component

3SMBJ5945B-TP

Public Made by Adom

by adom

MCC(Micro Commercial Components) Zener Diodes, SMB(DO-214AA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentdiodes3smbj5945b-tpfactory-2.0.0extractor-text

Verified 3SMBJ5945B-TP

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: 3SMBJ5945B-TP · SMB(DO-214AA) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 4-page datasheet
  • ✓distributor: lcsc C914247, digikey 353-3SMBJ5945B-TPTR-ND, mouser 833-3SMBJ5945B-TP
  • ✓family: D_SMB
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-umux_j4z/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.1)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ 3smbj5945b-tp.kicad_sym✓ 3smbj5945b-tp.kicad_mod✓ 3smbj5945b-tp.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 2d ago
viewers 3smbj5945b-tp: viewers · Ray 2d ago
3smbj5945b-tp-etched.glb Publish 0.1.0 · Ray 2d ago
3smbj5945b-tp-etched.step 3smbj5945b-tp: factory component page (tier=lcsc) · Ray 2d ago
3smbj5945b-tp-hero.glb 3smbj5945b-tp: hero GLB from the etched model (keeps the MPN mark) · Ray 2d ago
3smbj5945b-tp-hero.overlay.json Publish 0.1.0 · Ray 2d ago
3smbj5945b-tp.glb Publish 0.1.0 · Ray 2d ago
3smbj5945b-tp.kicad_mod Publish 0.1.0 · Ray 2d ago
3smbj5945b-tp.kicad_sym Publish 0.1.0 · Ray 2d ago
3smbj5945b-tp.lbr Publish 0.1.0 · Ray 2d ago
3smbj5945b-tp.step Publish 0.1.0 · Ray 2d ago
package.json Publish 0.1.0 · Ray 2d ago
page.json Set visibility: public · Ray 2d ago
README.md Publish 0.1.0 · Ray 2d ago
verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray 2d ago

3SMBJ5945B-TP

MCC(Micro Commercial Components) · Zener Diodes · SMB(DO-214AA)

3SMBJ5945B-TP from MCC(Micro Commercial Components), in a SMB(DO-214AA). 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer MCC(Micro Commercial Components)
Package SMB(DO-214AA)
Category Diodes
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
Zener voltage tolerance VZ -5 5 % Type numbers with B suffix indicate +/-5% tolerance (Note 4) 2
Maximum Dynamic Impedance ZZT 120 Ω @ IZT = 5.5 mA 2
Maximum Reverse Current IR 1 µA Reverse voltage VR = 51.7 V 2
Maximum Forward Voltage VF 1.5 V IF = 200 mA 1
Steady State Power Dissipation PD 3 W Note 3: mounted on 5.0 mm2 (1oz thick) land areas; lead temperature TL=75 °C 1
Operating Junction Temperature Range TJ -65 150 °C 1
Storage Temperature Range TSTG -65 150 °C 1
Zener Voltage VZ 68 V @ IZT = 5.5 mA 2
Knee Impedance ZZk 1700 Ω @ IZK = 0.25 mA 2
Knee Current IZK 0.25 mA 2
Reverse Voltage VR 51.7 V Column VR as printed for IR 2
Thermal Resistance Junction to Ambient RθJA 226 °C/W Junction to ambient 1
Thermal Resistance Junction to Lead RθJL 20 °C/W Junction to lead 1
Thermal Resistance Junction to Case RθJC 22 °C/W Junction to case 1

CAD (KiCad official)

  • Symbol: 3SMBJ5945B-TP
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: 3smbj5945b-tp-etched.step / 3smbj5945b-tp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 3smbj5945b-tp.step / 3smbj5945b-tp.glb are the bare package body.

Provenance

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

  • Datasheet: MCC(Micro Commercial Components) datasheet (4 pp, sha256 3bccce2727b9eb2f, retrieved 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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