Connector Selection Guides

Every guide below is grounded in the KINGCONN catalog: each published figure carries its source engineering drawing. Start from your problem, not from a part number.

Memory card & storage sockets

• microSD Card Connector Selection GuideChoosing a microSD (T-Flash) card connector: profile heights from 1.15mm, 5,000 vs 10,000 insertion-cycle durability classes, and 19 KINGCONN models to match.
• microSD Generations & Combo Socket GuideBeyond the standard microSD socket: microSD 4.0 (UHS-II) at 1.30mm profile, microSD Express (SD 7.0/8.0) sockets, and microSD+USB / microSD+UFS combo connectors — with KINGCONN catalog data.
• Full-Size SD Card Connector Selection GuideChoosing a full-size SD card connector: profile heights from 2.85mm, SD 4.0 (UHS-II) second-row sockets, and 10,000-cycle durability — with KINGCONN catalog data.
• SD Express 7.0 / 8.0 Card Socket GuideSD 7.0 and SD 8.0 (SD Express) card sockets: what changes vs legacy SD, height options from 1.8mm, and 8 KINGCONN models supporting the new-generation cards.
• CF, CFast & CFexpress Socket Selection GuideThree generations of industrial storage-card sockets: 50-pin CompactFlash, CFast (8.35mm height) and CFexpress/XQD — durability to 10,000 cycles, with KINGCONN catalog data.
• Memory Stick Socket Continued-Supply GuideThe Memory Stick card format is discontinued, but equipment that reads it still needs sockets. KINGCONN keeps Memory Stick and Memory Stick Micro connectors in the catalog for repair and continued production.
• Memory Card Sockets for Dashcams, POS & Data LoggersCard-socket selection for write-heavy, user-swapped applications: 10,000-cycle microSD and SD sockets, push-push with card detect, from 19 microSD and 15 SD models.

SIM & smart card

• SIM Card Connector Selection GuideChoosing a SIM card connector for IoT and telematics: mini SIM (2FF), micro SIM (3FF) and nano SIM (4FF) sockets, profile heights from 1.25mm, 5000-cycle durability — with KINGCONN catalog data.
• Smart Card Connector Selection GuideSmart card (IC card) connectors for POS, payment and access readers: 2.54mm pitch, profiles from 1.4mm, 100,000-cycle durability — with KINGCONN catalog data.

Board-to-board, FPC & expansion

• Board-to-Board Connector Selection GuideHow to choose a board-to-board (BTB) connector: contact pitch from 0.4mm, mated height from 0.8mm, and pin counts from 10 to 200 — with the KINGCONN BTB series data to match.
• FPC Connector Selection GuideChoosing an FPC/FFC connector: 0.5mm and 1.0mm pitch, profile heights from 1.0mm, 4 to 33 positions — with KINGCONN FPC series data.
• M.2 & Mini PCI Socket Selection GuideM.2 card-edge sockets (0.50mm pitch, 67 positions, 3.2/4.0/4.2mm stack heights) for new designs, and Mini PCI sockets for maintaining legacy industrial platforms.
• DIMM / DDR Memory Socket Selection GuideDDR memory module sockets for embedded boards: 0.50mm and 0.6mm pitch, 200-position card-edge, 4.0mm and 9.20mm heights — with KINGCONN catalog data.
• Connectors for Rugged & Industrial Embedded SystemsConnector selection for industrial PCs and embedded modules: 10,000-cycle microSD sockets, SIM sockets, M.2 slots and fine-pitch board-to-board, from a Taiwan ODM manufacturer.

I/O & power

• USB Type-C Connector Selection GuideChoosing a USB Type-C receptacle: 16-pin vs 24-pin, 3,000 vs 10,000 mating cycles, 0.5mm contact pitch — with 11 KINGCONN models.
• USB Receptacle Selection GuideBoard-mount USB receptacle selection: USB 2.0 and 3.0 Type-A, Micro-B and Mini-B sockets, durability classes to 10,000 cycles — and where legacy USB still makes sense. With KINGCONN catalog data.
• Industrial I/O Connector Selection GuidePanel and board I/O for industrial equipment: RJ45 jacks (750-cycle rating), 19-position HDMI, D-Sub in 9 to 37 positions, and SATA connectors — with KINGCONN catalog data.
• DC Power Jack & Cable Assembly GuideDC power jacks with 5,000-cycle durability and custom cable assemblies built to drawing — the power-entry side of the KINGCONN catalog.

Switches, custom & EOL supply

• Board-Level Switch Selection GuideSelecting board-level switches by operating life (10,000 to 1,000,000 cycles), contact configuration (2P to 10P) and profile height from 0.55mm — with data from 19 KINGCONN switch models.
• Custom Connector Development GuideHow KINGCONN runs a custom connector project: what to send, how tooling is evaluated, and how a discontinued part gets a second source — from a Taiwan manufacturer with in-house tooling since 2002.
• Discontinued Connector Replacement GuideYour connector went end-of-life but your product still ships. How replacement sourcing works: matching against existing tooling, footprint-identical custom development, and the legacy families KINGCONN still manufactures.