Slide Switch, SPDT, On-On, Through Hole, OS Series, 100mA # OS102011MS2QN1 ## General Description The OS102011MS2QN1 is a miniature slide switch manufactured by C&K, designed for low-power signal switching and control applications in electronic equipment. The switch features a compact mechanical design, reliable contact performance, and through-hole mounting configuration, making it suitable for embedded systems, industrial controls, instrumentation, telecommunications equipment, consumer electronics, and portable devices. Its robust construction ensures dependable operation throughout repeated switching cycles while maintaining stable electrical performance. The device is commonly utilized for mode selection, power control, configuration settings, and user-interface functions within electronic assemblies. ## Key Features ### Mechanical Characteristics * Miniature slide switch construction * Through-hole PCB mounting * Compact form factor * Durable actuator mechanism * Positive switching action * Designed for repeated mechanical operation ### Switching Characteristics * Maintained-contact operation * Reliable position retention * Low-force actuation * Stable contact engagement * Suitable for signal and control switching applications ### Electrical Characteristics * Low contact resistance * Reliable signal transmission * Stable switching performance * Suitable for low-current and low-voltage circuits * Consistent electrical operation throughout service life ### Contact System * High-reliability contact materials * Corrosion-resistant contact surfaces * Long operational durability * Dependable electrical continuity ### Material Construction * High-strength thermoplastic housing * Industrial-grade metallic contacts * Durable actuator assembly * RoHS-compliant materials ### Environmental Characteristics * Suitable for commercial and industrial electronic equipment * Resistant to mechanical wear * Reliable performance under normal operating environments * Designed for long-term service reliability ### Application Areas * Embedded Systems * Industrial Control Equipment * Consumer Electronics * Test and Measurement Instruments * Communication Devices * Medical Electronics * Power Control Circuits * User Interface Controls * Configuration and Mode Selection Functions * Electronic Development Platforms ### Compliance * RoHS Compliant * Lead-Free Compatible * Industrial-Grade Switching Component ## Manufacturer C&K ## Product Family OS Series Miniature Slide Switches #OS102011MS2QN1 #CKSwitches #SlideSwitch #MiniatureSwitch #ElectronicSwitch #PCBSwitch #EmbeddedSystems #IndustrialElectronics #ControlSystems #ConsumerElectronics #HardwareDesign #ElectronicsEngineering #SignalSwitching #PCBAssembly #ElectronicComponents #commonpartslibrary #switch #slide #spdt

RF ANTENNA Bluetooth, Wi-Fi, WLAN, Zigbee™ Ceramic Patch Solder Surface Mount The SWLP.2450.10.4.A.02 specification defines the engineering requirements for a surface-mount radio frequency antenna designed for wireless communication applications operating within the 2.4 GHz frequency band. This specification establishes the functional, electrical, mechanical, environmental, and quality requirements necessary to ensure efficient RF transmission and reception, stable antenna performance, and long-term operational reliability in embedded electronic systems. The antenna is intended for use in wireless communication devices supporting technologies such as Bluetooth, Wi-Fi, Zigbee, Thread, and other 2.4 GHz ISM band protocols. It is optimized for compact PCB integration while providing efficient radiation characteristics, stable impedance matching, and dependable performance in space-constrained electronic products including IoT devices, industrial controllers, consumer electronics, and smart sensing platforms. Engineering Requirements The antenna shall be manufactured using qualified conductive and dielectric materials with controlled production processes to ensure consistent RF performance, mechanical durability, and long-term reliability. The construction shall maintain stable electrical characteristics throughout the specified operating temperature and environmental conditions. Electrical characteristics shall provide efficient radiation efficiency, stable impedance matching, low return loss, and reliable signal transmission and reception across the intended operating frequency range. The antenna shall maintain consistent performance when integrated according to the recommended PCB layout and grounding practices. The RF structure shall minimize insertion losses and support reliable wireless communication while maintaining acceptable gain, bandwidth, and radiation pattern characteristics. The antenna shall exhibit stable performance under normal operating conditions without significant degradation caused by thermal variation or environmental exposure. Mechanical construction shall be suitable for automated surface-mount assembly and compatible with standard solder reflow manufacturing processes. The package shall withstand vibration, thermal cycling, mechanical handling, and environmental stress without degradation of electrical or structural performance. Workmanship shall be free from defects including cracks, contamination, 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, impedance matching recommendations, 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 #RFAntenna #WirelessCommunication #Antenna #Bluetooth #WiFi #IoT #EmbeddedSystems #QualityAssurance #EngineeringDocumentation

MAX-M10 RF Receiver BeiDou, Galileo, GLONASS, GPS, GNSS 1.561GHz, 1.575GHz, 1.602GHz -167dBm 921.6kbps Not Included Module The MAX-M10S-00B is a professional-grade, ultra-low-power GNSS positioning module from u-blox based on the u-blox M10 platform. It is designed for battery-powered applications such as asset trackers, wearables, IoT devices, and navigation systems. The module supports simultaneous reception of multiple GNSS constellations, providing high positioning availability, fast acquisition times, and excellent sensitivity even in challenging urban or weak-signal environments. It integrates a TCXO, LNA, and SAW filter to improve RF performance while maintaining very low power consumption. Key Features Multi-constellation GNSS receiver: GPS Galileo GLONASS BeiDou QZSS SBAS support (WAAS, EGNOS, MSAS, GAGAN) Concurrent tracking of up to four GNSS constellations for improved position availability and accuracy. Ultra-low power consumption: Approximately 25 mW in continuous tracking mode, making it ideal for battery-powered devices. High RF sensitivity: Tracking sensitivity up to −167 dBm for reliable operation in weak-signal conditions. High positioning accuracy: Typical position accuracy of approximately 1.5 m CEP under suitable conditions. Navigation update rate: Up to 10 Hz for responsive tracking applications. Integrated RF front-end: Built-in LNA (Low Noise Amplifier) Built-in SAW filter Integrated TCXO for stable operation. Supports Assisted GNSS services: AssistNow Online AssistNow Offline AssistNow Autonomous CloudLocate support for low-power IoT positioning. Communication interfaces: UART I²C NMEA and UBX protocols supported. Wide operating temperature range: −40°C to +85°C. Supply voltage: 1.76 V to 3.6 V. Typical Applications Asset tracking devices Wearable electronics Fleet management systems Industrial IoT Smart meters Drone and robotics navigation Personal navigation devices Timing and synchronization systems Package Information Package Type: Surface-mount LCC module Dimensions: 9.7 mm × 10.1 mm × 2.5 mm (typical module size) #Commonpartslibrary #RF #Wireless #RFreceivers #MAXM10S #uBlox #GNSS #GPS #Galileo #GLONASS #BeiDou #QZSS #NavigationModule #GNSSModule #GPSTracking #AssetTracking #IoT #IndustrialIoT #WearableTech #FleetManagement #DroneNavigation #EmbeddedSystems #ElectronicsDesign #PCBDesign #HardwareEngineering #LowPowerDesign #LocationTracking #Geolocation #RFDesign #LNA #SMTModule

High-Voltage SPI Digital Potentiometer – Single-channel 8-bit digital potentiometer for programmable gain control, industrial automation, instrumentation, audio equipment, sensor calibration, power supplies, and embedded analog signal conditioning. Features 50 kΩ nominal resistance with 256 wiper positions (8-bit resolution), a linear taper, and an SPI serial interface for precise digital control. Supports separate digital and analog supply rails, with a digital supply of 1.8 V to 5.5 V and an analog supply up to 36 V (10 V to 36 V single supply or ±5 V to ±18 V dual supply), making it suitable for high-voltage analog applications. Includes 145 Ω typical wiper resistance, 100 ppm/°C temperature coefficient, volatile memory, shutdown capability, and AEC-Q100 qualification for high-reliability environments. Operates over a −40°C to +125°C temperature range and is housed in a 14-pin TSSOP package. #Microchip #MCP41HV51503EST #MCP41HV51 #DigitalPotentiometer #SPIPotentiometer #ProgrammableResistor #HighVoltage #AnalogControl #SignalConditioning #IndustrialElectronics #AECQ100 #EmbeddedSystems

MOSFET Output Solid-State Relay (PhotoMOS® Relay) – Single-pole normally open (1 Form A) solid-state relay with a MOSFET output for low-level signal switching and isolation. Provides 3750 Vrms input-to-output isolation, supports 60 V maximum load voltage, 0.4 A continuous load current, and 2.5 Ω maximum on-state resistance. Features an LED input with 3 mA maximum operate current, 1 ms maximum turn-on/turn-off time, 100 pF typical output capacitance, and is housed in a 4-pin SOP surface-mount package. Operates over a −40°C to +85°C temperature range. #Aratas #G3VM201AY1 #SolidStateRelay #PhotoMOS #MOSFETRelay #SSR #OpticallyIsolatedRelay #SignalSwitch #1FormA #SOP4 #SurfaceMount #EmbeddedSystems

Sub-GHz Wireless Microcontroller – Ultra-low-power Sub-GHz wireless microcontroller integrating a 64 MHz Arm® Cortex®-M0+ core with an RF transceiver for LPWAN, smart metering, industrial IoT, building automation, asset tracking, and wireless sensor networks. Features 128 KB Flash, 32 KB SRAM, and supports Sub-GHz operation from 413–479 MHz and 826–958 MHz (including regional ISM bands), with up to +20 dBm transmit power, −132 dBm receiver sensitivity, and data rates up to 600 kbps. Supports Sigfox, KNX RF, IEEE 802.15.4g, Mioty, and proprietary wireless protocols using 2-FSK, 2-GFSK, 4-FSK, 4-GFSK, ASK, OOK, DBPSK, and DSSS modulation. Operates from a 1.7 V to 3.6 V supply and includes 17 GPIOs, 12-bit ADC, timers, DMA, SPI, I²C, UART/USART, I²S, IrDA, PWM, watchdog, AES hardware accelerator, true random number generator (TRNG), and low-power wake-up receiver. Specified for operation over a −40°C to +105°C temperature range and housed in a 32-pin VFQFPN (5 × 5 mm) package. #STMicroelectronics #STM32WL33KBV7 #STM32WL33 #SubGHzMCU #WirelessMCU #CortexM0Plus #LPWAN #Sigfox #KNXRF #IEEE802154g #Mioty #IoT #EmbeddedSystems

Ultra-Low-Power Omnipolar Hall-Effect Switch – Digital omnipolar Hall-effect switch optimized for lid/door detection, proximity sensing, magnetic position detection, industrial controls, consumer electronics, and battery-powered embedded systems. Operates from a 1.65 V to 5.5 V supply with an ultra-low 3 µA maximum supply current, making it ideal for low-power applications. Features a push-pull digital output, omnipolar operation (responds to either north or south magnetic poles), sleep mode, and high magnetic sensitivity with ±3 mT typical operate point and ±0.8 mT typical release point. Supports up to 5 mA output current, provides built-in hysteresis for noise immunity, and operates over a −40°C to +125°C temperature range. Housed in a compact 3-pin SOT-23 (DBZ) surface-mount package. #TexasInstruments #TMAG5231C1DQDBZR #TMAG5231 #HallEffectSensor #OmnipolarSwitch #MagneticSensor #PositionSensor #ProximitySensor #LowPower #BatteryPowered #SOT23 #EmbeddedSystems

0.5 mOhms ±1% 5W Chip Resistor Nonstandard Automotive AEC-Q200, Current Sense Metal Element # Engineering Specification ## Product Name CSS4J-4026R-L500F ## General Description CSS4J-4026R-L500F is a precision four-terminal Kelvin current sense shunt resistor designed for accurate current measurement in high-performance electronic and power management systems. The device is intended for use in applications requiring low resistance sensing, high measurement accuracy, and stable thermal performance under varying electrical loads. The component utilizes a metal element resistive structure optimized for minimal resistance drift, reduced temperature effects, and consistent long-term stability. Its four-terminal Kelvin configuration separates current flow and voltage sensing paths, enabling improved measurement accuracy by eliminating errors caused by PCB trace and connection resistance. The device is widely used in power conversion systems, battery monitoring systems, motor control circuits, and industrial power electronics where precise current feedback is essential for control, protection, and monitoring functions. Its surface-mount construction supports compact PCB layouts and automated assembly processes while maintaining robust mechanical and electrical reliability. The design emphasizes efficient heat dissipation, stable electrical characteristics, and compatibility with demanding industrial and automotive environments. It is suitable for integration into systems requiring continuous current monitoring and high measurement fidelity. ## Functional Requirements ### Current Measurement The device shall provide accurate current sensing through a low-resistance conductive path designed for minimal measurement error. ### Kelvin Sensing Operation The device shall support four-terminal Kelvin sensing to improve measurement accuracy by separating current and voltage sensing paths. ### Signal Stability The device shall maintain stable sensing characteristics under varying load and thermal conditions. ### System Integration The component shall support integration into power electronics and embedded control systems requiring precise current feedback. ## Electrical Requirements ### Low Resistance Operation The device shall exhibit very low resistance to minimize power loss and maintain measurement accuracy. ### Thermal Stability The resistor shall maintain consistent electrical behavior under elevated operating temperatures and thermal cycling conditions. ### Power Handling The device shall support operation in high-current environments typical of power conversion and motor control systems. ### Measurement Accuracy The design shall support precise voltage drop measurement proportional to current flow for control and monitoring applications. ## Mechanical Requirements ### Surface Mount Construction The device shall be provided in a surface mount package suitable for automated PCB assembly. ### Structural Integrity The component shall maintain mechanical stability during assembly, operation, and thermal cycling. ### PCB Integration The device shall support direct integration into multilayer printed circuit board designs with optimized current path layout. ## Environmental Requirements ### Operating Conditions The device shall operate reliably under industrial and automotive environmental conditions. ### Thermal Performance The component shall maintain performance stability under continuous electrical loading and heat generation. ### Storage and Handling The device shall maintain physical and electrical integrity during storage, transport, and handling procedures. ## Quality Requirements ### Reliability The device shall provide long-term stability in resistance value and sensing accuracy under continuous operation. ### Verification Electrical, thermal, and mechanical characteristics shall be validated through appropriate testing and qualification procedures. ### Compliance The product shall conform to applicable standards for current sensing resistors used in industrial and automotive electronics. ## Documentation Requirements Technical documentation shall include application guidelines, layout recommendations for Kelvin sensing, thermal considerations, electrical characteristics, and integration practices for power electronics systems. ## Classification Tags #CSS4J4026RL500F #CurrentSenseResistor #ShuntResistor #KelvinSensing #FourTerminalResistor #PowerElectronics #BatteryManagement #MotorControl #PowerSupplyDesign #AnalogSensing #ElectricalEngineering #PCBDesign #EmbeddedSystems #IndustrialElectronics #AutomotiveElectronics #CommonPartsLibrary #ComponentLibrary #EngineeringSpecification #TechnicalDocumentation #HighCurrentSensing #PrecisionMeasurement #CircuitDesign

Automotive H-Bridge DC Motor Driver IC – Fully integrated 40 V H-bridge motor driver with integrated power MOSFETs for brushed DC motors and one winding of a bipolar stepper motor. Operates from a 4 V to 40 V supply, delivers up to 5 A continuous output current, and features a PWM control interface with integrated current-sense output for motor monitoring. Includes an internal charge pump for high-side gate drive, low-RDS(on) MOSFETs, current regulation, undervoltage lockout (UVLO), overcurrent protection (OCP), thermal shutdown, and shoot-through protection. Qualified to AEC-Q100 Grade 1, operates over a −40°C to +125°C junction temperature range, and is housed in an 18-pin QFN (3 × 4 mm) wettable-flank package. #MonolithicPowerSystems #MPS #MPQ6612AGLEAEC1P #MPQ6612A #MotorDriver #HBridge #BrushedDCMotor #StepperMotor #CurrentSense #PWM #PowerMOSFET #AECQ100 #Automotive #EmbeddedSystems

Automotive Mini Blade Fuse Holder (PCB Mount) – Single-circuit PCB-mount fuse holder designed for automotive electronics, industrial equipment, power distribution boards, battery management systems, embedded controllers, and circuit protection applications. Manufactured by Keystone Electronics (Series MINI® 297), it accepts Miniature (ATM) blade fuses and is rated for 30 A and 500 V. Features a vertical through-hole PCB mounting, PC pin termination, brass contacts with tin plating for low contact resistance and reliable conductivity, and is UL recognized for safety. The compact design provides secure retention of 11.0 mm × 3.85 mm mini blade fuses, making it suitable for high-current PCB-based protection circuits in automotive and industrial environments. #KeystoneElectronics #3568 #MiniBladeFuseHolder #ATMFuseHolder #FuseHolder #CircuitProtection #PCBMount #ThroughHole #AutomotiveElectronics #IndustrialElectronics #PowerDistribution #EmbeddedSystems

1/1 Transceiver Half RS422, RS485 8-SOIC These devices have robust 3.3-V drivers and receivers in a small package for demanding industrial applications. The bus pins are robust to ESD events with high levels of protection to Human-Body Model and IEC Contact Discharge specifications. Each of these devices combines a differential driver and a differential receiver which operate from a single 3.3-V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire bus) communication. These devices feature a wide common-mode voltage range making the devices suitable for multi-point applications over long cable runs. These devices are characterized from –40°C to 125°C 1• Small-size VSSOP Packages Save Board Space, or SOIC for Drop-in Compatibility • Bus I/O Protection – >±15 kV HBM Protection – >±12 kV IEC 61000-4-2 Contact Discharge – >±4 kV IEC 61000-4-4 Fast Transient Burst • Extended Industrial Temperature Range –40°C to 125°C • Large Receiver Hysteresis (80 mV) for Noise Rejection • Low Unit-Loading Allows Over 200 Connected Nodes • Low Power Consumption – Low Standby Supply Current: < 2 µA – ICC < 1 mA Quiescent During Operation • 5-V Tolerant Logic Inputs Compatible With 3.3-V or 5-V Controllers • Signaling Rate Options Optimized for: 250 kbps, 20 Mbps, 50 Mbps • Glitch Free Power-Up and Power-Down Bus Inputs and Outputs 2 Applications • Factory Automation • Telecommunications Infrastructure • Motion Control #SN65HVD75D #RS485 #RS422 #Transceiver #TexasInstruments #IndustrialCommunication #FactoryAutomation #MotionControl #TelecomInfrastructure #ESDProtection #HalfDuplex #InterfaceIC #EmbeddedSystems #IndustrialElectronics #DataCommunication

PCB Shield Spring Contact – Ultra-small C-clip PCB spring contact for EMI/RFI grounding and shielding between a PCB and metal enclosure. Features a 1.5 A maximum current rating, 0.40 mm to 0.75 mm working height, gold-plated stainless steel contact, nickel underplate, side-protected design, and solder-mount attachment. Measures 2.7 mm × 1.0 mm × 1.1 mm and is specified for an operating temperature range of −40°C to +85°C. #TEConnectivity #22928383 #PCBSpringContact #ShieldFinger #EMIShielding #RFIShielding #GroundContact #SpringContact #GoldPlated #SurfaceMount #PCBHardware #EmbeddedSystems

Buck-Boost Switching Regulator IC Positive Adjustable (Fixed) 6.5V (11.5V) 1 Output 6A 22-PowerWFQFN The MAX25239/MAX25240 are small, synchronous, buck-boost converters with integrated H-bridge switches. These ICs provide a fixed-output regulation voltage and an externally adjustable output voltage in the 3V to 20V range with an input voltage above, below, or equal to the output regulation voltage. The ICs have typical 8.2A and 10A input current limit options and can support continuous load currents up to 6A depending on the input-to-output voltage ratio and operating frequency. It also has a wide input voltage range of 2V to 36V. The MAX25239/MAX25240 have three switching frequency options: 2.1MHz, 400kHz, and 200kHz. The 2.1MHz high switching frequency allows small external components and reduced output ripple, and guarantees no AM band interference, while the 400kHz or 200kHz switching frequency offers better efficiency and relieves the power consumption concern. The SYNC input allows three operation modes: skip mode with ultra-low quiescent current, forced fixed-frequency PWM operation, and synchronization to an external clock. The IC also includes spread-spectrum frequency modulation to minimize EMI interference. The MAX25239/MAX25240 feature a power-OK (POK) indicator, undervoltage lockout, overvoltage protection, cycle-by-cycle current limit, and thermal shutdown. The ICs are available in small, 4.25mm x 4.25mm x 0.75mm, 22-pin FC2QFN and 5.00mm x 5.00mm x 0.75mm, 18- pin FCQFN packages. Key Features Wide 2 V to 36 V input voltage range Synchronous buck-boost topology for seamless step-up and step-down conversion Delivers up to 6 A continuous output current Adjustable output voltage from 3 V to 20 V (device variant includes fixed output configuration options) High conversion efficiency with integrated low-RDS(ON) MOSFETs 400 kHz switching frequency with spread-spectrum option for reduced EMI Very low 95 µA quiescent current in standby and 10 µA shutdown current Integrated protection features including overvoltage, short-circuit, thermal shutdown, and undervoltage lockout (UVLO) Power-Good (PGOOD) output for power monitoring AEC-Q100 qualified for automotive applications Operating junction temperature range: −40°C to +150°C Compact 22-pin FC2QFN (4.25 × 4.25 mm) package #MAX25240AFFFVY #AnalogDevices #BuckBoostConverter #DCDCConverter #PowerManagement #AutomotiveElectronics #AECQ100 #SwitchingRegulator #EmbeddedSystems #AutomotivePower