component
1.5SMC540A
Public Made by Adomby adom
Littelfuse TVS, DO-214AB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 4d ago |
| viewers | 4d ago |
| 1-5smc540a-etched.glb | 4d ago |
| 1-5smc540a-etched.step | 4d ago |
| 1-5smc540a-hero.glb | 4d ago |
| 1-5smc540a-hero.overlay.json | 4d ago |
| 1-5smc540a.glb | 4d ago |
| 1-5smc540a.kicad_mod | 4d ago |
| 1-5smc540a.kicad_sym | 4d ago |
| 1-5smc540a.lbr | 4d ago |
| 1-5smc540a.step | 4d ago |
| package.json | 4d ago |
| page.json | 4d ago |
| README.md | 4d ago |
1.5SMC540A
Littelfuse · TVS · DO-214AB
1.5SMC540A from Littelfuse, in a DO-214AB. 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 | Cathode | passive | Cathode terminal of the unidirectional TVS, marked by the color band, which is the positive end; the 1.5SMC540A has a 460V reverse standoff voltage and 513-567V breakdown at 1mA. |
| 2 | Anode | passive | Anode terminal of the unidirectional TVS, which clamps at a maximum of 740V at 2.0A peak pulse current and conducts forward like a diode (VF 3.5V max at 100A for single-die parts). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB |
| 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 | 513 | 567 | V | @ IT = 1 mA | 2 | |
| Reverse Stand-off Voltage | VR | 460 | V | 2 | |||
| Maximum Clamping Voltage | VC | 740 | V | @ Ipp = 2.0 A | 2 | ||
| Maximum Peak Pulse Current | Ipp | 2 | A | 2 | |||
| Maximum Reverse Leakage | IR | 1 | µA | @ VR | 2 | ||
| Test Current | IT | 1 | mA | 2 | |||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | TA=25ºC by 10/1000µs waveform | 1 | ||
| Power Dissipation on Infinite Heat Sink | PD | 6.5 | W | TL=50°C | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100A, unidirectional only, single die (5.0 V stacked-die) | 1 | ||
| Operating Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 175 | °C | 1 | ||
| Typical Thermal Resistance Junction to Lead | RθJL | 15 | °C/W | 1 | |||
| Typical Thermal Resistance Junction to Ambient | RθJA | 75 | °C/W | 1 | |||
| VBR Temperature Coefficient | αT | 0.1 | % | typical value | 1 | ||
| VBR Voltage Tolerance (A suffix) | -5 | 5 | % | 5% VBR voltage tolerance | 6 |
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 | copper | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
1.5SMC540A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files:
1-5smc540a-etched.step/1-5smc540a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smc540a.step/1-5smc540a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
51f55ba50fc3ad78, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).