LL4148/MM4148
SMALL SIGNAL SWITCHING DIODE
MINI MELF
FEATURES
Silicon epitaxial planar diode
Fast switching diodes
500mw power dissipation
High temperature soldering guaranteed
250 C/10S at terminals
0.063(1.6)
0.055(1.4)
DIA.
0.020(0.5)
0.012(0.3)
0.146(3.7)
0.130(3.3)
0.020(0.5)
0.012(0.3)
MECHANICAL DATA
Case:
MINI MELF glass sealed envelope.
Terminals:
Plated axial leads, solderable per MIL-STD-750,
Method 2026
Polarity:
Color band denotes cathode end
Mounting Position:
Any
Weight:0.002
ounce, 0.05 grams
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%.
SYMBOLS
LL4148/MM4148
UNITS
VOLTS
VOLTS
mAmps
C
J
Operating junction and storage temperature range
T
J
,
T
STG
NOTES:
1.Test condition:I
F
=10mA,I
R
=10mA,I
rr
=1mA,V
R
=6V,R
L
=100W.
2.Measured at 1.0 MHz and applied reverse voltage of 4.0 volts
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum average forward rectified current
0.375”(9.5mm) lead length at T
A
=75 C
Peak forward surge current
8.3ms single half sine-wave superimposed on
rated load (JEDEC Method)
Maximum instantaneous forward voltage at 10mA
Maximum DC reverse current
T
A
=25 C V
R
=75V
at rated DC blocking voltage
T
A
=100 C V
R
=20V
Maximum reverse recovery time
(NOTE 1)
Typical junction capacitance (NOTE 2)
V
RRM
V
RMS
I
(AV)
100
75
150
I
FSM
V
F
I
R
t
rr
500
1.0
5.0
50
4.0
4.0
-65 to +200
mAmps
Volts
u
A
ns
pF
C
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RATINGS AND CHARACTERISTIC CURVES LL4148/MM4148
FIG. 2-REVERSE CURRENT VERSUS CONTINUOUS
REVERSE VOLTAGE (TYPICAL VALUES)
INSTANTANEOUS REVERSE CURRENT,
MICROAMPERES
1
FIG. 1-ADMISSIBLE POWER DISSIPATION
VERSUS AMBIENT TEMPERATURE
P,POWER DISSIPATION,MILLIWATTS
800
700
600
500
400
300
200
100
0
0
100
200 C
0.1
0.01
0.001
TJ=25 C
AMBIENT TEMPERATURE, C
0.0001
40
60
80
100
120
PERCENT OF PEAK REVERSE VOLTAGE,%
FIG. 3-FORWARD CHARACTERISTICS
16
INSTANTANEOUS FORWARD
CURRENT,MILLIAMPERES
FIG. 4-RELATIVE CAPACTANCE VERSUS
REVERSE VOLTAGE
C
tot(
v
R
)
RELATIVE CAPACTANCE
C
tot(
0
v
)
14
12
10
8
6
4
2
0
0
1
2V
1.2
1.0
0.8
0.6
INSTANTANEOUS FORWARD VOLEAGE,
V0LTS
0.4
0
5
10V
REVERSE VOLTAGE,VOLTS.
FIG. 5-ADMISSIBLE REPETITIVE PEAK FORWARD CURRENT VERSUS PULSE DURATION
I
FRM,
PEAK FORWARD CURRENT,AMPERES
100
n=tp/T
V=tp/T T=1/fp
tp
10
I
FRM
n=0
0.1
0.2
T
1
0.5
0.1
0.01
0.1
1
10
100
1000ms
tp,PULSE DURATION,ms
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