AGILENT HSMP-381B

Surface Mount RF PIN Low
Distortion Attenuator Diodes
Technical Data
HSMP-381x Series and
HSMP-481x Series
Features
• Diodes Optimized for:
– Low Distortion Attenuating
– Microwave Frequency
Operation
• Surface Mount Packages
– Single and Dual Versions
– Tape and Reel Options
Available
• Low Failure in Time (FIT)
Rate[1]
Package Lead Code
Identification, SOT-23
(Top View)
SINGLE
3
SERIES
3
1
1
#0
2
COMMON
ANODE
3
#2
2
COMMON
CATHODE
3
Package Lead Code
Identification, SOT-323
(Top View)
SINGLE
SERIES
B
C
COMMON
ANODE
COMMON
CATHODE
E
F
• Lead-free Option Available
Note:
1. For more information see the
Surface Mount PIN Reliability Data
Sheet.
1
#3
2
DUAL CATHODE
3
1
#4
2
DUAL CATHODE
Description/Applications
The HSMP-381x series is
specifically designed for low
distortion attenuator applications. The HSMP-481x products
feature ultra low parasitic
inductance in the SOT-23 and
SOT-323 packages. They are
specifically designed for use at
frequencies which are much
higher than the upper limit for
conventional diodes.
A SPICE model is not available
for PIN diodes as SPICE does not
provide for a key PIN diode
characteristic, carrier lifetime.
1
2
4810
481B
2
Absolute Maximum Ratings[1] TC = +25°C
Symbol Parameter
If
PIV
Tj
Tstg
θjc
Forward Current (1 µs Pulse)
Peak Inverse Voltage
Junction Temperature
Storage Temperature
Thermal Resistance[2]
Unit
SOT-23
SOT-323
Amp
V
°C
°C
°C/W
1
Same as VBR
150
-65 to 150
500
1
Same as VBR
150
-65 to 150
150
Notes:
1. Operation in excess of any one of these conditions may result in permanent damage to
the device.
2. TC = +25°C, where TC is defined to be the temperature at the package pins where
contact is made to the circuit board.
Electrical Specifications TC = +25°C (Each Diode)
Conventional Diodes
Part
Number
HSMP-
Package
Marking
Code
3810
3812
3813
3814
381B
381C
381E
381F
E0[1]
E2[1]
E3[1]
E4[1]
E0[2]
E2[2]
E3[2]
E4[2]
Lead
Code Configuration
0
2
3
4
B
C
E
F
Single
Series
Common Anode
Common Cathode
Single
Series
Common Anode
Common Cathode
Test Conditions
Minimum
Maximum
Maximum
Minimum
Breakdown
Total
Total
High
Voltage
Resistance Capacitance Resistance
VBR (V)
RT (Ω)
CT (pF)
RH (Ω)
Maximum
Low
Resistance
RL (Ω)
100
3.0
0.35
1500
10
VR = VBR
Measure
IR ≤ 10 µA
IF = 100 mA
f = 100 MHz
VR = 50 V
f = 1 MHz
IR = 0.01 mA
f = 100 MHz
IF = 20 mA
f= 100 MHz
High Frequency (Low Inductance, 500 MHz – 3 GHz) PIN Diodes
Part
Number
HSMP-
Package
Marking
Code
Lead
Code
4810
481B
EB
EB
B[1]
B[2]
Configuration
Dual Cathode
Dual Cathode
Test Conditions
Notes:
1. Package marking code is white.
2. Package laser marked.
Minimum
Maximum
Typical
Maximum
Typical
Breakdown
Series
Total
Total
Total
Voltage
Resistance Capacitance Capacitance Inductance
VBR (V)
RS (Ω)
CT (pF)
CT (pF)
LT (nH)
100
3.0
0.35
0.4
1.0
VR = VBR
Measure
IR ≤ 10 µA
IF = 100 mA
VR = 50 V
f = 1 MHz
VR = 50 V
f = 1 MHz
VR = 0 V
f = 500 MHz –
3 GHz
3
Typical Parameters at TC = 25°C
Part Number
HSMP-
Series Resistance
RS (Ω)
Carrier Lifetime
τ (ns)
Reverse Recovery Time
Trr (ns)
Total Capacitance
CT (pF)
381x
75
1500
300
0.27 @ 50 V
IF = 1 mA
f = 100 MHz
IF = 50 mA
IR = 250 mA
VR = 10 V
IF = 20 mA
90% Recovery
f = 1 MHz
Test Conditions
Typical Parameters at TC = 25°C (unless otherwise noted), Single Diode
0.35
1 MHz
0.30
0.25
30 MHz
0.20
INPUT INTERCEPT POINT (dBm)
0.40
RF RESISTANCE (OHMS)
TOTAL CAPACITANCE (pF)
120
10000
0.45
TA = +85°C
TA = +25°C
TA = –55°C
1000
100
10
frequency>100 MHz
0.15
0
2
4
6
8
1
0.01
10 12 14 16 18 20
1
10
100
IF – FORWARD BIAS CURRENT (mA)
REVERSE VOLTAGE (V)
Figure 1. RF Capacitance vs. Reverse
Bias.
100
IF – FORWARD CURRENT (mA)
0.1
Figure 2. RF Resistance vs. Forward
Bias Current.
Diode Mounted as a
110 Series Attenuator
in a 50 Ohm Microstrip
100 and Tested at 123 MHz
90
80
70
60
50
40
1000
100
10
DIODE RF RESISTANCE (OHMS)
Figure 3. 2nd Harmonic Input
Intercept Point vs. Diode RF
Resistance.
Typical Applications for Multiple Diode Products
VARIABLE BIAS
10
1
RF IN/OUT
INPUT
0.1
125°C 25°C –50°C
0.01
0
0.2
0.4
0.6
0.8
1.0
1.2
VF – FORWARD VOLTAGE (mA)
Figure 4. Forward Current vs.
Forward Voltage.
FIXED
BIAS
VOLTAGE
Figure 5. Four Diode π Attenuator. See Application Note 1048
for Details.
4
Typical Applications for HSMP-481x Low Inductance Series
Microstrip Series
Connection for
HSMP-481x Series
In order to take full advantage of
the low inductance of the
HSMP-481x series when using
them in series applications,
both lead 1 and lead 2 should be
connected together, as shown in
Figure 7.
Microstrip Shunt
Connections for
HSMP-481x Series
In Figure 8, the center
conductor of the microstrip
line is interrupted and
leads 1 and 2 of the
HSMP-481x series diode are
placed across the resulting gap.
This forces the 1.5 nH lead
inductance of leads 1 and 2 to
appear as part of a low pass
filter, reducing the shunt
parasitic inductance and
increasing the maximum
available attenuation. The
0.3 nHof shunt inductance
external to the diode is created
by the via holes, and is a good
estimate for 0.032" thick material.
3
1
2
HSMP-481x
Figure 6. Internal Connections.
Figure 7. Circuit Layout.
50 OHM MICROSTRIP LINES
1.5 nH
Rj
PAD CONNECTED TO
GROUND BY TWO
VIA HOLES
Figure 8. Circuit Layout.
1.5 nH
0.3 pF
0.3 nH
Rj ≈
0.08
I b0.9
+ 2.5
0.3 nH
Figure 9. Equivalent Circuit.
5
Typical Applications for HSMP-481x Low Inductance Series (continued)
Co-Planar Waveguide
Groundplane
Co-Planar Waveguide
Shunt Connection for
HSMP-481x Series
Center Conductor
Groundplane
Co-Planar waveguide, with
ground on the top side of the
printed circuit board, is shown
in Figure 10. Since it eliminates
the need for via holes to ground,
it offers lower shunt parasitic
inductance and higher maximum
attenuation when compared to a
microstrip circuit.
Figure 10. Circuit Layout.
Rj
0.3 pF
0.75 nH
Figure 11. Equivalent Circuit.
Equivalent Circuit Model
HSMS-381x Chip*
Rs
Rj
2.5 Ω
Cj
RT = 2.5 + R j
0.18 pF*
CT = CP + Cj
* Measured at -20 V
80
R j = 0.9 Ω
I
I = Forward Bias Current in mA
*See AN1124 for package models.
6
Assembly Information
SOT-323 PCB Footprint
A recommended PCB pad layout
for the miniature SOT-323 (SC-70)
package is shown in Figure 12
(dimensions are in inches). This
layout provides ample allowance
for package placement by automated assembly equipment
without adding parasitics that
could impair the performance.
0.026
0.07
Agilent’s diodes have been
qualified to the time-temperature
profile shown in Figure 14. This
profile is representative of an IR
reflow type of surface mount
assembly process.
0.035
0.016
Figure 12. PCB Pad Layout
(dimensions in inches).
SOT-23 PCB Footprint
0.037
0.95
0.037
0.95
SMT Assembly
Reliable assembly of surface
mount components is a complex
process that involves many
material, process, and equipment
factors, including: method of
heating (e.g., IR or vapor phase
reflow, wave soldering, etc.)
circuit board material, conductor
thickness and pattern, type of
solder alloy, and the thermal
conductivity and thermal mass of
components. Components with a
low mass, such as the SOT-323/-23
package, will reach solder reflow
temperatures faster than those
with a greater mass.
After ramping up from room
temperature, the circuit board
with components attached to it
(held in place with solder paste)
passes through one or more
preheat zones. The preheat zones
increase the temperature of the
board and components to prevent
thermal shock and begin evaporating solvents from the solder paste.
The reflow zone briefly elevates
the temperature sufficiently to
produce a reflow of the solder.
The rates of change of temperature for the ramp-up and cooldown zones are chosen to be low
enough to not cause deformation
of the board or damage to components due to thermal shock. The
maximum temperature in the
reflow zone (TMAX) should not
exceed 235°C.
These parameters are typical for a
surface mount assembly process
for Agilent diodes. As a general
guideline, the circuit board and
components should be exposed
only to the minimum temperatures and times necessary to
achieve a uniform reflow of
solder.
250
TMAX
0.079
2.0
0.035
0.9
0.031
0.8
DIMENSIONS IN
inches
mm
Figure 13. PCB Pad Layout.
TEMPERATURE (°C)
200
150
Reflow
Zone
100
Preheat
Zone
Cool Down
Zone
50
0
0
60
120
180
TIME (seconds)
Figure 14. Surface Mount Assembly Profile.
240
300
7
Package Dimensions
Outline 23 (SOT-23)
Outline SOT-323 (SC-70)
PACKAGE
MARKING
CODE (XX)
2.20 (0.087)
2.00 (0.079)
1.30 (0.051)
REF.
XXX
1.02 (0.040)
0.89 (0.035)
DATE CODE (X)
0.54 (0.021)
0.37 (0.015)
PACKAGE
MARKING
CODE (XX)
1.35 (0.053)
1.15 (0.045)
DATE CODE (X)
3
1.40 (0.055)
1.20 (0.047)
XXX
2.65 (0.104)
2.10 (0.083)
2
1
0.650 BSC (0.025)
0.425 (0.017)
TYP.
2.20 (0.087)
1.80 (0.071)
0.60 (0.024)
0.45 (0.018)
2.04 (0.080)
1.78 (0.070)
TOP VIEW
0.10 (0.004)
0.00 (0.00)
0.30 REF.
0.152 (0.006)
0.066 (0.003)
3.06 (0.120)
2.80 (0.110)
0.25 (0.010)
0.15 (0.006)
1.00 (0.039)
0.80 (0.031)
10°
0.30 (0.012)
0.10 (0.004)
1.02 (0.041)
0.85 (0.033)
0.20 (0.008)
0.10 (0.004)
0.69 (0.027)
0.45 (0.018)
0.10 (0.004)
0.013 (0.0005)
DIMENSIONS ARE IN MILLIMETERS (INCHES)
SIDE VIEW
DIMENSIONS ARE IN MILLIMETERS (INCHES)
Package Characteristics
Lead Material ................................... Copper (SOT-323); Alloy 42 (SOT-23)
Lead Finish ............................................................................ Tin-Lead 85-15%
Maximum Soldering Temperature .............................. 260°C for 5 seconds
Minimum Lead Strength .......................................................... 2 pounds pull
Typical Package Inductance .................................................................. 2 nH
Typical Package Capacitance .............................. 0.08 pF (opposite leads)
Ordering Information
Specify part number followed by option. For example:
HSMP - 381x - XXX
Bulk or Tape and Reel Option
Part Number; x = Lead Code
Surface Mount PIN
Option Descriptions
-BLK = Bulk, 100 pcs. per antistatic bag
-TR1 = Tape and Reel, 3000 devices per 7" reel
-TR2 = Tape and Reel, 10,000 devices per 13" reel
Tape and Reeling conforms to Electronic Industries RS-481, “Taping of
Surface Mounted Components for Automated Placement.”
For lead-free option, the part number will have the character "G" at the
end, eg. -TR2G for a 10K pc lead-free reel.
END VIEW
8
Device Orientation
For Outlines SOT-23/323
TOP VIEW
REEL
END VIEW
4 mm
8 mm
ABC
ABC
ABC
ABC
CARRIER
TAPE
USER
FEED
DIRECTION
Note: "AB" represents package marking code.
"C" represents date code.
COVER TAPE
Tape Dimensions and Product Orientation
For Outline SOT-23
P
P2
D
E
P0
F
W
D1
t1
Ko
9° MAX
B0
A0
DESCRIPTION
13.5° MAX
8° MAX
SYMBOL
SIZE (mm)
SIZE (INCHES)
CAVITY
LENGTH
WIDTH
DEPTH
PITCH
BOTTOM HOLE DIAMETER
A0
B0
K0
P
D1
3.15 ± 0.10
2.77 ± 0.10
1.22 ± 0.10
4.00 ± 0.10
1.00 + 0.05
0.124 ± 0.004
0.109 ± 0.004
0.048 ± 0.004
0.157 ± 0.004
0.039 ± 0.002
PERFORATION
DIAMETER
PITCH
POSITION
D
P0
E
1.50 + 0.10
4.00 ± 0.10
1.75 ± 0.10
0.059 + 0.004
0.157 ± 0.004
0.069 ± 0.004
CARRIER TAPE
WIDTH
THICKNESS
W
t1
8.00 +0.30 –0.10
0.229 ± 0.013
0.315 +0.012 –0.004
0.009 ± 0.0005
DISTANCE
BETWEEN
CENTERLINE
CAVITY TO PERFORATION
(WIDTH DIRECTION)
F
3.50 ± 0.05
0.138 ± 0.002
CAVITY TO PERFORATION
(LENGTH DIRECTION)
P2
2.00 ± 0.05
0.079 ± 0.002
Tape Dimensions and Product Orientation
For Outline SOT-323
P
P2
D
P0
E
F
W
C
D1
t1 (CARRIER TAPE THICKNESS)
Tt (COVER TAPE THICKNESS)
K0
An
A0
DESCRIPTION
B0
SYMBOL
SIZE (mm)
SIZE (INCHES)
CAVITY
LENGTH
WIDTH
DEPTH
PITCH
BOTTOM HOLE DIAMETER
A0
B0
K0
P
D1
2.40 ± 0.10
2.40 ± 0.10
1.20 ± 0.10
4.00 ± 0.10
1.00 + 0.25
0.094 ± 0.004
0.094 ± 0.004
0.047 ± 0.004
0.157 ± 0.004
0.039 + 0.010
PERFORATION
DIAMETER
PITCH
POSITION
D
P0
E
1.55 ± 0.05
4.00 ± 0.10
1.75 ± 0.10
0.061 ± 0.002
0.157 ± 0.004
0.069 ± 0.004
CARRIER TAPE
WIDTH
THICKNESS
W
t1
8.00 ± 0.30
0.254 ± 0.02
0.315 ± 0.012
0.0100 ± 0.0008
COVER TAPE
WIDTH
TAPE THICKNESS
C
Tt
5.4 ± 0.10
0.062 ± 0.001
0.205 ± 0.004
0.0025 ± 0.00004
DISTANCE
CAVITY TO PERFORATION
(WIDTH DIRECTION)
F
3.50 ± 0.05
0.138 ± 0.002
CAVITY TO PERFORATION
(LENGTH DIRECTION)
P2
2.00 ± 0.05
0.079 ± 0.002
FOR SOT-323 (SC70-3 LEAD)
An
8°C MAX
ANGLE
FOR SOT-363 (SC70-6 LEAD)
An
10°C MAX
www.agilent.com/semiconductors
For product information and a complete list of
distributors, please go to our web site.
For technical assistance call:
Americas/Canada: +1 (800) 235-0312 or
(916) 788-6763
Europe: +49 (0) 6441 92460
China: 10800 650 0017
Hong Kong: (65) 6756 2394
India, Australia, New Zealand: (65) 6755 1939
Japan: (+81 3) 3335-8152(Domestic/International), or
0120-61-1280(Domestic Only)
Korea: (65) 6755 1989
Singapore, Malaysia, Vietnam, Thailand, Philippines,
Indonesia: (65) 6755 2044
Taiwan: (65) 6755 1843
Data subject to change.
Copyright © 2004 Agilent Technologies, Inc.
Obsoletes 5968-5427E
March 24, 2004
5989-0482EN