The following part numbersThe following part numbers
The following part numbers
The following part numbersThe following part numbers
NEC's NE681 series of NPN epitaxial silicon transistors are
designed for low noise, high gain, low cost amplifier applications. Both the chip and micro-x versions are suitable for
from this datasheet are notfrom this datasheet are not
from this datasheet are not
from this datasheet are notfrom this datasheet are not
amplifier applications up to 4 GHz. The NE681 die is also
available in six different low cost plastic surface mount pack-
recommended for new design.recommended for new design.
recommended for new design.
recommended for new design.recommended for new design.
age styles. NE681's unique device characteristics allow you to
use a single matching point to simultaneously achieve both low
noise and high gain.
Please call sales office forPlease call sales office for
Please call sales office for
Please call sales office forPlease call sales office for
00 (CHIP)
18 (SOT 343 STYLE)
E
B
NE681
SERIES
35 (MICRO-X)
19 (3 PIN ULTRA
SUPER MINI MOLD)
details:details:
details:
details:details:
NE68135NE68135
NE68135
NE68135NE68135
NOISE FIGURE, GAIN MSG
AND MAG vs. FREQUENCY
CE
= 3 V, IC = 5 mA
V
MSG
3.0
2.0
NF
Minimum Noise Figure, NF min (dB)
1.0
0.5 1.0 2.0 3.0
Frequency, f (GHz)
MAG
30 (SOT 323 STYLE)
20
10
39 (SOT 143 STYLE)39R (SOT 143R STYLE)
G
A
0
GA, MSG, MAG (dB)
and Maximum Available Gain,
Associated Gain, Maximum Stable Gain
33 (SOT 23 STYLE)
NE681 SERIES
ELECTRICAL CHARACTERISTICS (TA = 25°C)
PART NUMBERNE68100NE68118NE68119NE68130
EIAJ1 REGISTERED NUMBER2SC50122SC50072SC4227
PACKAGE OUTLINE00 (CHIP)181930
SYMBOLSPARAMETERS AND CONDITIONSUNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
fTGain Bandwidth Product at
NFNoise Figure at VCE = 8 V, IC = 7 mA,
GNFAssociated Gain at VCE = 8 V, IC = 7 mA,
21E|
|S
h
FEForward Current Gain
ICBOCollector Cutoff Current at
IEBOEmitter Cutoff Current at
CRE
RTH (J-A)Thermal Resistance (Junction to Ambient) °C/W808331000833
PTTotal Power DissipationmW600150100150
CE = 8 V, IC = 20 mAGHz9.09.0
V
V
CE = 3 V, IC = 7 mAGHz7.07.0
f = 1 GHzdB1.22.51.41.5
f = 2 GHzdB1.62.31.81.6
f = 1 GHzdB141413.5
f = 2 GHzdB12109
2
Insertion Power Gain at
VCE = 8 V, IC = 20 mA, f = 1 GHzdB1713151413
f = 2 GHzdB911987.5
2
at
VCE = 8 V, IC = 20 mA50100 25050100250
VCE = 3 V, IC = 7 mA8016040240
VCB = 10 V, IE = 0 mAµA1.01.01.01.0
VEB = 1 V, IC = 0 mAµA1.01.01.01.0
3
Feedback Capacitance at
VCB = 3 V, IE = 0 mA, f = 1 MHzpF0.450.90.450.9
VCB = 10 V, IE = 0 mA, f = 1 MHzpF0.20.70.250.8
ELECTRICAL CHARACTERISTICS (TA = 25°C)
PART NUMBERNE68133NE68135NE68139/39R
EIAJ1 REGISTERED NUMBER2SC35832SC36042SC4094
PACKAGE OUTLINE333539
SYMBOLSPARAMETERS AND CONDITIONSUNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX
fTGain Bandwidth Product at VCE = 8 V, IC = 20 mAGHz9.09.09.0
VCE = 3 V, IC = 7 mAGHz
NFNoise Figure at VCE = 8 V, IC = 7 mA, f = 1 GHzdB1.221.22
GNFAssociated Gain at VCE = 8 V, IC = 7 mA,
f = 1 GHzdB1313.5
f = 2 GHzdB12
|S21E|2Insertion Power Gain at VCE = 8 V, IC = 20 mA,
f = 1 GHzdB1112.515
f = 2 GHzdB79118.5
hFEForward Current Gain2 at VCE= 8 V, IC = 20 mA
VCE = 3 V, IC = 7 mA50 100 2505010025050100 200
ICBOCollector Cutoff Current at VCB = 10 V, IE = 0 mAµA1.01.01.0
IEBOEmitter Cutoff Current at VEB = 1 V, IC = 0 mAµA1.01.01.0
3
CRE
Feedback Capacitance at
VCB = 10 V, IE = 0 mA, f = 1 MHzpF0.350.90.20.70.25 0.8
RTH (J-A)Thermal Resistance (Junction to Ambient)°C/W625590625
PTTotal Power DissipationmW200295200
Notes:
1. Electronic Industrial Association of Japan.
2. Pulsed (PW ≤ 350 ms, duty cycle ≤ 2 %).
3. The emitter terminal should be connected to the ground terminal of the 3 terminal capacitance bridge.
f = 2 GHzdB1.62.3
NE681 SERIES
ABSOLUTE MAXIMUM RATINGS
SYMBOLSPARAMETERSUNITSRATINGS
V
CBOCollector to Base VoltageV20
VCEOCollector to Emitter VoltageV10
VEBOEmitter to Base VoltageV1.5
ICCollector CurrentmA65
JOperating Junction
T
TSTGStorage Temperature°C-55 to +150
Notes:
1. Operation in excess of any one of these parameters may result
in permanent damage.
S-Parameters include bond wires.
BASE: Total 1 wire (s), 1 per bond pad, 0.0122" (309 µm) long each wire.
COLLECTOR: Total 1 wire (s), 1 per bond pad, 0.008" (203 µm) long each wire.
EMITTER: Total 2 wire (s), 1 per side, 0.0194" (494 µm) long each wire.
WIRE: 0.0007" (17.7 µm) dia., gold.
Note:
1. Gain Calculations:
MAG =
21
|
|S
12
|
|S
(
K ±
2
K - 1
).
When K ≤ 1, MAG is undefined and MSG values are used.
MAG = Maximum Available Gain
MSG = Maximum Stable Gain
MSG =
|S
21
|
, K =
|S
12
|
2
1 + | ∆ | - |S
2 |S
12 S21
2
11
| - |S22|
|
2
∆ = S
,
11 S22
- S21 S
12
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