EAGLE-PICHER 521-7P 521-7PN 521-3PN 521-3PNS2 521-7PNS4 521-7PNS6 521-3PNS4 521-16M 521-16MS2 Due to manufacturing issues with Eagle-Picher, the Keeper II line will have an extended lead time. Please contact a Mouser Technical Sales Representative for expected lead times. Due to new regulations governing the shipment of lithium Batteries, Mouser electronics will not ship these products via air methods at this time. These products will only be available for shipment via UPS Ground. 5-1204-59