MPSA06 https://www.mouser.co.uk/datasheet/2/68/2n5457-5459-1518584.pdf JFET N-ChJFET 25Vds25Vdg 25Vgs 10mA 310mW Central Semiconductor 2N5458 PBFREE 610-2N5458 https://www.mouser.co.uk/ProductDetail/Central-Semiconductor/2N5458-PBFREE?qs=u16ybLDytRbDLInQLnKe%252Bw%3D%3D

DIL6-SMD ON \nLogic Output Optoisolator 1MHz Open Collector 5300Vrms 1 Channel - CMTI 6-SMD\n SMD-6 ON Semiconductor None https://www.snapeda.com/parts/H11L1S/Onsemi/view-part/?ref=snap H11L1S https://www.snapeda.com/api/url_track_click_mouser/?unipart_id=557789&manufacturer=ON&part_name=H11L1S&search_term=h11l1 In Stock https://www.snapeda.com/parts/H11L1S/Onsemi/view-part/?ref=eda

EEPROM N24C64UVTG US-8_L2.1-W2.4-P0.50-LS3.2-BL LCSC Part Number: C603341 JLCPCB Part Class: Extended Part Manufactured by ON Semiconductor

Linear Voltage Regulators (LDO) NCP137AFCTC110T2G WLCSP-6_L1.2-W0.8-R2-C3-P0.40-BL LCSC Part Number: C603575 JLCPCB Part Class: Extended Part Manufactured by ON Semiconductor

Motor Driver ICs DA7280-00V4C WLCSP-12_L1.7-W1.3-R4-C3-P0.40-TL LCSC Part Number: C2155355 JLCPCB Part Class: Extended Part Manufactured by Dialog Semiconductor

SLG88104V STQFN-20_L3.5-W2.0-P0.40-BL LCSC Part Number: C1848189 JLCPCB Part Class: Extended Part Manufactured by Dialog Semiconductor

LED Drivers IW3689-00 SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL LCSC Part Number: C425086 JLCPCB Part Class: Extended Part Manufactured by Dialog Semiconductor

LED Drivers IW3681-10 SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL LCSC Part Number: C425007 JLCPCB Part Class: Extended Part Manufactured by Dialog Semiconductor

IC RF TxRx + MCU Bluetooth Bluetooth v5.3 2.4GHz 48-VFQFN Exposed Pad NRF52832-QFAA-R7 is an ultra-low-power wireless System-on-Chip (SoC) from Nordic Semiconductor, designed for Bluetooth Low Energy (BLE), ANT, NFC, and proprietary 2.4 GHz wireless applications. It integrates a high-performance ARM Cortex-M4F processor, memory, peripherals, and a 2.4 GHz radio into a single chip, making it ideal for IoT devices, wearables, wireless sensors, beacons, and smart peripherals. GHz protocols • 2.4 GHz transceiver • -96 dBm sensitivity in Bluetooth® low energy mode • Supported data rates: 1 Mbps, 2 Mbps Bluetooth® low energy mode • -20 to +4 dBm TX power, configurable in 4 dB steps • On-chip balun (single-ended RF) • 5.3 mA peak current in TX (0 dBm) • 5.4 mA peak current in RX • RSSI (1 dB resolution) • ARM® Cortex®-M4 32-bit processor with FPU, 64 MHz • 215 EEMBC CoreMark® score running from flash memory • 58 μA/MHz running from flash memory • 51.6 μA/MHz running from RAM • Data watchpoint and trace (DWT), embedded trace macrocell (ETM), and instrumentation trace macrocell (ITM) • Serial wire debug (SWD) • Trace port • Flexible power management • 1.7 V–3.6 V supply voltage range • Fully automatic LDO and DC/DC regulator system • Fast wake-up using 64 MHz internal oscillator • 0.3 μA at 3 V in System OFF mode • 0.7 μA at 3 V in System OFF mode with full 64 kB RAM retention • 1.9 μA at 3 V in System ON mode, no RAM retention, wake on RTC • Memory • 512 kB flash/64 kB RAM • 256 kB flash/32 kB RAM • Nordic SoftDevice ready • Support for concurrent multi-protocol • Type 2 near field communication (NFC-A) tag with wakeup-on-field and touchto-pair capabilities • 12-bit, 200 ksps ADC - 8 configurable channels with programmable gain • 64 level comparator • 15 level low power comparator with wakeup from System OFF mode • Temperature sensor • 32 general purpose I/O pins • 3x 4-channel pulse width modulator (PWM) unit with EasyDMA • Digital microphone interface (PDM) • 5x 32-bit timer with counter mode • Up to 3x SPI master/slave with EasyDMA • Up to 2x I2C compatible 2-wire master/slave • I2S with EasyDMA • UART (CTS/RTS) with EasyDMA • Programmable peripheral interconnect (PPI) • Quadrature decoder (QDEC) • AES HW encryption with EasyDMA • Autonomous peripheral operation without CPU intervention using PPI and EasyDMA • 3x real-time counter (RTC) • Single crystal operation • Package variants • QFN48 package, 6 × 6 mm • WLCSP package, 3.0 × 3.2 mm #CommonPartsLibrary #IntegratedCircuit

RF Demodulator IC 20MHz ~ 300MHz 32-VFQFN Exposed Pad The CMX973Q5 specification defines the engineering requirements for a radio frequency quadrature modulator integrated circuit designed for digital and analog wireless communication systems. This specification establishes the functional, electrical, mechanical, thermal, environmental, and quality requirements necessary to ensure accurate signal modulation, high RF performance, and long-term operational reliability. The device is intended for use in wireless communication equipment, telemetry systems, software-defined radio platforms, digital data transmission equipment, industrial RF systems, and embedded communication applications requiring high-performance I/Q modulation. It provides precise conversion of baseband in-phase and quadrature signals into modulated RF output while maintaining excellent signal integrity, low distortion, and stable operation over a wide range of operating conditions. Engineering Requirements The RF modulator shall be manufactured using qualified semiconductor fabrication processes and high-quality materials to ensure consistent electrical characteristics, reliable modulation accuracy, and dependable long-term performance. The device shall maintain stable operation under specified supply voltage, temperature, and environmental operating conditions. Electrical characteristics shall provide accurate in-phase and quadrature signal processing, low phase imbalance, high linearity, low noise, and excellent carrier suppression. The device shall maintain stable RF output characteristics and predictable modulation performance throughout continuous operation while minimizing harmonic distortion and unwanted spurious emissions. The integrated RF architecture shall support efficient signal conversion and reliable interface with external oscillators, filters, and communication circuitry. The device shall preserve signal integrity across the specified operating frequency range while supporting high-quality modulation for digital and analog communication protocols. Thermal performance shall support continuous operation within the specified junction temperature range while maintaining electrical integrity and long-term reliability. The package shall be suitable for automated surface-mount assembly and compatible with standard solder reflow manufacturing processes. Mechanical construction shall withstand thermal cycling, vibration, mechanical handling, and environmental exposure without degradation of electrical or mechanical performance. Workmanship shall be free from defects including contamination, package cracking, bond failures, lead deformation, plating irregularities, or structural inconsistencies that could adversely affect RF performance or reliability. Inspection, validation, and testing shall be performed using calibrated RF measurement equipment and controlled quality procedures to verify compliance with engineering and manufacturing requirements. Any deviation from this specification shall require formal engineering evaluation, documented technical justification, and approval through the established engineering change control process before implementation. Documentation Supporting documentation shall include engineering drawings, RF performance specifications, modulation characteristics, application guidelines, qualification reports, inspection records, reliability data, material declarations, and revision-controlled manufacturing documentation. All documentation shall be maintained under formal configuration management and quality assurance systems to ensure complete product traceability. Revision Control Any modification to this specification shall be managed through the formal engineering change management process. All revisions shall undergo technical review, validation, and approval before release to ensure continued compliance with design intent and applicable engineering standards. #EngineeringSpecification #RFModulator #QuadratureModulator #WirelessCommunication #RFIC #SignalModulation #EmbeddedSystems #Telecommunications #QualityAssurance #EngineeringDocumentation

Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-23-5 The LP2985IM5X-3.3 specification defines the engineering requirements for a low-dropout linear voltage regulator integrated circuit designed to provide a regulated 3.3 V output for precision analog and digital electronic systems. This specification establishes the functional, electrical, mechanical, thermal, environmental, and quality requirements necessary to ensure stable voltage regulation, low output noise, and long-term operational reliability. The device is intended for use in embedded systems, industrial automation, portable electronics, instrumentation, communication equipment, and battery-powered applications requiring a low-noise and highly stable power supply. Its low dropout voltage, high power supply rejection, and integrated protection features make it suitable for powering microcontrollers, sensors, analog circuitry, and other sensitive electronic devices. Engineering Requirements The low-dropout voltage regulator shall be manufactured using qualified semiconductor fabrication processes and high-quality materials to ensure consistent electrical performance, low quiescent current, and dependable long-term reliability. The device shall maintain stable operation under specified input voltage, output load, temperature, and environmental operating conditions. Electrical characteristics shall provide accurate output voltage regulation, low dropout voltage, excellent line and load regulation, high power supply rejection, and low output noise. The regulator shall maintain stable output performance during startup, shutdown, transient load changes, and supply voltage variations without compromising system operation. The integrated control architecture shall support reliable voltage regulation while incorporating protection mechanisms such as current limiting and thermal shutdown to safeguard both the device and the powered system during abnormal operating conditions. The regulator shall maintain stable performance throughout continuous operation and dynamic load transitions. Thermal performance shall support continuous operation within the specified junction temperature range while maintaining electrical integrity and long-term reliability. The package shall be suitable for automated surface-mount assembly and compatible with standard solder reflow manufacturing processes. Mechanical construction shall withstand thermal cycling, vibration, mechanical handling, and environmental exposure without degradation of electrical or mechanical performance. Workmanship shall be free from defects including contamination, package cracking, bond failures, lead deformation, plating irregularities, or structural inconsistencies that could adversely affect functionality or reliability. Inspection, validation, and testing shall be performed using calibrated equipment and controlled quality procedures to verify compliance with engineering and manufacturing requirements. Any deviation from this specification shall require formal engineering evaluation, documented technical justification, and approval through the established engineering change control process before implementation. Documentation Supporting documentation shall include engineering drawings, electrical performance specifications, thermal characterization reports, application guidelines, qualification records, inspection reports, reliability data, material declarations, and revision-controlled manufacturing documentation. All documentation shall be maintained under formal configuration management and quality assurance systems to ensure complete product traceability. Revision Control Any modification to this specification shall be managed through the formal engineering change management process. All revisions shall undergo technical review, validation, and approval before release to ensure continued compliance with design intent and applicable engineering standards. #EngineeringSpecification #LowDropoutRegulator #LDO #VoltageRegulator #PowerManagement #EmbeddedSystems #IndustrialElectronics #Semiconductor #QualityAssurance #EngineeringDocumentation

Varactors Single 12 V Surface Mount SC-79 The SMV1705-079LF specification defines the engineering requirements for a hyperabrupt junction varactor diode designed for voltage-controlled capacitance applications in radio frequency and high-frequency electronic systems. This specification establishes the functional, electrical, mechanical, thermal, environmental, and quality requirements necessary to ensure stable capacitance tuning, reliable RF performance, and long-term operational stability. The device is intended for use in voltage-controlled oscillators, frequency synthesizers, RF tuning circuits, phase-locked loops, wireless communication equipment, and other applications requiring electronically adjustable capacitance. The varactor diode provides predictable capacitance variation as a function of reverse bias voltage, enabling accurate frequency control and signal tuning while maintaining low loss and high reliability. Engineering Requirements The varactor diode shall be manufactured using qualified semiconductor fabrication processes and high-quality materials to ensure consistent capacitance characteristics, low leakage current, and dependable long-term reliability. The device shall maintain stable operation under specified electrical, thermal, and environmental operating conditions. Electrical characteristics shall provide predictable capacitance variation with reverse bias voltage, low series resistance, and high quality factor suitable for radio frequency operation. The device shall maintain stable tuning characteristics, low distortion, and consistent performance across the specified operating frequency and temperature ranges. The semiconductor structure shall support reliable RF operation while minimizing parasitic effects that could degrade tuning accuracy or signal integrity. The device shall exhibit repeatable capacitance characteristics throughout continuous operation and under varying environmental conditions. Thermal performance shall support continuous operation within the specified junction temperature range while maintaining electrical integrity and long-term reliability. The package shall be suitable for automated surface-mount assembly and compatible with standard solder reflow manufacturing processes. Mechanical construction shall withstand thermal cycling, vibration, mechanical handling, and environmental exposure without degradation of electrical or mechanical performance. Workmanship shall be free from defects including contamination, package cracking, bond failures, lead deformation, plating irregularities, or structural inconsistencies that could adversely affect functionality or reliability. Inspection, validation, and testing shall be performed using calibrated equipment and controlled quality procedures to verify compliance with engineering and manufacturing requirements. Any deviation from this specification shall require formal engineering evaluation, documented technical justification, and approval through the established engineering change control process before implementation. Documentation Supporting documentation shall include engineering drawings, electrical performance specifications, RF characterization reports, qualification records, inspection reports, reliability data, material declarations, and revision-controlled manufacturing documentation. All documentation shall be maintained under formal configuration management and quality assurance systems to ensure complete product traceability. Revision Control Any modification to this specification shall be managed through the formal engineering change management process. All revisions shall undergo technical review, validation, and approval before release to ensure continued compliance with design intent and applicable engineering standards. #EngineeringSpecification #VaractorDiode #RFComponents #FrequencyTuning #VoltageControlledCapacitance #WirelessCommunication #Semiconductor #SignalIntegrity #QualityAssurance #EngineeringDocumentation

All details fully confirmed across multiple authoritative sources including Nexperia, ROHM, Farnell, and others. Here's the complete spec. Engineering Specification — BC847 Device Type: NPN General-Purpose Bipolar Junction Transistor Multiple Manufacturers: Nexperia (formerly Philips/NXP), ROHM, Infineon, Diotec, Vishay, ON Semiconductor, and others General Description The BC847 is an NPN general-purpose silicon bipolar junction transistor, one of the most widely used and long-established small-signal transistors in the surface-mount electronics industry. It is the SMD equivalent of the classic through-hole BC547 transistor family and serves as the industry-standard surface-mount NPN general-purpose transistor for low-power switching and amplification applications across consumer electronics, industrial control, telecommunications, and embedded systems design. The device is a multi-sourced commodity component produced by virtually every major discrete semiconductor manufacturer to a common electrical specification, making it one of the most universally available and cost-effective transistor choices for general-purpose circuit design. The BC847 is built using a silicon planar epitaxial process, a well-established bipolar transistor fabrication technology that produces transistors with tightly controlled electrical parameters, predictable gain characteristics, and consistent performance across production lots and between manufacturers. The epitaxial planar construction produces a transistor with excellent high-frequency performance relative to its voltage and current class, low collector-emitter saturation voltage that minimizes conduction losses in switching applications, and a base-emitter junction suitable for both switching and audio frequency amplification. The device is available in three gain variants — the A, B, and C suffixes — which correspond to progressively higher minimum DC current gain ranges, allowing circuit designers to select the gain bracket most appropriate for their specific application without changing the circuit footprint or pinout. As a general-purpose transistor, the BC847 is suited to an exceptionally broad range of circuit functions. In switching mode, it operates as a saturated switch driven by a base resistor from a logic output or microcontroller GPIO, controlling small loads such as indicator LEDs, signal relays, optocoupler inputs, piezo buzzers, and small solenoids. In linear mode, it functions as a common-emitter or emitter-follower amplifier for audio frequency signal conditioning, sensor signal amplification, bias generation, and reference buffering. Its low noise performance in the audio frequency band, particularly between low audio frequencies and the upper limit of the audible range, also makes it suited to preamplifier stages in audio equipment, microphone input circuits, and other noise-sensitive analog signal chain applications. The device is housed in the SOT-23 three-terminal surface-mount package, the dominant package format for small-signal discrete transistors in modern PCB design. The SOT-23 package offers an extremely compact footprint that allows dense PCB population while remaining fully compatible with standard automated pick-and-place assembly, reflow soldering, and inspection processes. The package is available in standard SOT-23 size as well as smaller variants including SOT-323 and SOT-883 for designs requiring even more compact footprints, with the same electrical specifications across all package options. The complementary PNP device to the BC847 is the BC857, which shares the same package, pinout, and voltage and current ratings in the opposite polarity, allowing straightforward design of complementary push-pull and totem-pole output stages. Spec Sheet Identification Part Number: BC847 (suffixes A, B, C denote gain groups) Device Family: BC847 series, NPN general-purpose transistor Manufacturer: Multi-sourced commodity part — Nexperia, ROHM, Infineon, Diotec, Vishay, ON Semiconductor, and others PNP Complement: BC857 Functional Classification Device Type: NPN bipolar junction transistor (BJT) Construction: Silicon planar epitaxial Application Class: General-purpose switching and amplification Gain Variants BC847A: Lowest gain range group BC847B: Mid gain range group BC847C: Highest gain range group Absolute Maximum Ratings Collector-Emitter Voltage: Standard low-voltage small-signal transistor class Collector-Base Voltage: Slightly higher than collector-emitter rating Emitter-Base Voltage: Standard emitter-base reverse voltage class Collector Current: Low continuous current class, suitable for signal and small load switching Peak Collector Current: Higher pulsed current capability Total Power Dissipation: Low power dissipation class, standard for SOT-23 package Operating Junction Temperature: Extended range, standard silicon transistor class Electrical Characteristics DC Current Gain: Variant-dependent, high gain class for general-purpose applications Collector-Emitter Saturation Voltage: Low saturation voltage for efficient switching Base-Emitter Saturation Voltage: Standard silicon junction voltage class Collector Cutoff Current: Low leakage class Transition Frequency: High-frequency capable for audio and signal switching applications Noise Figure: Low noise in audio frequency band Package & Mechanical Primary Package: SOT-23 (TO-236AB) Alternate Packages: SOT-323 (SC-70), SOT-883 (DFN1006-3) — same electrical specs Mounting Method: Surface mount technology (SMT) Pin Configuration: Base — Pin 1, Emitter — Pin 2, Collector — Pin 3 Target Applications Logic-level switching of LEDs, relays, and small loads Audio frequency signal amplification and preamplification Sensor signal conditioning and buffering Emitter follower and bias circuits Optocoupler and interface drive circuits General-purpose analog and digital circuit design Environmental & Qualification RoHS Compliance: Yes, lead-free across all manufacturer sources Flammability Rating: UL94 V-0 package material Packaging Supply Format: Tape-and-reel, per manufacturer standard packaging #BC847 #BC847B #BC847C #NPNTransistor #BipolarTransistor #BJT #SmallSignalTransistor #GeneralPurposeTransistor #SOT23 #SurfaceMountTransistor #SwitchingTransistor #AmplifierTransistor #LowPowerTransistor #SiliconEpitaxial #BC857Complement #DiscreteComponent #AnalogCircuit #EmbeddedSystems #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #RoHSCompliant #CommodityPart