TVS Diode Arrays
(SPA
®
Diodes)
General Purpose ESD Protection - SD Series
SD Series 450W Discrete Unidirectional TVS Diode
Description
RoHS
Pb
GREEN
The Unidirectional SD series is designed for use in
electronic equipment for low speed and DC applications. It
will protect any sensitive equipment from damage due to
electrostatic discharge (ESD) and other transient events.
The SD series can safely absorb repetitive ESD strikes
at ±30kV (contact discharge, IEC 61000-4-2) without
performance degradation and safely dissipate 30A (SD05)
of 8/20μs induced surge current (IEC61000-4-5 2nd edition)
with very low clamping voltages.
Pinout and Functional Block Diagram
Features
• ESD, IEC61000-4-2,
±30kV contact, ±30kV air
• Small SOD323 package
fits 0805 footprints
• AEC-Q101 qualified
• RoHS Compliant and
Lead Free
• Moisture Sensitivity Level
(MSL
-1)
1
• EFT, IEC61000-4-4, 40A
(5/50ns)
• Lightning, IEC61000-4-5,
30A (t
P
=8/20μs, SD05)
• Low clamping voltage
• Low leakage current
2
Additional Information
Applications
• Switches / Buttons
• Test Equipment /
Instrumentation
• Point-of-Sale Terminals
• Medical Equipment
• Notebooks / Desktops /
Servers
• Computer Peripherals
• Automotive Electronics
Datasheet
Resources
Samples
Life Support Note:
Not Intended for Use in Life Support or Life Saving Applications
The products shown herein are not designed for use in life sustaining or life saving
applications unless otherwise expressly indicated.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/16
SD
TVS Diode Arrays
(SPA
®
Diodes)
General Purpose ESD Protection - SD Series
Absolute Maximum Ratings
Symbol
P
pk
T
OP
T
STOR
Notes:
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of
the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Parameter
Peak Pulse Power (t
p
=8/20μs)
Operating Temperature
Storage Temperature
Value
450
-40 to 125
-55 to 150
Units
W
°C
°C
Thermal Information
Parameter
Storage Temperature Range
Maximum Junction Temperature
Maximum Lead Temperature (Soldering 20-40s)
Rating
-55 to 150
150
260
Units
°C
°C
°C
SD05 Electrical Characteristics
(T
OP
=25ºC)
Parameter
Reverse Standoff Voltage
Reverse Voltage Drop
Leakage Current
Clamp Voltage
1
Dynamic Resistance
2
Peak Pulse Current
ESD Withstand Voltage
1
Diode Capacitance
1
Symbol
V
RWM
V
R
I
LEAK
V
C
R
DYN
I
pp
V
ESD
C
D
Test Conditions
I
R
≤1μA
I
R
=1mA
V
R
=5V
I
PP
=1A, t
p
=8/20µs, Fwd
I
PP
=10A, t
P
=8/20μs, Fwd
TLP tp=100ns, I/O to Ground
,
t
p
=8/20µs
IEC61000-4-2 (Contact Discharge)
IEC61000-4-2 (Air Discharge)
Reverse Bias=0V, f=1MHz
±30
±30
350
0.22
30.0
6.0
1.0
9.8
13.0
Min
Typ
Max
5.0
Units
V
V
μA
V
V
Ω
A
kV
kV
pF
SD12 Electrical Characteristics
(T
OP
=25ºC)
Parameter
Reverse Standoff Voltage
Reverse Voltage Drop
Leakage Current
Clamp Voltage
1
Dynamic Resistance
2
Peak Pulse Current
ESD Withstand Voltage
1
Diode Capacitance
1
Symbol
V
RWM
V
R
I
LEAK
V
C
R
DYN
I
pp
V
ESD
C
D-GND
Test Conditions
I
R
≤1μA
I
R
=1mA
V
R
=12V
I
PP
=1A, t
p
=8/20µs, Fwd
I
PP
=10A, t
P
=8/20μs, Fwd
TLP tp=100ns, I/O to Ground
,
t
p
=8/20µs
IEC61000-4-2 (Contact Discharge)
IEC61000-4-2 (Air Discharge)
Reverse Bias=0V, f=1MHz
±30
±30
150
0.29
17
.0
13.3
1.0
18.5
22.5
Min
Typ
Max
12.0
Units
V
V
μA
V
V
Ω
A
kV
kV
pF
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/16
TVS Diode Arrays
(SPA
®
Diodes)
General Purpose ESD Protection - SD Series
SD15 Electrical Characteristics
(T
OP
=25ºC)
Parameter
Reverse Standoff Voltage
Reverse Voltage Drop
Leakage Current
Clamp Voltage
1
Dynamic Resistance
2
Peak Pulse Current
ESD Withstand Voltage
1
Diode Capacitance
1
Symbol
V
RWM
V
R
I
LEAK
V
C
R
DYN
I
pp
V
ESD
C
I/O-GND
Test Conditions
I
R
≤1μA
I
R
=1mA
V
R
=15V
I
PP
=1A, t
p
=8/20µs, Fwd
I
PP
=10A, t
p
=8/20µs, Fwd
TLP tp=100ns, I/O to Ground
,
t
p
=8/20µs
IEC61000-4-2 (Contact Discharge)
IEC61000-4-2 (Air Discharge)
Reverse Bias=0V, f=1MHz
±30
±30
100
0.34
12.0
16.7
1.0
24.0
30.0
Min
Typ
Max
15.0
Units
V
V
μA
V
V
Ω
A
kV
kV
pF
SD24 Electrical Characteristics
(T
OP
=25ºC)
Parameter
Reverse Standoff Voltage
Reverse Voltage Drop
Leakage Current
Clamp Voltage
1
Dynamic Resistance
2
Peak Pulse Current
ESD Withstand Voltage
1
Diode Capacitance
1
Symbol
V
RWM
V
R
I
LEAK
V
C
R
DYN
I
pp
V
ESD
C
I/O-GND
Test Conditions
I
R
≤1μA
I
R
=1mA
V
R
=24V
I
PP
=1A, t
p
=8/20µs, Fwd
I
PP
=5A, t
p
=8/20µs, Fwd
TLP tp=100ns, I/O to Ground
,
t
p
=8/20µs
IEC61000-4-2 (Contact Discharge)
IEC61000-4-2 (Air Discharge)
Reverse Bias=0V, f=1MHz
±30
±30
65
0.49
7
.0
26.7
1.0
36.0
42.0
Min
Typ
Max
24.0
Units
V
V
μA
V
V
Ω
A
kV
kV
pF
SD36 Electrical Characteristics
(T
OP
=25ºC)
Parameter
Reverse Standoff Voltage
Reverse Voltage Drop
Leakage Current
Clamp Voltage
1
Dynamic Resistance
2
Peak Pulse Current
ESD Withstand Voltage
1
Diode Capacitance
1
Note:
1. Parameter is guaranteed by design and/or device characterization.
2.Transmission Line Pulse (TLP) with 100ns width and 200ps rise time.
Symbol
V
RWM
V
R
I
LEAK
V
C
R
DYN
I
pp
V
ESD
C
I/O-GND
Test Conditions
I
R
≤1μA
I
R
=1mA
V
R
=36V
I
PP
=1A, t
p
=8/20µs, Fwd
I
PP
=4A, t
p
=8/20µs, Fwd
TLP tp=100ns, I/O to Ground
,
t
p
=8/20µs
IEC61000-4-2 (Contact Discharge)
IEC61000-4-2 (Air Discharge)
Reverse Bias=0V, f=1MHz
Min
40.0
Typ
Max
36.0
1.0
52.0
62.0
Units
V
V
μA
V
V
Ω
A
kV
kV
0.61
5.0
±30
±30
50
pF
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/16
SD
TVS Diode Arrays
(SPA
®
Diodes)
General Purpose ESD Protection - SD Series
Non-Repetitive Peak Pulse Power vs. Pulse Time
10
pk (kW)
Capacitance vs. Bias
160
140
Peak Pulse Power - P
1
Capacitance (pF)
120
100
80
60
40
20
SD05
0.1
SD12
SD15
SD24
SD24C
21
24
27
SD36
SD36C
30
33
36
0.01
0.1
1
Pulse Duration - t p (µs)
10
100
1000
0
0
3
6
9
12
15
18
Bias Voltage (V)
Power Derating Curve
110
100
90
% of Rated Power I
PP
80
60
50
40
30
20
10
0
0
25
50
75
100
125
150
8/20 µs Pulse Waveform
110%
100%
90%
80%
Percent of I
PP
70
70%
60%
50%
40%
30%
20%
10%
0%
0.0
5.0
10.0
15.0
20.0
25.0
30.0
Ambient Temperature - T
A
C)
(
o
Time ( s)
SD05 Transmission Line Pulsing(TLP) Plot
22
20
18
16
SD12 Transmission Line Pulsing(TLP) Plot
22
20
18
16
TLP Current (A)
TLP Current (A)
14
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
14
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
22
TLP Voltage (V)
TLP Voltage (V)
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/16
TVS Diode Arrays
(SPA
®
Diodes)
General Purpose ESD Protection - SD Series
SD15 Transmission Line Pulsing(TLP) Plot
22
20
18
16
SD24 Transmission Line Pulsing(TLP) Plot
22
20
18
16
TLP Current (A)
TLP Current (A)
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
12
10
8
6
4
2
0
0
5
10
15
20
25
30
35
40
TLP Voltage (V)
TLP Voltage (V)
SD36 Transmission Line Pulsing(TLP) Plot
22
20
18
16
TLP Current (A)
14
12
10
8
6
4
2
0
0
5
10
15
20
25
30
35
40
45
50
55
60
TLP Voltage (V)
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus) Temp (T
L
)
to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – Free assembly
Temperature
T
P
T
L
T
S(max)
Preheat
Ramp-up
t
P
Critical Zone
T
L
to T
P
150°C
200°C
60 – 180 secs
3°C/second max
3°C/second max
217°C
60 – 150 seconds
260
+0/-5
°C
20 – 40 seconds
6°C/second max
8 minutes Max.
260°C
t
L
Ramp-do
Ramp-down
T
S(min)
t
S
time to peak temperature
25
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/11/16
SD
14
14
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