Datasheet

2004 Jan 12 6
NXP Semiconductors Product data sheet
NPN switching transistor PMBT3904
handbook, full pagewidth
R
C
R2
R1
DUT
MLB826
V
o
R
B
(probe)
450 Ω
(probe)
450 Ω
oscilloscope
oscilloscope
V
BB
V
i
V
CC
Fig.7 Test circuit for switching times.
V
i
= 5 V; T = 500 µs; t
p
= 10 µs; t
r
= t
f
≤ 3 ns.
R1 = 56 Ω; R2 = 2.5 kΩ; R
B
= 3.9 kΩ; R
C
= 270 Ω.
V
BB
= −1.9 V; V
CC
= 3 V.
Oscilloscope: input impedance Z
i
= 50 Ω.