Polarized SMT and THM Battery Holders accommodate cylindrical batteries in sizes AA, AAA, 1/2 AA, and CR123A. Coil spring contacts ensure proper polarity and tension on installed battery, while heat-resistant Nylon housings suit units for traditional soldering and reflow processing. Gold-plated stainless steel contacts are featured on surface mount types. Thru-hole mount versions have nickel-plated stainless steel contacts and retaining covers are available for additional battery security.