2 layers228.6 × 100 mm
Mongus48
ChrisChrisLoLo/beyblock20
The magnetic, modular, 20-key macropad that can join together to form an ortholinear board
124 parts335GPL-3.0
Overview
The LL4148 is a switching Diode made by MDD in a LL-34 package with 2 pins. 1 Independent 1V@10mA 200mA 4A 4ns 500mW 5uA@75V 75V LL-34 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. 1,936,654 are in stock at JLCPCB (part C435829). 254 open-source boards in 186 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
4- Junction, hottest
- 175 °C · maximum junction temperature · p. 1
- Forward current, most
- 200 mA · maximum average rectified forward current at Ta = 25 °C · p. 1
- Reverse voltage, most
- 75 V · maximum reverse voltage · p. 1
- Forward voltage
- 1 V · maximum at IF = 10 mA · p. 2
What it is and has
2- Construction
- Silicon Epitaxial Planar Switching Diode · p. 1
- Package
- LL-34 · p. 1
Specifications
19| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Peak Reverse Voltage VRM | Ta = 25 °C | max 100 V | 1 |
| Reverse Voltage VR | Ta = 25 °C | max 75 V | 1 |
| Average Rectified Forward Current IF(AV) | Ta = 25 °C | max 200 mA | 1 |
| Non-repetitive Peak Forward Surge Current IFSM | Ta = 25 °C, at t = 1 s | max 0.5 A | 1 |
| Non-repetitive Peak Forward Surge Current IFSM | Ta = 25 °C, at t = 1 ms | max 1 A | 1 |
| Non-repetitive Peak Forward Surge Current IFSM | Ta = 25 °C, at t = 1 us | max 4 A | 1 |
| Power Dissipation Ptot | Ta = 25 °C; valid provided that electrodes are kept at ambient temperature | max 500 mW | 1 |
| Junction Temperature Tj | max 175 °C | 1 | |
| Storage Temperature Range Tstg | min -65 · max 175 °C | 1 | |
| Forward Voltage VF | at IF = 10 mA | max 1 V | 2 |
| Leakage Current IR | at VR = 20 V | max 25 nA | 2 |
| Leakage Current IR | at VR = 75 V | max 5 uA | 2 |
| Leakage Current IR | at VR = 20 V, Tj = 150 OC | max 50 uA | 2 |
| Reverse Breakdown Voltage V(BR)R | tested with 100 uA Pulses | min 100 V | 2 |
| Capacitance Ctot | at VR = 0, f = 1 MHz | max 4 pF | 2 |
| Voltage Rise when Switching ON Vfr | tested with 50 mA Forward Pulses; tp = 0.1 s, Rise Time < 30 ns, fp = 5 to 100 KHz | max 2.5 V | 2 |
| Reverse Recovery Time trr | at IF = 10 mA to IR = 1 mA, VR = 6 V, RL = 100 Ω | max 4 ns | 2 |
| Thermal Resistance Junction to Ambient Air RthA | Valid provided that electrodes are kept at ambient temperature | max 0.35 K/mW | 2 |
| Rectification Efficiency ηV | at f = 100 MHz, VRF = 2 V | min 0.45 - | 2 |
Parameters
11- Current - Rectified
- 200mA
- Diode Configuration
- 1 Independent
- Junction Temperature(Max)
- 175℃
- Non-Repetitive Peak Forward Surge Current
- 4A
- Operating Junction Temperature Range
- +175℃@(Tj)
- Pd - Power Dissipation
- 500mW
- Reverse Leakage Current (Ir)
- 5uA@75V
- Reverse Recovery Time (trr)
- 4ns
- Voltage - DC Reverse(Vr)
- 75V
- Voltage - Forward(Vf)
- 1V
- Voltage - Forward(Vf@If)
- 1V@10mA
Order codes
1- LL4148LCSC C435829
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 254- 2 layers80 × 129.1 mm
Smart Plant
JGAguado/Smart_Plant
The Smart Plant is a board that can be plugged directly on the soil, close to the plant, that allows the measurement of the environment (soil moisture, environment temperature & illuminance), and presents the…
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- 4 layers38.4 × 128.5 mm
- 2 layers275 × 200 mm
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HANmodule
Asbjoern/Kamstrup-Radius-Interface
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46 parts42
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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?
LL-34, with 2 pins. Its footprint is drawn on this page.
Where is the LL4148 datasheet?
MDD publishes it: the Datasheet link on this page opens it.
Where can I order the LL4148?
JLCPCB lists it as part C435829, with 1,936,654 in stock; the sellers' links on this page open their listings.
What can replace the LL4148?
Parts like it in the library: the LL4148PF by STMicroelectronics, the LL4148-GS08 by Vishay Intertechnology, the LL4148 by LGE and the FDLL4148 by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LL4148?
254 boards in 186 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
LL4148PF
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MiniMELF-55℃~+175℃@(Tj) 1 Independent 100V 1V@10mA 200mA 25nA@20V 2A 4ns 500mW SOD-80C Switching Diodes ROHSonsemiSwitching DiodesLL4148 LL34
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