WEITRON
* “G” Lead(Pb)-Free
Features:
*High Speed
4ns
*Low Rever Leakage Current
*Small Outline Surface Mount SOT-23 Package
MMBD4148
SWITCHING DIODE
200mAMPERS
100VOLTS
Surface Mount Switching Diode
3
1
2
SOT-23
SOT-23 Outline Dimensions
A
Unit:mm
TOP VIEW
B
C
E
G
H
D
K
L
J
M
Dim Min Max
A
0.35 0.51
B
1.19 1.40
C
2.10 3.00
D
0.85 1.05
E
0.46 1.00
G
1.70 2.10
H
2.70 3.10
J
0.01 0.13
K
0.89 1.10
L
0.30 0.61
M
0.076 0.25
WEITRON
http://www.weitron.com.tw
MMBD4148
Maximum Ratings
Rating
Reverse Voltage
Forward Current
Peak Forward Surge Current
Symbol
V
R
I
F
I
FM(Surge)
Value
100
200
500
WE IT R ON
Unit
Vdc
mAdc
mAdc
T her mal C har acter istics
Characterictics
Total Device Dissipation FR-5
Board T
A
=25 C
Thermal Resistance, Junction
to Ambient
Junction and Storage
Temperature
Symbol
P
D
R
q
JA
TJ, T
stg
Max
500
Unit
mW
C/W
C
556
-55 to + 150
Electrical Characteristics
(T
A
=25 C Unless Otherwise note)
Characterictics
Symbol
Min
Max
Unit
Off Characteristics
Reverse Breakdown Votalge
(IR=100µAdc)
Forward Voltage(IF=10mAdc)
Reverse Voltage
Leakage Current
(V
R
=20Vdc)
(V
R
=75Vdc)
V(BR)
V
F
I
R
C
T
trr
100
1000
0.025
5.0
4.0
4.0
Vcc
mVdc
µAdc
PF
ns
Diode Capacitance
(V
R
=0, f=1.0MHz)
Revarse Recover Time
(I
F
=I
R
=10mAdc)
1. FR-5=1.0x0.75x0.062 in
2.Alumina=0.4x0.3x0.024 in. 99.5% alumina.
Device Marking
Item
MMBD4148
Marking
5D
Eqivalent Circuitdiagram
3
1
WEITRON
http://www.weitron.com.tw
MMBD4148
820
+10V
2.0K
100 µH
0.1µF
D.U.T.
50 OUTPUT
PULSE
GENERATOR
50 INPUT
SAMPLING
OSCILLOSCOPE
VR
IF
0.1µF
tr
10%
tp
t
IF
WE IT R ON
trr
t
90%
INPUT SIGNAL
IR
IR(REC)=1.0mA
OUTPUT PULSE
(IF=IR=10mA, MEASURED
AT IR(REC)=1.0mA
Notes:1. A 2.0 k variable resistor for a Forward Current (IF) 0f 10 mA
2. Input pules is adjusted so IR(peak) is equal to 10 mA
»
3. tp trr
Figure 1. Recovery Time Equivalent Test Circuit
100
IF, FORWARD CURRENT (mA)
10
IR, REVERSE CURRENT (µA)
TA=150 C
1.0
TA=85 C
10
TA= -40 C
TA=125 C
0.1
TA=85 C
1.0
TA=25 C
TA=55 C
0.01
0.1
0.2
0.4
0.6
0.8
1.0
1.2
0.001
TA=25 C
0
10
20
30
40
50
VR, REVERSE VOLTAGE (VOLTS)
Figure 2. Forward Voltage
VF, FORWARD VOLTAGE (VOLTS)
Figure 3. Leakage Current
0.68
CD, DIODE CAPACITANCE (pF)
0.64
0.60
0.56
0.52
0
2
4
6
8
VR, REVERSE VOLTAGE (VOLTS)
Figure 4. Capacitance
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