Metric) concave surface-mount package. #BelFuse #0ZCK0020FF2G #PTCResettableFuse #PolymericPTC #ResettableFuse #OvercurrentProtection #CircuitProtection #SurfaceMount #0805 #PassiveComponents #EmbeddedSystems

Polymeric PTC Resettable Fuse 16V 3 A Ih Through Hole Radial, Disc # Engineering Specification ## Product Name RGEF300 ## General Description RGEF300 is a resettable polymeric positive temperature coefficient protection device designed to safeguard electronic circuits against overcurrent and fault conditions. The component is intended for use in power distribution systems, low-voltage DC rails, and electronic assemblies where temporary overload protection and automatic recovery are required. The device operates by increasing its internal resistance when subjected to excessive current or elevated temperature conditions, thereby limiting fault current and protecting downstream circuitry. Once the fault condition is removed and the device cools, it returns to a low-resistance state, allowing normal operation to resume without the need for manual replacement. RGEF300 is widely used in industrial electronics, consumer devices, automotive subsystems, communication equipment, and embedded systems where reliable overcurrent protection and system uptime are critical. Its radial-leaded configuration supports straightforward integration into through-hole PCB designs and legacy circuit architectures. The design emphasizes consistent trip behavior, stable reset characteristics, and long-term reliability under repeated fault conditions. It is suitable for applications requiring self-resetting protection elements that reduce maintenance requirements and improve system resilience. ## Functional Requirements ### Overcurrent Protection The device shall limit current flow during fault conditions by increasing resistance when exposed to excessive current. ### Automatic Reset The device shall return to a low-resistance state once normal operating conditions are restored and thermal conditions stabilize. ### Fault Isolation The device shall provide temporary isolation of downstream circuitry during overcurrent events. ### System Protection Support The component shall support use in electronic systems requiring reusable protection elements for power input and distribution paths. ## Electrical Requirements ### Normal Operation The device shall maintain low resistance under normal operating current conditions to minimize power loss. ### Trip Behavior The device shall transition to a high-resistance state when subjected to fault-level current conditions. ### Thermal Response The device shall respond to both electrical current and self-heating effects to initiate protective action. ### Recovery Characteristics The device shall restore normal conduction after fault clearance and thermal recovery. ## Mechanical Requirements ### Radial Leaded Construction The device shall be provided in a through-hole radial package suitable for PCB mounting. ### Structural Integrity The component shall maintain mechanical stability during soldering, handling, and operational thermal cycling. ### Board Integration The device shall be compatible with standard PCB layouts used in power protection circuits. ## Environmental Requirements ### Operating Conditions The device shall operate reliably in industrial, consumer, and embedded electronic environments. ### Thermal Performance The device shall tolerate repeated heating and cooling cycles associated with fault events. ### Storage and Handling The component shall maintain electrical and mechanical integrity during storage and transportation. ## Quality Requirements ### Reliability The device shall support repeated fault recovery cycles without permanent degradation under specified operating conditions. ### Verification Electrical trip behavior, resistance recovery, and thermal response shall be validated through standard qualification testing. ### Compliance The product shall conform to applicable safety and electronic component standards for resettable overcurrent protection devices. ## Documentation Requirements Technical documentation shall include application guidelines, derating considerations, PCB layout recommendations, fault behavior characteristics, and integration practices for circuit protection design. ## Classification Tags #RGEF300 #PTCResettableFuse #Polyfuse #PPTC #OvercurrentProtection #CircuitProtection #ResettableFuse #PowerProtection #FaultProtection #ThermalProtection #ElectronicComponents #ElectricalEngineering #PCBDesign #PowerDistribution #IndustrialElectronics #AutomotiveElectronics #EmbeddedSystems #CommonPartsLibrary #ComponentLibrary #EngineeringSpecification #ReliabilityEngineering #SelfResettingProtection

The 24F 5A250V is a panel-mount cartridge fuse holder designed to securely accommodate and electrically connect cartridge fuses in power distribution and protection circuits. It provides a reliable interface between the fuse element and the electrical system, enabling easy fuse replacement while maintaining electrical safety and mechanical stability. Commonly used in industrial equipment, consumer electronics, power supplies, appliances, instrumentation, and control systems, the fuse holder supports circuit protection against overload and fault conditions while ensuring convenient maintenance and serviceability. Engineering Specification Device Type Panel-Mount Cartridge Fuse Holder Fuse Compatibility Cartridge Fuse Installation and Retention Current Rating Suitable for Low-Voltage Power Protection Applications Voltage Rating Compatible with AC Power Distribution Circuits Mounting Style Panel Mount Connection Method Solder Terminal or Wire Connection Interface Contact Material Conductive Metal Contacts with Corrosion Resistance Housing Material Insulating High-Temperature Polymer Construction Mechanical Characteristics Secure Fuse Retention Easy Fuse Replacement Stable Mechanical Assembly Durable Construction Safety Characteristics Electrical Isolation Support Reliable Contact Performance Overcurrent Protection Interface Safe Fuse Accessibility Environmental Characteristics Long Service Life Resistance to Mechanical Wear Suitable for Commercial and Industrial Environments Applications Power Supplies Industrial Control Equipment Consumer Electronics Electrical Appliances Instrumentation Systems Battery Chargers Test Equipment Automation Systems Distribution Panels Embedded Electronic Devices Features Compact Panel-Mount Design Reliable Electrical Contact Easy Maintenance Access High Mechanical Durability Secure Fuse Retention Mechanism Simple Installation Wide Application Compatibility RoHS Compliant Construction Component Category Fuse Holder #commonpartslibrary #passivecomponents #fuseholder #circuitprotection #overcurrentprotection #powerelectronics #powersupply #industrialelectronics #electricalsafety #panelmount #electroniccomponents #powermanagement #protectioncircuit #controlsystems #applianceelectronics

Polymeric PTC Resettable Fuse 6V 2 A Ih Surface Mount 1206 (3216 Metric), Concave Resettable PPTC Fuse provides overcurrent protection by increasing resistance during fault conditions and automatically resetting after the fault is removed. This surface-mount 1206 polymeric PTC fuse is rated for 6 V maximum, 2.0 A hold current, and 3.5 A trip current, with an operating temperature range of −40°C to +85°C. #ResettableFuse #PPTC #PolymericPTC #OvercurrentProtection #CircuitProtection #Littelfuse #1206 #SMD #2A #6V

BQ29209DRBR – Integrated 2-cell Li-ion/Li-polymer battery protection and management IC. Provides overvoltage, undervoltage, and overcurrent protection for each cell while incorporating automatic cell balancing to maintain uniform charge levels. Designed for compact 2S battery pack applications, it ensures safe and reliable operation in portable electronics, battery-powered devices, and custom BMS circuits. Ideal for extending battery life, preventing overcharge or deep discharge, and supporting high-efficiency energy management. #2SLiIonBMS #BatteryProtectionIC #CellBalancing #OvervoltageProtection #UndervoltageProtection #OvercurrentProtection #PortableElectronics #BMSDesign