Overview
The LL4148 is a switching Diode made by LGE in a SOD-80 package with 2 pins. -65℃~+175℃ 1 Independent 100V 150mA 1V@50mA 4ns 500mW SOD-80 Switching Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:LL4148, from KiCad's library) and its footprint (Diode_SMD:D_MiniMELF, from KiCad's library), ready for a KiCad board. 189,253 are in stock at JLCPCB (part C402260).
Symbol
Footprint
From the datasheet
7- Junction, hottest
- 175 °C · maximum operating junction temperature · p. 1
- Junction to air (MINI MELF/SOD-80)
- 350 K/W · junction to ambient air, terminals kept at ambient temperature · p. 1
- Forward current, most
- 300 mA · maximum continuous forward current, terminals kept at ambient temperature · p. 1
- Reverse voltage, most
- 75 V · maximum reverse voltage · p. 1
- Reverse voltage, most
- 100 V · maximum repetitive peak reverse voltage · p. 1
- Forward voltage
- 720 mV · maximum at IF = 5.0 mA · p. 1
- Forward voltage
- 1 V · maximum at IF = 50 mA · p. 1
What it is and has
2- Package
- MINI MELF/SOD-80 · p. 1
- Surge overload
- 2 amperes peak · p. 1
Specifications
16| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Repetitive Peak Reverse Voltage VRRM | 25°C ambient | max 100 V | 1 |
| Reverse Voltage VR | 25°C ambient | max 75 V | 1 |
| Forward Repetitive Peak Current (Note 1) IFRM | 25°C ambient; terminals kept at ambient temperature | max 500 mA | 1 |
| Forward Continuous Current (Note 1) IFM | 25°C ambient; terminals kept at ambient temperature | max 300 mA | 1 |
| Average Forwardt Current IF (AV) | 25°C ambient; single phase, half wave, 60 Hz, resistive or inductive load; derate current by 20% for capacitive load | max 150 mA | 1 |
| Peak Forward Surge Current IFSM | tp=1uS; 25°C ambient | max 2 A | 1 |
| Power Dissipation (Note 1) Pd | 25°C ambient; terminals kept at ambient temperature | max 500 mW | 1 |
| Thermal Resistance Junction to Ambient Air ( Note 1 ) RθJA | MINI MELF/SOD-80; terminals kept at ambient temperature | max 350 K/W | 1 |
| Operating and Storage Temperature Range TJ, TSTG | min -65 · max 175 °C | 1 | |
| Forward Voltage VF | IF=5.0mA; 25°C ambient | min 0.62 · max 0.72 V | 1 |
| Forward Voltage VF | IF= 50mA; 25°C ambient | max 1 V | 1 |
| Peak Reverse Current IR | VR=20V; 25°C ambient | max 25 nA | 1 |
| Peak Reverse Current IR | VR=20V, Tj=150°C | max 50 uA | 1 |
| Peak Reverse Current IR | VR=75V; 25°C ambient | max 5 uA | 1 |
| Junction Capacitance Cj | VR=0, f=1.0MHz; 25°C ambient | max 4 pF | 1 |
| Reverse Recovery Time (Note 2) trr | IF=10mA, VR=6V, Irr=0.1 x IR, RL=100Ω; 25°C ambient | max 4 nS | 1 |
Parameters
11- Current - Rectified
- 300mA
- Diode Configuration
- 1 Independent
- Junction Temperature(Max)
- 175℃
- Operating Junction Temperature Range
- -65℃~+175℃
- Pd - Power Dissipation
- 500mW
- Reverse Leakage Current (Ir)
- 25nA@20V
- Reverse Recovery Time (trr)
- 4ns
- Thermal Resistance(Junction to Ambient)
- 350℃/W
- Voltage - DC Reverse(Vr)
- 100V
- Voltage - Forward(Vf)
- 720mV
- Voltage - Forward(Vf@If)
- 1V@50mA
Order codes
1- LL4148LCSC C402260
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
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Is there a KiCad symbol and footprint for the LL4148?
Yes. The symbol is Diode:LL4148 and the footprint Diode_SMD:D_MiniMELF, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LL4148?
SOD-80, with 2 pins. Its footprint is drawn on this page.
Where is the LL4148 datasheet?
LGE publishes it: the Datasheet link on this page opens it.
Where can I order the LL4148?
JLCPCB lists it as part C402260, with 189,253 in stock; the sellers' links on this page open their listings.
What can replace the LL4148?
Parts like it in the library: the LL4148 by Yangzhou Yangjie Electronic Technology, the LL4448-GS08 by Vishay Intertechnology, the LL4148-M-18 by Vishay Intertechnology and the BAV103 by Guangdong Hottech. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8
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