The 1/3 N lithium battery holders, for surface or through-hole mounting, come with durable, heat-resistant, UL 94V-0-rated nylon housings for all soldering and reflow operations. The SMT version features gold-plated phosphor-bronze contacts. The THM version uses tin-plated phosphor-bronze contacts, heat-resistant nylon housings, and mount directly on PCBs for secure positioning during wave soldering and placement. Both holders accept 1/3 N 3-V cell lithium batteries.