Diodes
1200V 8Amp Rectifier
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: TK.09/14/22
DK208D Rectifier Diode
Description
Main Features
This DK208D 8A, 1200V rated standard recovery rectifier
diode in a compact TO-252 surface mount package is ideal
as a bypass diode or anti-parallel diode for active switching
component.
Symbol Value Unit
I
F(AV)
8 A
V
RRM
1200 V
Absolute Maximum Ratings
Symbol Parameter Test Conditions Value Unit
I
F(RMS)
RMS forward current
T
C
=130˚C
12.6 A
I
F(AV)
Average forward current 8.0 A
I
FSM
Peak non-repetitive surge current
single half cycle; f = 50Hz;
T
J
(initial) = 25°C
150
A
single half cycle; f = 60Hz;
T
J
(initial) = 25°C
180
I
2
t I
2
t Value for fusing t
p
= 8.3 ms 134 A
2
s
di/dt Critical rate of rise of on-state current f = 50Hz ; T
J
= 50°C 350 A/μs
T
stg
Storage temperature range -40 to 150 °C
T
J
Operating junction temperature range -40 to 150 °C
Schematic Symbol
A (Pin 3)
A (Pin 1)
K (Pin 2)
Applications
Typical applications are high voltage pulse generator using
capacitor discharge such as electric fences and stun guns,
and high voltage DC to DC converter seen in small EV /
E-bike charger systems.
Features & Benefits
• Standard recovery
rectifier
• Voltage capability up to
1200V
• 50Hz surge capability up
to 150A
• High di/dt capability
• Halogen free and RoHS
compliant
RoHS
Diodes
1200V 8Amp Rectifier
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: TK.09/14/22
Electrical Characteristics (T
J
= 25°C, unless otherwise specified)
Symbol Parameter Test Conditions Value Unit
t
rr
Reverse-recovery Time I
F
=0.9A, I
R
=1.5A TYP. 4 μs
Static Characteristics
Symbol Test Conditions Value Unit
V
FM
I
T
= 8A; t
p
= 380μs MAX. 1. 2 V
I
RM
V
RRM
T
J
= 25°C
MAX.
20
μA
T
J
= 125°C 500
T
J
= 150°C 1000
Thermal Resistances
Symbol Parameter Value Unit
R
Ɵ(JC)
Junction to case (AC) 1. 4 °C/W
Figure 1: On-State Current vs. On-State
Voltage (Typical)
Instantaneous Forward Voltage (v
F
) – Volts
Instantaneous Forward Current (i
F
) – Amps
0
20
40
60
80
100
120
0.70.8 0.911.11.2 1.31.4 1.51.6 1.71.8 1.922.1
T
J
= 25°C
Figure 2: Power Dissipation vs. Average Forward On-
State Current (Typical)
Average Forward Current [I
F(AV)
] - Amps
Average Forward Power Dissipation
[P
F(AV)
] - (Watts)
0
2
4
6
8
10
12
0246
81
0