# DF40C-100DS-0.4V(51) ## General Description The DF40C-100DS-0.4V(51) is a high-density board-to-board mezzanine connector manufactured by Hirose Electric. It belongs to the DF40 series of ultra-fine pitch connectors designed for compact electronic systems requiring reliable signal transmission and high interconnection density. The connector features a precision contact system, low-profile construction, and surface-mount configuration, making it suitable for embedded systems, industrial electronics, communication equipment, medical devices, portable electronics, computing platforms, and advanced IoT products. Its robust mechanical design ensures secure mating, excellent signal integrity, and dependable long-term performance in applications where board space is limited and connection reliability is critical. ## Key Features ### Connector Architecture * Board-to-board mezzanine connector design * High-density interconnection capability * Fine-pitch contact arrangement * Precision mating structure * Low-profile configuration * Optimized for compact electronic assemblies ### Electrical Characteristics * Reliable signal transmission * Low contact resistance * Stable electrical performance * High signal integrity capability * Suitable for high-speed digital interfaces * Consistent connection reliability ### Mechanical Characteristics * Surface-mount mounting configuration * Precision alignment structure * Secure mating retention mechanism * Compact footprint design * High-density PCB integration support * Automated assembly compatible ### Contact System * High-reliability contact construction * Gold-plated contact surfaces * Corrosion-resistant interface * Enhanced mating durability * Reliable electrical continuity * Stable long-term performance ### Material Construction * High-strength thermoplastic housing * Precision metal contact system * RoHS-compliant materials * Lead-free compatible construction * Industrial-grade manufacturing quality ### Environmental Characteristics * Long operational service life * Suitable for industrial and commercial applications * Reliable performance under continuous operation * Resistant to mechanical stress and vibration * Stable operation across standard environmental conditions ### Application Areas * Embedded Computing Systems * Industrial Automation Equipment * Medical Electronics * Communication Devices * Portable Electronic Products * Human-Machine Interfaces * Consumer Electronics * Data Acquisition Systems * IoT Devices * Wireless Communication Modules * Control Systems * High-Density PCB Assemblies ### Compliance * RoHS Compliant * Lead-Free Compatible * High-Density Interconnect Solution ## Manufacturer Hirose Electric Co., Ltd. ## Product Family DF40 Series Board-to-Board Connectors #DF40C100DS04V51 #Hirose #DF40Series #BoardToBoardConnector #MezzanineConnector #HighDensityConnector #PCBConnector #EmbeddedSystems #IndustrialElectronics #CommunicationEquipment #MedicalElectronics #IoTDevices #ElectronicsEngineering #PCBDesign #SurfaceMountConnector

1.5A USB 2.0 1 Bend-in 4P Female -20℃~+70℃ Type-B Plugin USB Connectors ROHS USB-B10-BRW USB-B-TH_USB-B10-BRW LCSC Part Number: C720549 JLCPCB Part Class: Extended Part Manufactured by XUNPU(讯普) USB Type-B female through-hole receptacle XUNPU USB-B10-BRW USB 2.0 Type-B female connector, right-angle through-hole/DIP mounting, 4 contacts, 1 port, 1.5A current rating, 30VDC voltage rating, operating temperature -20°C to +70°C, white housing, RoHS compliant, suitable for USB device ports, embedded electronics, industrial equipment and PCB-mounted USB interfaces. USB-B10-BRW, XUNPU USB-B10-BRW, USB Type-B connector, USB-B female connector, USB 2.0 Type-B socket, right angle USB-B connector, through hole USB connector, DIP USB-B connector, 4 pin USB-B connector, C720549 #USBB10BRW #XUNPU #USBConnector #USBTypeB #USBBFemale #USB20Connector #RightAngleConnector #ThroughHoleConnector #DIPConnector #PCBConnector

Female Headers KH-1.27FH-2X2P-H4.3-SMT HDR-SMD_4P-P1.27-V-F-R2-C2-LS4.8-1 LCSC Part Number: C2938395 JLCPCB Part Class: Extended Part Manufactured by kinghelm(金航标) Kinghelm KH-1.27FH-2X2P-H4.3-SMT, dual-row female header connector, 2x2 positions (4 contacts), 1.27mm pitch, surface mount (SMT), phosphor bronze contacts with gold flash plating, polyester UL94V-0 insulator, rated current 1A, withstand voltage 500VAC, insulation resistance 1000MΩ minimum, contact resistance 20mΩ maximum, operating temperature -40°C to +105°C, connector height 4.3mm, suitable for board-to-board interconnection in compact electronic devices. Search Keywords: KH-1.27FH-2X2P-H4.3-SMT, Kinghelm KH-1.27FH-2X2P-H4.3-SMT, 1.27mm female header SMT, dual row female header 2x2, SMT socket connector 1.27mm, board to board connector 1.27mm, gold flash female header, Kinghelm female header, 4 pin SMT socket, 2x2 female header connector Hashtags: #KH127FH2X2PH43SMT #Kinghelm #FemaleHeader #SMTConnector #BoardToBoardConnector #127mmPitch #DualRowHeader #SocketConnector #GoldFlashContacts #PhosphorBronze #UL94V0 #SMTSocket #PCBConnector #CompactConnector #2x2Header

TSW-123-07-G-D-LL HDR-TH_TSW-123-15-L-D LCSC Part Number: C5807494 JLCPCB Part Class: Extended Part Manufactured by SAMTEC Samtec TSW series 0.025" (0.64mm) square post terminal strip/header, through-hole PCB connector available in single, double and triple row configurations, 2.54mm (0.100") or 2.00mm (0.079") pitch options, gold or tin plated contacts, precision machined square pins, customizable pin counts and stack heights, designed for board-to-board, wire-to-board and prototyping applications in industrial, embedded and electronic systems. Search Keywords: TSW terminal strip, Samtec TSW, TSW series header, square post header, 0.025 square post, 0.64mm square pin header, Samtec through hole header, 2.54mm pin header, 0.100 inch header, PCB terminal strip, board to board connector, through hole connector, Samtec TSW datasheet, pin header connector Hashtags: #SamtecTSW #TSWSeries #TerminalStrip #PinHeader #SquarePostHeader #ThroughHoleHeader #PCBConnector #BoardToBoardConnector #254mmPitch #100MilHeader #SamtecConnector #EmbeddedHardware #PrototypeConnector #ThroughHoleConnector

SIM Card Connectors 1040310811 SIM-SMD_8P-1040310811 LCSC Part Number: C585350 JLCPCB Part Class: Extended Part Manufactured by MOLEX Molex 104031-0811 microSD card socket connector, push-pull type, surface mount (SMT), 8-position microSD memory card receptacle with card-detect switch, 1.42mm profile height, liquid crystal polymer (LCP) housing UL94V-0, phosphor bronze contacts with gold plating, stainless steel shell, designed for removable microSD storage applications in embedded systems, IoT devices, consumer electronics and portable equipment. Search Keywords: 104031-0811, Molex 104031-0811, Molex microSD socket, microSD card connector SMT, push pull microSD connector, microSD card receptacle, card detect microSD socket, 8 pin microSD connector, low profile microSD socket, SMT memory card connector, Molex 104031 series, microSD holder with card detect Hashtags: #1040310811 #Molex1040310811 #Molex #MicroSDSocket #MicroSDConnector #MemoryCardConnector #PushPullSocket #CardDetectSwitch #SMTConnector #EmbeddedStorage #MicroSDHolder #LCPHousing #PortableElectronics #IoTHardware #PCBConnector

RF Connectors / Coaxial Connectors KH-BNC75-3511 ANT-TH_KH-BNC75-3511 LCSC Part Number: C2837588 JLCPCB Part Class: Extended Part Manufactured by kinghelm(金航标) Kinghelm KH-801-0039 PCB mount BNC female jack connector, 75Ω characteristic impedance, right-angle through-hole mounting, 1/2-28 UNEF-2A threaded interface, frequency range up to 3GHz, VSWR ≤1.3, 500Vrms working voltage, insulation resistance ≥5000MΩ, operating temperature range -55°C to +155°C, designed for RF signal transmission, video, instrumentation and communication applications. Search Keywords: KH-801-0039, Kinghelm KH-801-0039, KH-BNC75-3511, BNC female connector, BNC jack connector, 75 ohm BNC connector, PCB mount BNC jack, right angle BNC connector, through hole BNC connector, RF coaxial connector, 1/2-28 UNEF-2A BNC, BNC PCB connector, video signal connector, RF connector 3GHz, Kinghelm BNC connector Hashtags: #KH8010039 #KHBNC753511 #Kinghelm #KinghelmConnector #BNCConnector #BNCJack #BNCFemale #75OhmBNC #PCBMountBNC #ThroughHoleBNC #RightAngleBNC #RFConnector #CoaxialConnector #VideoConnector #InstrumentationConnector #3GHzConnector #RFJack #PCBConnector #CommunicationConnector #BNCFemaleJack

CONN HEADER TH 8POS 2.5mm 2.54mm-8P ZZ is a through-hole wire-to-board header connector from the XH-style connector family. It features a single-row 8-position configuration with approximately 2.5 mm pitch spacing, making it suitable for power and signal connections in consumer electronics, industrial controls, LED modules, battery systems, and embedded electronics. The connector is designed for PCB mounting and provides a reliable, low-cost interconnect solution for cable assemblies. Key Features Single-row 8-position (1×8) connector 2.5 mm / 2.54 mm pitch wire-to-board interface Through-hole PCB mounting Compatible with XH-series style housings Rated up to 3 A current Rated up to 250 V Tin-plated brass contacts for reliable conductivity UL94V-0 flame-retardant housing material Operating temperature range: -25°C to +85°C Suitable for power distribution and signal connections in electronic equipment Hashtags #Connector #WireToBoard #XHConnector #2_54mmPitch #ThroughHole #PCBConnector #8PinConnector #ElectronicComponents #Interconnect #EmbeddedSystems #IndustrialElectronics #PowerConnector #SignalConnector #RoHSCompliant