Features
nIndustry Standard Surface Mount Packages
nLow Capacitance Diodes
nLow Resistance Diodes
nLow Loss Switch Diodes
nHigh Isolation Switch Diodes
nLow Distortion Attenuator Diodes
nFast Switching Diodes
nSingle and Dual Diode Configurations
nTape and Reel Packaging
Description
M/A-COM offers six unique PIN diodes in five industry
standard, low cost, surface mount plastic packages. Within
this series, the PIN diodes offered, feature a variety of low
resistance, low capacitance and long minority carrier
lifetime characteristics.
The MA4P275 has the lowest series resistance for Series
Insertion Loss and Shunt Isolation switches. The MA4P789
has the lowest capacitance and offers the highest isolation
in Series and Series-Shunt switches through 3 GHz. The
MA4P277 and MA4P278 PIN diodes have longer intrinsic
layers to produce better distortion performance in
attenuators. The MA4P282 and MA4P274 are general-
purpose PIN diodes useful in either switches or attenuators.
These parts are available as single diodes, series pairs
( ST ) , reverse series pairs ( STR ) , common cathode pairs
( CK ) , common anode pairs ( CA ) , and unconnected pairs
in the featured packages.
The SMPP series of PIN diodes is available in the SOT-23
(case style 287), the SOT-143 (case style 1068), the SOT-
323 (case style 1146) , the SOD-323 (case style 1141) , and
the SC-79 (case style 1279) packages. These packages are
supplied on tape and reel for automatic pick and place
assembly on surface mount circuit boards. The tape and reel
suffix designation is a “T” at the end of the part number.
Surface Mount
Plastic PIN Diodes
SMPP Series
V 4.00
Absolute Maximum Ratings @ 25°C
Package Outlines
SOT-23
SC-79
SOT-143
SOD-323
3
21
3
2
1
2 1
3 4
1 2
SOT-323
Configurations (Top View)
Common Cathode
3
1 2
Single
Single
Common Anode
Unconnected Pair
3
2
1
3
2
1
Series Pair Series Pair Reverse
Parameter Absolute Maximum
Operating Temperature -65 °C to +150 °C
Storage Temperature -65 °C to +150 °C
Total ( RF + DC ) Power Dissipation
@+25 °C Ambient
SOT-23, SOT-143
SOT-323, SOD-323, SC-79
250 mW
150 mW
Reverse Voltage Voltage Rating
Forward Current 100 mA DC
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Electrical Specifications @ 25°C — SOT-23 Single Diode
Nominal Characteristics SOT-23
Model
Number
Reverse
Voltage VR1
(Volts)
Maximum
RS @ 10 mA3
(Ohms)
Carrier
Lifetime4
(µs)
I-Region
Thickness
(mils)
Ls = 1.4 nH
Cpkg = 0.12 pF
MA4P275-287T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789-287T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P282-287T 100 1.20 @ 20V 0.6 1.0 0.8
MA4P274-287T 100 0.35 @ 50V 3.0 1.0 2.0
MA4P277-287T 200 0.35 @ 50V 6.0 2.0 4.0
MA4P278-287T 200 0.35 @ 50V 10.0 3.0 7.0
Maximum
Total
Capacitance2
(pF)
2
SOT-23
SOT-23 Common Cathode
SOT-23 Series Pair5
Each Diode
Reverse
Voltage VR1
(Volts)
Each Diode
Maximum
Total
Capacitance2
(pF)
Each Diode
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-23
Model
Number
Each Diode
Carrier Lifetime4
(µs)
Each Diode
I-Region
Thickness (mils)
Ls = 1.4 nH
Cpkg = 0.12 pF
MA4P275CK-287T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789CK-287T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P282CK-287T 100 1.20 @ 20V 0.6 1.0 0.8
MA4P274CK-287T 100 0.35 @ 50V 3.0 1.0 2.0
Each Diode
Reverse
Voltage VR1
(Volts)
Each Diode
Maximum
Total
Capacitance2
(pF)
Each Diode
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-23
Model
Number
Each Diode
Carrier Lifetime4
(µs)
Each Diode
I-Region
Thickness (mils)
Ls = 1.4 nH
Cpkg = 0.12 pF
MA4P275ST-287T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789ST-287T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P274ST-287T 100 0.35 @ 50V 3.0 1.0 2.0
MA4P282ST-287T 100 1.20 @ 20V 0.6 1.0 0.8
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Each Diode
Maximum
Total
Capacitance2
(pF)
Each Diode
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-23
Model
Number
Each Diode
Carrier Lifetime4
(µs)
Each Diode
I-Region
Thickness (mils)
Ls = 1.4 nH
Cpkg = 0.12 pF
MA4P275CA-287T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789CA-287T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P282CA-287T 100 1.20 @ 20V 0.6 1.0 0.8
MA4P274CA-287T 100 0.35 @ 50V 3.0 1.0 2.0
MA4P277CA-287T 200 0.35 @ 50V 6.0 2.0 4.0
Each Diode
Reverse
Voltage VR1
(Volts)
MA4P278CA-287T 200 0.35 @ 50V 10.0 3.0 7.0
SOT-23 Common Anode
3
SOT-23 (Cont’d)
1. The reverse current will not exceed 10 µA at the Reverse Voltage rating.
2. Maximum total capacitance is measured at 1 MHz at the indicated voltage.
3. Maximum series resistance is measured at the specified current and a frequency of 100 MHz.
4. Nominal minority lifetime is measured at IF = 10 mA, IR = 6mA, 90% recovery.
5. Also available as reverse polarity series pairs. Designated as “MA4P275STR-287”, etc.
SOT-323
Electrical Specifications @ 25°C — SOT-323 Single Diode
Reverse
Voltage VR1
(Volts)
Maximum
Total
Capacitance2
(pF)
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-323
Model
Number
Carrier Lifetime4
(µs)
I-Region
Thickness (mils)
Ls = 1.3 nH
Cpkg = 0.12 pF
MA4P275-1146T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789-1146T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P282-1146T 100 1.20 @ 20V 0.6 1.0 0.8
MA4P274-1146T 100 0.35 @ 50V 3.0 1.0 2.0
MA4P277-1146T 200 0.35 @ 50V 6.0 2.0 4.0
MA4P278-1146T 200 0.35 @ 50V 10.0 3.0 7.0
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Each Diode
Reverse
Voltage VR1
(Volts)
Each Diode
Maximum
Total
Capacitance2
(pF)
Each Diode
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-323
Model
Number
Each Diode
Carrier Lifetime4
(µs)
Each Diode
I-Region
Thickness (mils)
Ls = 1.3 nH
Cpkg = 0.12 pF
MA4P275CK-1146T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789CK-1146T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P274CK-1146T 100 0.35 @ 50V 3.0 1.0 0.2
SOT-323 Common Cathode
SOT-323 (Cont’d)
1. The reverse current will not exceed 10 µA at the Reverse Voltage rating.
2. Maximum total capacitance is measured at 1 MHz at the indicated voltage.
3. Maximum series resistance is measured at the specified current and a frequency of 100 MHz.
4. Nominal minority lifetime is measured at IF = 10 mA, IR = 6mA, 90% recovery.
5. Also available as reverse polarity series pairs. Designated as “MA4P275STR-1146”, etc.
SOT-323 Common Anode
Reverse
Voltage VR1
(Volts)
Maximum
Total
Capacitance2
(pF)
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-323
Model
Number
Carrier Lifetime4
(µs)
I-Region
Thickness (mils)
Ls = 1.3 nH
Cpkg = 0.12 pF
MA4P275CA-1146T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789CA-1146T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P274CA-1146T 100 0.35 @ 50V 3.0 1.0 2.0
SOT-323 Series Pair5
Each Diode
Reverse
Voltage VR1
(Volts)
Each Diode
Maximum
Total
Capacitance2
(pF)
Each Diode
Maximum
RS @ 10 mA3
(Ohms)
Nominal Characteristics SOT-323
Model
Number
Each Diode
Carrier Lifetime4
(µs)
Each Diode
I-Region
Thickness (mils)
Ls = 1.3 nH
Cpkg = 0.12 pF
MA4P275ST-1146T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789ST-1146T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P274ST-1146T 100 0.35 @ 50V 3.0 1.0 2.0
4
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Nominal Characteristics SOT-323
Model
Number
Reverse
Voltage VR1
(Volts)
Maximum
RS @ 10 mA3
(Ohms)
Carrier
Lifetime4
(µs)
I-Region
Thickness
(mils)
Ls = 1.2 nH
Cpkg = 0.11 pF
MA4P275-1141T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789-1141T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P282-1141T 100 1.20 @ 20V 0.6 1.0 0.8
MA4P274-1141T 100 0.35 @ 50V 3.0 1.0 2.0
MA4P277-1141T 200 0.35 @ 50V 6.0 2.0 4.0
MA4P278-1141T 200 0.35 @ 50V 10.0 3.0 7.0
Maximum
Total
Capacitance2
(pF)
5
SOT-143
Electrical Specifications @ 25°C — SOT-143 Unconnected Pair
Maximum
Total
Capacitance2
(pF)
Nominal Characteristics SOT-143
Model
Number
Reverse
Voltage VR1
(Volts)
Maximum
RS @ 10 mA3
(Ohms)
Carrier
Lifetime4
(µs)
I-Region
Thickness
(mils)
Ls = 1.2 nH
Cpkg = 0.14 pF
MA4P275-1068T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789-1068T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P274-1068T 100 0.35 @ 50V 3.0 1.0 2.0
1. The reverse current will not exceed 10 µA at the Reverse Voltage rating.
2. Maximum total capacitance is measured at 1 MHz at the indicated voltage.
3. Maximum series resistance is measured at the specified current and a frequency of 100 MHz.
4. Nominal minority lifetime is measured at IF = 10 mA, IR = 6mA, 90% recovery.
Electrical Specifications @ 25°C — SOD-323 Single Diode
1. The reverse current will not exceed 10 µA at the Reverse Voltage rating.
2. Maximum total capacitance is measured at 1 MHz at the indicated voltage.
3. Maximum series resistance is measured at the specified current and a frequency of 100 MHz.
4. Nominal minority lifetime is measured at IF = 10 mA, IR = 6mA, 90% recovery.
SOD-323
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Maximum
Total
Capacitance2
(pF)
Nominal Characteristics SC-79
Model
Number
Reverse
Voltage VR1
(Volts)
Maximum
RS @ 10 mA3
(Ohms)
Carrier
Lifetime4
(µs)
I-Region
Thickness
(mils)
Ls = 0.6 nH
Cpkg = 0.10 pF
MA4P275-1279T 75 1.00 @ 20V 0.5 0.2 0.4
MA4P789-1279T 75 0.35 @ 20V 1.5 0.2 0.4
MA4P274-1279T 100 0.35 @ 50V 3.0 1.0 2.0
MA4P277-1279T 200 0.35 @ 50V 6.0 2.0 4.0
6
Electrical Specifications @ 25°C — SC-79 Single Diode
1. The reverse current will not exceed 10 µA at the Reverse Voltage rating.
2. Maximum total capacitance is measured at 1 MHz at the indicated voltage.
3. Maximum series resistance is measured at the specified current and a frequency of 100 MHz.
4. Nominal minority lifetime is measured at IF = 10 mA, IR = 6mA, 90% recovery.
SC-79
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Typical Forward Resistance vs DC Bias Current Curves @ 100 MHz
Resistance vs Forward Current
(MA4P282 Series) Resistance vs Forward Current
(MA4P789 Series)
Resistance vs Forward Current
(MA4P277 Series)
7
Resistance vs Forward Current
(MA4P278 Series)
Resistance vs Forward Current
(MA4P275 Series)
Resistance vs Forward Current
(MA4P274 Series)
0.1
1
10
100
1000
10000
FORWARD BIAS CURRENT
SERIES RESISTANCE, RS (OHMS)
1µA10µA100µA1mA 10mA100mA 0.1
1
10
100
1000
10000
FORWARD BIAS CURRENT
SERIES RESISTANCE, RS (OHMS)
1µA10µA100µA1mA 10mA100mA
0.1
1
10
100
1000
10000
FORWARD BIAS CURRENT
SERIES RESISTANCE, RS (OHMS)
1µA10µA100µA1mA 10mA100mA 1
10
100
1000
10000
100000
FORWARD BIAS CURRENT
SERIES RESISTANCE, RS (OHMS)
1µA10µA100µA1mA 10mA100mA
0.1
1
10
100
1000
10000
FORWARD BIAS CURRENT
SERIES RESISTANCE, RS (OHMS)
1µA10µA100µA1mA 10mA100mA 0.1
1
10
100
1000
10000
FORWARD BIAS CURRENT
SERIES RESISTANCE, RS (OHMS)
1µA10µA100µA1mA 10mA100mA
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
8
Mounting Information
The illustration indicates the recommended mounting pad
configuration for the SOT-23, SOT-323 , SOD-323,
SOT-143, and SC-79 packages. Solder paste containing
flux should be screened onto the pads to a thickness of
0.005- 0.007 inches. The plastic package device is
placed in position, firmly adhering to the solder past.
Permanent attachment is performed by a reflow soldering
procedure during which the tab temperature does not
exceed +275°C and the body temperature does not
exceed +250°C.
PIN Diode Cross Reference
Many of M/A-COM’s glass axial lead hermetic surface
mount and plastic PIN diodes use similar chips and,
therefore, have the same electrical characteristics, except
for package parasitics.
The following table lists the SOT-23, SOT-323 and
SOD-323 PIN diodes by model number and standard axial
lead PIN diode and the equivalent square surface mount
(SMQ) PIN diodes.
SOT-23
Diodes Axial Lead
Glass Diodes SMQ
Diodes
MA4P274-287T MA47123 MA4PH236
MA4P275-287T MA4P270 MA4PH235
MA4P277-287T MA47110 MA4PH238
MA4P278-287T MA47100
MA4P282-287T MA4PH151
MA4P789-287T MA4PH401
SOT-323
Diodes Axial Lead
Glass Diodes SMQ
Diodes
MA4P274-1146T MA47123 MA4PH236
MA4P275-1146T MA4P270 MA4PH235
MA4P277-1146T MA47110 MA4PH238
MA4P278-1146T MA47100
MA4P282-1146T MA4PH151
MA4P789-1146T MA4PH401
SOD-323
Diodes Axial Lead
Glass Diodes SMQ
Diodes
MA4P274-1141T MA47123 MA4PH236
MA4P275-1141T MA4P270 MA4PH235
MA4P277-1141T MA47110 MA4PH238
MA4P278-1141T MA47100
MA4P282-1141T MA4PH151
MA4P789-1141T MA4PH401
SOT-23
0.75
1.9
.037
0.95
.035
0.90
.090
2.2
.030
0.80
inches
mm
Dimenstions:
min.
min.
SOD-323
SOT-323
0.030
0.80
0.030
0.80
0.030
0.80
0.075
1.9
0.030
0.80
inches
mm
Dimenstions:
0.030
0.80
.090
2.2
0.030
0.80
inches
mm
Dimenstions:
0.030
0.80
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
SOT-143 SC-79
0.020
0.50
0.053
1.35 inches
mm
Dimenstions:
0.020
0.50
0.035
0.89
0.115
2.92
0.045
1.17
0.045
1.14
0.030
0.76
inches
mm
Dimenstions:
0.045
1.14
0.106
2.69
0.031
0.79
Case Styles
SOT-23
Case Style 287 SOT-23 (Case Style 287)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.048 1.22
B 0.008 0.20
C 0.040 1.00
D 0.013 0.020 0.35 0.50
E 0.003 0.006 0.08 0.15
F 0.110 0.119 2.80 3.00
G 0.047 0.056 1.20 1.40
H 0.037 typical 0.95 typical
J 0.075 typical 1.90 typical
K 0.103 2.60
L 0.024 0.60
DIM. GRADIENT
M 10° max.1
N 2° . . .30°
F
D
H
J
A
G
L
C
E
B
K
N
M
Note: 1. Applicable on all sides
9
SOT-323
Case Style 1146 SOT-323 (Case Style 1146)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.063 0.087 1.6 2.2
B 0.045 0.053 1.15 1.35
C 0.079 0.087 2.0 2.2
D 0.047 0.055 1.2 1.4
E 0.008 0.016 0.2 0.4
F 0.031 0.039 0.8 1.0
G 0.004 0.1
H 0.003 0.08
J 0.004 0.1
0.006
0.010 0.15
0.25
A
E
D
J
H
G
F
10°
MAX.
CB
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
G
J
E
K
A
H
M
C
F
B
L
P
N
D
10
Case Styles (Cont’d)
SOD-323
Case Style 1141 SOD-323 (Case Style 1141)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.043 1.1
B 0.004 0.1
C 0.008 0.2
D 0.010 0.016 0.25 0.4
E 0.003 0.006 0.08 0.15
F 0.063 0.075 1.6 1.9
G 0.045 0.057 1.15 1.45
H 0.091 0.106 2.3 2.7
F
D
H
G
C
E
A
B
SOT-143
Case Style 1068 SOT-143 (Case Style 1068)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.044 1.10
B 0.004 0.10
C
D 0.013 0.020 0.35 0.50
E 0.030 0.035 0.75 0.90
F 0.003 0.006 0.08 0.15
G 0.110 0.119 2.80 3.00
H 0.047 0.056 1.20 1.40
J 0.075 typical 1.90 typical
K 0.075 typical 1.90 typical
L 0.103 2.6
M
DIM. GRADIENT
M 10° max. 1
N 2° . . . 30°
0.040
0.024
1.00
0.6
Note: 1. Applicable on all sides
Surface Mount Plastic PIN Diodes SMPP Series
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
11
Case Styles (Cont’d)
SC-79
Case Style ODS-1279 SC-79 (Case Style 1279)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.020 0.028 0.50 0.71
B 0.003 0.008 0.08 0.20
C 0.006 0.010 0.15 0.25
D 0.010 0.014 0.25 0.36
E 0.059 0.067 0.08 0.15
F 0.043 0.051 1.50 1.30
G 0.011 0.012 0.28 0.30
H 0.037 0.043 0.94 1.09
D
E
F
Cathode
Mark
B
C
Seating
Plane
10
°
Max
A
10
°
Max
G
H
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