Appeal No. 95-4927
Serial No. 08/216,772
the body of the package is coated with insulating material 21
over a length L in order to ensure (1) that the clearance
distance M (Fig. 3) in air between the exposed parts of the
center lead and the other leads is not less than the distance
between the outer ends of the center lead and the other leads
(Spec. at 7, lines 23-33) and (2) that the creepage distance N
(equal to e+f+g in Fig. 3) is not less than a predetermined
value (Spec. at 8, lines 2-10). Figure 5 shows a five-lead
embodiment having two partly insulated leads alternating with
three bent leads.
Claim 1, the sole independent claim, reads as follows:
1. A package for an integrated circuit device,
comprising:
a plurality of conductive leads projecting from one
side of said insulating body, each of said conductive
leads having a tip end distal from said insulating body,
wherein the tip ends of said conductive lead [sic, leads]
are separated from each of the remaining tip ends by a
distance equal to at least a selected value;
alternating ones of said leads having an insulating
coating covering a portion of their length extending from
said insulating body toward the tip end thereof;
the remaining leads having bends to space them away
from the alternating ones of said leads;
wherein the distance between all uninsulated
portions of any pair of leads is always greater than the
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