component
1.5SMB39CA
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA(SMBJ). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdown1.5SMB39CA
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)
1.5SMB39CA from Littelfuse, in a DO-214AA(SMBJ). 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-214AA(SMBJ) |
| 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 (bidirectional 1.5SMB39CA) | VBR | 37.1 | 41 | V | @ IT = 1 mA | 2 | |
| Maximum peak pulse current Ipp (10/1000µs) | Ipp | 28.2 | A | 10/1000µs waveform | 2 | ||
| Maximum clamping voltage VC @ Ipp (10/1000µs) | VC | 53.9 | V | @ Ipp (10/1000µs), Ipp = 28.2 A | 2 | ||
| Maximum clamping voltage VC @ Ipp (8/20µs) | VC | 69.6 | V | @ Ipp (8/20µs), Ipp = 155.1 A | 2 | ||
| Maximum peak pulse current Ipp (8/20µs) | Ipp | 155.1 | A | 8/20µs waveform | 2 | ||
| Maximum reverse leakage current | IR | 1 | µA | @ VR = 33.3 V | 2 | ||
| Maximum temperature coefficient of VBR | 0.097 | %/C | 2 | ||||
| Stand-off voltage VR | VR | 33.3 | V | 2 | |||
| Peak pulse power dissipation PPPM | PPPM | 1500 | W | 10/1000µs waveform (Fig.2), Notes 1, 2 | 1 | ||
| Power dissipation on infinite heat sink | PD | 5 | 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 | 20 | °C/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 100 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
1.5SMB39CA - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files:
1-5smb39ca-etched.step/1-5smb39ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smb39ca.step/1-5smb39ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
edddb435792266f3, retrieved 2026-10-15, 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).