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PDF HSMS-2820-BLK Data sheet ( Hoja de datos )
| Número de pieza | HSMS-2820-BLK | |
| Descripción | Surface Mount RF Schottky Barrier Diodes | |
| Fabricantes | Agilent(Hewlett-Packard) | |
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Surface Mount RF Schottky
Barrier Diodes
Technical Data
HSMS-282x Series
Features
• Low Turn-On Voltage
(As Low as 0.34 V at 1 mA)
• Low FIT (Failure in Time)
Rate*
• Six-sigma Quality Level
• Single, Dual and Quad
Versions
• Unique Configurations in
Surface Mount SOT-363
Package
– increase flexibility
– save board space
– reduce cost
• HSMS-282K Grounded
Center Leads Provide up to
10 dB Higher Isolation
• Matched Diodes for
Consistent Performance
• Better Thermal Conductivity
for Higher Power Dissipation
* For more information see the
Surface Mount Schottky Reliability
Data Sheet.
Description/Applications
These Schottky diodes are
specifically designed for both
analog and digital applications.
This series offers a wide range of
specifications and package
configurations to give the
designer wide flexibility. Typical
applications of these Schottky
diodes are mixing, detecting,
switching, sampling, clamping,
and wave shaping. The
HSMS-282x series of diodes is the
Package Lead Code Identification, SOT-23/SOT-143
(Top View)
SINGLE
3
SERIES
3
COMMON
ANODE
3
COMMON
CATHODE
3
12
#0
UNCONNECTED
PAIR
34
12
#2
RING
QUAD
34
12
#3
BRIDGE
QUAD
34
12
#4
CROSS-OVER
QUAD
34
12
#5
12
#7
12
#8
12
#9
Package Lead Code
Identification, SOT-323
(Top View)
SINGLE
SERIES
Package Lead Code
Identification, SOT-363
(Top View)
HIGH ISOLATION UNCONNECTED
UNCONNECTED PAIR
TRIO
654
654
B
COMMON
ANODE
C
COMMON
CATHODE
EF
best all-around choice for most
applications, featuring low series
resistance, low forward voltage at
all current levels and good RF
characteristics.
Note that Agilent’s manufacturing
techniques assure that dice found
in pairs and quads are taken from
adjacent sites on the wafer,
assuring the highest degree of
match.
123
K
COMMON
CATHODE QUAD
654
123
L
COMMON
ANODE QUAD
654
123
M
BRIDGE
QUAD
654
123
N
RING
QUAD
654
123
P
123
R
1 page  
Applications Information
Product Selection
Agilent’s family of surface mount
Schottky diodes provide unique
solutions to many design prob-
lems. Each is optimized for
certain applications.
The first step in choosing the right
product is to select the diode type.
All of the products in the
HSMS-282x family use the same
diode chip – they differ only in
package configuration. The same
is true of the HSMS-280x, -281x,
285x, -286x and -270x families.
Each family has a different set of
characteristics, which can be
compared most easily by consult-
ing the SPICE parameters given
on each data sheet.
The HSMS-282x family has been
optimized for use in RF applica-
tions, such as
DC biased small signal
detectors to 1.5 GHz.
Biased or unbiased large
signal detectors (AGC or
power monitors) to 4 GHz.
Mixers and frequency
multipliers to 6 GHz.
The other feature of the
HSMS-282x family is its
unit-to-unit and lot-to-lot consis-
tency. The silicon chip used in this
series has been designed to use
the fewest possible processing
steps to minimize variations in
diode characteristics. Statistical
data on the consistency of this
product, in terms of SPICE
parameters, is available from
Agilent.
For those applications requiring
very high breakdown voltage, use
the HSMS-280x family of diodes.
Turn to the HSMS-281x when you
need very low flicker noise. The
HSMS-285x is a family of zero bias
detector diodes for small signal
applications. For high frequency
detector or mixer applications,
use the HSMS-286x family. The
HSMS-270x is a series of specialty
diodes for ultra high speed
clipping and clamping in digital
circuits.
Schottky Barrier Diode
Characteristics
Stripped of its package, a
Schottky barrier diode chip
consists of a metal-semiconductor
barrier formed by deposition of a
metal layer on a semiconductor.
The most common of several
different types, the passivated
diode, is shown in Figure 10,
along with its equivalent circuit.
8.33 X 10-5 n T
Rj =
––––––––––––
I S + Ib
= RV – Rs
≈ –0–.0–2–6– at 25°C
IS + Ib
where
n = ideality factor (see table of
SPICE parameters)
T = temperature in °K
IS = saturation current (see
table of SPICE parameters)
Ib = externally applied bias
current in amps
Rv = sum of junction and series
resistance, the slope of the
V-I curve
IS is a function of diode barrier
height, and can range from
picoamps for high barrier diodes
to as much as 5 µA for very low
barrier diodes.
RS is the parasitic series resis-
tance of the diode, the sum of the
bondwire and leadframe resis-
tance, the resistance of the bulk
layer of silicon, etc. RF energy
coupled into RS is lost as heat—it
does not contribute to the recti-
fied output of the diode. CJ is
parasitic junction capacitance of
the diode, controlled by the thick-
ness of the epitaxial layer and the
diameter of the Schottky contact.
Rj is the junction resistance of the
diode, a function of the total
current flowing through it.
The Height of the Schottky
Barrier
The current-voltage characteristic
of a Schottky barrier diode at
room temperature is described by
the following equation:
–V–-–I–R–S
I = IS (e 0.026 – 1)
On a semi-log plot (as shown in
the Agilent catalog) the current
graph will be a straight line with
inverse slope 2.3 X 0.026 = 0.060
volts per cycle (until the effect of
METAL
RS
PASSIVATION
PASSIVATION
N-TYPE OR P-TYPE EPI LAYER
SCHOTTKY JUNCTION
N-TYPE OR P-TYPE SILICON SUBSTRATE
Cj
Rj
CROSS-SECTION OF SCHOTTKY
BARRIER DIODE CHIP
EQUIVALENT
CIRCUIT
Figure 10. Schottky Diode Chip.
5 Page 
Part Number Ordering Information
Part Number
No. of
Devices Container
HSMS-282x-TR2 *
10000
13" Reel
HSMS-282x-TR1 *
3000
7" Reel
HSMS-282x-BLK *
100 antistatic bag
x = 0, 2, 3, 4, 5, 7, 8, 9, B, C, E, F, K, L, M, N, P or R
Package Dimensions
Outline 23 (SOT-23)
1.02 (0.040)
0.89 (0.035)
* 1.03 (0.041)
0.89 (0.035)
PACKAGE
MARKING
CODE (XX)
0.54 (0.021)
0.37 (0.015)
DATE CODE (X)
3
XXX
1.40 (0.055)
1.20 (0.047)
2.65 (0.104)
2.10 (0.083)
0.60 (0.024)
0.45 (0.018)
12
2.04 (0.080)
1.78 (0.070)
* 2.05 (0.080)
1.78 (0.070)
TOP VIEW
3.06 (0.120)
2.80 (0.110)
* 0.180 (0.007)
0.085 (0.003)
0.152 (0.006)
0.086 (0.003)
1.04 (0.041)
0.85 (0.033)
0.10 (0.004)
0.013 (0.0005)
SIDE VIEW
0.69 (0.027)
0.45 (0.018)
END VIEW
* THESE DIMENSIONS FOR HSMS-280X AND -281X FAMILIES ONLY.
DIMENSIONS ARE IN MILLIMETERS (INCHES)
Outline SOT-323 (SC-70 3 Lead)
PACKAGE
MARKING
CODE (XX)
1.30 (0.051)
REF.
DATE CODE (X)
2.20 (0.087)
2.00 (0.079)
XXX
1.35 (0.053)
1.15 (0.045)
0.10 (0.004)
0.00 (0.00)
2.20 (0.087)
1.80 (0.071)
0.650 BSC (0.025)
0.30 REF.
0.425 (0.017)
TYP.
0.25 (0.010)
0.15 (0.006)
1.00 (0.039)
0.80 (0.031)
0.20 (0.008)
10° 0.30 (0.012) 0.10 (0.004)
0.10 (0.004)
DIMENSIONS ARE IN MILLIMETERS (INCHES)
Outline 143 (SOT-143)
PACKAGE
MARKING
CODE (XX)
EC
XXX
0.92 (0.036)
0.78 (0.031)
DATE CODE (X)
1.40 (0.055)
1.20 (0.047)
2.65 (0.104)
2.10 (0.083)
BE
0.60 (0.024)
0.45 (0.018)
2.04 (0.080)
1.78 (0.070)
3.06 (0.120)
2.80 (0.110)
0.54 (0.021)
0.37 (0.015)
0.15 (0.006)
0.09 (0.003)
1.04 (0.041)
0.85 (0.033)
0.10 (0.004)
0.013 (0.0005)
DIMENSIONS ARE IN MILLIMETERS (INCHES)
Outline SOT-363 (SC-70 6 Lead)
PACKAGE
MARKING
CODE (XX)
1.30 (0.051)
REF.
DATE CODE (X)
2.20 (0.087)
2.00 (0.079)
XXX
1.35 (0.053)
1.15 (0.045)
0.10 (0.004)
0.00 (0.00)
2.20 (0.087)
1.80 (0.071)
0.650 BSC (0.025)
0.30 REF.
0.425 (0.017)
TYP.
0.69 (0.027)
0.45 (0.018)
0.25 (0.010)
0.15 (0.006)
1.00 (0.039)
0.80 (0.031)
0.20 (0.008)
10° 0.30 (0.012) 0.10 (0.004)
0.10 (0.004)
DIMENSIONS ARE IN MILLIMETERS (INCHES)
11 Page | ||
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