SURFACE MOUNT NPN SILICON
HIGH FREQUENCY TRANSISTOR
NE688
SERIES
FEATURES
• LOW PHASE NOISE DISTORTION
• LOW NOISE: 1.5 dB at 2.0 GHz
• LOW VOLTAGE OPERATION
• LARGE ABSOLUTE MAXIMUM COLLECTOR
CURRENT: IC MAX = 100 mA
19 (3 PIN ULTRA SUPER
MINI MOLD)
18 (SOT 343 STYLE)
• AVAILABLE IN SIX LOW COST PLASTIC SURFACE
MOUNT PACKAGE STYLES
• ALSO AVAILABLE IN CHIP FORM
DESCRIPTION
NEC's NE688 series of NPN epitaxial silicon transistors are
designedforlowcostamplifierandoscillatorapplications. Low
noise figures, high gain and high current capability equate to
wide dynamic range and excellent linearity. NE688's low
phase noise distortion and high fT make it an excellent choice
for oscillator applications up to 5 GHz. The NE688 series is
available in six different low cost plastic surface mount pack-
age styles, and in chip form.
30 (SOT 323 STYLE)
33 (SOT 23 STYLE)
39R (SOT 143R STYLE)
39 (SOT 143 STYLE)
ELECTRICAL CHARACTERISTICS (TA = 25°C)
PART NUMBER1
EIAJ2 REGISTERED NUMBER
PACKAGE OUTLINE
NE68818
2SC5194
18
NE68819
2SC5195
19
NE68830
2SC5193
30
NE68833
2SC5191
33
NE68839/39R
2SC5192/92R
39
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
fT
Gain Bandwidth Product at
VCE = 1V, IC = 3 mA, f = 2.0 GHz
GHz
GHz
dB
4
5
4.5
5
4
4.5
4
4.5
4
4.5
fT
Gain Bandwidth Product at
VCE = 3V, IC = 20 mA, f = 2.0 GHz
10
9.5
9
8.5
9
NFMIN
NFMIN
Minimum Noise Figure at
VCE = 1 V, IC = 3 mA, f = 2.0 GHz
1.7 2.5
1.5
1.7 2.5
1.5
1.7 2.5
1.5
1.7 2.5
1.5
1.7 2.5
1.5
Minimum Noise Figure at
VCE = 3 V, IC = 7 mA, f = 2.0 GHz
dB
2
|S21E|
|S21E|
hFE
Insertion Power Gain at
VCE = 1V, IC = 3 mA, f = 2.0 GHz
dB
3.0 4.0
8.5
3.0 4.0
8
2.5 3.5
6.5
2.5 3.5
6.5
4.0 4.5
9
2
Insertion Power Gain at
VCE = 3V, IC = 20 mA, f = 2.0 GHz
Forward Current Gain3 at
VCE = 1 V, IC = 3 mA
dB
80
160 80
160 80
160 80
160 80
160
100
100
ICBO
IEBO
Collector Cutoff Current
at VCB = 5 V, IE = 0 mA
nA
nA
100
100
100
100
100
100
100
100
Emitter Cutoff Current
at VEB = 1 V, IC = 0 mA
4
CRE
Feedback Capacitance at
VCB = 1 V, IE = 0 mA, f = 1 MHz
pF
0.65 0.8
150
0.7 0.8
125
0.75 0.85
150
0.75 0.85
200
0.65 0.8
200
PT
Total Power Dissipation
mW
RTH(J-A)
Thermal Resistance
(Junction to Ambient)
°C/W
833
1000
833
625
625
RTH(J-C)
Thermal Resistance(Junction to Case) °C/W
Notes:
3. Pulsed measurement, PW ≤ 350 µs, duty cycle ≤ 2%.
1. Precaution: Devices are ESD sensitive. Use proper handling procedures. 4. The emitter terminal should be connected to the ground terminal of
2. Electronic Industrial Association of Japan. the 3 terminal capacitance bridge.
California Eastern Laboratories