SP721APP Littelfuse Inc, SP721APP Datasheet - Page 4

• Manufacturer Part Number: SP721APP
• Description: TVS ARRAY ESD 6 INPUT 8-DIP
• Manufacturer: Littelfuse Inc
• Series: SP721r
• Type: Dioder

Specifications of SP721APP

• Package / Case: 8-DIP
• Voltage - Working: 30V
• Technology: Mixed Technology
• Number Of Circuits: 6
• Applications: General Purpose
• Current Rating: +/- 5 A
• Forward Voltage Drop: 2 V
• Operating Voltage: 2 V to 30 V
• Channels: 6 Channels
• Capacitance: 3 pF
• Operating Temperature Range: - 40 C to + 105 C
• Brand/series: SP721 Series
• Current, Surge: ±3 A
• Dimensions: 10.16mmL×7.11mmW×4.95mmH
• Mounting Type: SMD
• Primary Type: Transient Voltage Surge Suppressor
• Voltage, Supply: 2 to 30 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Voltage - Clamping: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: F2720

SP721 Lead-Free/Green Series
Peak Transient Current Capability of the SP721
The peak transient current capability rises sharply as the
width of the current pulse narrows. Destructive testing
was done to fully evaluate the SP721’s ability to withstand
a wide range of peak current pulses vs time. The circuit
used to generate current pulses is shown in Figure 4.
The test circuit of Figure 4 is shown with a positive pulse
input. For a negative pulse input, the (-) current pulse input
goes to an SP721 ‘IN’ input pin and the (+) current pulse
input goes to the SP721 V- pin. The V+ to V- supply of the
SP721 must be allowed to float. (i.e., It is not tied to the
ground reference of the current pulse generator.) Figure
5 shows the point of overstress as defined by increased
leakage in excess of the data sheet published limits.
The maximum peak input current capability is dependent
on the ambient temperature, improving as the temperature
is reduced. Peak current curves are shown for ambient
temperatures of 25ºC and 105ºC and a 15V power supply
condition. The safe operating range of the transient peak
current should be limited to no more than 75% of the
measured overstress level for any given pulse width as
shown in the curves of Figure 5.
Note that adjacent input pins of the SP721 may be
paralleled to improve current (and ESD) capability. The
sustained peak current capability is increased to nearly
twice that of a single pin.
TVS Diode Arrays
General Purpose ESD Protection - SP721 Series
Revision: April 14, 2011
64
Showing the Measured Point of Overstress in Amperes vs
pulse width time in milliseconds
Figure 4: Typical SP721 Peak Current Test Circuit
Figure 5: SP721 Typical Single Peak Current Pulse
7
6
4
3
2
1
0
(SPA
0.001
™
T
R
V
C1 ~ 100 μF
Family of Products)
A
with a Variable Pulse Width Input
1
X
Capability
= 10 °C
~ 10 TYPICAL
ADJ. 10V/A TYPICAL
0.01
-
+
V
X
T
VOLTAGE
A
PROBE
= 2 °C
R
PULSE WIDTH TIME (ms)
1
Please refer to
0.1
(+)
CURRENT
1
2
3
SENSE
CAUTION: SAFE OPERATING CONDITIONS LIMIT
V+ TO V-SUPPLY = 1 V
VARIABLE TIME DURATION
CURRENT PULSE GENERA TOR
IN
IN
IN
V-
Specifications are subject to change without notice.
THE MAXIMUM PEAK CURRENT FOR A GIVEN
PULSE WIDTH TO BE NO GREATER THAN 7 %
OF THE VALUES SHOWN ON EACH CURVE.
www.littelfuse.com/SPA
SP721
1
V+
IN
IN
IN
8
7
6
(-)
10
C1
for current information.
+
-
©2011 Littelfuse, Inc.
100
1000