SZNUP2105LT3G

ONSEMI · Global Sourcing Parts · SOT-23

SZNUP2105LT3G from ONSEMI, 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	ANODE	passive	Datasheet package Style 28 lists pin 1 as ANODE of the bidirectional surge-protection Zener array; the 350 W per-line peak power and 24 V VRWM ratings apply to the line protection, not to this pin in isolation.
2	ANODE	passive	Datasheet package Style 28 lists pin 2 as ANODE of the bidirectional surge-protection Zener array; the datasheet gives no further pin-level limits.
3	ANODE	passive	Datasheet package Style 28 lists pin 3 as ANODE of the bidirectional surge-protection Zener array; the datasheet gives no further pin-level limits.

Key specifications

Parameter	Value
Manufacturer	ONSEMI
Package	SOT-23
Category	Global Sourcing Parts
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
Reverse Working Voltage	VRWM	24			V	(Note 2)	2
Breakdown Voltage	VBR	26.2		32	V	IT = 1 mA (Note 3)	2
Reverse Leakage Current	IR		1.5	100	nA	VRWM = 24 V	2
Clamping Voltage	VC			40	V	IPP = 5 A (8/20 s Waveform) (Note 4)	2
Clamping Voltage	VC			44	V	IPP = 8 A (8/20 s Waveform) (Note 4)	2
Maximum Peak Pulse Current	IPP			8	A	8/20 s Waveform (Note 4)	2
Capacitance	CJ			30	pF	VR = 0 V, f = 1 MHz (Line to GND)	2
Peak Power Dissipation	PPK			350	W	8/20 s Double Exponential Waveform (Note 1)	2
Operating Junction Temperature Range	TJ	-55		150	°C		2
Storage Temperature Range	TJ	-55		150	°C		2
Lead Solder Temperature	TL			260	°C	10 s	2
ESD Human Body Model	ESD			16	kV	HBM	2
ESD Machine Model	ESD			400	V	MM	2
ESD IEC 61000-4-2 Specification	ESD			30	kV	Contact	2

CAD (KiCad official)

Symbol: SZNUP2105LT3G
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)
3D model files: sznup2105lt3g-etched.step / sznup2105lt3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sznup2105lt3g.step / sznup2105lt3g.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: ONSEMI datasheet (8 pp, sha256 b15c6c9d45444cf8, retrieved 2026-10-17, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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

# SZNUP2105LT3G

**ONSEMI** · Global Sourcing Parts · SOT-23

SZNUP2105LT3G from ONSEMI, 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 | ANODE | passive | Datasheet package Style 28 lists pin 1 as ANODE of the bidirectional surge-protection Zener array; the 350 W per-line peak power and 24 V VRWM ratings apply to the line protection, not to this pin in isolation. |
| 2 | ANODE | passive | Datasheet package Style 28 lists pin 2 as ANODE of the bidirectional surge-protection Zener array; the datasheet gives no further pin-level limits. |
| 3 | ANODE | passive | Datasheet package Style 28 lists pin 3 as ANODE of the bidirectional surge-protection Zener array; the datasheet gives no further pin-level limits. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ONSEMI |
| Package | SOT-23 |
| Category | Global Sourcing Parts |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Working Voltage | VRWM | 24 |  |  | V | (Note 2) | 2 |
| Breakdown Voltage | VBR | 26.2 |  | 32 | V | IT = 1 mA (Note 3) | 2 |
| Reverse Leakage Current | IR |  | 1.5 | 100 | nA | VRWM = 24 V | 2 |
| Clamping Voltage | VC |  |  | 40 | V | IPP = 5 A (8/20 s Waveform) (Note 4) | 2 |
| Clamping Voltage | VC |  |  | 44 | V | IPP = 8 A (8/20 s Waveform) (Note 4) | 2 |
| Maximum Peak Pulse Current | IPP |  |  | 8 | A | 8/20 s Waveform (Note 4) | 2 |
| Capacitance | CJ |  |  | 30 | pF | VR = 0 V, f = 1 MHz (Line to GND) | 2 |
| Peak Power Dissipation | PPK |  |  | 350 | W | 8/20 s Double Exponential Waveform (Note 1) | 2 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | °C |  | 2 |
| Storage Temperature Range | TJ | -55 |  | 150 | °C |  | 2 |
| Lead Solder Temperature | TL |  |  | 260 | °C | 10 s | 2 |
| ESD Human Body Model | ESD |  |  | 16 | kV | HBM | 2 |
| ESD Machine Model | ESD |  |  | 400 | V | MM | 2 |
| ESD IEC 61000-4-2 Specification | ESD |  |  | 30 | kV | Contact | 2 |

## CAD (KiCad official)

- Symbol: `SZNUP2105LT3G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `sznup2105lt3g-etched.step` / `sznup2105lt3g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sznup2105lt3g.step` / `sznup2105lt3g.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ONSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590907632553312256) (8 pp, sha256 `b15c6c9d45444cf8`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/sznup2105lt3g-datasheet.pdf)