The Panasonic / Matsushita NF4EB relays became obsolete at the end of 2012, Cephos now manufactures a replacement relay module - Cephos C-NF4EB.
Available in 5, 12 and 24V versions this module has the same dimensions and pinning as the original NF4EB - details at http://www.cephos.com/NF4EB-Relay.html
