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BF861B,215

P1-P3P4-P6P7-P9P10-P12P13-P14
BF861A_BF861B_BF861C All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 15 September 2011 7 of 14
NXP Semiconductors
BF861A; BF861B; BF861C
N-channel junction FETs
V
DS
=8V. V
DS
=8V.
(1) V
GS
=0V.
(2) V
GS
= 200 mV.
(3) V
GS
= 400 mV.
(4) V
GS
= 600 mV.
(5) V
GS
= 800 mV.
(6) V
GS
= 1V.
Fig 10. Typical input characteristics; BF861C. Fig 11. Typical output characteristics; BF861C.
V
DS
=8V.
f=1 MHz.
V
DS
=8V.
(1) I
D
=10mA.
(2) I
D
=1mA.
(3) I
D
=0.1mA.
(4) I
D
=I
GSS
.
Fig 12. Input and reverse transfer capacitance as
functions of gate-source voltage; typical
values.
Fig 13. Gate current as a function of drain-gate
voltage; typical values.
V
GS
(V)
−2.5 0−0.5−1.5 −1−2
mbd469
8
12
4
16
20
I
D
(mA)
0
V
DS
(V)
0108462
mbd470
8
12
4
16
20
I
D
(mA)
0
(1)
(2)
(3)
(4)
(5)
(6)
V
GS
(V)
−80−2−6 −4
mbd471
4
6
2
8
10
C
is
, C
rs
(pF)
0
C
rs
C
is
mbd472
I
G
(nA)
−10
−2
−10
−4
−10
−3
−10
−1
−10
−1
−10
2
−10
−5
V
DG
(V)
0252010 155
(1)
(2)
(3)
(4)
BF861A_BF861B_BF861C All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 15 September 2011 8 of 14
NXP Semiconductors
BF861A; BF861B; BF861C
N-channel junction FETs
V
DS
=8V.
V
GS
=0V.
V
DS
=8V.
V
GS
=0V.
T
amb
= 25 C.
Fig 14. Equivalent input noise as a function of
frequency; typical values.
Fig 15. Common-source input admittance; typical
values.
V
DS
=8V.
V
GS
=0V.
T
amb
= 25 C.
V
DS
=8V.
V
GS
=0V.
T
amb
= 25 C.
Fig 16. Common-source reverse admittance; typical
values.
Fig 17. Common-source forward transfer admittance;
typical values.
mbd473
4
2
6
8
V
n
/√B
(nV/√Hz)
0
f (kHz)
10
−2
10
3
10
2
10
−1
101
mbd474
10
1
10
2
g
is
, b
is
(mS)
10
−1
f (MHz)
10 10
3
10
2
g
is
b
is
mbd475
f (MHz)
10 10
3
10
2
10
−1
1
10
10
2
g
rs
, b
rs
(mS)
10
−2
g
rs
b
rs
f (MHz)
10 10
3
10
2
mbd476
10
10
2
g
fs
, b
fs
(mS)
1
g
fs
b
fs
BF861A_BF861B_BF861C All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 15 September 2011 9 of 14
NXP Semiconductors
BF861A; BF861B; BF861C
N-channel junction FETs
V
DS
=8V.
V
GS
=0V.
T
amb
= 25 C.
Fig 18. Common-source output admittance; typical values.
mbd477
10
1
10
2
g
os
, b
os
(mS)
10
−1
f (MHz)
10 10
3
10
2
g
os
b
os
P1-P3P4-P6P7-P9P10-P12P13-P14

BF861B,215

Mfr. #:
Buy BF861B,215
Manufacturer:
NXP Semiconductors
Description:
RF JFET Transistors JFET N-CH 25V 10MA
Lifecycle:
New from this manufacturer.
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