Lead-Free / RoHS 3 Compliant / REACH Compliant 1.27 mm (50 mils) pitch dual row 40-pin vertical male header to 300 mil width DIP-40 adapter. Top side uses gold plated dual row surface mount vertical male header. Bottom side uses two gold plated single row surface mount vertical male headers. This adapter comes pre-assembled with top and bottom headers installed. Hole size: 1.0mm (40 mils) diameter. Holes accept 25 mil square wire wrap posts. PCB dimensions: 900 mils x 2000 mils x 62.5 mils (22.86 mm x 50.8 mm x 1.6 mm). PCB construction: FR-4 UL94V-0. PCB operating temperature range: -40C to +130C. PCB reflow maximum temperature: +260C. PCB Assembly standard: IPC-A-610 Class II.