This breakout board will solve all your power-monitoring problems. Instead of struggling with two multimeters, you can just use the handy INA219B chip on this breakout to both measure both the high side voltage and DC current draw over I2C with 1% precision. #Sublayout #CurrentSensor

Vishay WSLF25122L000FEA Current Sense Resistor, 2mOhm, 5W, 2512 Package

Produces a sinusoidal current.

A power source which provides a constant current to a load, even despite changes and variance in load resistance

Arbitrary Current Transformer for Solar Inverter

A type of MOSFET in which the channel of the MOSFET is composed of a majority of electrons as current carriers.

N-Channel 30 V 5.7A (Ta) 1.4W (Ta) Surface Mount SOT-23-3 The AO3400A N-Channel MOSFET is a 30V N-channel enhancement-mode MOSFET designed using trench MOSFET technology. It is widely used for load switching, DC-DC converters, motor driving, and PWM control applications due to its very low on-resistance and compact SOT-23 package. It is especially popular in small electronics and embedded systems because it can be driven directly by 3.3V or 5V logic signals, making it ideal for microcontroller-based designs. Key Features Drain-Source Voltage (VDS): 30V Continuous Drain Current (ID): up to 5.7A (at 25°C) Ultra-low RDS(on): ~26.5 mΩ @ VGS = 10V ~32 mΩ @ VGS = 4.5V ~48 mΩ @ VGS = 2.5V Logic-level gate drive (works well with MCU GPIOs) Fast switching performance (ns-range switching times) Low gate charge (~6–7 nC) → efficient switching Compact SOT-23 package for space-saving PCB design Low power dissipation (~1.4W typical at 25°C ambient) Operating temperature: −55°C to +150°C Typical Applications Load switching (LEDs, sensors, small motors) Power management in battery-powered devices DC-DC converters PWM control circuits Fan and heater control in embedded systems #AO3400A #MOSFET #NChannelMOSFET #PowerElectronics #SOT23 #LoadSwitch #EmbeddedSystems #ElectronicsComponents #TrenchMOSFET #Commonpartslibrary #Transistor #FET

JST XH Connector Header Through Hole 2 position 0.098" (2.50mm) Connector header for wire-to-board interconnection, providing a 2-position through-hole interface for mating with JST XH Series crimp housings. It features a 2.50 mm pitch, a rated current of 3 A AC/DC, a rated voltage of 250 V AC/DC, and supports conductors from AWG 30 to AWG 22 when used with the specified mating contacts. #Connector #WireToBoard #Header #ThroughHole #2Position #2_50mmPitch #JST #XHSeries

Bipolar (BJT) Transistor NPN 40V 200 mA 300MHz 300 mW Surface Mount SOT-23-3 (TO-236) The MMBT3904LT1G is a general-purpose NPN bipolar junction transistor designed for switching and amplification applications. It is housed in a compact SOT-23 surface-mount package, making it suitable for high-density PCB designs. This transistor is widely used in low-power signal processing, digital switching, and analog amplification circuits due to its reliable performance and fast switching characteristics. Key Features General-purpose NPN transistor Compact SOT-23 surface-mount package Fast switching speed Low saturation voltage Suitable for low-current and low-power applications High reliability and stability Pb-free, Halogen-free, and RoHS compliant Electrical Characteristics (Typical @ 25°C unless otherwise specified) Collector-Emitter Voltage (VCEO): 40 V Collector-Base Voltage (VCBO): 60 V Emitter-Base Voltage (VEBO): 6 V Collector Current (IC): 200 mA (max) DC Current Gain (hFE): 100 – 300 Collector-Emitter Saturation Voltage (VCE(sat)): 0.2 V (typ) Transition Frequency (fT): ~300 MHz Absolute Maximum Ratings Collector Current (Continuous): 200 mA Power Dissipation: ~225 mW Junction Temperature: +150°C (max) Operating Temperature Range: -55°C to +150°C Storage Temperature Range: -55°C to +150°C Mechanical Characteristics Package Type: SOT-23 (TO-236AB) Mounting Type: Surface Mount Number of Pins: 3 Marking Code: Dependent on lot/manufacturer marking Applications General-purpose switching circuits Signal amplification Digital logic interfacing LED drivers and small load switching Audio and RF signal processing #CommonPartsLibrary #TransistorBJT #MMBT2222

The NE555 devices are precision timing circuits capable of producing accurate time delays or oscillation. In time-delay or monostable operating modes, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle are controlled independently with two external resistors and a single external capacitor. Each timer has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage pin (CONT). When the trigger input (TRIG) is less than the trigger level, the flip-flop is set and the output goes high. If TRIG is greater than the trigger level and the threshold input (THRES) is greater than the threshold level, the flip-flop is reset and the output is low. The reset input (RESET) overrides all other inputs and is used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a lowimpedance path is provided between the discharge pin (DISCH) and the ground pin (GND). Tie all unused inputs to an appropriate logic level to prevent false triggering. The output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5V supply, output levels are compatible with TTL inputs. Features - Timing from microseconds to hours - Astable or monostable operation - Adjustable duty cycle - TTL-compatible output can sink or source up to 200mA - On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. Applications - Pulse-shaping circuits - Missing-pulse detectors - Pulse-width modulators - Pulse-position modulators - Sequential timers - Pulse generators -F requency dividers - Industrial controls

2 Position Terminal Block Header, Male Pins, Shrouded (4 Side) 0.200" (5.08mm) 90°, Right Angle Through Hole Phoenix Contact MSTBA 2.5/ 2-G-5.08 CAN connector terminal block 2 pin PCB header for providing a pluggable wire-to-board connection in the COMBICON MSTB 2.5 system. It features 2 positions with a 5.08 mm pitch, a nominal current rating of 12 A, a rated voltage of 320 V (III/2), tin-plated contacts, linear pin layout, and through-hole wave-solder mounting with the plug-in direction parallel to the PCB. #Connector #TerminalBlock #PCBHeader #ThroughHole #PhoenixContact #COMBICON

Slide Switch SPST 4A 125V Throuh Hole The L101011MS02Q is a single-pole, single-throw (SPST) miniature toggle switch designed for low-power switching applications. It features a compact panel-mount design with a durable actuator and reliable contact mechanism, making it suitable for control and signal switching in industrial, instrumentation, and consumer electronics. The switch provides a maintained (latching) ON-OFF function and is built for long mechanical and electrical life. Key Features SPST (Single Pole, Single Throw) configuration ON-OFF maintained switching function Miniature toggle actuator Panel mount design with threaded bushing Solder lug terminals for secure wiring High mechanical durability Compact form factor Mechanical Characteristics Mounting Type: Panel mount Actuator Type: Toggle lever Bushing Type: Threaded, with nut and washer Terminal Type: Solder lug Number of Poles: 1 Number of Throws: 1 Switching Function: ON-OFF (latching) Electrical Characteristics Rated Voltage: 125 VAC / 28 VDC Rated Current: 3 A @ 125 VAC, 6 A @ 28 VDC Contact Resistance: ≤ 20 mΩ (initial) Insulation Resistance: ≥ 1,000 MΩ Dielectric Strength: 1,000 VAC for 1 minute Material Specifications Housing: Thermoplastic or phenolic (manufacturer dependent) Actuator: Metal (nickel-plated brass) Contacts: Copper alloy with silver plating Terminals: Brass, tin-plated Environmental Specifications Operating Temperature Range: -30°C to +85°C Storage Temperature: -40°C to +85°C Mechanical Life Mechanical Life: ≥ 40,000 cycles Electrical Life: ≥ 10,000 cycles (at rated load) Typical Applications Control panels Power switching for small devices Instrumentation equipment Audio equipment Industrial and consumer electronics #commonpartslibrary #rocker #switch #spst

Connector Header Through Hole 6 position 0.100" (2.54mm) The 640456-6 is a 6-position, single-row wire-to-board header connector from TE Connectivity (AMP series), designed for reliable power and signal connections in a wide range of electronic applications. It features a 2.54 mm pitch and through-hole mounting for strong mechanical retention and ease of assembly. The connector is commonly used with matching crimp housings and terminals, providing a secure and serviceable interconnect solution for PCB-based systems. Key Features 6-position (1x6) header connector 2.54 mm pitch spacing Through-hole mounting (THT) Vertical (top-entry) orientation Friction-lock compatible with mating housings Tin-plated contacts for good conductivity and corrosion resistance Durable thermoplastic housing Mechanical Characteristics Mounting Type: Through Hole Orientation: Vertical (Top Entry) Pitch: 2.54 mm Number of Positions: 6 Row Configuration: Single row Mating Type: Friction fit with compatible housing Termination Type: Solder tails Electrical Characteristics Rated Current: Up to 3 A per contact (depending on wire gauge) Rated Voltage: 250 V AC/DC Contact Resistance: ≤ 20 mΩ (initial) Insulation Resistance: ≥ 1,000 MΩ Dielectric Withstanding Voltage: 1,000 VAC Material Specifications Housing: Thermoplastic, UL94V-0 rated Contacts: Copper alloy Contact Plating: Tin over nickel Environmental Specifications Operating Temperature Range: -40°C to +105°C Storage Temperature: -40°C to +105°C Packaging Information Packaging Type: Bulk or tray (varies by supplier) RoHS Compliant: Yes Lead-Free: Yes Compatible Components Mating Housing: TE Connectivity compatible crimp housings (e.g., AMP series) Crimp Terminals: соответствующие crimp contacts for 2.54 mm systems Typical Applications PCB interconnects Consumer electronics Industrial control systems Power and signal distribution Prototyping and development boards #CommonPartsLibrary #Connector #Header #Male-pins #MTA-100

17V Clamp 5A (8/20µs) Ipp Tvs Diode Surface Mount SOT-23-6 USBLC6-4 low-capacitance ESD/TVS protection diode array, 4 data-line protection, 17V clamping voltage, 5A peak pulse current (8/20µs), 3pF typical capacitance, protects VBUS, USB 2.0 high-speed compatible, IEC 61000-4-2 level 4 ESD protection, SOT-23-6 surface mount package.

Green LED Indication - Discrete 2.2V 0603 (1608 Metric) The SML-LX0603GW-TR is a surface-mount white LED in a compact 0603 (1608 metric) package, designed for indicator and backlighting applications. It offers high brightness with low power consumption and wide viewing angle, making it suitable for portable and space-constrained electronic devices. The device is optimized for automated assembly and is supplied in tape-and-reel packaging. Key Features White LED (cool white emission) Compact 0603 (1.6 mm × 0.8 mm) SMD package High luminous intensity with low forward current Wide viewing angle (~120° typical) Low power consumption Compatible with reflow soldering Tape & reel packaging for automated assembly Optical Characteristics (Typical values) Emission Color: White Luminous Intensity: ~100 to 300 mcd @ 20 mA Color Temperature: ~6000K to 8000K Viewing Angle: 120° Electrical Characteristics (Typical values unless otherwise specified) Forward Voltage (VF): Typ: 3.0 V Max: 3.4 V @ 20 mA Forward Current (IF): 20 mA (continuous) Reverse Voltage (VR): 5 V Power Dissipation: ~75 mW Absolute Maximum Ratings Forward Current: 25 mA (continuous) Peak Forward Current: 100 mA (pulse, short duration) Operating Temperature: -40°C to +85°C Storage Temperature: -40°C to +100°C Mechanical Characteristics Package Type: 0603 (1608 metric) Dimensions: ~1.6 mm × 0.8 mm × 0.8 mm Mounting Type: Surface mount (SMT) Polarity: Cathode marking on package Material Specifications Lens: Epoxy resin (diffused) LED Chip: InGaN (Indium Gallium Nitride) Lead Frame: Copper alloy with silver plating Packaging Information Packaging Type: Tape & Reel (TR) Reel Quantity: Typically 3,000–5,000 pcs per reel RoHS Compliant: Yes Lead-Free: Yes Typical Applications Status indicators Backlighting (LCD, keypad, buttons) Consumer electronics Portable devices Automotive interior lighting (low-power) #commonpartslibrary #optoelectronic #led #SML-LX0603

JST PH Connector Header Through Hole 3 position 0.079" (2.00mm) The B3B-PH-K-S(LF)(SN) is a 3-position, 2.0 mm pitch, through-hole (THT) male header from the JST PH series, designed for wire-to-board connections. It is a top-entry, shrouded connector that mates with JST PH crimp housings, commonly used for compact internal wiring in electronic devices such as consumer electronics, battery connections, and embedded systems. This connector is optimized for high-density PCB layouts, offering a reliable and secure connection with a locking mechanism and low contact resistance. Key Features Mechanical 3 positions (3-pin) 2.0 mm pitch (compact spacing) Through-hole mounting (THT) Top-entry / vertical orientation Shrouded header (prevents misalignment) Detent lock / friction lock for secure mating Electrical Rated current: up to 2A per pin Rated voltage: up to 100V AC/DC Low contact resistance (~10 mΩ max initial) High insulation resistance (≥1000 MΩ) Environmental Operating temperature: -25°C to +85°C Design & Reliability Fully shrouded design → protects pins and ensures proper insertion Reliable contact structure with dimpled contacts for stable connection PCB retention mechanism → improves mechanical stability Tin-plated contacts for good conductivity and solderability Application Use Commonly used for: Battery connectors Sensor modules Embedded systems (e.g., microcontroller boards) Consumer electronics internal wiring Power + signal low-current connections #commonpartslibrary #connector #header #tht

Humidity, Temperature 0 ~ 100% RH I2C ±2% RH 8 s Surface Mount The SHTC3-TR-2.5KS is a digital humidity and temperature sensor from Sensirion, designed for high accuracy, low power consumption, and compact integration. It utilizes a fully calibrated capacitive humidity sensor and bandgap temperature sensor, providing precise environmental measurements via an I²C interface. The device is optimized for battery-powered and space-constrained applications, featuring ultra-low power consumption and sleep modes, making it ideal for IoT, wearable, and mobile devices. Key Features Relative humidity and temperature sensing in a single package Fully calibrated and linearized digital output I²C interface (up to 1 MHz fast mode) Ultra-low power consumption with sleep mode High accuracy and fast response time Small DFN package for compact designs Factory calibrated, no external calibration required Mechanical Characteristics Package Type: DFN (Dual Flat No-Lead) Package Size: ~2.0 mm × 2.0 mm × 0.75 mm Mounting Type: Surface mount (SMT) Terminals: Bottom pads Electrical Characteristics Supply Voltage (VDD): 1.62 V to 3.6 V Average Supply Current: Measurement: ~170 µA Sleep Mode: ~0.3 µA Interface: I²C (address selectable) Output: Digital (temperature and relative humidity) Sensing Performance Humidity Range: 0 to 100 %RH Humidity Accuracy: ±2 %RH (typical) Temperature Range: -40°C to +125°C Temperature Accuracy: ±0.2°C (typical) Response Time (τ63%): ~8 seconds (humidity) Functional Features Low-power measurement modes (normal and low power) Sleep mode for minimal energy consumption CRC checksum for data integrity Clock stretching support (optional) Environmental Specifications Operating Temperature Range: -40°C to +125°C Storage Temperature Range: -40°C to +125°C Packaging Information Packaging Type: Tape & Reel (TR) Reel Quantity: 2,500 units (2.5KS) Lead-Free / RoHS compliant Typical Applications Wearable devices Smartphones and mobile electronics IoT sensors and nodes Smart home devices (thermostats, air quality monitors) HVAC systems Environmental monitoring #CommonPartsLibrary #Sensor #Transducer #Humidity #Moisture-Sensor

MAX98357A Series 5.5V 3.2W PCM Input Class D Audio Power Amplifier - TQFN-16 The MAX98357A/MAX98357B is an easy-to-use, low-cost, digital pulse-code modulation (PCM) input Class D amplifier that provides industry-leading Class AB audio performance with Class D efficiency. The digital audio interface automatically recognizes up to 35 different PCM and TDM clocking schemes which eliminates the need for I2C programming. Operation is further simplified by eliminating the need for an external MCLK signal that is typically used for PCM communication. Simply supply power, LRCLK, BCLK, and digital audio to generate audio! Furthermore, a novel pinout allows customers to use the cost-effective WLP package with no need for expensive vias (refer to Application Note 6643: Optimize Cost, Size, and Performance with MAX98357 WLP for more information). The digital audio interface is highly flexible with the MAX98357A supporting I2S data and the MAX98357B supporting left-justified data. Both ICs support 8 channel time division multiplexed (TDM) data. The digital audio interface accepts specified sample rates between 8kHz and 96kHz for all supported data formats. The ICs can be configured to produce a left channel, right channel, or (left/2 + right/2) output from the stereo input data. The ICs operate using 16/24/32-bit data for I2S and left-justified modes as well as 16-bit or 32-bit data using TDM mode. The ICs eliminate the need for the external MCLK signal that is typically used for PCM communication. This reduces EMI and possible board coupling issues in addition to reducing the size and pin count of the ICs. The ICs also feature a very high wideband jitter tolerance (12ns typ) on BCLK and LRCLK to provide robust operation. Active emissions-limiting, edge-rate limiting, and overshoot control circuitry greatly reduce EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices and reduces the component count of the solution. The ICs are available in 9-pin WLP (1.345mm x 1.435mm x 0.64mm) and 16-pin TQFN (3mm x 3mm x 0.75mm) packages and are specified over the -40°C to +85°C temperature range. ● Single-Supply Operation (2.5V to 5.5V) ● 3.2W Output Power into 4Ω at 5V ● 2.4mA Quiescent Current ● 92% Efficiency (RL = 8Ω, POUT = 1W) ● 22.8μVRMS Output Noise (AV = 15dB) ● Low 0.013% THD+N at 1kHz ● No MCLK Required ● Sample Rates of 8kHz to 96kHz ● Supports Left, Right, or (Left/2 + Right/2) Output ● Sophisticated Edge Rate Control Enables Filterless Class D Outputs ● 77dB PSRR at 1kHz ● Low RF Susceptibility Rejects TDMA Noise from GSM Radios ● Extensive Click-and-Pop Reduction Circuitry ● Robust Short-Circuit and Thermal Protection ● Available in Space-Saving Packages: 1.345mm x 1.435mm WLP (0.4mm Pitch) and 3mm x 3mm TQFN ● Solution Size with Single Bypass Capacitor is 4.32mm2 Applications ● Single Li-ion Cell/5V Devices ● Smart Speakers ● Notebook Computers ● IoT Devices ● Gaming Devices (Audio and Haptics) ● Smartphones ● Tablets ● Cameras #commonpartslibrary #integratedcircuit #linearamplifier #mono

600 Ohms @ 100 MHz 1 Ferrite Bead 0603 (1608 Metric) ferrite bead 600 ohm 0603 ferrite bead 600 ohm 100MHz 0603 ferrite bead 0603 600ohm The BLM18AG601SN1D is a surface-mount ferrite bead designed for suppression of high-frequency noise in electronic circuits. It provides high impedance at high frequencies while maintaining low DC resistance, making it suitable for power lines and signal line filtering. This component is commonly used in portable electronics, communication devices, and general digital circuits to improve EMI performance. ELECTRICAL CHARACTERISTICS Impedance: 600 Ω ±25% @ 100 MHz Rated Current: 500 mA (max) DC Resistance (DCR): 0.5 Ω (typ), 0.8 Ω (max) Insulation Resistance: 10 MΩ min PHYSICAL CHARACTERISTICS Package Size: 0603 (1608 Metric) Length: 1.6 mm Width: 0.8 mm Height: 0.8 mm (typ) Mounting Type: Surface Mount (SMD) ENVIRONMENTAL & OPERATING CONDITIONS Operating Temperature Range: -55°C to +125°C Storage Temperature Range: -55°C to +125°C APPLICATIONS Power supply line noise suppression Signal line EMI filtering Mobile devices and handheld electronics Computers and peripherals Consumer electronics FEATURES High impedance at high frequencies for effective noise suppression Low DC resistance minimizes signal/power loss Compact 0603 package suitable for high-density PCB layouts Reliable multilayer construction Lead-free and RoHS compliant PACKAGING Packaging Type: Tape and Reel Standard Reel Quantity: Typically 4000 pcs/reel #CommonPartLibrary #Filter #FerriteBead