
Overview
The MMSD4148 is a switching Diode made by onsemi in a SOD-123 package with 2 pins. -55℃~+150℃@(Tj) 100V 1V@10mA 200mA 425mW 4ns 5uA@75V Independent SOD-123 Switching Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:MMSD4148, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123, from KiCad's library), ready for a KiCad board. 171,725 are in stock at JLCPCB (part C11177). 16 open-source boards in 14 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
4- Reverse voltage, most
- 100 V · continuous reverse voltage, max · p. 1
- Junction, hottest
- 150 °C · operating junction temperature, max · p. 1
- Junction to air (SOD−123)
- 290 K/W · junction to ambient, FR−5 board, max · p. 1
- Forward voltage
- 1 V · IF = 10 mA, TA = 25 °C, max · p. 2
Parameters
12- Current - Rectified
- 200mA
- Diode Configuration
- Standalone
- Junction Temperature(Max)
- 150℃
- Non-Repetitive Peak Forward Surge Current
- 2A
- Operating Junction Temperature Range
- -55℃~+150℃
- Pd - Power Dissipation
- 425mW
- Reverse Leakage Current (Ir)
- 5uA@75V
- Reverse Recovery Time (trr)
- 4ns
- Thermal Resistance(Junction to Ambient)
- 290℃/W
- Voltage - DC Reverse(Vr)
- 100V
- Voltage - Forward(Vf)
- 1V
- Voltage - Forward(Vf@If)
- 1V@10mA
Order codes
4- MMSD4148T1GLCSC C11177
- MMSD4148LCSC C184882
- MMSD4148T3GLCSC C232560
- MMSD4148LCSC C3313007
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 16- 2 layers80 × 38.1 mm

- 2 layers100 × 100 mm

Kicad JE SteinerVCF
promesoft/KicadJE-SteinerVCF
Adoption of the original 1974 steiner VCF THT+SMD - And ICL8083 VCO RevB
182 parts7 - 2 layers93.5 × 149.9 mm

HackPackv4
twilio/hackpack-v4-hardware
Hardware collateral for the Twilio 2018 SIGNAL conference badge.
44 parts6 - 2 layers112 × 79 mm

- 4 layers100 × 100 mm

- 2 layers245.1 × 73.7 mm

- 4 layers41.2 × 80 mm

- 4 layers77.5 × 52.3 mm

X16
jamesratzlaff/Serdaco-X16
I wanted to make a case for the Serdaco DreamBlaster X16. Since I rarely do anything half-way when it comes to visualization, I busted out the datasheets and got to work. This is not a functionally accurate PCB.
136 parts
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<iframe src="https://pcbkit.io/embed/parts/onsemi/MMSD4148" title="MMSD4148 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/MMSD4148.jpg" alt="MMSD4148" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/MMSD4148)Questions
Is there a KiCad symbol and footprint for the MMSD4148?
Yes. The symbol is Diode:MMSD4148 and the footprint Diode_SMD:D_SOD-123, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the MMSD4148?
SOD-123, with 2 pins. Its footprint is drawn on this page.
Where is the MMSD4148 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the MMSD4148?
JLCPCB lists it as part C11177, with 171,725 in stock; the sellers' links on this page open their listings.
What can replace the MMSD4148?
Parts like it in the library: the 1N4148W by Jiangsu Changjing Electronics Technology (CJ), the L1N4148WT1G by Leshan Radio (LRC), the MMSD914 by LGE and the MMSD914 by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the MMSD4148?
16 boards in 14 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
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