Thyristors
25 Amp High Temperature Alternistor Triacs
Figure 5: Power Dissipation (Typical) vs. RMS
Figure 6: Maximum Allowable CaseTemperature
vs. RMS On-State Current
On-State Current
160
35
30
25
20
15
10
5
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 360°
QJxx25RHy/QJxx25NHy
140
QJxx25KH6
QJxx25JH6
120
QJxx25LHy
100
80
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 360°
0
60
0
5
10
15
20
25
0
5
10
15
20
25
30
RMS On-State Current [IT(RMS)] -- Amps
RMS On-State Current [IT(RMS)] - Amps
Figure 8: Surge Peak On-State Current vs. Number of Cycles
1000
SUPPLY FREQUENCY: 60 Hz Sinusoidal
LOAD: Resistive
RMS On-State Current: [IT(RMS)]: Maximum Rated Value at
Specified Case Temperature
Notes:
1. Gate control may be lost during and immediately
following surge current interval.
2. Overload may not be repeated until junction
temperature has returned to steady-state
rated value.
100
10
1
10
100
1000
Surge Current Duration -- Full Cycles
Soldering Parameters
Reflow Condition
Pb – Free assembly
150°C
tP
-Temperature Min (Ts(min)
-Temperature Max (Ts(max)
-Time (min to max) (ts)
)
TP
TL
Pre Heat
)
200°C
Ramp-up
60 – 180 secs
tL
Average ramp up rate (LiquidusTemp) (TL) to peak 5°C/second max
TS(max)
TS(min)
25
T
S(max) toTL - Ramp-up Rate
5°C/second max
217°C
Ramp-down
Preheat
-Temperature (TL) (Liquidus)
-Temperature (tL)
Reflow
60 – 150 seconds
260+0/-5 °C
tS
PeakTemperature (TP)
Time within 5°C of actual peakTemperature (tp)
Ramp-down Rate
20 – 40 seconds
5°C/second max
8 minutes Max.
280°C
time to peak temperature
Time
Time 25°C to peakTemperature (TP)
Do not exceed
©2019 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 10/29/19