Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 4/03A
Low Capacitance
Plastic Packaged PIN Diodes
Features
Designed for High Performance Wireless
Switch Applications
0.25 pF Capacitance Specified
Available Lead (Pb)-Free MSL-1 @ 250C
per JEDEC J-STD-020
Available in Tape and Reel Packaging
Description
The SMP1321 series of plastic packaged, surface
mountable PIN diodes are designed for high volume switch
applications from 10 MHz to beyond 2 GHz. The low
capacitance of these diodes (0.25 pF) combined with its low
resistance (2.0
maximum at 10 mA) make the SMP1321
series particularly suited to high isolation series connected
PIN diode switches in battery operated circuits. Available
in a selection of plastic packages and in a variety of
configurations including a low inductance (0.4 nH) SOT-23
(SMP1321-007), the small footprint SC-79 and the
miniature SC-70. The SMP1321-508 has been specifically
designed for WLAN 802.11 a, b, and g applications.
SMP1321 Series
Characteristic
Value
Reverse Voltage (V
R
)
100 V
Power Dissipation @ 25C Lead
250 mW
Temperature (P
D
)
Storage Temperature (T
ST
)
-65C to +150C
Operating Temperature (T
OP
)
-65C to +150C
ESD Human Body Model
Class 1B
Absolute Maximum Ratings
Single
Common Common Series
Pair
Low
Single
Single
Anti-Parallel
Anode
Cathode
Inductance
Marking: PM1
Marking: PM9
Marking: PM3
Marking: PM2
Marking: PMB
Marking: H
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOD-323
SC-79
LGA
SMP1321-001
SMP1321-003
SMP1321-004
SMP1321-005
SMP1321-007
SMP1321-011
SMP1321-079
SMP1321-508
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 0.4 nH
L
S
= 1.5 nH
L
S
= 0.7 nH
L
S
= 0.6 nH
SC-70
SC-70
SC-70
SC-79
SMP1321-073
SMP1321-074
SMP1321-075
SMP1321-079LF
L
S
= 1.4 nH
L
S
= 1.4 nH
L
S
= 1.4 nH
L
S
= 0.7 nH
LF denotes Lead (Pb)-Free packaging.
Lead (Pb)-Free "environmentally friendly"
packaging available: Skyworks offers the
SMP1321-079LF and SMP1321-508 Lead
(Pb)-Free package as a green alternative.
NEW
2
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 4/03A
Low Capacitance Plastic Packaged PIN Diodes
SMP1321 Series
Series Resistance vs. Current @ 100 MHz
0.01
0.1
1
10
100
Forward Current (mA)
Series Resistance (
)
0.1
1
10
100
0
1
2
5
10
20
50
Capacitance vs. Reverse Voltage
0
0.2
0.1
0.4
0.6
0.5
0.3
0.8
0.7
Reverse Voltage (V)
Capacitance (pF)
1 MHz1 GHz
400
500
600
700
800
900
1000
DC Characteristic
0.01
0.1
1
10
100
Forward Voltage (mV)
Forward Current (mA)
0
500
1000
1500
2000
Conductance vs. Frequency
and Reverse Voltage
Frequency (MHz)
Conductance (
S)
0 V
10 V
40 V
0
100
200
300
400
500
600
700
800
Typical Performance Data
Parameter
Condition
Typ.
Max.
Unit
Reverse Current (I
R
)
V
R
= 100 V
10
A
Capacitance (C
T
)
F = 1 MHz, V = 30 V
0.25
pF
Resistance (R
S
)
F = 100 MHz, I = 1 mA
3.0
Resistance (R
S
)
F = 100 MHz, I = 10 mA
2.0
Forward Voltage (V
F
)
IF = 10 mA
0.85
V
Carrier Lifetime (TI)
IF = 10 mA
0.4
S
I Region Width
15
m
Electrical Specifications at 25C
Low Capacitance Plastic Packaged PIN Diodes
SMP1321 Series
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
3
Specifications subject to change without notice. 4/03A
R
R
R
R
R
I
F
-55C
-15C
+25C
+65C
+100C
(mA)
(
)
(
)
(
)
(
)
(
)
0.02
47.400
50.000
56.300
61.500
65.100
0.10
12.000
12.600
13.900
15.400
16.400
0.30
5.200
5.400
5.800
6.400
6.900
0.50
3.600
3.800
4.100
4.500
4.800
1.00
2.400
2.500
2.600
2.800
3.100
10.00
1.030
1.040
1.040
1.070
1.150
20.00
0.871
0.888
0.873
0.889
0.956
100.00
0.669
0.659
0.642
0.645
0.695
Resistance vs. Temperature @ 500 MHz
SMP1321-007
In the -007 configuration of the SOT-23 package, the package
inductance is effectively reduced to 0.4 nH, in comparison to
the 1.5 nH value of the standard configuration. This lower
inductance will be particularly beneficial when the diodes are
used as shunt connected switches at frequencies higher than
500 MHz, where inductance is the primary limitation on
maximum switch isolation.
To achieve the effective 0.4 nH, the SOT-23 package must
be inserted in the microstrip circuit board with a gap in the
trace, as shown in the
figure. Because of the
polarity of the diode
junction, this low inductance
feature is only realizable with
the cathode connected to
ground.
Ground
Gap
4
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 4/03A
Low Capacitance Plastic Packaged PIN Diodes
SMP1321 Series
Profile Feature
SnPb Eutectic Assembly
Lead (Pb)-Free Assembly 100% Sn
Average Ramp-Up Rate (T
L
to T
P
)
3C/Second Max.
3C/Second Max.
Preheat
Temperature Min. (T
Smin
)
100C
150C
Temperature Max. (T
Smax
)
150C 200C
Time (Min. to Max.) (ts)
60120 Seconds
6080 Seconds
T
Smax
to T
L
Ramp-up Rate
--
3C/Second Max.
Time Maintained Above:
Temperature (T
L
) 183C
217C
Time (t
L
)
60150 Seconds
60150 Seconds
Peak Temperature (T
P
)
240 +0/-5C
250 +0/-5C
Time Within 5C of Actual Peak Temperature (tp)
1030 Seconds
2040 Seconds
Ramp-Down Rate
6C/Second Max.
6C/Second Max.
Time 25C to Peak Temperature
6 Minutes Max.
8 Minutes Max.
Recommended Solder Reflow Profiles
T
P
T
Smax
T
Smin
t
s
Preheat
t
p
Critical Zone
T
L
to T
L
t 25C to Peak
Time
T
emper
ature
T
L
25C
Reference JEDEC J-STD-020
I
L
All temperatures refer to the topside of the package, measured on the package body surface.
Reference JEDEC J-STD-020B.
Low Capacitance Plastic Packaged PIN Diodes
SMP1321 Series
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
5
Specifications subject to change without notice. 4/03A
SOT-23
3
2
1
0.035 (0.89 mm) MIN.
0.044 (1.12 mm) MAX.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.003 (0.080 mm) MIN.
0.008 (0.20 mm) MAX.
8 MAX.
0.022 (0.55 mm) REF.
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.037 (0.95 mm) REF.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
0.076 (1.92 mm) REF.
0.020 (0.51 mm) REF.
SOD-323
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.050
(1.25 mm) MAX.
0.006
(0.15 mm) TYP.
0.008 (0.20 mm) NOM.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
CATHODE
INDICATOR
2
1
LGA
PIN 2
PIN 3
PIN 1
PIN 1
PIN 3
PIN 2
PIN 4
(1.03)
(0.73)
(0.30)
(0.00)
PIN 4
0.058 (1.47 mm)
0.054 (1.39 mm)
0.028 (0.70 mm)
0.023 (0.58 mm)
SIDE VIEW
TOP VIEW
0.048 (1.23 mm)
0.044 (1.13 mm)
(0.138 x 45)
(1.27)
(0.87)
(0.40)
(0.00)
BOTTOM VIEW
(0.076) ALL AROUND
SC-79
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
10 MAX.
10 MAX.
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
0.006 (0.15 mm) MIN.
CATHODE
INDICATOR
1
2
SC-70
3
2
1
0.031 (0.80 mm) MIN.
0.039 (1.00 mm) MAX.
0.000 (0.00 mm) MIN.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.016 (0.40 mm) MAX.
0.071 (1.80 mm) MIN.
0.087 (2.20 mm) MAX.
0.071 (1.80 mm) MIN.
0.094 (2.40 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.026 (0.65 mm) REF.
0.051 (1.30 mm) REF.
0.004 (0.10 mm) MIN.
0.007 (0.18 mm) MAX.
0.004 (0.10 mm) MIN.
0.012 (0.30 mm) MAX.
0.014 (0.35 mm) REF.
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