component

1SMA4749A

Public Made by Adom

by adom

MDD Microdiode Semiconductor Zener Diodes, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentdiodes1sma4749afactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
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 10d ago
viewers 1sma4749a: viewers · Ray 10d ago
1sma4749a-etched.glb Publish 0.1.0 · Ray 10d ago
1sma4749a-etched.step 1sma4749a: factory component page (tier=lcsc) · Ray 10d ago
1sma4749a-hero.glb 1sma4749a: hero GLB from the etched model (keeps the MPN mark) · Ray 10d ago
1sma4749a-hero.overlay.json Publish 0.1.0 · Ray 10d ago
1sma4749a.glb Publish 0.1.0 · Ray 10d ago
1sma4749a.kicad_mod Publish 0.1.0 · Ray 10d ago
1sma4749a.kicad_sym Publish 0.1.0 · Ray 10d ago
1sma4749a.lbr Publish 0.1.0 · Ray 10d ago
1sma4749a.step Publish 0.1.0 · Ray 10d ago
package.json Publish 0.1.0 · Ray 10d ago
page.json Set visibility: public · Ray 10d ago
README.md Publish 0.1.0 · Ray 10d ago

1SMA4749A

MDD Microdiode Semiconductor · Zener Diodes · SMA(DO-214AC)

1SMA4749A from MDD Microdiode Semiconductor, 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 K passive Cathode terminal, marked by the polarity band on the body, which goes positive in Zener (reverse) breakdown regulation; the datasheet gives power dissipation of 1.0 W at TA=50°C and a 1.2 V forward voltage.
2 A passive Anode terminal, the end without the polarity band; the datasheet gives a peak forward surge current of 10.0 A (8.3 ms half sine-wave) and an operating and storage range of -55 to +150 °C.

Key specifications

Parameter Value
Manufacturer MDD Microdiode Semiconductor
Package SMA(DO-214AC)
Category Diodes
Pins 2

CAD (KiCad official)

  • Symbol: 1SMA4749A
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: 1sma4749a-etched.step / 1sma4749a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1sma4749a.step / 1sma4749a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MDD Microdiode Semiconductor datasheet (5 pp, sha256 b0a657aa72d39a2a, retrieved 2026-10-12, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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