W1263YH160
| Model | W1263YH160 |
| Description | Rectifier Diode, 1 Phase, 1 Element, 1263A, 1600V V(RRM), Silicon, |
| PDF file | Total 10 pages (File size: 216K) |
| Chip Manufacturer | LITTELFUSE |
WESTCODE
An IXYS Company
5.3 D.C. Thermal Impedance Calculation
Rectifier Diode Types W1263Y#160 to W1263Y#250
−
t
τ
r
t
=
∑
r
p
⋅
1
−
e
p
p
=
1
p
=
n
Where
p = 1
to
n, n
is the number of terms in the series and:
t = Duration of heating pulse in seconds.
r
t
= Thermal resistance at time t.
r
p
= Amplitude of p
th
term.
τ
p
= Time Constant of r
th
term.
The coefficients for this device are shown in the tables below:
D.C. Single Side Cooled
Term
r
p
1
0.06158
2.13613
2
8.43118×10
1.2129
-3
3
0.01031
0.15024
4
0.01614
0.04244
5
5.0391×10
3.6777×10
-3
-3
τ
p
D.C. Double Side Cooled
Term
r
p
1
0.02
0.33917
2
9.9234×10
0.12691
-3
3
0.01434
0.03562
4
4.284×10
2.563×10
-3
-3
τ
p
6.0 Reverse recovery ratings
(i) Q
ra
is based on 50% I
rm
chord as shown in Fig. 1
Fig. 1
(ii) Q
rr
is based on a 150µs integration time i.e.
150
µ
s
Q
rr
=
(iii)
∫
i
0
rr
.
dt
K Factor
=
t
1
t
2
Data Sheet. Types W1263Y#160 to W1263Y#250 Issue 1
Page 5 of 9
September, 2004
