component
B1040X
Public Made by Adomby adom
Changjing Schottky Barrier Diodes (SBD), SOD-523. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownB1040X
Changjing · Schottky Barrier Diodes (SBD) · SOD-523
B1040X from Changjing, in a SOD-523. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOD-523 |
| Category | Diodes |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse voltage | VBR | 40 | V | IR =1mA | 1 | ||
| Reverse current | IR | 10 | 40 | µA | VR =40V | 1 | |
| Forward voltage | VF | 0.35 | 0.38 | V | IF =0.1A | 1 | |
| Forward voltage | VF | 0.37 | 0.4 | V | IF =0.2A | 1 | |
| Forward voltage | VF | 0.42 | 0.49 | V | IF =0.5A | 1 | |
| Forward voltage | VF | 0.47 | 0.55 | V | IF =0.7A | 1 | |
| Forward voltage | VF | 0.51 | 0.61 | V | IF =1A | 1 | |
| Total capacitance | Ctot | 19 | pF | VR=10V, f=1MHz | 1 | ||
| DC reverse voltage | VR | 40 | V | 1 | |||
| Mean rectifying current | IO | 1 | A | 1 | |||
| Non-repetitive Peak Forward Surge Current | IFSM | 7 | A | t=8.3ms | 1 | ||
| Power Dissipation | PD | 0.5 | W | 1 | |||
| Thermal Resistance from Junction to Ambient | RθJA | 250 | ℃/W | 1 | |||
| Operating Junction Temperature Range | TJ | -40 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
B1040X - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
b1040x-etched.step/b1040x-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);b1040x.step/b1040x.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
93c24fd88ef2cede, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).