Datasheet

1999 Apr 22 4
NXP Semiconductors Product data sheet
NPN switching transistors PMST2222; PMST2222A
Note
1. Pulse test: t
p
300 µs; δ 0.02.
F noise figure I
C
= 200 µA; V
CE
= 5 V; R
S
= 2 k;
f
= 1 kHz; B = 200 Hz
4 dB
Switching times (between 10% and 90% levels); (see Fig.2)
t
on
turn-on time I
Con
= 150 mA; I
Bon
= 15 mA;
I
Boff
= 15 mA
35 ns
t
d
delay time 15 ns
t
r
rise time 20 ns
t
off
turn-off time 250 ns
t
s
storage time 200 ns
t
f
fall time 60 ns
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
Fig.2 Test circuit for switching times.
V
i
= 9.5 V; T = 500 µs; t
p
= 10 µs; t
r
= t
f
3 ns.
R1 = 68 ; R2 = 325 ; R
B
= 325 ; R
C
= 160 .
V
BB
= 3.5 V; V
CC
= 29.5 V.
Oscilloscope input impedance Z
i
= 50 .
handbook, full pagewidth
R
C
R2
R1
DUT
MLB826
V
o
R
B
(probe)
450
(probe)
450
oscilloscope
oscilloscope
V
BB
V
i
V
CC