LL4148/LL4448/LL914B
500mW High Speed SMD Switching Diode
Small Signal Diode
Fast switching device(Trr<4.0nS)
Surface device type mounting
Moisture sensitivity level 1
Matte Tin (Sn) Terminal Finish
Pb free version and RoHS compliant
Min Max Min Max
Case : Mini-MELF Package (JEDEC DO-213AC) 3.30 3.70 0.130 0.146
High temperature soldering guaranteed : 270°C/10s 1.40 1.60 0.055 0.063
0.25 0.40 0.010 0.016
1.25 1.40 0.049 0.055
Suggested PAD Layout
Package
LL34
LL34
LL34
LL34
LL34
LL34
Maximum Ratings
Notes:1. Test Condition : 8.3ms Single half Sine-Wave Superimposed on Rated Load (JEDEC Method)
Notes:2. Valid provided that electrodes are kept at ambient temperature
Repetitive peak Forward Current IFRM 500 mA
Part No.
LL4148 L0
LL4448 L0
Packing
10K / 13" Reel
10K / 13" Reel
2.5K / 7" Reel
Peak Forward Surge Current (Note 1) tp=1us
LL4148 L1
LL4448 L1
Rating at 25°C ambient temperature unless otherwise specified.
Type Number
LL914B L1 2.5K / 7" Reel
2.5K / 7" Reel
VR
Power Dissipation
Repetitive Peak Reverse Voltage
Symbol
Reverse Voltage
PD
VRRM
Junction and Storage Temperature Range
Mean Forward Current
IFM
IF(AV)
TJ, TSTG
RθJAThermal Resistance (Junction to Ambient) (Note 2)
Non-Repetitive Peak Forward Current
Forward Continuous Current IF
mA
°C
-65 to + 200
450
150
°C/W
300
mA
300 mA
75
D
500
100
Mini-MELF (LL34)
Units
V
V
mW
HERMETICALLY SEALED GLASS
Weight : approx. 31 mg
Maximum Ratings and Electrical Characteristics
Features
Mechanical Data Unit (mm)
Dimensions
A
B
C
All External Surfaces are Corrosion Resistant and
Leads are Readily Solderable
Value
Unit (inch)
IFSM 2A
Polarity : Indicated by cathode band
Ordering Information
LL914B L0 10K / 13" Reel
2.00
0.079
2.50
0.098
1.25
0.049
0.197
5.00
Version : G12
LL4148/LL4448/LL914B
500mW High Speed SMD Switching Diode
Small Signal Diode
Electrical Characteristics
IR=100uA
IR=5uA
Forward Voltage
LL4448, LL914B IF=5.0mA
LL4148 IF=50.0mA
LL4448, LL914B IF=100.0mA
VR=20V
VR=75V
Junction Capacitance VR=0, f=1.0MHz
Reverse Recovery Time (Note 3)
Notes:3. Reverse Recovery Test Conditions: I F=IR=10mA, RL=100Ω, IRR=1mA
Tape & Reel specification
178 ± 1 330 ± 1
55 Min 100Min
14.4max
Symbol
C
d
13.0 ± 0.20
1.75 ±0.10
8.00 ±0.30
D1
1.50 ± 0.10
0.23±0.005
Item
Carrier width
Carrier length
Carrier depth
Sprocket hole
Reel outside diameter
Reel inner diameter
Feed hole width
Sprocke hole position
1.83 ±0.10
3.73 ±0.10
1.80 ±0.10
D2
D
A
B
3.50 ±0.05 F
P0
Overall tape thickness T
Punch hole position
Sprocke hole pitch
Embossment center
4.00 ±0.10
2.00 ±0.05
Trr 4.0
Reel width W1
P1
Tape width W
E
ns
1.0
Reverse Leakage Current IR
25
5.0
VF
CJ
0.62 0.72
pF4.0
1.0
Reverse Breakdown Voltage V(BR)
100
75
Symbol Min Max Units
Dimension(mm)
μA
nA
V
Maximum Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specified.
V
Type Number
Top Cover Tape
Carieer Ta
p
e
An
y
Additional Label
(
If Re
q
uired
)
TSC label
Direction of Feed
T
C
dP1
P0
A
B
F
W
E
W1
D1D2
D
Version : G12
LL4148/LL4448/LL914B
500mW High Speed SMD Switching Diode
Small Signal Diode
Rating and Sharacteristic Curves
FIG 1 Typical Forward Characteristics
0
300
600
900
1200
1500
0.001 0.01 0.1 1 10 100 1000
FIG 2 Reverse Current vs Reverse Voltage
0.01
0.1
1
10
100
0 20 40 60 80 100 120
Reverse Current (uA)
FIG 3 Admissible Power Dissipation Curve
0
100
200
300
400
500
600
0 50 100 150 200
Power Dissipation (mW)
FIG 5 Forward Resistance vs. Forward Current
1
10
100
1000
10000
0 0 1 10 100
Forward Current (mA)
Dynamic Forward Resistance (Ώ)
Ta=25°
Ta=25°C
Instantaneous Forward Voltage (V) Reverse Voltage (V)
Reverse Voltage (V)
Ambient Temperature (°C)
0.1
Version : G12
Instantaneous Forward Current (mA)