Technical data

Application Examples 5
U1401A User’s and Service Guide 101
A silicon NPN high power transistor (2N3055) is used as an
example to demonstrate how the polarity and terminals are
identified.
According to the previous procedure, pin 2 is the base.
Figure 5-8 TO-3 Transistor
Table 5 - 6 Polarity and terminals if Pin 2 is the base
Test l ead s Pins Te rm i na ls
(V
be
>V
bc
)
Ty pe
2-1 2-3
Red/Black 0.5702 V 0.5663 V EBC NPN
Normally, the
case is the
collector
terminal.
3