R
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H
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Telecom Design Guide • © 2006 Littelfuse 3 - 83 www.littelfuse.com
SIDACtor Devices
High Surge Current Two-pin SIDACtor® Device
This SIDACtor device is intended for very hostile environments such as CATV (Community
Antenna TV) systems and electronics connected to external antennas.
* “L” in part number indicates RoHS compliance. For non-RoHS compliant device, delete “L” from part number.
For surge ratings, see table below.
General Notes:
• All measurements are made at an ambient temperature of 25 °C. IPP applies to -40 °C through +85 °C temperature range.
• IPP is a repetitive surge rating and is guaranteed for the life of the product.
• Listed SIDACtor devices are bi-directional. All electrical parameters and surge ratings apply to forward and reverse polarities.
• VDRM is measured at IDRM.
• VS is measured at 100 V/µs.
• Special voltage (VS and VDRM) and holding current (IH) requirements are available upon request.
* Current waveform in µs
** Voltage waveform in µs
Electrical Parameters
Part
Number *
VDRM
Volts
VS
Volts
VT
Volts
IDRM
µAmps
IS
mAmps
IT
Amps
IH
mAmps
P1400ADL 120 160 3 5 800 2.2 50
P1800ADL 170 220 3 5 800 2.2 50
Surge Ratings in Amps
Series
IPP
ITSM
50 / 60 Hz di/dt
8x20 *
1.2x50 **
10x1000 *
10x1000 **
Amps Amps Amps Amps/µs
D 1000 250 120 500
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www.littelfuse.com 3 - 84 © 2006 Littelfuse • Telecom Design Guide
High Surge Current Two-pin SIDACtor® Device
Note: Off-state capacitance (CO) is measured at 1 MHz with a 2 V bias.
Thermal Considerations
Package Symbol Parameter Value Unit
Modified
TO-220
TJOperating Junction Temperature Range -40 to +150 °C
TSStorage Temperature Range -65 to +150 °C
RθJA Thermal Resistance: Junction to Ambient 60 °C/W
Capacitance Values
Part Number
pF
MIN MAX
P1400ADL 140 200
P1800ADL 120 180
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I
H
I
T
I
S
I
DRM
V
DRM
V
T
+
V
-V
+I
-I
V
S
V-I Characteristics
50
100
0
t
r
t
d
0
Peak
Value
Half Value
t – Time (µs)
I
PP
– Peak Pulse Current – %I
PP
t
r
= rise time to peak value
t
d
= decay time to half value
Waveform = t
r
x t
d
tr x td Pulse Waveform
-8
-40 -20 0 20 40 60 80 100 120 140 160
-6
-4
0
2
4
6
8
10
12
14
Junction Temperature (T
J
) – ˚C
Percent of V
S
Change – %
25 ˚C
Normalized VS Change versus Junction Temperature
0.4
-40 -20 0 20 40 60 80 100 120 140 160
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Case Temperature (TC) – ˚C
Ratio of
IH
IH (TC = 25 ˚C)
25 ˚C
Normalized DC Holding Current versus Case Temperature
