Data Sheet

MMBF4391 / MMBF4392 / MMBF4393 — N-Channel Switch
© 1997 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBF4391 / MMBF4392 / MMBF4393 Rev. 1.3 3
Electrical Characteristics (Continued)
Values are at T
A
= 25°C unless otherwise noted.
Symbol Parameter Conditions Min. Max. Unit
Small Signal Characteristics
r
ds(on)
Drain-Source On Resistance V
DS
= V
GS
= 0, f = 1kHz
MMBF4391 30
ΩMMBF4392 60
MMBF4393 100
C
iss
Input Capacitance V
DS
= 20 V, V
GS
= 0, f = 1.0 MHz 14 pF
C
rss
Reverse Transfer Capacitance
V
GS
= -12 V, f = 1.0 MHz MMBF4391 3.5
pFV
GS
= -7.0 V, f = 1.0 MHz MMBF4392 3.5
V
GS
= -5.0 V, f = 1.0 MHz MMBF4393 3.5
Switching Characteristics
t
r
Rise Time
I
D(on)
= 12 mA MMBF4391 5.0
nsI
D(on)
= 6.0 mA MMBF4392 5.0
I
D(on)
= 3.0 mA MMBF4393 5.0
t
f
Fall Time
V
GS(off)
= 12 V MMBF4391 15
nsV
GS(off)
= 6.0 V MMBF4392 20
V
GS(off)
= 3.0 V MMBF4393 30
t
on
Turn-On Time
I
D(on)
= 12 mA MMBF4391 15
nsI
D(on)
= 6.0 mA MMBF4392 15
I
D(on)
= 3.0 mA MMBF4393 15
t
off
Turn-Off Time
V
GS(off)
= 12 V MMBF4391 20
nsV
GS(off)
= 6.0 V MMBF4392 35
V
GS(off)
= 3.0 V MMBF4393 50