BYC8X-600_2 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 13 March 2009 3 of 9
NXP Semiconductors
BYC8X-600
Hyperfast rectifier diode, low switching loss
5. Thermal characteristics
Fig 1. Forward power dissipation as a function of
average forward current; sinusoidal waveform;
maximum values
Fig 2. Forward power dissipation as a function of
average forward current; square waveform;
maximum values
003aab471
0
4
8
12
16
20
02468
I
F(AV)
(A)
P
tot
(W)
a = 1.57
1.9
2.2
2.8
4.0
003aab472
0
5
10
15
20
25
30
04812
I
F(AV)
(A)
P
tot
(W)
δ
=1
0.5
0.2
0.1
Table 5. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
R
th(j-h)
thermal resistance from
junction to heatsink
with heatsink compound; see Figure 3 --4.8K/W
R
th(j-a)
thermal resistance from
junction to ambient free
air
-55-K/W
Fig 3. Transient thermal impedance from junction to heatsink as a function of pulse width
001aaf045
1
10
−1
10
Z
th(j-h)
(K/W)
10
−3
10
−2
t
p
(s)
10
−6
10110
−1
10
−5
10
−3
10
−2
10
−4
t
p
t
p
T
P
t
T
δ =
