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Tungsten filaments, AEI base
Tungsten hairpin filaments are the standard type filaments widely used in Scanning Electron Microscopes, Transmission Electron Microscopes and Microprobe systems. Tungsten filaments are also called cathodes or electron emitters or electron sources. The high quality filaments we offer are made to the original equipment manufacturer's specifications using special tools to guarantee the correct shape for the filaments and to generate the optimum electron beam. The filaments are annealed in vacuum, stress-free and precisely aligned before they are shipped. Please consult the list below for the correct type of filament for your SEM, TEM, or EPMA.
The tungsten filaments are manufactured from high grade tungsten. Of all metals in pure form, tungsten has the highest melting point (3422°C), the lowest vapour pressure at temperatures above 1650°C and has the highest tensile strength. Tungsten also has the lowest coefficient of thermal expansion of any pure metal. This combination of properties makes tungsten the ideal material.
Compatible EM: AEI Base Filaments for ZEISS (EVO), LEO, AEI, Cambridge (except S4-10), Novascan, Leica
Specifications:
- Diameter of ceramic disc: 12.0mm
- Diameter of pins: 1.0mm
- Centre to centre distance of pins: 6.45mm
Available:
| Code | Description |
|---|---|
| M72 | AEI Base Filaments, white base |
| MTP1403-L | AEI Base Filaments, white base (0.15mm wire) |
| MTP1403-WRE | AEI Base Filaments, white base (Tungsten/Rhenium Wire) |
* Ordering Schedule
This item is available for back-order where 0 stock is listed.
We order from this manufacturer weekly, with an estimated lead time of 3 weeks.
This is the estimated lead time, based on the average time taken previously to fill orders from this particular supplier.
Lead times are from when we receive your order until when we fill your order. For delivery times, please see shipping information below.
