NE685
NEC'S SURFACE MOUNT NPN
SERIES
SILICON HIGH FREQUENCY TRANSISTOR
FEATURES
• LOW COST
• SMALL AND ULTRA SMALL SIZE PACKAGES
• LOW VOLTAGE/LOW CURRENT OPERATION
• HIGH GAIN BANDWIDTH PRODUCT: fT of 12 GHz
• NOISE FIGURES OF 1.5 dB AT 2.0 GHZ
19 (3 PIN ULTRA SUPER
MINI MOLD)
18 (SOT 343 STYLE)
DESCRIPTION
30 (SOT 323 STYLE)
33 (SOT 23 STYLE)
NEC's family of high frequency, low cost, surface mount
devices are well suited for portable wireless communications
and cellular radio applications.
The NE685 series of high fT (12 GHz) devices is suitable for
very low voltage/low current, low noise applications. These
products are ideal for applications up to 2.4 GHz where low
cost, high gain, low voltage, and low current are prime con-
cerns.
39 (SOT 143 STYLE)
39R (SOT 143R STYLE)
ELECTRICAL CHARACTERISTICS (TA = 25°C)
PART NUMBER1
EIAJ2 REGISTERED NUMBER
PACKAGE OUTLINE
NE68518
2SC5015
18
NE68519
2SC5010
19
NE68530
2SC4959
30
NE68533
2SC4955
33
NE68539/39R
2SC4957
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 = 3V, IC = 10 mA, f = 2.0 GHz
GHz
dB
12
12
12
12
12
NFMIN
GNF
Minimum Noise Figure at
VCE = 3 V, IC = 3 mA, f = 2.0 GHz
1.5 2.5
8.5
1.5 2.5
1.5 2.5
1.5 2.5
1.5 2.5
7.5
Associated Gain at
VCE = 3V, IC = 3 mA, f = 2.0 GHz
dB
7.5
11
9
7
7
10.5
8
MAG
Maximum Available Gain at
VCE = 3 V, IC = 10 mA, f = 2.0 GHz
dB
12
10
8.5
11
2
|S21E|
Insertion Power Gain at
VCE = 3V, IC =10 mA, f = 2.0 GHz
dB
9
11
7
7
7
9
10
hFE
ICBO
IEBO
Forward Current Gain3 at
VCE = 3 V, IC = 10 mA
75 110 150 75 110 150 75 110 150 75 110 150 75 110 150
Collector Cutoff Current
at VCB = 5 V, IE = 0 mA
μA
μA
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Emitter Cutoff Current
at VEB = 1 V, IC = 0 mA
4
CRE
Feedback Capacitance at
VCB = 3 V, IE = 0 mA, f = 1 MHz
pF
0.3 0.5
150
0.4 0.7
125
0.4 0.7
150
0.4 0.7
180
0.3 0.5
180
PT
Total Power Dissipation
mW
RTH(J-A)
Thermal Resistance
(Junction to Ambient)
°C/W
833
200
1000
200
833
200
620
200
620
200
RTH(J-C)
Thermal Resistance(Junction to Case) °C/W
Notes: 1. Precaution: Devices are ESD sensitive. Use proper handling procedures.
2. Electronic Industrial Association of Japan.
3. Pulsed measurement, PW≤350 μs, duty cycle ≤2%.
4. The emitter terminal should be connected to the ground terminal
of the 3 terminal capacitance bridge.
California Eastern Laboratories