Description:
The NTE5550 thru NTE5558 SCR’s are designed primarily for half−wave AC control applications,
such as motor controls, heating controls and power supply crowbar circuits.
Features:
D Glass Passivated Junctions with Center Gate Fire for Greater Parameter Uniformity and Stability.
D Small, Rugged, Thermowatt Constructed for Low Thermal Resistance, High Heat Dissipation
and Durability.
D Blocking Voltage to 800 Volts
D 300A Surge Current Capability
Absolute Maximum Ratings:
Peak Reverse Blocking Voltage (Note 1), V
NTE5550
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NTE5552
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NTE5554
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NTE5556
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NTE5558
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forward Current (T
= +85°C), I
C
(All Conduction Angles), I
Peak Non−Repetitive Surge Current (8.3ms), I
(1/2 Cycle, Sine Wave, 1.5ms)
Forward Peak Gate Power, P
Forward Average Gate Power, P
Forward Peak Gate Current, I
Operating Junction Temperature Range, T
Storage Temperature Range, T
Thermal Resistance, Junction−to−Case, R
Note 1. V
for all types can be applied on a continuous dc basis without incurring damage.
RRM
Ratings apply for zero or negative gate voltage. Devices should not be tested for block-
ing capability in a manner such that the voltage supplied exceeds the rated blocking
voltage.
NTE5550 thru NTE5558
Silicon Controlled Rectifier (SCR)
25 Amp, TO220
RRM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T(RMS)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T(AV)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TSM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G(AV)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
thJC
50V
200V
400V
600V
800V
25A
16A
300A
350A
20W
0.5W
2A
−40° to +125°C
−40° to +150°C
1.5°C/W