P0900SCMC Littelfuse / Teccor Sidactor(R) Product, P0900SCMC Datasheet - Page 182
P0900SCMC
Manufacturer Part Number
P0900SCMC
Description
SIDACTOR MC BI 75V 400A DO-214AA
Manufacturer
Littelfuse / Teccor Sidactor(R) Product
Series
SIDACtor® SC(MC)r
Datasheet
1.P0080SCMC.pdf
(212 pages)
Specifications of P0900SCMC
Voltage - Breakover
98V
Voltage - Off State
75V
Voltage - On State
5V
Current - Peak Pulse (8 X 20µs)
400A
Current - Peak Pulse (10 X 1000µs)
100A
Current - Hold (ih)
150mA
Number Of Elements
1
Capacitance
70pF
Package / Case
DO-214AA, SMB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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TECCOR
Quantity:
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Part Number:
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3. Because traces exhibit a certain level of inductance, keep the length of the ground trace
For example, assume circuit A is protected by a P3100SC with a V
ground trace one inch in length and a self-inductance equal to 2.4 µH/inch. Assume
circuit B has the identical characteristics as Circuit A, except the ground trace is five inches
in length instead of one inch in length. If both circuits are surged with a 100 A, 10x1000 µs
wave-form, the results would be as shown in Table 5.2:
Table 5.2 Overshoot Caused by Trace Inductance
Other practices to ensure sound grounding techniques are:
1. Cross signal grounds and earth grounds perpendicularly in order to minimize the field
2. Make sure that the ground fingers on any edge connector extend farther out than any
on the PCB as short as possible in order to minimize its voltage contribution during a
transient condition. In order to determine the actual voltage contributed to trace
inductance, use the following equations:
effects of “noisy” power supplies.
power or signal leads in order to guarantee that the ground connection invariably is
connected first.
Circuit A
Circuit B
V = L (di/dt)
L = 0.0051 r [log
where r = length of trace
G = function of thickness and width as provided in Table 5.3
t = trace thickness
w = trace width
V
V
L
L
= 12 µH (100 A/10 µs) = 120 V
= 2.4 µH (100 A/10 µs) = 24 V
e
2 r/(t+w) +½ - log
V
L
= L (di/dt)
5 - 20
e
G] in µH
SIDACtor device V
SIDACtor
300 V
300 V
®
Data Book and Design Guide
© 2002 Teccor Electronics
S
S
equal to 300 V and a
Total protection level
(V
324 V
420 V
L
+ V
S
)
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