

Overview
The SS24FL is a schottky Diode made by onsemi in a SOD-123F package with 2 pins. -55℃~+125℃ 1 Independent 100uA@40V 2A 40V 50A 550mV@2A SOD-123F Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Schottky, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123F, from KiCad's library), ready for a KiCad board. 45,006 are in stock at JLCPCB (part C894433). 31 open-source boards in 26 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
5- Reverse voltage, most
- 40 V · Reverse voltage, max · p. 1
- Forward current, most
- 2 A · Average rectified current, max at TA = 75°C · p. 1
- Junction, hottest
- 125 °C · Operating junction temperature, max · p. 1
- Junction to air (SOD−123F)
- 140 K/W · Junction to ambient, typical; minimum recommended pad size on FR4 · p. 2
- Forward voltage
- 550 mV · Forward voltage, max at IF = 2.0 A · p. 2
What it is and has
3- Maximum height
- 1.08 mm · p. 1
- Moisture sensitivity level
- MSL 1 · p. 1
- Mold compound
- Green Mold Compound · p. 1
Specifications
11| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Peak Reverse Voltage VRRM | SS24FL; TA = 25°C | max 40 V | 1 |
| Reverse Voltage VR | SS24FL; TA = 25°C | max 40 V | 1 |
| Average Rectified Current at TA = 75°C IF(AV) | TA = 75°C | max 2 A | 1 |
| Non−Repetitive Peak Forward Surge Current at t = 8.3 ms IFSM | TA = 25°C; t = 8.3 ms | max 50 A | 1 |
| Operating Junction Temperature Range TJ | min -55 · max 125 °C | 1 | |
| Storage Temperature Range TSTG | min -55 · max 125 °C | 1 | |
| Typical Thermal Resistance, Junction−to−Ambient (Note 1) RqJA | TA = 25°C; mounted with minimum recommended pad size, PC board FR4 | typ 140 °C/W | 2 |
| Reverse Breakdown Voltage BVR | SS24FL; TA = 25°C; IR = 500 mA | min 40 V | 2 |
| Forward Voltage VF | SS24FL; TA = 25°C; IF = 2.0 A | max 0.55 V | 2 |
| Reverse Leakage Current IR | SS24FL; TA = 25°C; VR = VRRM | max 100 mA | 2 |
| Reverse Recovery Time Trr | SS24FL; TA = 25°C; IF = 0.5 A, IR = 1 A, Irr = 0.25 A | typ 9.495 ns | 2 |
Pins, by the datasheet
2- 1 Cathode
- Cathode; band indicates cathode. · p. 1
- 2 Anode
- Anode. · p. 1
Ordering codes, by the datasheet
1- SS24FL
- SOD−123F · Top mark GP; Pb−Free/Halogen Free; 3000 / Tape & Reel · p. 2
Parameters
10- Current - Rectified
- 2A
- Diode Configuration
- 1 Independent
- Junction Temperature(Max)
- 125℃
- Non-Repetitive Peak Forward Surge Current
- 50A
- Operating Junction Temperature Range
- -55℃~+125℃
- Reverse Leakage Current (Ir)
- 100uA@40V
- Thermal Resistance(Junction to Ambient)
- 140℃/W
- Voltage - DC Reverse(Vr)
- 40V
- Voltage - Forward(Vf)
- 550mV
- Voltage - Forward(Vf@If)
- 550mV@2A
Order codes
1- SS24FLLCSC C894433
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 31- 4 layers85.6 × 53.8 mm

- 4 layers94.6 × 83.4 mm

Fmcw nightly
matthuszagh/fmcw
6GHz frequency-modulated continuous-wave radar with real-time range detection
446 parts66Apache-2.0 - 2 layers60 × 75 mm

UBike
nategreco/uBike
The Universal Bike Controller is an open-source project aimed at providing a drop-in replacement for the factory console on NordicTrack® S-series exercise bikes
53 parts22GPL-3.0 - 2 layers63.5 × 99.1 mm

- 4 layers88.4 × 63.6 mm

Compute
hstarmans/firestarter
Kicad design files for prism laser direct imager using up5k FPGA and ESP32
125 parts13 - 4 layers70 × 40 mm

Controller
Gustice/LightController
A ESP32 based LED-Controller for various light scenarios
108 parts3MIT - 2 layers18.8 × 35 mm

Can and power
martinroger/MiniR56_RoundGauge_ESP32
An ESP32-based OBD Gauge for the R56 Mini Cooper
39 parts3Apache-2.0 - 2 layers68.9 × 23 mm

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<iframe src="https://pcbkit.io/embed/parts/onsemi/SS24FL" title="SS24FL 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/SS24FL.jpg" alt="SS24FL" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/SS24FL)Questions
Is there a KiCad symbol and footprint for the SS24FL?
Yes. The symbol is Device:D_Schottky and the footprint Diode_SMD:D_SOD-123F, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SS24FL?
SOD-123F, with 2 pins. Its footprint is drawn on this page.
Where is the SS24FL datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the SS24FL?
JLCPCB lists it as part C894433, with 45,006 in stock; the sellers' links on this page open their listings.
What can replace the SS24FL?
Parts like it in the library: the DSK34 by hongjiacheng, the DSK210 by hongjiacheng, the DSK24 by hongjiacheng and the DSK34 by TWGMC. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SS24FL?
31 boards in 26 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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