TSI220B1RL STMicroelectronics, TSI220B1RL Datasheet - Page 5

• Manufacturer Part Number: TSI220B1RL
• Description: IC INTERFACE PROT DIO BRDG 8SOIC
• Manufacturer: STMicroelectronics

Specifications of TSI220B1RL

• Voltage - Clamping: 220V
• Technology: Mixed Technology
• Number Of Circuits: 1
• Applications: Telecommunications
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Voltage - Working: -

TSI
3
3.1
Electrical parameters
The V
For instance, if the maximum line voltage is ranging between 100 V
of battery voltage, then the protection chosen for this application shall have a V
200 V.
V
circuits. Passing this V
I
not only the voltage across it shall pass the V
pass the I
In other words, if a voltage surge occurring on the line is higher than the V
Trisil, but the line surge current is limited to a value that does not exceed the Trisil’s I
value, then the Trisil will never turn into a short-circuit. At this time the surge will be clamped
by the Trisil.
The electronic circuitry located after the Trisil will always be protected whatever the Trisil
state is (crowbar or clamping mode).
I
gets lower than this I
reason the Trisil’s I
current can be.
TSI behavior with regard to surge standard
The TSI replaces both diode bridge and usual discrete protection on telecom terminals.
Furthermore, it complies with the ITT K17 recommendations:
●
●
●
Figure 5.
BO
H
BO
is the holding current. When the Trisil is turned on, as soon as the crossing current surge
is the current that makes the device turn on. Indeed, if we want a Trisil to be turned on
is the triggering voltage. This indicates the voltage limit for which the component short-
10/700 µs waveform surge test ±1.5 kV
AC power induction test
AC power contact test
RM
generator
Surge
value corresponds to the maximum voltage of the application in normal operation.
BO
Test circuit for the ITT K17 recommendations
value.
H
value shall be chosen to be higher than the maximum telecom line
H
BO
value, the Trisil protection device turns back in its idle state. For this
makes the device turn on.
Doc ID 5487 Rev 5
Telecom
line side
10
PTC
BO
value but the current through it shall also
LB
LA
RMS
Electrical parameters
of ringing plus 48 V
BO
TSI
value of a
RM
close to
BO
5/12