Check the listing for details. Qty.4 Development Evaluation Boards (PCBs) for VCO in 0.5"x0.5" SMT Package. Condition: New. Listed at 13.95 USD. You are buying one lot (Qty: 4) VCO Evaluation / Development boards for Surface Mount Voltage Controlled Oscillator (VCO) with standard 0.50"x0.50" SMT package. PCBs will fit standard SMA edge launch connectors that accept 0.062" thick PCBs. PCB Specifications:Size: 1.06" x 0.64" x 0.062"Material: FR-4Thickness: 0.062"Finish: HASLLayers: 2-layer PCB with solid plated ground on the back. Color: GreenRF Connector: PCB accepts standard SMA edge launch connector for 0.062" thick PCBsDC Connector: PCB accepts 3-pin, 0.100" (2.54 mm) pitch thru male headerStrong, Easy to solderROHS compliant This PCB is compatible with the following Manufacturers / Parts series:Mini-Circuits ROS series CK605 Package, ZCOMM CRO, CLV and V Series MINI Package, RFMD / Sirenza / Vari-L VCO190, CRO193, VCO690, VCO790, VCO793 series with T package, Synergy Microwave MFC Series 174 Package, Modco,Universal Microwave, Emhiser Micro Tech, Raditek,MicroneticsMercury Systemsetc.