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Revised: November 1, 2010 05:04 PM
?2010 Littelfuse, Inc
Teccor?
brand Thyristors
Specifcations are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
15 / 20 / 25 Amp Rectifers
Dxx15L & Dxx20L & Dxx25L Series
70
75
80
85
90
95
100
105
110
115
120
125
130
024681012141618
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
Dxx25L
Dxx20L
Dxx15L
Average Forward Current [IF(AVE)] - Amps
M
axi
mu
m
Al
lo
wa
bl
e
C
ase
Te
mp
er
at
ur
e
(T
C
)
-
°C
Figure 3:
Maximum Allowable Case Temperature vs.
Average On-State Current
Figure 4: Surge Peak On-State Current vs.
Number of Cycles
Note: xx = voltage
1
10
100
1000
110100
1000
Surge Current Duration -- Full Cycles
Dxx15L
Dxx25L
Dxx20L
P
eak
Su
rg
e
(N
on-
rep
et
it
iv
e)
For
w
ard
Cu
rren
t
(I
FS
M
)
–
Amp
s
Supply Frequency: 60Hz Sinusoidal
Load: Resistive
RMS Forward Current : [IT(RMS)]: Maximum Rated
Value at Specifc Case Temperature
Soldering Parameters
Refow Condition
Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (min to max) (ts)
60 – 180 secs
Average ramp up rate (Liquidus Temp)
(TL) to peak
5°C/second max
TS(max)
to T
L
- Ramp-up Rate
5°C/second max
Refow
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
Peak Temperature (TP)
260°C +0/-5
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Ramp-down Rate
5°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
280°C
Time
Te
mperatur
e
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
PreheatPreheat
Ramp-uRamp-upp
Ramp-dowRamp-do
n
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