Datasheet

Electrical Characteristics (Cont’d): T
A
= +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Small–Signal Characteristics
Current–Gain – Bandwidth Product
(NTE128 Only)
f
T
I
C
= 50mA, V
CE
= 10V, f = 20MHz 100 – 400 MHz
Output Capacitance
NTE128
C
obo
V
CB
= 10V, I
E
= 0, f = 1MHz – – 12 pF
NTE129 V
CE
= 10V, f = 1MHz – – 20 pF
Input Capacitance
NTE128
C
ibo
V
BE
= 500mV, I
C
= 0, f = 1MHz – – 60 pF
NTE129 V
EB
= 500mV, f = 1MHz – – 110 pF
Small–Signal Current Gain
NTE128
h
fe
I
C
= 1mA, V
CE
= 5V, f = 1kHz 80 – 400
NTE129 I
C
= 50mA, V
CE
= 10V, f = 100MHz 1 – 4
Collector–Base Time Constant
(NTE128 Only)
rb′C
c
I
E
= 10mA, V
CB
= 10V, f = 79.8MHz – – 400 ps
Noise Figure (NTE128 Only) NF I
C
= 100µA, V
CE
= 10V, R
S
= 1kΩ,
f = 1kHz
– – 4 dB
Switching Characteristics (NTE129 Only)
Storage Time t
s
I
C
= 500mA, I
B1
= I
B2
= 50mA – – 350 ns
Turn–On Time t
on
I
C
= 500mA, I
B1
= 50mA – – 100 ns
Fall Time t
f
I
C
= 500mA, I
B1
= I
B2
= 50mA – – 50 ns
.260
(6.6)
Max
.500
(12.7)
Min
.370 (9.39) Dia Max
.355 (9.03) Dia Max
45°
.031 (.793)
Emitter
Base
Collector/Case
.018 (0.45)