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2N2221A Datasheet(PDF) 3 Page - Microsemi Corporation

Part No. 2N2221A
Description  SMALL SIGNAL BIPOLAR NPN SILICON
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Maker  MICROSEMI [Microsemi Corporation]
Homepage  http://www.microsemi.com
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MSCO328A 01-29-98
DSW2N2221A < - > ( 33807)
2N2221A
Electrical Characteristics (TA = 25
°C unless otherwise noted)
SMALL - SIGNAL CHARACTERISTICS
SYMBOL
MIN
MAX
UNIT
Output Capacitance
Cobo
( VCB = 10 Vdc,
IE = 0, 100kHz
≤f ≤1 MHz )
8
pF
Input
Capacitance
Cibo
( VEB = 0.5 Vdc, IC = 0, 100kHz
≤f ≤1 MHz )
25
pF
SWITCHING CHARACTERISTICS
SYMBOL
MIN
MAX
UNIT
Turn - On Time
ton
( VCC = 30 Vdc,
IC = 150 mAdc,
IB1 =15 mAdc)
( See FIGURE 1 )
35
ns
Turn - Off Time
toff
( VCC = 30 Vdc, IC = 150 mAdc,
IB1 = - IB2 = 15 mAdc) ( See FIGURE 2 )
300
ns
Small - Signal AC Characteristics (TA = 25
°C)
LOW FREQUENCY
SYMBOL
MIN
MAX
UNIT
Common - Emitter Forward Current Transfer Ratio
hfe
(IC = 1 mA, VCE = 10 V, f = 1kHz)
30
HIGH FREQUENCY
Common - Emitter Forward Current Transfer Ratio
|hfe|
(IC = 20 mA, VCE = 20 V, f = 100 MHz)
2.5
S p i c e M o d e l
(based upon typical device characteristics) * 1
Q2N2221A NPN ( IS = 426.3f
XTI = 3.0
EG = 1.11
VAF =250.3
BF = 72.14
ISE = 48.14p
+ NE = 2.935
IKF = 2.935
NK = 1.401
XTB = 1.5
BR = 11.49
ISC = 19.9f
+ NC = 1.88
IKR = 10.75
RC = 0.3567
CJC = 11.02p
VJC = 0.3869
MJC = 0.3292
+ FC = 0.5
CJE = 29.31p
VJE = 0.9036
MJE = 0.4101
TR = 16.89n
TF = 537.5p
+ ITF = 0.1383
XTF = 84.83m
VTF=10 )
*1. Microsemi Corp. claims no responsibility for misapplication of Spice Model information. Spice modeling should be
used as a precursor guide to in-circuit performance. Actual performance is the responsibility of the user/designer.




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