Datasheet

1. Product profile
1.1 General description
N-channel symmetrical junction field effect transistors in a SOT23 package.
1.2 Features and benefits
1.3 Applications
 Preamplifiers for AM tuners in car radios.
1.4 Quick reference data
BF861A; BF861B; BF861C
N-channel junction FETs
Rev. 5 — 15 September 2011 Product data sheet
SOT23
CAUTION
The device is supplied in an antistatic package. The gate-source input must be protected against
static discharge during transport or handling.
MSC895
 High transfer admittance  Low input capacitance
 Low feedback capacitance  Low noise.
Table 1. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
V
DS
drain-source voltage
(DC)
--25V
I
DSS
drain current
BF861A V
GS
=0V; V
DS
=8V 2 - 6.5 mA
BF861B V
GS
=0V; V
DS
=8V 6 - 15 mA
BF861C V
GS
=0V; V
DS
=8V 12 - 25 mA
P
tot
total power dissipation up to T
amb
=25C--250mW
y
fs
 forward transfer
admittance;
BF861A V
GS
=0V; V
DS
=8V 12 - 20 mS
BF861B V
GS
=0V; V
DS
=8V 16 - 25 mS
BF861C V
GS
=0V; V
DS
=8V 20 - 30 mS
C
iss
input capacitance f = 1 MHz - - 10 pF
C
rss
reverse transfer
capacitance
f=1MHz - - 2.7 pF