Littelfuse SP4021 User Manual
TVS Diode Arrays (SPA
1
2
1
2
1
2
Unidirectional Bidirectional
SP4021-01FTG SP4021-01FTG-C
®
Diodes)
Lightning Surge Protection- SP4021 Series
SP4021 Series 2.5pF, 25A Discrete TVS Diode
Description
The SP4021 devices integrate low capacitance steering
diodes with one or two zener diodes for unidirectional or
bidirectional protection, respectively, to protect against
ESD and lightning induced surge events. These devices
can safely absorb up to 25A per IEC61000-4-5 (tp=8/20μs)
without performance degradation and a minimum ±30kV
ESD per IEC61000-4-2 International Standard. The low
loading capacitance and high surge capability make it ideal
for protecting telecommunication ports such as Ethernet
and other high speed data interfaces.
Pinout
Features
• ESD, IEC61000-4-2,
±30kV contact, ±30kV air
• EFT, IEC61000-4-4, 40A
(5/50ns)
• Lightning, IEC61000-4-5,
25A (t
• Low capacitance of 2.5pF
(@ V
=8/20μs)
P
=0V)
R
RoHS
Pb
GREEN
• Low leakage current
• Unidirectional and
Bidirectional configuration
• Small SOD323 package
fits 0805 footprints
SP4021
Functional Block Diagram
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.
©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Applications
•10/100/1000 Ethernet
•T1/E1/T3/E3
•USB 1.1/2.0
•Power Ports
1
Revision: July 12, 2013
•Computers and Peripherals
•Instrumentation
•Medical Equipment
SP4021 Series
TVS Diode Arrays (SPA
01
®
Diodes)
Lightning Surge Protection- SP4021 Series
Absolute Maximum Ratings
Symbol Parameter Value Units
I
PP
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.
Thermal Information
Storage Temperature Range -55 to 150 °C
Maximum Junction Temperature 150 °C
Maximum Lead Temperature (Soldering 20-40s) 260 °C
Peak Current (tp=8/20μs) 25 A
Peak Pulse Power (tp=8/20μs)
600
W
Operating Temperature -40 to 125 °C
Storage Temperature -55 to 150 °C
Parameter Rating Units
Electrical Characteristics (T
OP
=25ºC)
Parameter Symbol Test Conditions Min Typ Max Units
Breakdown Voltage V
Reverse Standoff Voltage V
Leakage Current I
BD
RWM
LEAK
IR=2uA 6.3 V
IR≤1μA 5.0 V
VR=5.0V 0.5 μA
IPP=1A, tp=8/20µs, Fwd 9.3 V
Clamp Voltage
Dynamic Resistance R
ESD Withstand Voltage
Diode Capacitance
Note:
1
Parameter is guaranteed by design and/or device characterization.
Normalized Capacitance vs. Bias Voltage
3.5
3.0
2.5
2.0
1.5
1.0
Normalized Capacitance (pF)
0.5
0.0
1
1
1
SP4021-01FTG SP4021-01FTG-C
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
V
C
DYN
V
ESD
C
D
Bias Voltage (V)
I
=10A, tp=8/20µs, Fwd 14.0 V
PP
I
=24A, tP=8/20μs, Fwd 19.6 V
PP
(VC2 - VC1) / (I
PP2
- I
IEC61000-4-2 (Contact Discharge) ±30 kV
IEC61000-4-2 (Air Discharge) ±30 kV
Reverse Bias=0V, f=1MHz 2.5 pF
) 0.52 Ω
PP1
Non-Repetitive Peak Pulse Power vs. Pulse Time
10
(kW)
pk
1
0.1
Peak Pulse Power - P
0.01
0.11 10 10
Pulse Duration - t
p
(µs)
000
2
Revision: July 12, 2013
Please refer to http://www.littelfuse.com for current information.
Specifications are subject to change without notice.
©2013 Littelfuse, Inc.
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