2N4870
2N4871
SILICON
PN UNIJUNCTION TRANSISTORS
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 2N4870 and
2N4871 are silicon PN unijunction transistors designed
for oscillator, triggering and timing applications.
MARKING: FULL PART NUMBER
TO-92 CASE
MAXIMUM RATINGS: (TA=25°C) SYMBOL UNITS
Emitter Reverse Voltage VB2E 30 V
Interbase Voltage VB2B1 35 V
RMS Emitter Current Ie 1.5 A
Peak Emitter Current (Duty Cycle ≤1%, PRR=10pps) ie 1.0 A
RMS Power Dissipation PD 300 mW
Operating Junction Temperature TJ -65 to +125 °C
Storage Temperature Tstg -65 to +150 °C
ELECTRICAL CHARACTERISTICS: (TA=25°C) 2N4870 2N4871
SYMBOL TEST CONDITIONS MIN MAX MIN MAX UNITS
V
B2B1=10V 0.56 0.75 0.70 0.85
RBB V
B2B1=3.0V 4.0 9.1 4.0 9.1 kΩ
IEB2O V
B2E=30V - 1.0 - 1.0 μA
IV V
B2B1=20V, RB2=100Ω 2.0 - 4.0 - mA
IP V
B2B1=25V - 5.0 - 5.0 μA
VOB1 V
1=20V 3.0 - 5.0 - V
R1 (23-April 2013)
www.centralsemi.com
2N4870
2N4871
SILICON
PN UNIJUNCTION TRANSISTORS
LEAD CODE:
1) Base 1
2) Emitter
3) Base 2
MARKING:
FULL PART NUMBER
TO-92 CASE - MECHANICAL OUTLINE
www.centralsemi.com
R1 (23-April 2013)
