component
BSD5A121V35
Public Made by Adomby adom
BORN TVS, 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.
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BSD5A121V35
BORN · TVS · SOD-523
BSD5A121V35 from BORN, 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 | BORN |
| Package | SOD-523 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage (minimum) | VBR | 13.3 | V | @ IT = 1 mA (VBR@1mA) | 2 | ||
| Maximum Clamping Voltage | VC | 35 | V | @ IPP | 2 | ||
| Maximum Reverse Leakage Current | IR | 1 | μA | @ VRWM | 2 | ||
| Peak Pulse Current | Ipp | 12 | A | tp = 8/20μs | 2 | ||
| Peak Pulse Power | PPP | 500 | W | tp = 8/20μs | 1 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | -15 | 15 | kV | IEC 61000-4-2 air discharge | 2 | |
| ESD per IEC 61000-4-2 (Contact) | VESD | -8 | 8 | kV | IEC 61000-4-2 contact discharge | 2 | |
| Operating Temperature | TJ | -55 | 125 | °C | 2 | ||
| Storage Temperature | TSTG | -55 | 150 | °C | 2 |
CAD (KiCad official)
- Symbol:
BSD5A121V35 - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
bsd5a121v35-etched.step/bsd5a121v35-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bsd5a121v35.step/bsd5a121v35.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BORN datasheet (4 pp, sha256
50fd3e7d61ee54dc, 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).
# BSD5A121V35
**BORN** · TVS · SOD-523
BSD5A121V35 from BORN, 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 | BORN |
| Package | SOD-523 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage (minimum) | VBR | 13.3 | | | V | @ IT = 1 mA (VBR@1mA) | 2 |
| Maximum Clamping Voltage | VC | | | 35 | V | @ IPP | 2 |
| Maximum Reverse Leakage Current | IR | | | 1 | μA | @ VRWM | 2 |
| Peak Pulse Current | Ipp | | | 12 | A | tp = 8/20μs | 2 |
| Peak Pulse Power | PPP | | | 500 | W | tp = 8/20μs | 1 |
| ESD per IEC 61000-4-2 (Air) | VESD | -15 | | 15 | kV | IEC 61000-4-2 air discharge | 2 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -8 | | 8 | kV | IEC 61000-4-2 contact discharge | 2 |
| Operating Temperature | TJ | -55 | | 125 | °C | | 2 |
| Storage Temperature | TSTG | -55 | | 150 | °C | | 2 |
## CAD (KiCad official)
- Symbol: `BSD5A121V35`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `bsd5a121v35-etched.step` / `bsd5a121v35-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsd5a121v35.step` / `bsd5a121v35.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BORN datasheet](docs/bsd5a121v35-datasheet.pdf) (4 pp, sha256 `50fd3e7d61ee54dc`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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).
[Datasheet PDF](docs/bsd5a121v35-datasheet.pdf)