component
BSD5C121V
Public Made by Adomby adom
BORN ESD Protection Devices, 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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BSD5C121V
BORN · ESD Protection Devices · SOD-523
BSD5C121V 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power | PPP | 200 | Watts | tp =8/20μs | 2 | ||
| Peak Pulse Current | Ipp | 8 | A | tp =8/20μs (note1) | 2 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | 30 | kV | per IEC 61000-4-2 (Air) | 2 | ||
| ESD per IEC 61000-4-2 (Contact) | VESD | 30 | kV | per IEC 61000-4-2 (Contact) | 2 | ||
| Lead Soldering Temperature | TL | 260 | ℃ | 10 seconds | 2 | ||
| Junction Temperature | TJ | -55 | 150 | ℃ | 2 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 2 | ||
| Reverse Stand-Off Voltage | VRWM | 12 | V | 2 | |||
| Reverse Breakdown Voltage | VBR | 13.3 | V | IT=1mA | 2 | ||
| Reverse Leakage Current | IR | 0.5 | uA | VRWM=12V,T=25℃ | 2 | ||
| Clamping Voltage | VC | 24 | V | IPP=8A,tp=8/20μs | 2 | ||
| Junction Capacitance | Cj | 10 | pF | VR = 0V, f = 1MHz | 2 |
CAD (KiCad official)
- Symbol:
BSD5C121V - Footprint:
Diode_SMD:D_SOD-523 - 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files:
bsd5c121v-etched.step/bsd5c121v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bsd5c121v.step/bsd5c121v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BORN datasheet (4 pp, sha256
f0d2cfc4fc3049c5, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).
# BSD5C121V
**BORN** · ESD Protection Devices · SOD-523
BSD5C121V 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
## 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power | PPP | | | 200 | Watts | tp =8/20μs | 2 |
| Peak Pulse Current | Ipp | | | 8 | A | tp =8/20μs (note1) | 2 |
| ESD per IEC 61000-4-2 (Air) | VESD | | | 30 | kV | per IEC 61000-4-2 (Air) | 2 |
| ESD per IEC 61000-4-2 (Contact) | VESD | | | 30 | kV | per IEC 61000-4-2 (Contact) | 2 |
| Lead Soldering Temperature | TL | | | 260 | ℃ | 10 seconds | 2 |
| Junction Temperature | TJ | -55 | | 150 | ℃ | | 2 |
| Storage Temperature | Tstg | -55 | | 150 | ℃ | | 2 |
| Reverse Stand-Off Voltage | VRWM | | 12 | | V | | 2 |
| Reverse Breakdown Voltage | VBR | | 13.3 | | V | IT=1mA | 2 |
| Reverse Leakage Current | IR | | 0.5 | | uA | VRWM=12V,T=25℃ | 2 |
| Clamping Voltage | VC | | 24 | | V | IPP=8A,tp=8/20μs | 2 |
| Junction Capacitance | Cj | | 10 | | pF | VR = 0V, f = 1MHz | 2 |
## CAD (KiCad official)
- Symbol: `BSD5C121V`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `bsd5c121v-etched.step` / `bsd5c121v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsd5c121v.step` / `bsd5c121v.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BORN datasheet](docs/bsd5c121v-datasheet.pdf) (4 pp, sha256 `f0d2cfc4fc3049c5`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal 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/bsd5c121v-datasheet.pdf)