

Overview
The B240A is a schottky Diode made by Diodes Incorporated in a SMA package with 2 pins. -65℃~+150℃ 1 Independent 2A 40V 500mV@2A 500uA@40V 50A SMA Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Schottky, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 136,800 are in stock at JLCPCB (part C92506). 19 open-source boards in 12 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
4- Reverse voltage, most
- 40 V · VRWM, maximum working peak reverse voltage, B240/A · p. 2
- Forward current, most
- 2 A · IO, maximum average rectified output current · p. 2
- Forward voltage
- 500 mV · VF, max at IF = 2.0A, TA = +25°C · p. 2
- Junction, hottest
- 150 °C · TJ, maximum operating junction temperature · p. 2
What it is and has
2- Protection
- Guard ring die construction for transient protection · p. 1
- Polarity identification
- Cathode band or cathode notch · p. 1
Specifications
12| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Peak Repetitive Reverse Voltage VRRM | B240/A; single phase, half wave, 60Hz, resistive or inductive load | max 40 V | 2 |
| Working Peak Reverse Voltage VRWM | B240/A; single phase, half wave, 60Hz, resistive or inductive load | max 40 V | 2 |
| DC Blocking Voltage VR | B240/A; single phase, half wave, 60Hz, resistive or inductive load | max 40 V | 2 |
| RMS Reverse Voltage VR(RMS) | B240/A | max 28 V | 2 |
| Average Rectified Output Current IO | Single phase, half wave, 60Hz, resistive or inductive load; for capacitance load, derate current by 20% | max 2 A | 2 |
| Non-Repetitive Peak Forward Surge Current, 8.3ms Single Half Sine-Wave Superimposed on Rated Load IFSM | TA = +25°C | max 50 A | 2 |
| Typical Thermal Resistance, Junction to Lead RθJL | SMA | typ 25 °C/W | 2 |
| Operating and Storage Temperature Range TJ, TSTG | min -65 · max 150 °C | 2 | |
| Forward Voltage Drop VF | B240/A; IF = 2.0A, TA = +25°C | max 0.5 V | 2 |
| Leakage Current (Note 6) IR | @ Rated VR, TA = +25°C; short duration pulse test used to minimize self-heating effect | max 0.5 mA | 2 |
| Leakage Current (Note 6) IR | @ Rated VR, TA = +100°C; short duration pulse test used to minimize self-heating effect | max 20 mA | 2 |
| Total Capacitance CT | VR = 40V, f = 1MHz | max 200 pF | 2 |
Ordering codes, by the datasheet
2- B2xxA-13-F
- SMA · Standard qualification; 5,000/Tape & Reel; B240A uses device type 40 · p. 1
- B240AQ-13-F
- SMA · Automotive qualification; 5,000/Tape & Reel · p. 1
Parameters
9- Current - Rectified
- 2A
- Diode Configuration
- 1 Independent
- Junction Temperature(Max)
- 150℃
- Non-Repetitive Peak Forward Surge Current
- 50A
- Operating Junction Temperature Range
- -65℃~+150℃
- Reverse Leakage Current (Ir)
- 500uA@40V
- Voltage - DC Reverse(Vr)
- 40V
- Voltage - Forward(Vf)
- 500mV
- Voltage - Forward(Vf@If)
- 500mV@2A
Order codes
1- B240A-13-FLCSC C92506
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 19- 4 layers92 × 95 mm

- 4 layers100 × 100 mm

Adau1452 dsp core
EDA-bench/eda-bench
Execution-based benchmark for open-book KiCad PCB reconstruction agents
377 parts4 - 4 layers52.5 × 80 mm

- 4 layers52 × 74 mm

FRC Sensor CAN
barkinvar/sugerCANe
A compact interface for three NPN, PNP or logic sensors on an FRC robot. Each port has a removable 5 V / 12 V power jumper; input type is configured in software.
144 parts1 - 4 layers115 × 75 mm

InduLink-485
8aChristian/InduLink-485
The board follows rigorous IPC (IPC-2152, IPC-2221, IPC-7351) standards, complete with galvanic isolation, industrial transient protection (TVS, Schottky, PTC Polyfuse), a wide-input step-down switching power…
24 partsMIT - 4 layers67.5 × 96.5 mm

- 2 layers85 × 75 mm

Esp32
Hackuarium/esp-32wroom
Start by installing the ESP32 board in Arduino IDE https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-mac-and-linux-instructions/ (Mac/Linux)…
74 parts - 2 layers

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Is there a KiCad symbol and footprint for the B240A?
Yes. The symbol is Device:D_Schottky and the footprint Diode_SMD:D_SMA, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the B240A?
SMA, with 2 pins. Its footprint is drawn on this page.
Where is the B240A datasheet?
Diodes Incorporated publishes it: the Datasheet link on this page opens it.
Where can I order the B240A?
JLCPCB lists it as part C92506, with 136,800 in stock; the sellers' links on this page open their listings.
What can replace the B240A?
Parts like it in the library: the SS34 by MDD, the SS54 by MDD, the SS54 by hongjiacheng and the SS210 by MDD. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the B240A?
19 boards in 12 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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