component

SZ1SMA5.0AT3G

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Littelfuse TVS, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttvs-fuse-board level protectionsz1sma5.0at3gfactory-2.0.0extractor-text

Verified SZ1SMA5.0AT3G

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier lcsc, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SZ1SMA5.0AT3G · SMA(DO-214AC) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 7-page datasheet
  • ✓distributor: lcsc C5270791, digikey F11528TR-ND, mouser 863-SZ1SMA5.0AT3G
  • ✓family: D_SMA
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-xtndq5b5/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.6)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ sz1sma5-0at3g.kicad_sym✓ sz1sma5-0at3g.kicad_mod✓ sz1sma5-0at3g.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2h ago
viewers sz1sma5-0at3g: viewers · Ray 2h ago
package.json Publish 0.1.0 · Ray 2h ago
page.json Set visibility: public · Ray 2h ago
README.md Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g-hero.glb Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g-hero.overlay.json Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g.glb Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g.kicad_mod Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g.kicad_sym Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g.lbr Publish 0.1.0 · Ray 2h ago
sz1sma5-0at3g.step Publish 0.1.0 · Ray 2h ago
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray 2h ago

SZ1SMA5.0AT3G

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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF