This custom-made 2x20 surface-mount (SMT) female socket header is "that" header used in many Raspberry Pi HAT designs and recommended for HAT specification products by the Raspberry Pi Foundation. Note: This header has small securing lugs on the underside and will need to be factored into your PCB design (see image) It's a surface mount female "push-fit" type socket designed to be used to plug a Raspberry Pi HAT onto a 40-pin Raspberry Pi. The sockets are push-fit, so harder to use than the Thru-Hole type headers, but for the slickest, slimmest fit, this header is recommended! These are individually packaged parts from a pick & place reel, but come complete with the pick and place plate. The pins are large enough to be hand soldered, so perfect for prototyping and small-batch runs! We offer a number of push-fit headers which work perfectly with this socket header, in Tall, Extra-Tall Single Shroud and Double Shroud versions. Features * Surface Mount Bottom Entry Dual Row Socket * 2 x 20 (40 Pin) * 2.54mm Pitch * 3.5mm Height (Low Profile Type) * Specified for Raspberry Pi Add-ons & HAT GPIO Applications * Gold Flash Plating on Contact Area https://elecena.pl/product/22717354/surface-mount-smt-gpio-socket-header-for-raspberry-pi-hats-discontinued 2023-03-07 https://elecena.pl/product/22717354/surface-mount-smt-gpio-socket-header-for-raspberry-pi-hats-discontinued 2024-09-19