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M2.5 x 6mm Hexagonal Allen Head Stainless Steel Bolt 🔩M2.5 x 6mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for p..

M2.5 x 8mm Hexagonal Allen Head Stainless Steel Bolt 🔩M2.5 x 8mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for p..

M3 x 10mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 10mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 12mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 12mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 14mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 14mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 18mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 18mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 20mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 20mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 22mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 22mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 25mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 25mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 30mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 30mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 40mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 40mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 45mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 45mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 × 4 mm Brass Standoff Spacer (Female–Female)The M3 × 4 mm Brass Standoff Spacer (Female–Female) is a precision fastener used to create a rigid, acc..

M3 x 4mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 4mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for preci..

M3 x 50mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 50mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for pre..

M3 x 5mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 5mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for preci..

M3 × 6 mm Phillips Pan Head Stainless Steel Bolt🔩This M3 × 6 mm Phillips pan head bolt is manufactured from high-quality stainless steel for reliable ..

M3 x 8mm Hexagonal Allen Head Stainless Steel Bolt 🔩M3 x 8mm Hexagonal Allen Head Stainless Steel Bolt  is a high-quality component designed for preci..

MG90S Servo Motor and Gear Set - 180 DegreeThe MG90S Servo Motor and Gear Set is a compact, high-performance servo motor designed to deliver precise c..

MK8 Nozzle 2.85 mm — 0.2 mm M6 Brass Nozzle for 3D PrintersThe MK8 2.85 mm — 0.2 mm Brass Nozzle is a precision-machined extrusion tip designed for FD..

MQ-2 Gas Sensor Module🔥The MQ-2 Gas Sensor Module is a robust, low-cost detector designed to sense smoke, butane, methane, propane, hydrogen, and othe..

NodeMCU ESP8266 Lua Development Board CP2102 – Your Gateway to IoT 🚀Explore, prototype, and deploy connected devices with the NodeMCU CP2102 Developme..

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🧠 Raspberry Pi Pico Development BoardThe Raspberry Pi Pico is a compact, high-performance microcontroller board built around the RP2040 chip from the ..

RC4558P Dual Operational Amplifier DIP‑8The RC4558P OpAmp Integrated Circuit is a reliable, general‑purpose dual operational amplifier designed for hi..

Red 3-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototypes,..

Red 4-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototypes,..

Red 5-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototypes,..

Red 6-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototypes,..

Reed Sensor Module (Reed Relay) 🧲The Reed Sensor Module is a compact, magnetically actuated reed switch assembly mounted on a PCB for easy integration..

Rotary Encoder Module KY-040 🎛️The Rotary Encoder Module KY-040 is a reliable incremental (quadrature) rotary encoder with an integrated push-button, ..

Sensor Shield v5.0 Expansion Board ⚡The Sensor Shield v5.0 is a versatile expansion board designed to streamline prototyping with Arduino-compatible b..

Soil Moisture Sensor Module 🌱The Soil Hydration Monitoring Device is a reliable, high-quality sensor designed to measure soil moisture (hydration) lev..

Songle SRD 12V DC Relay 10A 250V AC/DCThe Songle SRD series is a family of compact, PCB‑mount electromechanical relays designed for reliable switching..

Songle SRD 3V DC Relay 10A 250V AC/DCThe Songle SRD series is a family of compact, PCB‑mount electromechanical relays designed for reliable switching ..

Songle SRD 48V DC Relay 10A 250V AC/DCThe Songle SRD series is a family of compact, PCB‑mount electromechanical relays designed for reliable switching..

Songle SRD 5V DC Relay 10A 250V AC/DCThe Songle SRD series is a family of compact, PCB‑mount electromechanical relays designed for reliable switching ..

Songle SRD 6V DC Relay 10A 250V AC/DCThe Songle SRD series is a family of compact, PCB‑mount electromechanical relays designed for reliable switching ..

STM32F030F4P6 Development Board 🚀 The Ultimate Compact Solution for Prototyping and Project DevelopmentAccelerate your embedded designs with the STM32..

STM32F103C8T6 Development BoardThe STM32F103C8T6 Development Board—widely known as the Blue Pill—is a compact, cost-effective platform for building an..

STM8S003F3P6 Development Board 🔧The STM8S003F3P6 development board is a cost-effective, versatile platform for rapid prototyping and product developme..

STM8S103F3P6 Development Board — Compact, Efficient 8‑bit Microcontroller PlatformThe STM8S103F3P6 Development Board is a cost-effective, multifunctio..

SW-520D Tilt Sensor Module Switch 🌐The SW-520D Tilt Sensor Module is a compact, reliable angle/tilt detection solution for Arduino, Raspberry Pi, and ..

Universal IR Receiver — TL1838 / VS1838B (38 kHz)The TL1838 / VS1838B is a compact, high-sensitivity infrared (IR) receiver designed for 38 kHz carrie..

ULN2003 Darlington Transistor Array — DIP-16 High-Current Driver ICThe ULN2003 is a DIP-16 Darlington transistor array designed for reliable high-volt..

ULN2803 Transistor DIP-18The ULN2803 is an 8‑channel NPN Darlington transistor array in a DIP‑18 package, designed to interface low‑power logic with h..

White 5-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototype..

White 6-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototype..

WS2812 LilyPad RGB Pixel Board – Sewable Addressable LED Module 🌈The WS2812 Module: LilyPad RGB Pixel Board is a compact, sewable LED module designed ..

XL6009 Adjustable DC-DC Step-Up Voltage Regulator ModuleThe XL6009 Adjustable DC-DC Step-Up Voltage Regulator Module is a high-performance, cost-effec..

XT-90 Battery Connector (Male + Female) PairThe XT-90 Battery Connector is a robust, high-reliability power connector engineered for high-current and ..

Yellow 2-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototyp..

Yellow 3-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototyp..

Yellow 4-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototyp..

Yellow 5-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototyp..

Yellow 6-Pin 2.54mm Female Header for Arduino and ElectronicsReliable 2.54 mm header connector designed for secure, repeatable connections in prototyp..

50R NTC Thermistor 5mm — High-Sensitivity Temperature Sensor 🌡️The NTC thermistor is a compact, high-sensitivity temperature-sensing component designe..

 LM386 Audio Amplifier Integrated Circuit DIP-8 🔊The LM386 is a compact, low-voltage audio amplifier IC in a standard DIP-8 package, designed for easy..

M2.5 x 22mm Button Head Allen Stainless Steel Bolt (304) 🔩The M2.5 x 22mm Button Head Allen Stainless Steel Bolt (304) is a premium-grade fastener des..

 M3 × 6 mm Nylon Plastic Bolt (Screw)-Black🔩The M3 × 6 mm Nylon Bolt is a lightweight, non-conductive fastener ideal for assembling and insulating ele..

 M3 × 6 mm Nylon Plastic Bolt (Screw)-White🔩The M3 × 6 mm Nylon Bolt is a lightweight, non-conductive fastener ideal for assembling and insulating ele..

 MOC3021 Triac-Output Optocoupler IC🔌The MOC3021 is a DIP-6 triac-output optocoupler designed for reliable isolation and efficient control of AC loads..

 TP4056 Micro USB Lithium LiPo Battery Charging Module🔋The TP4056 Micro USB Lithium LiPo Battery Charging Module is a compact, reliable charger for si..

HSS Steel Drill Bit 0.5 mm 🛠️Engineered for precision drilling and long service life, this High-Speed Steel (HSS) drill bit delivers clean, accurate h..

HSS Steel Drill Bit 0.8 mm 🛠️Engineered for precision drilling and long service life, this High-Speed Steel (HSS) drill bit delivers clean, accurate h..

1 mH THT Power InductorThe 1 mH THT Power Inductor in a Dual In-line Package (DIP) is a reliable, through-hole electronics component designed for robu..

HSS Steel Drill Bit 1.1 mm 🛠️Engineered for precision drilling and long service life, this High-Speed Steel (HSS) drill bit delivers clean, accurate h..

10 mH THT Power InductorThe 10 mH THT Power Inductor in a Dual In-line Package (DIP) is a reliable, through-hole electronics component designed for ro..

10 MHz Quartz Crystal Oscillator HC-49S ⏱️The quartz crystal oscillator is a widely used electronics component for accurate timing in digital and RF c..

10 MHz SMD Crystal Oscillator HC-49S – Stable Frequency Source for Electronics ⏱️The SMD crystal oscillator is a compact, surface-mount component prov..

100 uH THT Power InductorThe 100 uH THT Power Inductor in a Dual In-line Package (DIP) is a reliable, through-hole electronics component designed for ..

100°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 100°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

100K Trimpot 1/2W 3362P – Top-Adjust Single-Turn Trimmer Potentiometer 🔧The 3362P 100 kΩ trimpot is a compact, through-hole trimmer potentiometer desi..

100K NTC Thermistor 🌡️The 100K NTC Thermistor is a reliable, high-precision temperature sensor engineered for 3D printers and general electronics proj..

100K Trimpot Potentiometer 3296WThe 3296W series is a family of multi-turn trimpot potentiometers designed for precise, stable adjustments in analog c..

100K Trimpot Potentiometer 3386P The 100K Trimpot Potentiometer 3386P is a compact, adjustable resistor designed for precise calibration in analog and..

100pF 50V Ceramic Capacitor — Reliable RF and Oscillator TuningThe 100 pF 50 V ceramic capacitor is a compact, non‑polarized passive component ideal f..

100R NTC Thermistor 5mm — High-Sensitivity Temperature Sensor 🌡️The NTC thermistor is a compact, high-sensitivity temperature-sensing component design..

100R Trimpot Potentiometer 3386P The 100R Trimpot Potentiometer 3386P is a compact, adjustable resistor designed for precise calibration in analog and..

10K Trimpot RM065 Mini Semi-Adjustable Potentiometer (6 mm) 🔧The RM065 10K trimpot is a compact, single-turn trimmer potentiometer designed for precis..

Electrolytic Capacitor 100 µF (100uF) 16 V ⚡Electrolytic capacitors are essential electronics components used for energy storage, filtering, and signa..

Electrolytic Capacitor 100 µF (100uF) 35 V ⚡Electrolytic capacitors are essential electronics components used for energy storage, filtering, and signa..

Electrolytic Capacitor 100 µF (100uF) 400 V ⚡Electrolytic capacitors are essential electronics components used for energy storage, filtering, and sign..

105°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 105°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

10A 1000V Bridge Rectifier KBU-1010 (KBU1010) ⚡ The KBU-1010 bridge diode is a robust, high-performance full-wave rectifier designed for use in power ..

10K NTC Thermistor 3mm — High-Sensitivity Temperature Sensor 🌡️The NTC thermistor is a compact, high-sensitivity temperature-sensing component designe..

10 kΩ Resistor (1/4 Watt) – Carbon Film, Through-Hole 🔧Optimize your circuits with a reliable, general-purpose 10 kΩ carbon film resistor rated at 1/4..

10K Trimpot 1/2W 3362P – Top-Adjust Single-Turn Trimmer Potentiometer 🔧The 3362P 10 kΩ trimpot is a compact, through-hole trimmer potentiometer design..

10K Trimpot Potentiometer 3296WThe 3296W series is a family of multi-turn trimpot potentiometers designed for precise, stable adjustments in analog ci..

10K Trimpot Potentiometer 3386P The 10K Trimpot Potentiometer 3386P is a compact, adjustable resistor designed for precise calibration in analog and d..

Blue 10mm LED 🔵The Blue 10mm LED is a reliable, long‑life, and energy‑efficient light source designed for both hobbyist projects and professional inst..

10mm LED Red🔴The 10 mm Red LED delivers vivid, reliable illumination with excellent energy efficiency and long operational life. Ideal for DIY electro..

10mm LED WhiteThe White 10mm LED is a high-quality, long-life, and energy-efficient through-hole light source suited for everything from DIY electroni..

10mm LED YellowThe 10mm Yellow LED is a high-visibility, energy-efficient through-hole indicator ideal for prototyping, DIY electronics, and professio..

10nF 50V Ceramic Capacitor — Reliable RF and Oscillator TuningThe 10nF 50V ceramic capacitor is a compact, non‑polarized passive component ideal for h..

10pF 50V Ceramic Capacitor — Reliable RF and Oscillator TuningThe 10pF 50V ceramic capacitor is a compact, non‑polarized passive component ideal for h..

10 Ω Resistor (1/4 Watt) – Carbon Film, Through-Hole 🔧Optimize your circuits with a reliable, general-purpose 10 Ω carbon film resistor rated at 1/4 W..

Electrolytic Capacitor 10 µF (10uF) 63 V ⚡Electrolytic capacitors are essential electronics components used for energy storage, filtering, and signal ..

10uH THT Power Inductor for Dual Inline Package (DIP)The 10 µH (10uH) THT DIP Power Inductor is a robust through-hole electronics component designed f..

10V Zener Diode - High-Precision Zener for Voltage Regulation and Protection ⚙️The 10V Zener diode provides dependable voltage regulation and overvolt..

10W Power LED Royal Blue 445–455nm 🔵This high-power 10W Royal Blue LED (445–455 nm) delivers intense, narrow-band blue light ideal for professional an..

11.0592 MHz Quartz Crystal Oscillator HC-49S ⏱️The quartz crystal oscillator is a widely used electronics component for accurate timing in digital and..

110°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 110°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

115°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 115°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

117°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 117°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

12 MHz Crystal Oscillator - GWX-26 Series ⏱️ – Stable Frequency Source for ElectronicsThe GWX-26 crystal oscillator series provides a precise and reli..

12 MHz Quartz Crystal Oscillator HC-49S ⏱️The quartz crystal oscillator is a widely used electronics component for accurate timing in digital and RF c..

12 MHz SMD Crystal Oscillator HC-49S – Stable Frequency Source for Electronics ⏱️The SMD crystal oscillator is a compact, surface-mount component prov..

120°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 120°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

125°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 125°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

12V Active Buzzer (12 mm) 🔔The 12V Active Buzzer (diameter 12 mm) is a compact audible indicator designed for simple, reliable alerts in electronic ci..

130°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 130°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

65°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 65°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the circu..

14 mm Reed Switch NO 2‑Pin 🧲The 14 mm Reed Switch (Normally Open, 2‑pin) is a compact, glass‑encapsulated electromechanical switch designed for low vo..

14 mm Reed Switch, NO/NC, 3‑Pin (SPDT) 🧲The 14 mm reed switch is an electromechanical sensor and switching component that uses a magnetic field to ope..

140°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 140°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

142°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 142°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

144°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 144°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

145°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 145°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

Electrolytic Capacitor 150 µF (150uF) 35 V ⚡Electrolytic capacitors are essential electronics components used for energy storage, filtering, and signa..

155°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 155°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

16 MHz Crystal Oscillator - GWX-26 Series ⏱️ The GWX-26 crystal oscillator series provides a precise and reliable clock signal for microcontrollers, c..

16 MHz Quartz Crystal Oscillator HC-49S ⏱️The quartz crystal oscillator is a widely used electronics component for accurate timing in digital and RF c..

160°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 160°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

165°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 165°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

16x2 LCD Display Module (Green Screen) – LCD1602📟The LCD1602 16x2 character display is a reliable, high-contrast green-backlit LCD module designed for..

170°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 170°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

172°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 172°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

175°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 175°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

180°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 180°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

184°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 184°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

190°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 190°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

192°C Thermal Fuse, 10 A, 250 V 🔥🛡️The 192°C Thermal Fuse (also called a thermal cutoff or TCO) is a single-use safety device designed to open the cir..

1K NTC Thermistor 3mm — High-Sensitivity Temperature Sensor 🌡️The NTC thermistor is a compact, high-sensitivity temperature-sensing component designed..

1 kΩ Resistor (1/4 Watt) – Carbon Film, Through-Hole 🔧Optimize your circuits with a reliable, general-purpose 1 kΩ carbon film resistor rated at 1/4 W..

1K Rotary Potentiometer 20mm – Linear Taper Variable Resistor A potentiometer is a three-terminal variable resistor designed to act as an adjustable v..

1K Trimpot 1/2W 3362P – Top-Adjust Single-Turn Trimmer Potentiometer 🔧The 3362P 1 kΩ trimpot is a compact, through-hole trimmer potentiometer designed..

1K Trimpot Potentiometer 3296WThe 3296W series is a family of multi-turn trimpot potentiometers designed for precise, stable adjustments in analog cir..

1K Trimpot Potentiometer 3386P The 1K Trimpot Potentiometer 3386P is a compact, adjustable resistor designed for precise calibration in analog and dig..

1K Trimpot RM065 Mini Semi-Adjustable Potentiometer (6 mm) 🔧The RM065 1K trimpot is a compact, single-turn trimmer potentiometer designed for precise,..

1 MΩ Resistor (1/4 Watt) – Carbon Film, Through-Hole 🔧Optimize your circuits with a reliable, general-purpose 1 MΩ carbon film resistor rated at 1/4 W..

1M Rotary Potentiometer 20mm – Linear Taper Variable Resistor A potentiometer is a three-terminal variable resistor designed to act as an adjustable v..

1M Trimpot 1/2W 3362P – Top-Adjust Single-Turn Trimmer Potentiometer 🔧The 3362P 1MΩ trimpot is a compact, through-hole trimmer potentiometer designed ..

1M Trimpot Potentiometer 3296WThe 3296W series is a family of multi-turn trimpot potentiometers designed for precise, stable adjustments in analog cir..

1M Trimpot Potentiometer 3386P The 1M Trimpot Potentiometer 3386P is a compact, adjustable resistor designed for precise calibration in analog and dig..

1M Trimpot RM065 Mini Semi-Adjustable Potentiometer (6 mm) 🔧The RM065 1M trimpot is a compact, single-turn trimmer potentiometer designed for precise,..

1N4007 Rectifier Diode 1000V 1A DO-41⚡The 1N4007 is a robust, general-purpose rectifier diode designed to conduct current in one direction and block i..