The are all 21v, but whats the -20 -25 or -45 signify?
"IC,EPROM,2732A-20,VP:21V"
Jameco #40109
Mfg Ref #2732A-20
6.49 USD
"IC,EPROM,2732A-25,Vp:21V"
Jameco #40125
Mfg Ref #2732A-25
4.99 USD
"IC,EPROM,2732A-45,Vp:21V"
Jameco #40133
Mfg Ref #2732A-45
4.49 USD