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MU2646 Datasheet, PDF (1/2 Pages) Digitron Semiconductors – SILICON UNIJUNCTION TRANSISTOR
DIGITRON SEMICONDUCTORS
MU2646, MU2647
SILICON UNIJUNCTION TRANSISTOR
MAXIMUM RATINGS
Rating
Symbol
Value
Power dissipation(1)
PD
300
RMS emitter current
IE(RMS)
50
Peak pulse emitter current (2)
IE
2
Emitter reverse voltage
VB2E
30
Interbase voltage
VB2B1
35
Operating junction temperature range
TJ
-65 to 125
Storage temperature range
Tstg
-65 to 150
Note 1: Derate 3mW/°C increase in ambient temperature. The total power dissipation must be limited by the external circuitry.
Note 2: Capacitor discharge – 10µF or less, 30 volts or less.
Unit
mW
mA
Amps
Volts
Volts
°C
°C
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified)
Parameter
Symbol
Min
Typ
Max
Intrinsic standoff ratio
(VB2B1 = 10V) (1)
MU2646
MU2647
Interbase resistance
(VB2B1 = 3V, IE = 0)
Interbase resistance temperature coefficient
(VB2B1 = 3V, IE = 0, TA = -55° to 125°C)
Emitter saturation voltage
(VB2B1 = 10V, IE = 50mA)(2)
Modulated interbase current
(VB2B1 = 10V, IE = 50mA)
Emitter reverse current
(VB2E = 30V, IB1 = 0)
MU2646
MU2647
η
rBB
αrBB
VEB1(sat)
IB2(mod)
IEB2O
0.56
-
0.75
0.68
-
0.82
4.7
7
9.1
0.1
-
0.9
-
3.5
-
-
15
-
-
0.005 12
-
0.005 0.2
Peak point emitter current
(VB2B1 = 25V)
MU2646
IP
MU2647
-
1
5
-
1
2
Valley point current
(VB2B1 = 20V, RB2 = 100ohms)(2)
MU2646
MU2647
IV
4
6
-
8
10
18
Base-one peak pulse voltage(3)
MU2646
MU2647
VOB1
3
5
-
6
7
-
Note 1: Intrinsic standoff ratio: η = (VP-VF)/VB2B1, where VP = peak point emitter voltage , VB2B1 = interbase voltage, VF = emitter to base one junction diode drop
(≈ 0.45V @ 10µA).
Note 2: PW ≈ 300µs, duty cycle ≤ 2% to avoid internal heating due to interbase modulation which may result in erroneous readings
Note 3: Base one peak pulse voltage is used to ensure minimum pulse amplitude for applications in SCR firing circuits and other types of pulse circuits.
Unit
-
kohms
%/°C
Volts
mA
µA
µA
mA
Volts
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20121009
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