component
P4SMA27A
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AC(SMA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
main
P4SMA27A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
P4SMA27A from Littelfuse, in a DO-214AC(SMA). 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AC(SMA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage VBR (min/max) | VBR | 25.7 | 28.4 | V | @ IT = 1 mA | 2 | |
| Maximum Clamping Voltage VC | VC | 37.5 | V | @ Ipp | 2 | ||
| Maximum Peak Pulse Current Ipp | Ipp | 10.9 | A | 2 | |||
| Maximum Reverse Leakage Current IR | IR | 1 | µA | @ VR | 2 | ||
| Reverse Stand-off Voltage VR | VR | 23.1 | Volts | 2 | |||
| Maximum Temperature Coefficient of VBR | 0.092 | %/C | 2 | ||||
| Peak Pulse Power Dissipation (single die), 10/1000us waveform | PPPM | 400 | W | 10/1000us waveform at TA=25°C, single die parts | 1 | ||
| Peak Forward Surge Current, 8.3ms single half sine wave | IFSM | 60 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 25A, unidirectional only, single die parts | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 3.3 | W | at TL = 50°C | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 30 | °C/W | junction to lead, typical | 1 | ||
| Typical Thermal Resistance Junction to Ambient | RθJA | 120 | °C/W | junction to ambient, typical | 1 |
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 | • Matte tin lead-free Plated • Halogen-free and RoHS | 1 |
CAD (KiCad official)
- Symbol:
P4SMA27A - Footprint:
Diode_SMD:D_SMA - 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files:
p4sma27a-etched.step/p4sma27a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);p4sma27a.step/p4sma27a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
52be5822237f1b93, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band 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).
# P4SMA27A
**Littelfuse** · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)
P4SMA27A from Littelfuse, in a DO-214AC(SMA). 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AC(SMA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage VBR (min/max) | VBR | 25.7 | | 28.4 | V | @ IT = 1 mA | 2 |
| Maximum Clamping Voltage VC | VC | | | 37.5 | V | @ Ipp | 2 |
| Maximum Peak Pulse Current Ipp | Ipp | | | 10.9 | A | | 2 |
| Maximum Reverse Leakage Current IR | IR | | | 1 | µA | @ VR | 2 |
| Reverse Stand-off Voltage VR | VR | | | 23.1 | Volts | | 2 |
| Maximum Temperature Coefficient of VBR | | | | 0.092 | %/C | | 2 |
| Peak Pulse Power Dissipation (single die), 10/1000us waveform | PPPM | | | 400 | W | 10/1000us waveform at TA=25°C, single die parts | 1 |
| Peak Forward Surge Current, 8.3ms single half sine wave | IFSM | | | 60 | A | 8.3ms single half sine wave, unidirectional only | 1 |
| Maximum Instantaneous Forward Voltage | VF | | | 3.5 | V | at 25A, unidirectional only, single die parts | 1 |
| Power Dissipation on Infinite Heat Sink | PD | | | 3.3 | W | at TL = 50°C | 1 |
| Operating Temperature Range | TJ | -65 | | 150 | °C | | 1 |
| Storage Temperature Range | TSTG | -65 | | 175 | °C | | 1 |
| Typical Thermal Resistance Junction to Lead | RθJL | | 30 | | °C/W | junction to lead, typical | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA | | 120 | | °C/W | junction to ambient, typical | 1 |
## 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 | • Matte tin lead-free Plated • Halogen-free and RoHS | 1 |
## CAD (KiCad official)
- Symbol: `P4SMA27A`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `p4sma27a-etched.step` / `p4sma27a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p4sma27a.step` / `p4sma27a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Littelfuse datasheet](docs/p4sma27a-datasheet.pdf) (6 pp, sha256 `52be5822237f1b93`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band 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/p4sma27a-datasheet.pdf)