PGA103+ based ultra low noise, high dynamic range preamp for VHF and UHF. By Sam Jewell, G4DDK and Kent Britain, WA5VJB

Welcome to your new project. Imagine what you can build here.

This project is a distance detecting sensor module build around GP2Y0D805Z0F IC from SHARP/Socle Technology. It includes decoupling capacitors, feedback resistors, and a LED for signal indication, with power being supplied via the J1 connector. #industrialSensing #optical #digital #reusable #module #sublayout #industrialsensing #sharp

SOP254P675X300-4N Optoisolator Transistor Output 3750Vrms 1 Channel 4-Mini-Flat Transistor Output Optocouplers 130-400% CTR ranked PC357NJ0000F 3 852-PC357N6J000F Sharp Microelectronics PC357N6J000F

Zener Diode 5.1 V 1 W ±5% Surface Mount MELF DL4733A-X - High Reliability - Very Sharp Reverse Characteristic - Low Reverse Current Level - Lead Free Finish/RoHS Compliant - Moisture Sensitivity Level 1 - Operating Temperature: -65 к to +175 к - Storage Temperature: -65 к to +175 к - 1 Watt DC Power Dissipation - Maximum Thermal Resistance: 100K/W Junction To Ambient Test Conditions: I = 9.5mm(3/8”),TL = constant - Maximum Forward Voltage @ 200mA: 1.2 Volts #Diode #Zener #SMD

Polymeric PTC Resettable Fuse 6V 500 mA Ih Surface Mount 0603 (1608 Metric), Concave polyfuse 500mA 0603 The 0603L050YR is a surface-mount resettable fuse based on polymeric positive temperature coefficient technology, designed to provide overcurrent protection in compact electronic circuits. Under normal operating conditions, the device exhibits low resistance and allows current to pass with minimal power loss. When exposed to an overcurrent condition, the device transitions to a high-resistance state, effectively limiting the current and protecting downstream components. Once the fault condition is removed and power is cycled or the device cools, the fuse automatically resets to its original low-resistance state. This component is optimized for space-constrained applications requiring reliable, resettable protection, such as portable electronics, battery-powered systems, and low-voltage signal lines. Its small form factor enables integration into dense PCB layouts while maintaining compliance with industry safety standards for overcurrent protection. Package and Mounting: Surface-mount device in standard 0603 footprint, compatible with automated assembly processes including reflow soldering. Electrical Characteristics: The device is designed to maintain normal operation at a defined hold current level and transition to a protective state when the current exceeds its trip threshold. It operates within low-voltage circuits and provides fast response to fault conditions while minimizing nuisance tripping under typical load variations. Functional Behavior: The fuse operates by increasing resistance sharply in response to thermal energy generated by excess current. This behavior reduces current flow and limits fault energy. After removal of the overcurrent condition, the device gradually returns to its conductive state, enabling repeated use without replacement. Applications: Suitable for use in power lines, battery packs, USB interfaces, consumer electronics, and other low-voltage systems where resettable overcurrent protection is required. Compliance and Reliability: Designed to meet relevant safety and environmental standards for electronic components, ensuring stable performance across specified operating conditions and long-term reliability in field applications. #commonpartslibrary #fuse #Circuit-Protection #PTC #ptc #polymeric

Built-in Amplifier Type OPIC Light Detector opto receiver amplifier light detector OPIC Sharp*IS485*

Built-in Amplifier Type OPIC Light Detector opto receiver amplifier light detector OPIC Sharp*IS485*

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

Optocouplers - Phototransistor Output PC817X2NSZ9F DIP-4_L6.4-W4.6-P2.54-LS7.6-BL LCSC Part Number: C390734 JLCPCB Part Class: Extended Part Manufactured by SHARP(夏普)