TSP058B PANJIT [Pan Jit International Inc.], TSP058B Datasheet - Page 2

• Manufacturer Part Number: TSP058B
• Description: AXIAL LEAD BI-DIRECTIONAL THYRISTOR SURGE PROTECTOR DEVICE
• Manufacturer: PANJIT [Pan Jit International Inc.]

Follow these steps to select the proper Thyristor surge protector for your application:
1. Define the operating parameters for the circuit:
3. Select surge current ratings (I
4. Verify that the minimum holding current of the device at the maximum ambient temperature is above the maximum dc current of the
5. Verify that the maximum breakover voltage of the device is below the system damage threshold.
6. Verify that the circuit's ambient operating temperatures are within the device's operating temperature range.
7. Verify that the device's dimensions fit the application's space considerations.
8. Independently evaluate and test the suitability and performance of the device in the application
Notes:
1. Thermal accumulation between successive surge tests is
2. The device under test initially must be in thermal
3. Test at 1 cycle, 60 Hz.
4. Surge ratings are non-repetitive because instantaneous
5. Adjust the surge generator for optimum current-wave
6. The waveform is defined as A/B ms where:
Ver: June 2001
O
S
not allowed.
equilibrium with T
junction temperatures may exceed the maximum rated T
Nevertheless, devices will survive many surge applications
without degradation. Surge capability will not degrade over
a device's typical operating life.
accuracy when both voltage and current wave
specifications cannot be exactly met. The current wave is
more important than the voltage wave for accurate surge
evaluation.
A: (Virtual front time) = 1.25 X Rise time = 1.25 X (T
B (Duration time to 50% level of Ipps) = T
• Ambient operating temperature range
• Maximum telephone line operating current (highest battery and shortest copper loop)
• Maximum operating voltage: (Maximum DC bias + peak ringing voltage)
• Maximum surge current
• System voltage damage threshold
• Select device with an off-state voltage rating (V
system.
h
p
o
e
- t r
- n
i C
i C
c r
c r
S
R
t i u
t i u
N
V
y
t a
a
o
m
V
C
u l
e t
n i
b
o
r u
e
s
g
l o
a t l
e r
g
t n
J
e
= 25 °C.
W
W
a
a
e v
e v
2
2
3
PPS
1 /
1 /
0
0
0
0
and I
A
s
s
TSM
1
8
)
2 .
2
1
2 /
2
- T
5 /
0
5
those which the application must withstand.
0
N
0
A
o
s
s
n
DRM
R -
1
1
) above the maximum operating voltage at the minimum operating temperature.
e
b
0
0
p
1
- T
1 /
1 /
e
5
6
6
0
t i t
J
a
.
0
0
)
A
v i
(
e
, 1
s
s
% Ipps
, 2
P
I
100%
PPS
80%
60%
40%
20%
e
, 4
1
0%
5
a
0
To
, 5
k
3 /
1
7 /
1
) 6
1
Ta
P
0
5
0
u
0
A
s l
s
e
s
C
r u
1
1
Tb
0
0
e r
1
5 /
5 /
0
t n
6
6
0
0
0
A
s
s
1
1
0
0
1 /
1 /
8
0
0
0
0
0
A
0
0
Time
s
s
O
N
n
S -
o
n
a t
R -
e t
e
(
, 1
p
S
3
I
, 2
e
u
TSM
0
t i t
g r
, 3
A
v i
) 4
e
e
C
P
r u
PAGE 2
e
a
e r
k
t n
T1