

Overview
The RB511SM-40FHT2R is a schottky Diode made by ROHM Semiconductor in a SOD-523-2 package with 2 pins. 1 Independent 100mA、100mA 25uA@40V、25uA@40V 40V、40V 410mV@10mA、410mV@10mA 500mA、500mA SOD-523-2 Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Schottky, from KiCad's library) and its footprint (Diode_SMD:D_SOD-523, from KiCad's library), ready for a KiCad board. 70 are in stock at JLCPCB (part C5358485). 2 open-source boards in 1 repository on GitHub use it.
Symbol
Footprint
From the datasheet
4- Reverse voltage, most
- 40 V · VR, max direct reverse voltage · p. 1
- Forward current, most
- 100 mA · Io, max average rectified current, glass epoxy board mounted, 60Hz half sin wave, resistive load · p. 1
- Forward voltage
- 410 mV · VF, max at IF = 10 mA, Tj = 25°C · p. 1
- Junction, hottest
- 125 °C · Tj, max operating junction temperature · p. 1
What it is and has
3- Qualification
- AEC-Q101 Qualified · p. 1
- Package
- SOD-523 · p. 1
- Construction
- Silicon epitaxial planar type · p. 1
Specifications
9| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Repetitive peak reverse voltage VRM | Duty≦0.5 | max 40 V | 1 |
| Reverse voltage VR | Direct reverse voltage | max 40 V | 1 |
| Average forward rectified current Io | Glass epoxy board mounted, 60Hz half sin wave, resistive load | max 100 mA | 1 |
| Non-repetitive forward current surge peak IFSM | 60Hz half sin wave, Non-repetitive at Ta=25ºC, 1cycle | max 0.5 A | 1 |
| Operating junction temperature Tj | - | max 125 °C | 1 |
| Storage temperature Tstg | - | min -55 · max 125 °C | 1 |
| Forward voltage VF | IF=10mA | max 0.41 V | 1 |
| Reverse current IR1 | VR=10V | max 4 mA | 1 |
| Reverse current IR2 | VR=40V | max 25 mA | 1 |
Pins, by the datasheet
2- 1 Cathode
- Cathode. · p. 1
- 2 Anode
- Anode. · p. 1
Parameters
8- Current - Rectified
- 100mA
- Diode Configuration
- 1 Independent
- Junction Temperature(Max)
- 125℃
- Non-Repetitive Peak Forward Surge Current
- 500mA
- Reverse Leakage Current (Ir)
- 25uA@40V
- Voltage - DC Reverse(Vr)
- 40V
- Voltage - Forward(Vf)
- 410mV
- Voltage - Forward(Vf@If)
- 410mV@10mA
Order codes
1- RB511SM-40FHT2RLCSC C5358485
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 2- 2 layers125.5 × 66 mm

- 2 layers70 × 65 mm

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Is there a KiCad symbol and footprint for the RB511SM-40FHT2R?
Yes. The symbol is Device:D_Schottky and the footprint Diode_SMD:D_SOD-523, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the RB511SM-40FHT2R?
SOD-523-2, with 2 pins. Its footprint is drawn on this page.
Where is the RB511SM-40FHT2R datasheet?
ROHM Semiconductor publishes it: the Datasheet link on this page opens it.
Where can I order the RB511SM-40FHT2R?
JLCPCB lists it as part C5358485, with 70 in stock; the sellers' links on this page open their listings.
What can replace the RB511SM-40FHT2R?
Parts like it in the library: the BAS516-QX by Nexperia, the B5819WT by hongjiacheng, the SD103AWT by hongjiacheng and the B5819WT by GOODWORK. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the RB511SM-40FHT2R?
2 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
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