"PCB connector" covers 5 kinds of part: board-to-board, FPC / FFC, wire-to-board, card-edge and board-end I/O — and every one of them is selected on the same 3 numbers: pitch, mated height and position count. This page sorts the kinds, shows where those numbers live on a drawing, and maps each kind to the KINGCONN series that carries it. All values are taken from the series drawings on this site.
The 5 kinds of PCB connector
| Kind | What it is | Pitches in the catalog | KINGCONN series |
|---|---|---|---|
| Board-to-board (BTB) | a plug on one board mates a receptacle on another | 0.40 / 0.5 / 0.8 / 1.27mm | BOARD TO BOARD |
| FPC / FFC | a flex cable slides into a board connector, usually flip-lock (ZIF) | 0.5 / 1.0mm | FPC |
| Wire-to-board | crimped wires in a housing mate a board header | by wire gauge | Cable (finished assemblies) |
| Card-edge | the module's own board edge is the plug | M.2 0.50mm, DIMM 0.50 / 0.60mm | M.2 / Mini PCI / DIMM |
| Board-end I/O | the board side of an external interface | by interface | Type-C / RJ45 / HDMI / SATA |
How to read a connector drawing
| Value | Where it is on the drawing | What it decides |
|---|---|---|
| Pitch | on the contact dimension line | plug and receptacle must match; finer saves area but demands placement accuracy |
| Mated height | the side view | decides what fits between the boards; unchangeable once the enclosure is fixed |
| Position count | model description or parameter table | 1 housing often covers several counts; the exact count is in the part number |
| Mounting | bottom view and pad drawing | SMT, DIP or hybrid; hybrid legs resist pull-out best |
| Durability | specification table | 60 cycles for a module socket, 10,000 for a card socket — 2 orders of magnitude apart |
Pitch is the centre distance between adjacent contacts. Traditional through-hole headers are 2.54mm (0.1 inch); surface-mount PCB connectors are far finer. KINGCONN board-to-board parts list 0.40, 0.5, 0.8 and 1.27mm pitches, FPC connectors 0.5 and 1.0mm, and M.2 card-edge sockets 0.50mm. Plug and receptacle pitch must match.
Mated height and position count
Mated height on a board-to-board pair is the distance between the boards once fully mated — it decides whether components fit between them. KINGCONN BTB models publish 0.80, 5.0, 10.0 and 15.0mm. For FPC the equivalent is the connector height above the board (1.0, 1.75, 2.5mm); for M.2 it is the module stack height (3.2, 4.0, 4.2mm). Position count follows the interface: BTB from 10 to 200, FPC 4 to 33, a keyed M.2 socket 67 contacts.
1 part from each kind
7BTBF-F0-0208XX0.4mm Pitch BOARD TO BOARD MATED HEIGHT 0.80mm HEADER CONNECTOR
7BTBF-F0-18XXXXX0.8 PITCH BTB SOCKET
7BTBF-F0-0850XXX0.8 PITCH BTB SOCKET H:5.0 MATING HEIGHT 10.0
7FPC7-F0-06XXFPC 0.5mm n-Pin Connector, H=1.0mm, Front-Entry, Rear Flip
7FPC7-F0-1025XXFPC PH1.0 H2.5mm
7NGFF-F0-0302NGFF 67PIN M KEY H:3.2mm
7MPCI-F0-0670MINI PCI EXPRESS H:6.7mm
7DDR5-F0-0001DDR5 STD 262P H:4.0mm
7USB31-C0-1001TYPE C 24PIN 15U FOR 10G
7RJ45-F0-0002RJ45 JACK
7R41R41-C0-XXX0RJ45 TO RJ45 LAN CABLEBoard-to-board at 0.4mm and 0.8mm and spacer class, FPC at 0.5mm and 1.0mm, card-edge M.2 / Mini PCI / DDR5 SO-DIMM, board-end Type-C and RJ45, and a finished cable assembly.
Which KINGCONN series belongs to which kind
Board-to-board: BOARD TO BOARD. FPC / FFC: FPC. Card-edge: M.2, Mini PCI, DIMM (DDR). Board-end I/O: Type-C, RJ45, HDMI, SATA. Cable: Cable. The selection detail for each is in the BTB guide, the FPC guide and the M.2 key guide.