2N4851 Datasheet, PDF (1/2 Pages) Central Semiconductor Corp – PN SILICON UNIJUNCTION TRANSISTOR

2N4851
2N4852
2N4853
PN SILICON
UNIJUNCTION TRANSISTOR
w w w. c e n t r a l s e m i . c o m
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 2N4851, 2N4852,
and 2N4853 are Silicon PN Unijunction Transistors
designed for timing, sensing, and trigger circuits.
MARKING: FULL PART NUMBER
TO-18 (UJT) CASE
MAXIMUM RATINGS: (TA=25°C)
Emitter Reverse Voltage
SYMBOL
VB2E
Interbase Voltage
VB2B1
RMS Emitter Current
Ie
Peak Emitter Current (Duty Cycle ≤1%, PRR≤10pps) ie
RMS Power Dissipation
PD
Operating Junction Temperature
TJ
Storage Temperature
Tstg
30
35
50
1.5
300
-65 to +125
-65 to +200
ELECTRICAL CHARACTERISTICS: (TA=25°C unless otherwise noted)
SYMBOL TEST CONDITIONS
MIN
VB2B1=10V (2N4851)
0.56
VB2B1=10V (2N4852, 2N4853)
0.70
RBB
VB2B1=3.0V
4.7
IEB2O
VB2E=30V (2N4851, 2N4852)
IEB2O
VB2E=30V (2N4853)
IV
VB2B1=20V, RB2=100Ω (2N4851)
2.0
IV
VB2B1=20V, RB2=100Ω (2N4852)
4.0
IV
VB2B1=20V, RB2=100Ω (2N4853)
6.0
IP
VB2B1=25V (2N4851, 2N4852)
IP
VB2B1=25V (2N4853)
VOB1
V1=20V (2N4851)
3.0
VOB1
V1=20V (2N4852)
5.0
VOB1
V1=20V (2N4853)
6.0
MAX
0.75
0.85
9.1
100
50
2.0
0.4
UNITS
V
V
mA
A
mW
°C
°C
UNITS
kΩ
nA
nA
mA
mA
mA
μA
μA
V
V
V
R2 (13-December 2010)