component
3.0SMCJ33A
Public Made by Adomby adom
Littelfuse TVS, DO-214AB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdown3.0SMCJ33A
Littelfuse · TVS · DO-214AB
3.0SMCJ33A 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 3.0SMCJ33A TVS (marked with cathode band), with VR 33.00 V stand-off and 36.70-40.60 V breakdown at 1 mA. |
| 2 | Anode | passive | Anode terminal of the unidirectional 3.0SMCJ33A TVS, to be connected to the lower-potential/return side of the protected line. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB |
| Category | TVS/Fuse/Board Level 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 |
|---|---|---|---|---|---|---|---|
| Reverse Stand-off Voltage | VR | 33 | V | 2 | |||
| Breakdown Voltage | VBR | 36.7 | 40.6 | V | @ IT = 1 mA | 2 | |
| Test Current | IT | 1 | mA | 2 | |||
| Maximum Clamping Voltage (10/1000μs) | VC | 53.3 | V | @ Ipp (10/1000μs) | 2 | ||
| Maximum Peak Pulse Current (10/1000μs) | Ipp | 56.3 | A | 10/1000μs | 2 | ||
| Maximum Clamping Voltage (8/20μs) | VC | 68.86 | V | @ Ipp (8/20μs) | 2 | ||
| Maximum Peak Pulse Current (8/20μs) | Ipp | 281.5 | A | 8/20μs | 2 | ||
| Maximum Reverse Leakage | IR | 2 | µA | @ VR | 2 | ||
| Maximum Temperature coefficient of VBR | 0.097 | %/C | 2 | ||||
| Peak Pulse Power Dissipation | PPPM | 3000 | W | 10/1000μs waveform, TA=25°C | 1 | ||
| Power dissipation on infinite heatsink | PD | 6.5 | W | TC = 25 °C | 1 | ||
| Peak Forward Surge Current | IFSM | 300 | A | 8.3ms single half sine wave, unidirectional only | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100A, unidirectional only | 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 |
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:
3.0SMCJ33A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files:
3-0smcj33a-etched.step/3-0smcj33a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);3-0smcj33a.step/3-0smcj33a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
53531fb5f0ed34c5, retrieved 2026-10-23, 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).