DS12013 Rev. 9 - 3 1 of 2 LL4148 / LL4448
www.diodes.com Diodes Incorporated
Features
LL4148 / LL4448
FAST SWITCHING SURFACE MOUNT DIODE
•Fast Switching Speed
•Surface Mount Package Ideally Suited for Automatic Insertion
•General Purpose Rectification
•Silicon Epitaxial Planar Construction
•Lead Free Finish, RoHS Compliant (Note 2)
Features
•Case: MiniMELF
•Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
•Moisture Sensitivity: Level 1 per J-STD-020C
•Terminals: Finish Sn97.5Ag2.5. Solderable per
MIL-STD-202, Method 208
•Polarity: Cathode Band
•Marking: Cathode Band Only
•Weight: 0.05 grams (approximate)
Mechanical Data
A
C
B
MiniMELF
Dim Min Max
A3.30 3.70
B1.30 1.60
C0.28 0.50
All Dimensions in mm
Characteristic Symbol LL4148 LL4448 Unit
Non-Repetitive Peak Reverse Voltage VRM 100 V
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR75 V
RMS Reverse Voltage VR(RMS) 53 V
Forward Continuous Current (Note 1) IFM 300 500 mA
Average Rectified Output Current (Note 1) IO150 mA
Non-Repetitive Peak Forward Surge Current @ t = 1.0s
@ t = 1.0µs IFSM 1.0
2.0 A
Power Dissipation (Note 1)
Derate Above 25°CPd500
1.68 mW
mW/°C
Thermal Resistance, Junction to Ambient Air (Note 1) RθJA 300 K/W
Operating and Storage Temperature Range Tj , TSTG -65 to +175 °C
Maximum Ratings @ TA = 25°C unless otherwise specified
Notes: 1. Valid provided that device terminals are kept at ambient temperature.
2. EC Directive 2002/95/EC (RoHS) revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied where applicable,
see EU Directive Annex notes 5 and 7.
Characteristic Symbol Min Max Unit Test Condition
Maximum Forward Voltage LL4148
LL4448
LL4448 VFM
0.62
1.0
0.72
1.0 VIF = 10mA
IF = 5.0mA
IF = 100mA
Maximum Peak Reverse Current IRM 5.0
50
30
25
µA
µA
µA
nA
VR = 75V
VR = 70V, Tj = 150°C
VR = 20V, Tj = 150°C
VR = 20V
Capacitance Cj4.0 pF VR = 0, f = 1.0MHz
Reverse Recovery Time trr 4.0 ns IF = 10mA to IR =1.0mA
VR = 6.0V, RL = 100Ω
Electrical Characteristics @ TA = 25°C unless otherwise specified
NOT RECOMMENDED FOR NEW DESIGN
SUGGESTED REPLACEMENT 1N4148W / 1N4448W
NOT RECOMMENDED FOR NEW DESIGN
SUGGESTED REPLACEMENT 1N4148W / 1N4448W
Notes: 3. For packaging details, visit our website at http://www.diodes.com/datasheets/ap02007.pdf.
DS12013 Rev. 9 - 3 2 of 2 LL4148 / LL4448
www.diodes.com
1
10
100
1000
10,000
0 100 200
I , LEAKAGE CURRENT (nA)
R
T, JUNCTION TEMPERATURE (°C)
j
Fig. 2, Leakage Current vs Junction Temperature
V = 20V
R
10
1.0
100
1000
0.1
0.01 0 1 2
I , INSTANTANEOUS FORWARD CURRENT (mA)
F
V , INSTANTANEOUS FORWARD VOLTAGE (V)
FFig. 1 Forward Characteristics
Ordering Information
Device Packaging Shipping
LL4148-7 MiniMELF 2.5K/Tape & Reel, 7- inch
LL4148-13 MiniMELF 10K/Tape & Reel, 13-inch
LL4448-7 MiniMELF 2.5K/Tape & Reel, 7- inch
(Note 3)
IMPORTANT NOTICE
Diodes, Inc. and its subsidiaries reserve the right to make changes without further notice to any product herein to make corrections, modifications, enhance-
ments, improvements, or other changes. Diodes, Inc. does not assume any liability arising out of the application or use of any product described herein;
neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such
use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.
LIFE SUPPORT
The products located on our website at www.diodes.com are not recommended for use in life support systems where a failure or malfunction of the
component may directly threaten life or cause injury without the expressed written approval of Diodes Incorporated.
