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SRV0504
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Leiditech ESD And Surge Protection (TVS/ESD), SOT-23-6L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SRV0504
Leiditech · ESD And Surge Protection (TVS/ESD) · SOT-23-6L
SRV0504 from Leiditech, in a SOT-23-6L. 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 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
| 2 | REF1 | power_in | Negative reference for the steering diodes, to be connected directly to a ground plane with the shortest possible path to minimize parasitic inductance. |
| 3 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
| 4 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
| 5 | REF2 | power_in | Positive reference for the steering diodes, which clamps protected lines to a fixed positive reference (plus diode VF when exceeded). |
| 6 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-23-6L |
| Category | Circuit Protection |
| Pins | 6 |
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 (8/20µs) | Ppp | 75 | W | 8/20µs | 1 | ||
| ESD per IEC 61000−4−2 (Air) | VESD | -25 | 25 | Kv | IEC 61000-4-2 (Air) | 1 | |
| ESD per IEC 61000−4−2 (Contact) | VESD | -20 | 20 | Kv | IEC 61000-4-2 (Contact) | 1 | |
| Operating Temperature Range | TJ | -55 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTJ | -55 | 150 | ℃ | 1 | ||
| Breakdown Voltage | VBR | 6 | V | IT = 1 mA | 2 | ||
| Clamping Voltage | VC | 10 | 15 | V | @1A | 2 | |
| Reverse Leakage Current | IR | 0.5 | μA | 2 | |||
| Junction Capacitance | C | 0.5 | 0.8 | Pf | 2 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Lead Finish: Matte Tin Case Material: “Green” Molding Compound. | 1 |
CAD (KiCad official)
- Symbol:
SRV0504 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
srv0504-etched.step/srv0504-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);srv0504.step/srv0504.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Leiditech datasheet (6 pp, sha256
15193b8cb7e08655, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# SRV0504
**Leiditech** · ESD And Surge Protection (TVS/ESD) · SOT-23-6L
SRV0504 from Leiditech, in a SOT-23-6L. 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 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
| 2 | REF1 | power_in | Negative reference for the steering diodes, to be connected directly to a ground plane with the shortest possible path to minimize parasitic inductance. |
| 3 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
| 4 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
| 5 | REF2 | power_in | Positive reference for the steering diodes, which clamps protected lines to a fixed positive reference (plus diode VF when exceeded). |
| 6 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to REF1 (pin 2) or REF2 (pin 5); the datasheet gives 0.3 pF typical I/O-to-I/O capacitance and 5 V operating voltage. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-23-6L |
| Category | Circuit Protection |
| Pins | 6 |
## 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 (8/20µs) | Ppp | | | 75 | W | 8/20µs | 1 |
| ESD per IEC 61000−4−2 (Air) | VESD | -25 | | 25 | Kv | IEC 61000-4-2 (Air) | 1 |
| ESD per IEC 61000−4−2 (Contact) | VESD | -20 | | 20 | Kv | IEC 61000-4-2 (Contact) | 1 |
| Operating Temperature Range | TJ | -55 | | 125 | ℃ | | 1 |
| Storage Temperature Range | TSTJ | -55 | | 150 | ℃ | | 1 |
| Breakdown Voltage | VBR | 6 | | | V | IT = 1 mA | 2 |
| Clamping Voltage | VC | | 10 | 15 | V | @1A | 2 |
| Reverse Leakage Current | IR | | | 0.5 | μA | | 2 |
| Junction Capacitance | C | | 0.5 | 0.8 | Pf | | 2 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | | tin | Lead Finish: Matte Tin Case Material: “Green” Molding Compound. | 1 |
## CAD (KiCad official)
- Symbol: `SRV0504`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files: `srv0504-etched.step` / `srv0504-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `srv0504.step` / `srv0504.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Leiditech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884607919919104) (6 pp, sha256 `15193b8cb7e08655`, retrieved 2026-10-18, 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/srv0504-datasheet.pdf)