Mar-10-2004
1
SMBD914/MMBD914...
Silicon Switching Diode
• For high-speed switching applications
SMBD914/MMBD914
3
1 2
Type Package Configuration Marking
SMBD914/MMBD914 SOT23 single s5D
Maximum Ratings at T
A
= 25°C, unless otherwise specified
Parameter Symbol Value Unit
Diode reverse voltage VR100 V
Peak reverse voltage VRM 100
Forward current IF250 mA
Non-repetitive peak surge forward current
t = 1 µs
t = 1 s
IFSM
4.5
0.5
A
Total power dissipation
TS ≤ 54°C
Ptot 370 mW
Junction temperature T
j
150 °C
Storage temperature Tst
g
-65 ... 150
Thermal Resistance
Parameter Symbol Value Unit
Junction - soldering point1)
SMBD914/MMBD914
RthJS ≤ 260 K/W
1For calculation of RthJA please refer to Application Note Thermal Resistance
Mar-10-2004
2
SMBD914/MMBD914...
Electrical Characteristics at TA = 25°C, unless otherwise specified
Parameter Symbol Values Unit
min. typ. max.
DC Characteristics
Breakdown voltage
I(BR) = 100 µA
V(BR) 100 - - V
Reverse current
VR = 20 V
VR = 75 V
VR = 20 V, TA = 150 °C
VR = 75 V, TA = 150 °C
IR
-
-
-
-
-
-
-
-
0.025
0.1
30
50
µA
Forward voltage
IF = 1 mA
IF = 10 mA
IF = 50 mA
IF = 100 mA
IF = 150 mA
VF
-
-
-
-
-
-
-
-
-
-
715
855
1000
1200
1250
mV
AC Characteristics
Diode capacitance
VR = 0 V, f = 1 MHz
CT- - 2 pF
Reverse recovery time
IF = 10 mA, IR = 10 mA, measured at IR = 1mA ,
RL = 100 Ω
trr - - 4 ns
Test circuit for reverse recovery time
EHN00019
Ι
F
D.U.T.
Oscillograph
Pulse generator: tp = 100ns, D = 0.05, tr = 0.6ns,
Ri = 50Ω
Oscillograph: R = 50Ω, tr = 0.35ns, C ≤ 1pF
Mar-10-2004
3
SMBD914/MMBD914...
Reverse current IR = ƒ (TA)
VR = Parameter
0 25 50 75 100 °C 150
TA
1
10
2
10
3
10
4
10
5
10
nA
IR
70 V
25 V
Forward Voltage VF = ƒ (TA)
IF = Parameter
0
0.5
1.0
0 50 100 150
SMBD 914 EHB00114
V
T
A
V
F
˚C
Ι
F
= 100 mA
10 mA
1 mA
0.1 mA
Forward current IF = ƒ (VF)
TA = 25°C
0
0
EHB00137SMBD 7000
Ι
0.5 1.0 V 1.5
50
100
mA
150
F
F
V
maxtyp
Forward current IF = ƒ (TS)
SMBD914/MMBD914
0 15 30 45 60 75 90 105 120 °C 150
TS
0
50
100
150
200
mA
300
IF
Mar-10-2004
4
SMBD914/MMBD914...
Permissible Puls Load RthJS = ƒ (tp)
10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 0
s
tp
-1
10
0
10
1
10
2
10
3
10
K/W
RthJS
0.5
0.2
0.1
0.05
0.02
0.01
0.005
D = 0
Permissible Pulse Load
IFmax/ IFDC = ƒ (tp)
10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 0
s
tp
0
10
1
10
2
10
IFmax/IFDC
D = 0
0.005
0.01
0.02
0.05
0.1
0.2
0.5
