1 piece of an MM5290J-4 vintage 16K RAM mfg. by National in a 16 pin ceramic DIP package. 

Parts are reconditioned. Removed from socket, cleaned & pins straightened.

Parts are fully guaranteed.

All ICs are shipped in plastic tubes, in a padded envelope.

All shipments are sent via USPS with delivery confirmation.

If you buy multiple items, please wait for an invoice, as we always combine shipping.

Questions ? Large quantity buys? Contact us !