2SK208
2014-03-01
1
TOSHIBA Field Effect Transistor Silicon N Channel Junction Type
2SK208
General Purpose and Impedance Converter and
Condenser Microphone Applications
• High breakdown voltage: V
GDS
= −50 V
• High input impedance: I
GSS
= −1.0 nA (max) (V
GS
= −30 V)
• Low noise: NF = 0.5dB (typ.) (R
G
= 100 kΩ, f = 120 Hz)
• Small package.
Absolute Maximum Ratings
(Ta
=
25°C)
Characteristics Symbol Rating Unit
Gate-drain voltage V
GDS
−50 V
Gate current I
G
10 mA
Drain power dissipation P
D
100 mW
Junction temperature T
j
125 °C
Storage temperature range T
stg
−55 to 125 °C
Note: Using continuously under heavy loads (e.g. the application of
high temperature/current/voltage and the significant change in
temperature, etc.) may cause this product to decrease in the
reliability significantly even if the operating conditions (i.e.
operating temperature/current/voltage, etc.) are within the
absolute maximum ratings.
Please design the appropriate reliability upon reviewing the
Toshiba Semiconductor Reliability Handbook (“Handling
Precautions”/“Derating Concept and Methods”) and individual
reliability data (i.e. reliability test report and estimated failure
rate, etc).
Electrical Characteristics
(Ta
=
25°C)
Characteristics Symbol Test Condition Min Typ. Max Unit
Gate cut-off current I
GSS
V
GS
= −30 V, V
DS
= 0 ⎯ ⎯ −1.0 nA
Gate-drain breakdown voltage V
(BR) GDS
V
DS
= 0, I
G
= −100 μA −50 ⎯ ⎯ V
Drain current
I
DSS
(Note)
V
DS
= 10 V, V
GS
= 0 0.3 ⎯ 6.5 mA
Gate-source cut-off voltage V
GS (OFF)
V
DS
= 10 V, I
D
= 0.1 μA −0.4 ⎯ −5.0 V
Forward transfer admittance ⎪Y
fs
⎪ V
DS
= 10 V, V
GS
= 0, f = 1 kHz 1.2 ⎯ ⎯ mS
Input capacitance C
iss
V
DS
= 10 V, V
GS
= 0, f = 1 MHz ⎯ 8.2 ⎯ pF
Reverse transfer capacitance C
rss
V
GD
= −10 V, I
D
= 0, f = 1 MHz ⎯ 2.6 ⎯ pF
Noise figure NF
V
DS
= 15 V, V
GS
= 0
R
G
= 100 kΩ, f = 120 Hz
⎯ 0.5 ⎯ dB
Note: I
DSS
classification R: 0.30 to 0.75 mA, O: 0.60 to 1.40 mA, Y: 1.2 to 3.0 mA, GR: 2.6 to 6.5 mA
Marking
Unit: mm
JEDEC TO-236MOD
JEITA SC-59
TOSHIBA 2-3F1B
Weight: 0.012 g (typ.)
Start of commercial production
1981-06
