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TVS Diode Arrays (SPA ? Diodes)
General Purpose ESD Protection - SP723 Series
ESD Capability
ESD capability is dependent on the application and defined
test standard.The evaluation results for various test
standards and methods based on Figure 1 are shown in
Figure 1: Electrostatic Discharge Test
Table 1.
R 1
R D
DUT
The SP723 has a Level 4 HBM capability when tested as a
device to the IEC 61000-4-2 standard. Level 4 specifies a
required capability greater than 8kV for direct discharge and
greater than 15kV for air discharge.
For the “Modified” MIL-STD-3015.7 condition that is
defined as an “in-circuit” method of ESD testing, the V+
and V- pins have a return path to ground and the SP723
ESD capability is typically greater than 25kV from 100pF
through 1.5kΩ. By strict definition of MIL-STD-3015.7 using
CHARGE DISCHARGE
SWITCH SWITCH
C D
H.V. IN
SUPPLY
V D
IEC 1000-4-2: R 1 50 to 100M
MIL-STD-3015.7: R 1 1 to 10M
FIGURE 1. ELECTR OSTATIC DISCHARGE TEST
“pin-to-pin” device testing, the ESD voltage capability is
greater than 10kV.
For the SP723 EIAJ IC121 Machine Model (MM) standard,
the ESD capability is typically greater than 2kV from 200pF
with no series resistance.
Table 1: ESD Test Conditions
Standard Type/Mode
IEC 1000-4-2 HBM, Air Discharge
(Level 4)
HBM, Direct Discharge
R D
330 Ω
330 Ω
C D
150pF
150pF
±V D
15kV
8kV
MIL-
STD-3015.7
EIAJ IC121
EIAJ IC121
Modified HBM
Standard HBM
Machine Model
Machine Model
1.5k Ω
1.5k Ω
0k Ω
0kΩ
100pF
100pF
200pF
200pF
25kV
10kV
2kV
1kV
Figure 2: Low Current SCR Forward Voltage Drop Curve
Figure 3: High Current SCR Forward Voltage Drop Curve
200
160
120
80
200
T A = 25°C T A = 25°C
PULSE
SINGLE SINGLE PULSE
160
120
80
5
4
3
2
5
T A = 25oC T A = 25oC
PULSE
SINGLE SINGLE PULSE
4
3
2
I FWD
I FWD
40
40
1
1
ON .
EQUIV. SAT. EQUIV. SAT. ON
~ 1.1V
THRESHOLD THRESHOLD ~ 1.1V
V FWD
V FWD
0
600
0
600
800
800
1000
1000
1200
1200
0
0
0
0
1
1
2
2
3
3
SCR SCR DROP
FORWARD FORWARD VOLTAGE VOLTAGE (mV) DROP (mV)
? 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/24/13
SCR SCR DROP (V)
FORWARD FORWARD VOLTAGE VOLTAGE DROP (V)
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