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ESDBL2105DX-AH
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ST Semtech ESD And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ESDBL2105DX-AH
ST Semtech · ESD And Surge Protection (TVS/ESD) · SOT-23
ESDBL2105DX-AH from ST Semtech, in a SOT-23. 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 | Protected line 1 of the double bidirectional TVS (VRWM 24 V min, breakdown 26.2 to 32 V at 1 mA), shown at the bottom left of the SOT-23 symbol. |
| 2 | 2 | passive | Protected line 2 of the double bidirectional TVS (VRWM 24 V min, breakdown 26.2 to 32 V at 1 mA), shown at the bottom right of the SOT-23 symbol. |
| 3 | 3 | passive | Common pin at the top of the SOT-23 symbol, tied to the internal junction of both TVS diode paths; the datasheet gives no function name for it. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| IEC61000-4-2 (ESD) Air Contact | VESD | -30 | 30 | KV | IEC61000-4-2 Air Contact | 1 | |
| Peak Pulse Power | Ppk | 350 | W | tp = 8/20 µs | 1 | ||
| Peak Current, Pulsed | IPP | 8 | A | tp = 8/20 µs | 1 | ||
| Operating Junction Temperature | Tj | -40 | 125 | °C | 1 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 1 | ||
| Working Peak Reverse Voltage | VRWM | 24 | V | 1 | |||
| Reverse Breakdown Voltage | V(BR)R | 26.2 | 32 | V | at IR = 1 mA | 1 | |
| Reverse Current | IR | 100 | nA | at VRWM = 24 V | 1 | ||
| Clamping Voltage | VC | 40 | V | at IPP = 5 A, tP = 8/20 µs | 1 | ||
| Clamping Voltage | VC | 44 | V | at IPP = 8 A, tP = 8/20 µs | 1 | ||
| Junction Capacitance | Cj | 30 | pF | at VR = 0 V, f = 1 MHz | 1 |
CAD (KiCad official)
- Symbol:
ESDBL2105DX-AH - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
esdbl2105dx-ah-etched.step/esdbl2105dx-ah-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esdbl2105dx-ah.step/esdbl2105dx-ah.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST Semtech datasheet (3 pp, sha256
5fe265c08bb27f34, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(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).
# ESDBL2105DX-AH
**ST Semtech** · ESD And Surge Protection (TVS/ESD) · SOT-23
ESDBL2105DX-AH from ST Semtech, in a SOT-23. 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 | Protected line 1 of the double bidirectional TVS (VRWM 24 V min, breakdown 26.2 to 32 V at 1 mA), shown at the bottom left of the SOT-23 symbol. |
| 2 | 2 | passive | Protected line 2 of the double bidirectional TVS (VRWM 24 V min, breakdown 26.2 to 32 V at 1 mA), shown at the bottom right of the SOT-23 symbol. |
| 3 | 3 | passive | Common pin at the top of the SOT-23 symbol, tied to the internal junction of both TVS diode paths; the datasheet gives no function name for it. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| IEC61000-4-2 (ESD) Air Contact | VESD | -30 | | 30 | KV | IEC61000-4-2 Air Contact | 1 |
| Peak Pulse Power | Ppk | | | 350 | W | tp = 8/20 µs | 1 |
| Peak Current, Pulsed | IPP | | | 8 | A | tp = 8/20 µs | 1 |
| Operating Junction Temperature | Tj | -40 | | 125 | °C | | 1 |
| Storage Temperature Range | Tstg | -55 | | 150 | °C | | 1 |
| Working Peak Reverse Voltage | VRWM | 24 | | | V | | 1 |
| Reverse Breakdown Voltage | V(BR)R | 26.2 | | 32 | V | at IR = 1 mA | 1 |
| Reverse Current | IR | | | 100 | nA | at VRWM = 24 V | 1 |
| Clamping Voltage | VC | | | 40 | V | at IPP = 5 A, tP = 8/20 µs | 1 |
| Clamping Voltage | VC | | | 44 | V | at IPP = 8 A, tP = 8/20 µs | 1 |
| Junction Capacitance | Cj | | | 30 | pF | at VR = 0 V, f = 1 MHz | 1 |
## CAD (KiCad official)
- Symbol: `ESDBL2105DX-AH`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `esdbl2105dx-ah-etched.step` / `esdbl2105dx-ah-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esdbl2105dx-ah.step` / `esdbl2105dx-ah.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ST Semtech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603065691449290752) (3 pp, sha256 `5fe265c08bb27f34`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/esdbl2105dx-ah-datasheet.pdf)