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
- SD Card Socket Types: SD and microSD (TF) Sizes, Contacts and MechanismsSD card socket types: SD, miniSD and microSD (TF) card sizes and contact counts per the SD Association, plus push-push and hinge sockets from KINGCONN.
- Micro SD Card Connector (Socket) Selection GuidemicroSD (T-Flash) socket selection: 1.15mm to 1.68mm profiles, 5,000 or 10,000 cycles, 19 KINGCONN models.
- microSD Standards & Generations: microSD 4.0, microSD Express, Combo SocketsmicroSD 4.0 (UHS-II), microSD Express (SD 7.0/8.0) and microSD+USB / UFS combo sockets, from 1.30mm.
- SD Card Connector (Socket) Selection GuideChoosing a full-size SD card connector: profile heights from 2.85mm, SD 4.0 (UHS-II) sockets with an extra contact row, and 10,000-cycle durability.
- SD 7.0 / SD 8.0 (SD Express) Card Connector GuideSD 7.0 and SD 8.0 (SD Express) card sockets: what changes vs legacy SD, heights from 1.8mm, and 8 KINGCONN models for the new-generation cards.
- CFast, CF & CFexpress Connector (Socket) Selection GuideCompactFlash, CFast and CFexpress/XQD sockets for industrial storage: 50-pin CF, 8.35mm CFast height, durability to 10,000 cycles — with KINGCONN data.
- Memory Stick Socket Continued-Supply GuideThe Memory Stick format is discontinued, but equipment that reads it still needs sockets. KINGCONN keeps Memory Stick and Stick Micro in the catalog.
- Memory Card Sockets for Dashcams, POS & Data LoggersCard sockets for write-heavy, user-swapped designs: 10,000-cycle microSD and SD sockets, push-push with card detect, from 19 microSD and 15 SD models.
SIM & smart card
- SIM Card Pinout and Sizes: 2FF, 3FF, 4FF and the SIM SocketSIM card pinout and form factors: mini (2FF), micro (3FF), nano (4FF) sizes per ETSI, contacts C1 to C8 per ISO/IEC 7816-2, and what a SIM socket carries.
- SIM Card Connector: Nano SIM, Micro SIM & Mini SIM SocketsSIM socket selection: mini (2FF), micro (3FF) and nano (4FF) SIM, heights from 1.25mm, KINGCONN catalog data.
- Smart Card Connector Selection: 100,000-Cycle ReadersSmart card (IC card) connectors for POS, payment and access readers: 2.54mm pitch, profiles from 1.4mm, 100,000-cycle durability — with KINGCONN data.
Board-to-board, FPC & expansion
- PCB Connector Types: Board-to-Board, FPC / FFC, Card-Edge and Board-End I/OPCB connector types — board-to-board, FPC/FFC, wire-to-board, card-edge, board-end I/O — pitch, stack height and pin count explained, with KINGCONN series.
- M.2 Key Types (A / B / M / E), M.2 Sizes and the M.2 ConnectorM.2 key types A, B, M, E (per PCI-SIG), sizes 2230 to 22110, why the socket has 67 contacts, and stack height for KINGCONN M.2 sockets.
- PCB Board-to-Board Connectors: Pitch, Stack Height, Pin CountHow to choose a board-to-board (BTB) connector: contact pitch from 0.4mm, mated height from 0.8mm, pin counts 10 to 200 — with KINGCONN BTB catalog data.
- FPC / FFC Connector Selection: Pitch, Height, Pin CountChoosing 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 Connector & Key Types (A / B / M / E) — with Mini PCIeM.2 card-edge sockets (0.50mm pitch, 67 positions, 3.2/4.0/4.2mm stack heights) for new designs, plus Mini PCI sockets for legacy industrial platforms.
- SODIMM Connectors & DIMM / DDR Memory Socket SelectionDDR 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 SystemsConnectors 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.
I/O & power
- USB Connector Types: Type-A, Type-B, Mini-B, Micro-B and Type-CUSB connector types: why a Type-A to Type-B cable exists, contact counts for Standard-A, Standard-B, Mini-B, Micro-B, and the 24-position Type-C.
- RJ45 Connector: 8P8C Pinout, T568A / T568B and Jack TypesRJ45 connector explained: the 8P8C jack, T568A and T568B pinouts per TIA-568, which pairs 1000BASE-T uses, and jacks with magnetics, LEDs and PoE.
- USB Type-C Connector Selection: Pin Count and DurabilityChoosing 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 Type-A, Type-B, Micro-B & Mini-B Receptacle SelectionBoard-mount USB receptacle selection: USB 2.0 and 3.0 Type-A, Micro-B and Mini-B sockets, durability to 10,000 cycles, and where legacy USB still fits.
- RJ45, HDMI, D-Sub and SATA Connector Selection GuidePanel and board I/O for industrial equipment: RJ45 jacks (750-cycle rating), 19-position HDMI, D-Sub 9 to 37 positions and SATA — with KINGCONN data.
- Circuit Board Power Connectors: DC Power Jack & Cable AssemblyDC 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), contacts 2P to 10P and height from 0.55mm — 19 KINGCONN models.
- Custom Connector Development GuideHow KINGCONN runs a custom connector project: what to send, how tooling is evaluated, and how an end-of-life part gets an alternative source.
- Discontinued Connector Replacement GuideYour connector went end-of-life but the product still ships. Replacement routes: matching existing tooling, footprint-identical custom development.
- Taiwan Connector Manufacturers: How to Choose a SupplierHow to evaluate a Taiwan connector manufacturer: manufacturer vs trader, design-in, drawings and STEP files, ISO 9001:2015, EOL continuity, lead time.