User guide

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/25/13
TVS Diode Arrays (SPA
®
Diodes)
General Purpose ESD Protection - SP724 Series
ESD Capability
ESDratingisdependentonthedenedteststandard.The
evaluationresultsforvariousteststandardsandmethods
basedonFigure1areshowninTable1.3
TheSP724hasaLevel4ratingwhentestedtotheIEC
61000-4-2HumanBodyModel(HBM)standardand
connectedinacircuitinwhichtheV+andV-pinshave
areturnpathtoground.Level4speciesarequired
capabilitygreaterthan8kVfordirectdischargeandgreater
than15kVforairdischarge.
The“Modied”MIL-STD-3015.7conditionisdenedasan
“in-circuit”methodofESDtesting,theV+andV-pinshave
areturnpathtoground.TheSP724ESDcapabilityisgreater
than8kVwith100pFdischargedthrough1.5kΩ.Bystrict
denitionofthestandardMIL-STD-3015.7methodusing
“pin-to-pin”devicetesting,theESDvoltagecapabilityis
greaterthan2kV.
FortheSP724EIAJIC121MachineModel(MM)standard,
theESDcapabilityistypicallygreaterthan1.8kVwith
200pFdischargedthrough0kΩ.
TheChargedDevicemodelisbasedupontheself-
capacitanceoftheSOT-23packagethrough0kΩ.
Standard Type/Mode R
D
C
D
±V
D
IEC61000-4-2
(Level4)
HBM,AirDischarge 330Ω 150pF 15kV
HBM,DirectDischarge 330Ω 150pF 8kV
MIL-STD-3015.7
ModiedHBM 1.5kΩ 100pF 8kV†
StandardHBM 1.5kΩ 100pF 2kV
EIAJIC121 MachineModel 0kΩ 200pF 400V
USESDDS5.3
ChargedDevice
Model
0kΩ NA 3kV
H.V.
SUPPLY
V
D
IN
DUT
C
D
R
1
IEC 1000-4-2: R
1
50 to 100M
R
D
CHARGE
SWITCH
DISCHARGE
SWITCH
MIL STD 3015.7: R
1
1 to 10M
FIGURE 1. ELECTR OSTATIC DISCHARGE TEST
†Upperlimitoflaboratorytestset.
600800 1000
12
00
200
160
120
80
40
0
SINGLE PULSE
T
A
= 25°C
FORWARD SCR VOLTAGE DROP (mV)
FORWARD SCR CURRENT (mA)
5
4
3
2
1
0
T
A
= 25°C
SINGLE PULSE
EQUIV. SAT. ON
THRESHOLD ~ 1.1V
FORWARD SCR VOLTAGE DROP (V)
01 23
FORWARD SCR CURRENT (A)
600800 1000
1200
200
160
120
80
40
0
SINGLE PULSE
T
A
= 25°C
FORWARD SCR VOLTAGE DROP (mV)
FORWARD SCR CURRENT (mA)
5
4
3
2
1
0
T
A
= 25°C
SINGLE PULSE
EQUIV. SAT. ON
THRESHOLD ~ 1.1V
FORWARD SCR VOLTAGE DROP (V)
01
23
FORWARD SCR CURRENT (A)
Figure 1: Electrostatic Discharge Test
Table 1: ESD Test Conditions
Figure 3: High Current SCR Forward Voltage Drop CurveFigure 2: Low Current SCR Forward Voltage Drop Curve