Electron Column Assembly
A heated or field-emission source emits electrons that an accelerating anode pulls into a beam; condenser and objective electromagnetic lenses demagnify it to a fine probe, apertures trim its tails, and scan coils sweep it across the sample. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
8 top-level lines · 17 rows shown · 20 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Electron Gun 3 parts | sem-electron-gun | 1× | 1 | 3 | assembly |
| 1.1 | Emitter Filament | sem-filament | 1× | 1 | — | part |
| 1.2 | Wehnelt Cap | sem-wehnelt | 1× | 1 | — | part |
| 1.3 | Extraction Electrode | sem-extractor | 1× | 1 | — | part |
| 2 | Accelerating Anode | sem-anode | 1× | 1 | — | part |
| 3 | Condenser Lens 3 parts | sem-condenser-lens | 2× | 2 | 4 | assembly |
| 3.1 | Copper Winding | copper-winding | 1× | 2 | — | part |
| 3.2 | Lens Pole Piece | sem-pole-piece | 1× | 2 | — | part |
| 3.3 | Neodymium Magnet | neodymium-magnet | 2× | 4 | — | part |
| 4 | Objective Lens 3 parts | sem-objective-lens | 1× | 1 | 4 | assembly |
| 4.1 | Copper Winding | copper-winding | 1× | 1 | — | part |
| 4.2 | Lens Pole Piece | sem-pole-piece | 1× | 1 | — | part |
| 4.3 | Neodymium Magnet | neodymium-magnet | 2× | 2 | — | part |
| 5 | Aperture Strip | sem-aperture-strip | 1× | 1 | — | part |
| 6 | Scan Deflection Coils | sem-scan-coil | 1× | 1 | — | part |
| 7 | Stigmator | sem-stigmator | 1× | 1 | — | part |
| 8 | Column Body | sem-column-body | 1× | 1 | — | part |
Used in 1 assembly
Sourcing — likely vendors
Companies that make this · indicative price $0.50–$100 · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| 🇨🇳Foxconn foxconn.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |