TISP61089A
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JUNE 1999
Positive overvoltages are clipped to ground by diode forward conduction. Negative overvoltages are initially
clipped close to the SLIC negative supply rail value. If sufficient current is available from the overvoltage, then
the protector will crowbar into a low voltage on-state condition. As the overvoltage subsides the high holding
current of the crowbar prevents d.c. latchup.
The TISP61089A is intended to be used with a series combination of a 25
Ω
or higher resistance and a
suitable overcurrent protector. Power fault compliance requires the series overcurrent element to open-circuit
or become high impedance (see Applications Information). For equipment compliant to ITU-T
recommendations K20 or K21 only, the series resistor value is set by the power cross requirements. For K20
and K21, a minimum series resistor value of 10
Ω
is recommended.
These monolithic protection devices are fabricated in ion-implanted planar vertical power structures for high
reliability and in normal system operation they are virtually transparent. The TISP61089A buffered gate
design reduces the loading on the SLIC supply during overvoltages caused by power cross and induction.
The TISP61089A is available in 8-pin plastic small-outline surface mount package and 8-pin plastic dual-in-
line package.
absolute maximum ratings
RATING
Repetitive peak off-state voltage, I
G
= 0, -40°C
≤
T
J
≤
85°C
Repetitive peak gate-cathode voltage, V
KA
= 0, -40°C
≤
T
J
≤
85°C
Non-repetitive peak on-state pulse current (see Notes 1 and 2)
10/1000 µs (Bellcore GR-1089-CORE, Issue 1, November 1994, Section 4)
5/320 µs (ITU-T recommendation K20 & K21, open-circuit voltage wave shape 10/700)
1.2/50 µs (Bellcore GR-1089-CORE, Issue 1, November 1994, Section 4, Alternative)
2/10 µs (Bellcore GR-1089-CORE, Issue 1, November 1994, Section 4)
Non-repetitive peak on-state current, 60 Hz (see Notes 1 and 2)
0.1 s
1s
5s
300 s
900 s
Non-repetitive peak gate current, 1/2 µs pulse, cathodes commoned (see Notes 1 and 2)
Operating free-air temperature range
Junction temperature
Storage temperature range
I
GSM
T
A
T
J
T
stg
I
TSM
10
4.4
2.1
0.84
0.83
40
-40 to +85
-40 to +150
-40 to +150
A
°C
°C
°C
A
I
TSP
30
40
100
120
A
SYMBOL
V
DRM
V
GKRM
VALUE
-120
-120
UNIT
V
V
NOTES: 1. Initially the protector must be in thermal equilibrium with -40°C
≤
T
J
≤
85°C. The surge may be repeated after the device returns to
its initial conditions.
2. The rated current values may be applied either to the Ring to Ground or to the Tip to Ground terminal pairs. Additionally, both
terminal pairs may have their rated current values applied simultaneously (in this case the Ground terminal current will be twice the
rated current value of an individual terminal pair). Above 85°C, derate linearly to zero at 150°C lead temperature.
recommended operating conditions
MIN
C
G
R
S
Gate decoupling capacitor
TISP61089A series resistor for first-level and second-level surge survival
TISP61089A series resistor for first-level surge survival
100
40
25
TYP
220
MAX
UNIT
nF
Ω
PRODUCT
2
INFORMATION
POINN [ POWER INNOVATIONS LTD ]
