Schottky Barrier Diodes for
Mixers and Detectors
Technical Data
5082-2817/18
Features
• Low Noise Figure
• High Burnout Rating
1 W RF Pulse Power Absorbed
• Rugged Design
• High Sensitivity
Outline 15
0.41 (.016)
0.36 (.014)
25.4 (1.00)
MIN.
1.93 (.076)
1.73 (.068)
tension for 30 minutes). The
maximum soldering temperature
is 230°C for 5 seconds. Marking is
by digital coding with a cathode
band.
Description/Applications
These Schottky diodes are
optimized for use in broad band
and narrow band coaxial or
waveguide mixer assemblies
operating to 8 GHz. Medium
barrier diodes provide a wider
dynamic range for lower
distortion mixer designs.
Note:
For new designs, the
HSMS-28XX series of surface
mount diodes are recommended.
4.32 (.170)
3.81 (.150)
CATHODE
25.4 (1.00)
MIN.
DIMENSIONS IN MILLIMETERS AND (INCHES).
Package Characteristics
The HP Outline 15 package has a
glass hermetic seal with plated
Dumet leads which should be
restricted so that the bend starts
at least 1/16" (1.6 mm) from the
glass body. With this restriction, it
will meet MIL-STD-750, Method
2036, Conditions A (4 lb. [1.8 kg]
Diode Package Marking
HPX
XXX
YZZ
where XXX are the last three digits of the 5082-XXXX
part number, Y is the last digit of the calendar year,
and ZZ is the work week of manufacture.
For example, a 5082-2817 manufactured during the
35th work week of 1996 would be marked
HP2
817
635
2
Maximum Ratings
Junction Operating and Storage Temperature Range
5082-2817, -2818 ................................................................. -60°C to +200°C
CW Power Dissipation
Derated linearly to 0 W at maximum rated temperatures
(measured in infinite heat sink at T
CASE
= 25
°
C).
5082-2817, -2818 ............................................................................... 250 mW
Pulse Power Dissipation
Peak power absorbed by the diode at T
CASE
= 25°C
1
µs
pulse, Du = 0.001 ............................................................................ 1 W
Soldering Temperature ......................................................... 260°C for 5 sec.
Note: These diodes are ESD sensitive. Handle with care to avoid static
discharge through the diode.
Electrical Specifications at T
A
= 25
°
C (Mixers)
Part
Number
5082-
2817
Matched
Pair
5082-
2818
LO
Test
Frequency
(GHz)
2.0
Maximum
SSB Noise
Figure
NF (dB)
6.0
IF
Impedance
Z
IF
(Ω)
Min. Max.
250
400
Same as for
NF except
IF = 10 KHz
Maximum
SWR
1.5:1
Same as
for NF
Typical
Parameters
Junction
Capaci-
tance
C
JO
(pF)
1.0
V=0
Break-
down
Voltage
V
BR
(V)
15
I
R
=
10
µA
Barrier
Medium
Test
∆NF ≤
0.3 dB
Conditions
∆Z
IF
≤
25
Ω
LO Power = 1 mW
IF = 30 MHz, 1.5 dB NF
Zero DC Load Resistance
(100
Ω
for 5082-2817)
SPICE Parameters
Parameter
B
V
C
J0
E
G
I
BV
I
S
N
R
S
P
B
P
T
M
Ω
V
Units
V
pF
eV
A
A
5082-2817
25
0.8
0.69
10E - 5
1.1 x 10E - 9
1.08
10
0.6
2
0.5
3
Typical Parameters,
continued
100
18
16
14
10
9
FORWARD CURRENT (mA)
10
DIODE NOISE RATIO (dB)
NOISE FIGURE (dB)
12
10
8
6
4
2
0
-2
-4
0.1
8
7
6
5
4
3
DIODE 5082-2817
IF = 30 MHz
F
IF
= 1.5 dB
P
LO
= 1.0 mW
R
L
= 100
Ω
1
0.1
0.01
0.001
0
0.2
0.4
0.6
0.8
1.0
1
10
100
1000
1
2
3
4
5
6
7
8
FORWARD DC VOLTAGE (V)
FREQUENCY (kHz)
FREQUENCY (GHz)
Figure 1. 5082-28XX Typical Forward
Characteristics at T
A
= 25°C.
Figure 2. 5082-28XX Typical Diode
Noise Ratio vs. Frequency at 1 mA
Current.
Figure 3. Typical Noise Figure vs.
Frequency. (The Mount is Tuned for
Minimum Noise Figure at each
Frequency.)
8
DIODE 5082-2817
f = 2 GHz
0
Ω
100
Ω
400
Ω
1.0
5
0.
NOISE FIGURE (dB)
7
0.2
1
1.5
3 mA
0.2
0.5
1.0
3.
5.
0
2
2.0
2.5
3.0
2.0
3.0
0
.0
10
6
1.0
10
100
Figure 4. Single Sideband Noise Figure
(including an IF-amplifier noise figure of
1.5 dB) vs. Incident LO Power for Various
DC-load Resistances R
L
. (The Mount is
Tuned for Minimum Noise Figure at each
LO Power Level.)
0.
5
Figure 5. Typical Admittance Characteristics, 5082-2817
with Self Bias.
1.0
6
5.5
5.0
2.0
4.5
3.
7 GHz
0
LOCAL OSCILLATOR POWER (mW)
4.0
5.
0
5
0.1
0.2
10
3.5
10.0
.0
5.0
For technical assistance or the location of
your nearest Hewlett-Packard sales office,
distributor or representative call:
Americas/Canada:
1-800-235-0312 or
408-654-8675
Far East/Australasia:
Call your local HP
sales office.
Japan:
(81 3) 3335-8152
Europe:
Call your local HP sales office.
Data subject to change.
Copyright © 1997 Hewlett-Packard Co.
Printed in U.S.A.
5965-8845E (6/97)
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