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SZ1SMA5.0AT3G
Public Made by Adomby adom
Littelfuse TVS, SMA(DO-214AC). 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
markdownSZ1SMA5.0AT3G
Littelfuse · TVS · SMA(DO-214AC)
SZ1SMA5.0AT3G from Littelfuse, in a SMA(DO-214AC). 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 uni-directional TVS; the color band on the package denotes the cathode. |
| 2 | Anode | passive | Anode terminal of the uni-directional TVS, which is the terminal opposite the cathode band. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | SMA(DO-214AC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 6.4 | 6.7 | 7 | V | @ IT = 10 mA (Note 7: measured at 25°C) | 3 |
| Forward Voltage | VF | 3.5 | V | @ IF = 30 A (Note 5), uni-directional | 2 | ||
| Maximum Reverse Leakage Current | IR | 400 | µA | @ VRWM = 5.0 V | 3 | ||
| Maximum Reverse Peak Pulse Current | IPP | 43.5 | A | Surge waveform per Figure 2 (Note 8) | 3 | ||
| Peak Power Dissipation | PPK | 400 | W | TL = 25°C, Pulse Width = 1 ms (Note 1: 10x1000 µs, non-repetitive) | 1 | ||
| Forward Surge Current (uni-directional) | IFSM | 40 | A | TA = 25°C, 1/2 sine wave, PW = 8.3 ms (Note 4) | 1 | ||
| Operating and Storage Temperature Range | TJ, Tstg | -65 | 150 | °C | 1 | ||
| DC Power Dissipation at lead | PD | 1.5 | W | TL = 75°C, measured zero lead length (Note 2) | 1 | ||
| DC Power Dissipation at ambient | PD | 0.5 | W | TA = 25°C, FR-4 board, Littelfuse minimum recommended footprint (Note 3) | 1 | ||
| Thermal Resistance Junction-to-Lead | RƟJL | 50 | °C/W | Note 2: 1 in square copper pad, FR-4 board | 1 | ||
| Thermal Resistance Junction-to-Ambient | RƟJA | 250 | °C/W | Note 3: FR-4 board, Littelfuse minimum recommended footprint | 1 | ||
| Typical Junction Capacitance | C | 2035 | pF | Bias voltage = 0 V, F = 1.0 MHz, TJ = 25°C (Note 9) | 3 |
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 | and the terminal finish material is tin(Sn) (IPC/ | 1 |
CAD (KiCad official)
- Symbol:
SZ1SMA5.0AT3G - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (7 pp, sha256
2dcbd1b5c6bf6a05, retrieved 2026-10-30, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).