1.5SMC300A
Public Made by Adomby adom
hongjiacheng ESD And Surge Protection (TVS/ESD), DO-214AB(SMC). 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 ↗PCB Footprint
Open full view ↗Datasheet
Open in new tab ↗Contents
README
markdown1.5SMC300A
hongjiacheng · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMC)
1.5SMC300A from hongjiacheng, in a DO-214AB(SMC). 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 | hongjiacheng |
| Package | DO-214AB(SMC) |
| 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 (unidirectional, 5% tolerance) minimum | VBR | 285 | V | @IT = 1 mA | 3 | ||
| Breakdown voltage (unidirectional, 5% tolerance) maximum | VBR | 315 | V | @IT = 1 mA | 3 | ||
| Maximum clamping voltage | VC | 414 | V | @IPP = 3.7 A | 3 | ||
| Reverse leakage current | IR | 1 | μA | @VRWM | 3 | ||
| Peak pulse power dissipation | PPPM | 1500 | W | 10/1000µs waveform (Fig.1), Note 1, Note 2 | 1 | ||
| Power dissipation on infinite heat sink | PM(AV) | 6.5 | W | Ta=75℃ (Fig.5) | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3ms single half sine wave (Note 3, Fig.5) | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | ℃ | 1 | ||
| Voltage tolerance (suffix A = 5% device) | VBR | -5 | 5 | % | Suffix 'A' denotes 5% tolerance device | 3 | |
| Maximum temperature coefficient of breakdown voltage | ΔVBR | 0.1 | % x VBR@25℃ x ΔT | Typical maximum, ΔVBR = 0.1% × VBR@25℃ × ΔT | 1 | ||
| Typical thermal resistance junction to lead | RθJ-L | 15 | ℃/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJ-A | 75 | ℃/W | 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 •Meets MSL level 1, per J-STD-020 | 1 |
CAD (KiCad official)
- Symbol:
1.5SMC300A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files:
1-5smc300a-etched.step/1-5smc300a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smc300a.step/1-5smc300a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (5 pp, sha256
c9947330107dbeb2, 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).