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 NTC5D-15 is a negative temperature coefficient thermistor designed for inrush current limiting and surge current suppression in power electronic circuits. It provides high resistance at ambient temperature to restrict excessive startup current and gradually decreases in resistance as it self-heats during operation, allowing normal current flow with minimal power loss. This component is commonly used in switched-mode power supplies, battery chargers, motor drives, lighting equipment, consumer electronics, industrial control systems, and other AC or DC power applications requiring reliable inrush current protection. Key Features Negative temperature coefficient thermistor technology Designed for inrush current limiting applications High surge current handling capability Low resistance during normal operating conditions Fast thermal response characteristics Stable electrical performance over repeated power cycles High reliability and long operational life Radial leaded through-hole package Suitable for AC and DC power systems Helps protect power supplies, rectifiers, capacitors, and switching devices from excessive startup current Electrical Characteristics NTC thermistor element Inrush current limiter function Low steady-state resistance after self-heating High energy absorption capability Wide operating temperature range Stable resistance-temperature behavior Suitable for continuous current operation within specified ratings Applications Switched-mode power supplies AC-DC converters Battery charging systems LED drivers and lighting equipment Industrial automation systems Motor control circuits Consumer electronics Home appliances Telecommunications equipment Power distribution modules Mechanical Characteristics Radial lead configuration Through-hole mounting Epoxy-coated thermistor body Compact package size for PCB installation RoHS-compliant construction depending on manufacturer version #commonpartslibrary #passivecomponent #thermistor #ntc #inrushcurrentlimiter #surgeprotection #powermanagement #powersupply #circuitprotection #industrialelectronics #powerelectronics #electroniccomponent

SN74HCT245 / SN54HCT245 – octal bus transceiver with 3-state outputs designed for bidirectional data communication between two 8-bit buses. Features direction control (DIR) for selecting data flow direction and output enable (OE) for bus isolation. TTL-compatible inputs, low power consumption, and high-current outputs make it suitable for interfacing microcontrollers, memory devices, processors, FPGAs, LCD modules, industrial controllers, and digital communication systems. Operates from a 4.5 V to 5.5 V supply voltage and supports asynchronous data transfer. Search Keywords: SN74HCT245, SN54HCT245, HCT245, Octal Bus Transceiver, Bidirectional Bus Transceiver, 8 Bit Bus Buffer, 3 State Buffer, Tri State Buffer, TTL Compatible Logic IC, Data Bus Interface, Logic Level Buffer, Microcontroller Interface, Memory Bus Driver, Digital Logic IC, Bus Isolation IC, Direction Controlled Buffer, Parallel Data Interface, Industrial Control Logic, FPGA Interface, Processor Bus Transceiver Hashtags: #SN74HCT245 #SN54HCT245 #HCT245 #BusTransceiver #OctalBusTransceiver #TriStateBuffer #LogicIC #TTLCompatible #DigitalLogic #BusBuffer #MicrocontrollerInterface #FPGA #EmbeddedSystems #MemoryInterface #IndustrialElectronics #DataBus #ElectronicsDesign #PCBDesign #HardwareDesign #TexasInstruments

The 10D-9 is an NTC (Negative Temperature Coefficient) thermistor primarily used as an inrush current limiter in power supply circuits. It has a nominal resistance of 10 Ω at 25°C and a disk diameter of approximately 9 mm. When power is first applied, the thermistor's high resistance limits the surge current. As it heats up during normal operation, its resistance decreases significantly, allowing current to flow with minimal power loss. Key Features 10 Ω nominal resistance at 25°C. NTC characteristic – resistance decreases as temperature increases. Inrush current suppression for protecting power supplies and electronic equipment from startup current spikes. Low residual resistance after warm-up, minimizing power loss during normal operation. High reliability and long-term stability. Radial leaded package with epoxy/silicone-coated thermistor disk. Typical operating temperature range up to -40°C to +175°C (manufacturer-dependent). Typical Applications Switching Mode Power Supplies (SMPS) AC/DC adapters Battery chargers LED drivers UPS systems Motor drives and controllers Monitors, TVs, and PC power supplies Electronic ballasts and lighting equipment #CommonPartsLibrary #Thermistor

Multiplexer/Demultiplexer 16 x 1:2 56-SSOP The SN74CBT16390 is a 16-bit to 32-bit switch used in applications in which two separate data paths must be multiplexed onto, or demultiplexed from, a single path. This device can be used for memory interleaving, in which two different banks of memory must be addressed simultaneously. This device also can be used to connect or isolate the PCI bus to one or two slots simultaneously. Two output enables (OE1 and OE2) control the data flow. When OE1 is low, A port is connected to 1B port. When OE2 is low, A port is connected to 2B port. When both OE1 and OE2 are low, the A port is connected to both 1B and 2B ports. The control inputs can be driven with a 5-V CMOS, 5-V TTL, or an LVTTL driver. Key Features 16-bit to 32-bit FET multiplexer/demultiplexer bus switch Operates from 4.5 V to 5.5 V Low ON-state resistance for high-speed signal switching Near-zero propagation delay through the switch Dual output-enable (OE1, OE2) controls for flexible routing TTL-compatible control inputs Supports memory interleaving and PCI bus applications Low power consumption ESD protection compliant with JESD22 standards Operating temperature range: −40°C to +85°C Available in a 56-pin SSOP (DL) package #BusSwitch #Multiplexer #Demultiplexer #Widebus #DigitalLogic #HighSpeedInterface #MemoryInterleaving #PCIBus #TexasInstruments #SN74CBT16390 #SSOP56

Flow Sensors 26PCFFG6G SENSOR-TH_26PCFFG6G LCSC Part Number: C408310 JLCPCB Part Class: Extended Part Manufactured by Honeywell(霍尼韦尔)

- Converter, Battery Powered Devices Voltage Regulator IC 1 Output 30-FC2QFN (4x4) The MAX77960EFV06+ is a fully integrated switching charger and power management IC that supports both step-up (boost) and step-down (buck) operation, making it suitable for USB-C PD applications where input voltage can be higher or lower than the battery voltage. It includes an internal Smart Power Selector™, which intelligently manages power flow between the input source, battery, and system load, enabling smooth system startup even with deeply discharged batteries. This device is widely used in portable electronics, battery-powered systems, drones, cameras, and USB-C PD devices requiring high power efficiency and compact design. Key Features Power & Electrical Specs Input voltage range: 3.5 V to 25.4 V High-efficiency buck-boost operation (up to ~97% peak efficiency) Programmable charging current: 100 mA to 3.15 A (MAX77960 version) Supports 2-cell and 3-cell Li-ion battery charging #CommonPartsLibrary #IntegratedCircuit #PowerManagement

Flow Sensors CBM-DC2 QFN-32_L5.0-W5.0-P0.50-BL-EP3.4 LCSC Part Number: C476312 JLCPCB Part Class: Extended Part Manufactured by Corebai(芯佰微)

USB to Serial Interface, SSOP-28 FTDI USB Serial SSOP*5.3x10.2mm*P0.65mm* The FT232RL is a full-speed USB 2.0 to asynchronous serial data transfer IC. It integrates all the necessary USB protocol handling and UART interface logic, making it very easy to add USB connectivity to embedded devices without requiring complex firmware development. It is commonly used in development boards (like Arduino clones), USB-to-TTL converters, and debugging interfaces. Key Features USB Interface Fully compliant with USB 2.0 Full-Speed (12 Mbps) Integrated USB transceiver (no external components required) Supports USB suspend/resume modes Internal EEPROM for storing USB descriptors (no external EEPROM needed) Serial (UART) Interface Supports standard UART communication (TX, RX) Configurable baud rates from 300 bps up to 3 Mbps Supports hardware flow control (RTS/CTS, DTR/DSR) Bit-bang mode for simple GPIO control Integrated Components Built-in clock generator (no external crystal required) Internal EEPROM for configuration Integrated voltage regulator (3.3V output available for external use) Power Features Operates from 3.3V to 5V Can be powered directly from USB (bus-powered) Low power consumption with sleep mode Driver Support Virtual COM Port (VCP) drivers available for: Windows Linux macOS Also supports direct D2XX driver for advanced applications Package Typically available in SSOP-28 package Common Applications USB-to-serial converters (TTL/RS232) Microcontroller programming and debugging Embedded system communication Industrial and instrumentation interfaces

Gas Flow Sensor 0 ~ 10 SLPM Male, 0.232" (5.90mm) Plastic #CommonPartsLibrary #IntegratedCircuit #Sensor #Transducer #Flow-Sensor #FS2012

A semiconductor light source that emits light when current flows through it.

10-pA, 5-V, 1: 1 (SPST), 1-channel analog switch (active high) with flow-through pinout #commonpartslibrary #integratedcircuit #circuitswitch #spst

Polymeric PTC Resettable Fuse 60V 500 mA Ih Surface Mount 2-SMD 500mA resettable fuse pptc The SMD050F-2 is a surface-mount resettable fuse (PPTC – Polymer Positive Temperature Coefficient) designed to provide overcurrent protection in low-voltage electronic circuits. It operates by increasing its resistance significantly when excessive current flows, thereby limiting current and protecting downstream components. Once the fault condition is removed and the device cools, it automatically resets to its low-resistance state, enabling normal operation without replacement. This component is commonly used in power supply lines, USB ports, battery-powered devices, and general electronic protection applications where space-saving and reliability are important. Key Features Resettable overcurrent protection (self-recovering) Surface-mount package for compact PCB layouts Low resistance in normal operation Fast response to fault conditions Automatic reset after fault removal RoHS compliant and lead-free Electrical Characteristics Hold current: 0.5 A Trip current: 1.0 A (typical) Maximum voltage: 60 V Maximum current: 40 A (fault current rating) Initial resistance: low resistance range suitable for minimal voltage drop Resistance after trip: significantly increased to limit current Thermal Characteristics Operating temperature range: -40°C to +85°C Trip time dependent on applied current and ambient temperature Reset time dependent on cooling conditions Mechanical Characteristics Package type: Surface-mount (SMD) Compact footprint suitable for dense PCB layouts Compatible with standard reflow soldering processes Applications USB and peripheral port protection Power supply and DC line protection Battery pack protection Consumer electronics Industrial control circuits Compliance and Standards RoHS compliant Halogen-free (depending on manufacturer variant) Meets industry standards for resettable fuses #commonpartslibrary #circuitprotection #ptc #fuse

5-V, 1: 1 (SPST), 1-channel general-purpose analog switch (active high) with flow-through pinout -40 to 85 SOT-23-5 #commonpartslibrary #integratedcircuit #circuitswitch #spst

10-pA, 5-V, 1: 1 (SPST), 1-channel analog switch (active low) with flow-through pinout SOT-23-5 #commonpartslibrary #integratedcircuit #circuitswitch #spst

4.7 µH Unshielded Drum Core, Wirewound Inductor 62 A 0.95mOhm Max Vertical, 2 PC Pin The IHDM1008BCEV4R7M30 is a surface-mount power inductor designed for energy storage and filtering in switching power supplies and DC-DC converter circuits. It provides stable inductance characteristics under varying current conditions, making it suitable for applications requiring efficient power conversion and noise suppression. The device is constructed using a magnetically shielded structure to minimize electromagnetic interference and ensure reliable operation in densely populated circuit environments. Its design supports high current handling capability while maintaining low core losses, contributing to overall system efficiency. Functional Overview The inductor stores energy in its magnetic field when current flows through it and releases that energy when the current changes. This behavior is essential for smoothing current in switching regulators and maintaining stable voltage levels in power circuits. Its low resistance winding helps reduce power loss, while the magnetic shielding limits flux leakage, improving performance in sensitive electronic systems. The component is optimized for high-frequency operation typically found in modern power management designs. Electrical Characteristics The device provides a fixed inductance value with stable performance across a range of operating currents. It supports relatively high saturation current levels, allowing it to function effectively in power circuits without significant degradation of inductance. Low direct current resistance contributes to improved efficiency and reduced heat generation. The inductor is designed to maintain consistent electrical behavior across typical operating temperatures and frequencies used in switching applications. Interface Requirements The component features standard surface-mount terminals for direct placement onto printed circuit boards. Proper soldering and pad design are required to ensure mechanical stability and optimal electrical performance. Placement considerations should include minimizing loop area and proximity to switching elements to reduce noise and maximize efficiency. Operating Conditions The inductor is intended for operation across a wide temperature range suitable for consumer and industrial electronics. It is capable of maintaining performance under continuous load conditions and varying thermal environments. Adequate thermal management and airflow may be necessary in high-current applications to prevent excessive temperature rise. Protection and Reliability Features The device is constructed with durable materials to ensure long-term reliability under electrical and thermal stress. Its magnetically shielded design reduces susceptibility to external interference and limits emissions that could affect nearby components. It is designed to withstand standard handling and soldering processes associated with surface-mount assembly. Packaging and Integration The IHDM1008BCEV4R7M30 is provided in a compact surface-mount package optimized for automated assembly processes. Its form factor allows efficient use of board space while supporting high-performance power designs. The package design ensures secure mounting and consistent electrical contact in high-density circuit layouts. Applications Typical applications include DC-DC converters, voltage regulator modules, power management circuits, filtering stages, and energy storage elements in portable devices, industrial equipment, and communication systems. #commonpartslibrary #inductors

5-V, 1:1 (SPST), 1-channel general-purpose analog switch (active high) with flow-through pinout #CommonPartsLibrary #IntegratedCircuit #Interface #AnalogSwitch #Multiplexer #Demultiplexer

Air Velocity Sensor Module – MEMS thermopile-based air velocity sensor with a 0 to 15 m/s measurement range, 12-bit digital output over an I²C interface, and 3.3 V supply operation. Features 125 ms response time, ±5% full-scale accuracy (at 25°C), 400 kHz I²C clock support, and an operating temperature range of −20°C to +85°C. The module measures 8 × 9 × 3.7 mm and incorporates a silicon-carbide-coated sensing element with solid thermal isolation technology. #Renesas #FS3000 #FS30001015 #AirVelocitySensor #FlowSensor #MEMS #Thermopile #I2C #12Bit #DigitalSensor #EmbeddedSystems #IndustrialSensors

Polymeric PTC Resettable Fuse 6V 3 A Ih Surface Mount 1812 (4532 Metric), Concave The 1812L300MR is a surface-mount resettable fuse (PPTC – Polymer Positive Temperature Coefficient) designed to provide overcurrent protection in electronic circuits. When excessive current flows, the device increases its resistance sharply, limiting current to a safe level. Once the fault condition is removed and power is cycled or reduced, the device resets automatically. This component is commonly used in power supply lines, battery-powered devices, USB ports, and general consumer electronics where resettable protection is preferred over one-time fuses. Key Features Resettable overcurrent protection device (PPTC technology) Surface-mount package (1812 footprint) Automatic recovery after fault removal Low resistance in normal operation Fast trip response to overcurrent events RoHS compliant and lead-free Electrical Characteristics Hold Current (I_hold): 3.0 A Trip Current (I_trip): ~6.0 A Maximum Voltage Rating: 6 VDC Maximum Current Rating: 40 A (short duration fault) Initial Resistance (R_min / R_max): ~0.015 Ω / 0.050 Ω Trip Time: Dependent on current and ambient conditions Thermal Characteristics Operating Temperature Range: -40°C to +85°C Storage Temperature Range: -40°C to +85°C Typical Power Dissipation: Dependent on fault condition Mechanical Characteristics Package Type: Surface Mount (SMD) Package Size: 1812 (4.5 mm × 3.2 mm approx.) Termination: Nickel barrier with matte tin plating Mounting: Reflow solder compatible Applications Power supply protection USB and peripheral ports Battery pack protection Consumer electronics Industrial control circuits Compliance and Standards RoHS compliant Halogen-free (depending on manufacturer variant) UL recognized (check specific manufacturer certification) Notes Trip and hold currents are specified at 25°C; derating is required at higher temperatures Device performance depends on PCB layout and thermal environment Proper spacing and copper area improve heat dissipation and reliability #commonpartslibrary #circuitprotection #ptc #fuse

Polymeric PTC Resettable Fuse 6V 1 A Ih Surface Mount 0603 (1608 Metric), Concave polyfuse 1A 0603 The 0603L100SLYR is a surface-mount resettable fuse (PPTC – Polymeric Positive Temperature Coefficient) designed to provide overcurrent protection in low-voltage electronic circuits. When excessive current flows, the device increases its resistance sharply, limiting current and protecting downstream components. Once the fault condition is removed and power is cycled or reduced, the fuse resets automatically. This component is widely used in compact electronic devices due to its small 0603 footprint, making it suitable for space-constrained PCB designs. Key Features Resettable overcurrent protection device Compact 0603 surface-mount package Fast response to fault conditions Automatic reset after fault removal RoHS compliant and lead-free construction Low resistance in normal operation Stable performance over multiple trip cycles Electrical Characteristics Hold current: 1.0 A Trip current: approximately 2.0 A Maximum voltage rating: 6 V Maximum current rating: 40 A (short duration fault current) Initial resistance: low resistance typical for minimal voltage drop Resistance after trip: significantly increased to limit current Thermal Characteristics Operating temperature range: −40 °C to +85 °C Trip time dependent on current and ambient temperature Self-heating mechanism triggers resistance increase Mechanical Characteristics Package type: 0603 (1608 metric) Mounting type: surface mount (SMD) Body material: polymer-based PTC Terminal finish: solderable metal electrodes compatible with reflow soldering Applications USB ports and power lines Battery-powered devices Consumer electronics Portable devices Embedded systems and IoT hardware Power supply protection circuits Compliance and Standards RoHS compliant Halogen-free (typical for series) Meets industry standards for resettable fuses #commonpartslibrary #circuitprotection #ptc #fuse

FUSE BRD MNT 2A 2410 24F 2A250V is a surface-mount ceramic fast-acting fuse designed for overcurrent and short-circuit protection in electronic equipment. It is commonly used in power supplies, household appliances, instruments, displays, communication equipment, and other low-power electronic circuits. The fuse opens quickly when excessive current flows, helping protect sensitive components from damage. Key Features Rated Current: 2A Rated Voltage: 250V AC Fuse Type: Fast-acting (Quick Blow) Construction: Ceramic tube fuse Mounting Type: Surface Mount (SMD) Package Size: Approximately 6.1 mm × 2.6 mm × 2.6 mm Breaking Capacity: 35A @ 250VAC RoHS Compliant Provides overcurrent and short-circuit protection Suitable for power supplies, electronic instruments, displays, communication devices, and household appliances Typical Applications AC/DC power supplies Consumer electronics LCD monitors and displays Home appliances Communication equipment Industrial electronic control circuits #CommonPartsLibrary #fuse

An instrument for measuring flowing electric current in amperes.