Littelfuse Dxx25L Series - Manual (Page 3)

381
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor ® brand Thyristors
15 / 20 / 25 Amp Rectifiers
Dxx15L & Dxx20L & Dxx25L Series
70
75
80
85
90
95
100
105
110
115
120
125
130
0 2 4 6 8 10 12 14 16 18
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
Dxx25L
Dxx20L
Dxx15L
Average Forward Current [I
F(AVE)
] - Amps
M
axi
m
u
m
A
ll
o
w
a
b
le C
ase
T
e
m
p
er
at
u
re (
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
1 10 100 1000
Surge Current Duration -- Full Cycles
Dxx15L
Dxx25L
Dxx20L
P
eak S
u
rg
e (
N
o
n
-rep
et
it
iv
e)
F
o
rw
ard
Cu
rren
t (
I FS
M
) – Amp
s
Supply Frequency: 60Hz Sinusoidal
Load: Resistive
RMS Forward Current : [I
T(RMS)
]: Maximum Rated
Value at Specific Case Temperature
Soldering Parameters
Reflow Condition 1Co'SFFBTTFNCMZ
Pre Heat
- Temperature Min (T
s(min)
) 150°C
- Temperature Max (T
s(max)
) 200°C
- Time (min to max) (t
s
) oTFDT
Average ramp up rate (Liquidus Temp)
(T
L
) to peak
5°C/second max
T
S(max)
to T
L
- Ramp-up Rate 5°C/second max
Reflow
- Temperature (T
L
) (Liquidus) 217°C
- Temperature (t
L
) oTFDPOET
Peak Temperature (T
P
) 260°C +0/-5
Time within 5°C of actual peak
Temperature (t
p
)
oTFDPOET
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (T
P
) 8 minutes Max.
Do not exceed 280°C
Time
T
emperature
T
P
T
L
T
S(max)
T
S(min)
25
t
P
t
L
t
S
time to peak temperature
Preheat Preheat
Ramp-up Ramp-up
Ramp-down Ramp-do