component
RCLAMP0554S
Public Made by Adomby adom
Leiditech ESD And Surge Protection (TVS/ESD), SOT-26. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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RCLAMP0554S
Leiditech · ESD And Surge Protection (TVS/ESD) · SOT-26
RCLAMP0554S from Leiditech, in a SOT-26. 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_1 | passive | Data line protection pin (I/O pin 1) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
| 2 | REF1 | power_in | Negative reference (REF1) that should be connected directly to a board ground plane with the shortest possible path to minimize parasitic inductance. |
| 3 | I/O_3 | passive | Data line protection pin (I/O pin 3) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
| 4 | I/O_4 | passive | Data line protection pin (I/O pin 4) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
| 5 | REF2 | power_in | Positive reference (REF2), connected to VCC in the application circuits; the Reverse Working Voltage is 5 V and the breakdown voltage (1 mA) is 6 V min measured from pin 5 to pin 2. |
| 6 | I/O_6 | passive | Data line protection pin (I/O pin 6) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-26 |
| 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 | 500 | W | 8/20µs | 1 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | 30 | kV | ESD per IEC 61000-4-2 (Air) | 1 | |
| ESD per IEC 61000-4-2 (Contact) | -30 | 30 | kV | ESD per IEC 61000-4-2 (Contact) | 1 | ||
| Operating Temperature Range | TJ | -55 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTJ | -55 | 150 | ℃ | 1 | ||
| Junction Capacitance (any I/O pin to ground) | CJ | 3 | 5 | pF | VR = 0V, f = 1MHz, any I/O pin to ground | 2 | |
| Reverse Working Voltage | VRWM | 5 | V | 2 | |||
| Breakdown Voltage | VBR | 6 | V | IT = 1mA, Pin 5 to Pin 2 | 2 | ||
| Reverse Leakage Current | IR | 1 | µA | VRWM = 5V, Pin 5 to Pin 2 | 2 | ||
| Forward Voltage | VF | 1.2 | V | IF = 15mA | 2 | ||
| Clamping Voltage | VC | 12 | V | IPP = 1A (8 x 20µs pulse), any I/O pin to ground | 2 | ||
| Clamping Voltage | VC | 20 | V | IPP = 25A (8 x 20µs pulse), any I/O pin to ground | 2 | ||
| Junction Capacitance (between I/O pins) | CJ | 1.5 | pF | VR = 0V, f = 1MHz, between I/O pins | 2 |
CAD (KiCad official)
- Symbol:
RCLAMP0554S - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-26 (KiCad packages3D, STEP)
- 3D model files:
rclamp0554s-etched.step/rclamp0554s-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rclamp0554s.step/rclamp0554s.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Leiditech datasheet (8 pp, sha256
1c014f57e86b0e7e, 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).
# RCLAMP0554S
**Leiditech** · ESD And Surge Protection (TVS/ESD) · SOT-26
RCLAMP0554S from Leiditech, in a SOT-26. 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_1 | passive | Data line protection pin (I/O pin 1) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
| 2 | REF1 | power_in | Negative reference (REF1) that should be connected directly to a board ground plane with the shortest possible path to minimize parasitic inductance. |
| 3 | I/O_3 | passive | Data line protection pin (I/O pin 3) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
| 4 | I/O_4 | passive | Data line protection pin (I/O pin 4) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
| 5 | REF2 | power_in | Positive reference (REF2), connected to VCC in the application circuits; the Reverse Working Voltage is 5 V and the breakdown voltage (1 mA) is 6 V min measured from pin 5 to pin 2. |
| 6 | I/O_6 | passive | Data line protection pin (I/O pin 6) that steers transients through the internal diodes to the REF1 and REF2 references; the datasheet gives Junction Capacitance of 1.5 pF max between I/O pins and 3.0 pF typ / 5.0 pF max to ground at VR = 0V, 1MHz. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-26 |
| 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 | | | 500 | W | 8/20µs | 1 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | | 30 | kV | ESD per IEC 61000-4-2 (Air) | 1 |
| ESD per IEC 61000-4-2 (Contact) | | -30 | | 30 | kV | ESD per IEC 61000-4-2 (Contact) | 1 |
| Operating Temperature Range | TJ | -55 | | 125 | ℃ | | 1 |
| Storage Temperature Range | TSTJ | -55 | | 150 | ℃ | | 1 |
| Junction Capacitance (any I/O pin to ground) | CJ | | 3 | 5 | pF | VR = 0V, f = 1MHz, any I/O pin to ground | 2 |
| Reverse Working Voltage | VRWM | | 5 | | V | | 2 |
| Breakdown Voltage | VBR | | 6 | | V | IT = 1mA, Pin 5 to Pin 2 | 2 |
| Reverse Leakage Current | IR | | 1 | | µA | VRWM = 5V, Pin 5 to Pin 2 | 2 |
| Forward Voltage | VF | | 1.2 | | V | IF = 15mA | 2 |
| Clamping Voltage | VC | | 12 | | V | IPP = 1A (8 x 20µs pulse), any I/O pin to ground | 2 |
| Clamping Voltage | VC | | 20 | | V | IPP = 25A (8 x 20µs pulse), any I/O pin to ground | 2 |
| Junction Capacitance (between I/O pins) | CJ | | 1.5 | | pF | VR = 0V, f = 1MHz, between I/O pins | 2 |
## CAD (KiCad official)
- Symbol: `RCLAMP0554S`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-26 (KiCad packages3D, STEP)
- 3D model files: `rclamp0554s-etched.step` / `rclamp0554s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rclamp0554s.step` / `rclamp0554s.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/8590227252375162880) (8 pp, sha256 `1c014f57e86b0e7e`, 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/rclamp0554s-datasheet.pdf)