Diodes SBR8U20SP5Q - Manual (Page 3)

SBR8U20SP5Q
SBR and POWERDI are registered trademarks of Diodes Incorporated .
SBR8U20SP5
Document number: DS36325 Rev.1 - 2
3 of 4
www.diodes.com
June 2013
© Diodes Incorporated
0 5 10 15 20
I,
I
N
S
T
A
N
T
A
N
E
O
U
S
R
EV
E
R
SE
C
U
R
R
E
N
T
(µ
A
)
R 10
100
1,000
10,000
100,000
Fig. 3 Typical Reverse Characteristics
V , INSTANTANEOUS REVERSE VOLTAGE (V)
R
T = 25°C
A
T = 85°C
A
T = 125°C
A
0
2
4
6
8
10
12
25 50 75 100 125 150
T , AMBIENT TEMPERATURE (°C)
A
Fig. 4 Forward Current Derating Curve
I,
A
V
E
R
A
G
E F
O
R
WA
R
D
C
U
R
R
ENT (
A
)
F
175
Based on Lead Temp (T )
L
100
1000
10000
0 5 10 15 20
V , DC REVERSE VOLTAGE (V)
Fig. 5 Total Capacitance vs. Reverse Voltage
R
C
,
T
O
T
AL
C
A
P
A
C
IT
AN
C
E (
p
F)
T
0
25
50
75
100
125
150
0 2 4 6 8 10 12 14 16 18 20
V , DC REVERSE VOLTAGE (V)
Fig. 6 Operating Temperature Derating
R
T
, D
E
R
A
T
ED AM
BI
E
N
T
T
EM
P
E
R
A
T
U
R
E (
C
)
A

10
100
1000
10000
10.0 100.0 1000.0 10000.0
P
,
M
AXI
M
U
M
AV
A
L
A
N
C
H
E
P
O
WE
R
(W
)
AR
M
T , PULSE DURATION (µS)
P
Figure 7 Maximum Avalanche Power Curve, Per Element
t1, PULSE DURATION TIME (SEC)
Fig 8 Single Pulse Maximum Power Dissipation
0
100
200
300
400
500
600
700
0.00001 0.001 0.0001 0.01 0.1 1
P
,
P
EA
K
T
R
AN
SI
EN
T
P
O
WE
R
(W)
(P
K
)
Single Pulse
R = 78 C/W 
ja
R = R * r
ja(t)  ja (t)
T -T = P * R
j a ja(t) 
800