EBS Tungsten EM Filaments
High quality, high stability EM cathodes


Introduction
    selection of EBS Tungsten EM Filaments

The tungsten filaments manufactured by Energy Beam Sciences are used in all major brands of scanning and transmission electron microscopes. These high quality, high stability tungsten EM filaments, also called cathodes or electron emitters, are manufactured to excede the specifications of the original equipment manufacturers.  These superior cathodes are made using high quality ceramic dics, exact size contact pins and high grade tungsten filament wire. Special tools are used to produce the correct shape of the tungsten filament. All EBSciences tungsten filaments are precisely aligned and annealed in high vacuum to reduce stress in the filament. This will guarantee optimum stability, maximum brightness, longer lifetime and overall lower running costs.


Exclusive features of the EBS tungsten EM filaments are:
  • Minimum tip radius for coherent beam
  • Rigid attachment of filament wire to post to increase stability
  • Fully stress relieved for enhanced cathode lifetime
  • Polished post ends
  • Precise dimensions
  • Better long term economy

Please consult the following table for the correct type of tungsten filament for your SEM, TEM or Microprobe. The EBS tungsten filaments are available for FEI, Hitachi, ISI, JEOL, Philips, Tescan, Zeiss, LEO, Cambridge Instruments, Leica, AmRay, Pemtron and CamScan Electron Microscopes.


Tungsten Filament Selection Table
 
Electron Microscope Type or Filament base       Product number Ceramic Disc mm Pin Diameter  mm Pin Pitch mm

AEI

14-AE1201

12.0 1.0 6.45
AmRay /AMR (except 1200 series)

14-AM1202

26.0

1.0

5.0

Cambridge Instruments (except S4-10)

14-AE1201

12.0 1.0 6.45
CamScan with AEI conversion

14-AE1201

12.0 1.0 6.45
CamScan with new Tescan Column

14-TN1209

19.8 1.0 5.0
Coxem

14-CX1212

23.4 1.2 12.0
FEI

14-FP1203

26.0 1.0 5.0
Hitachi S-Type

14-HI1204

9.8 1.2 2.7
Hitachi  with Cartridge TM series tabletop
3400N, 3700N, SU1500, SU3500

14-HT1205

9.8 1.2 2.7
ISI /ABT / Topcon 2-Pin

14-I21206

23.4 1.2 12.0
JEOL K-Type with metal ring

14-JL1208

28.0 1.2 8.0
Leica

14-AE1201

12.0 1.0 6.45
LEO 400 and 1400 Series SEM

14-AE1201

12.0 1.0 6.45
LEO1450 (except AEI conversions)

14-ZS1210

19.8 1.0 5.0
LEO TEM

14-ZS1210

19.8 1.0 5.0
Pemtron

14-PT1211

23.4 1.2 12.0
Philips V-Loop (PSEM500/EM200 and later)

14-FP1203

26.0 1.0 5.0
Tescan

14-TN1209

19.8 1.0 5.0
Zeiss DSM and TEM

14-ZS1210

19.8 1.0 5.0
Zeiss EVO

14-AE1201

12.0 1.0 6.45


Electron Source Performance Table

The electron source performance table is provided to give additional information regarding the performance and requirements for different type of electron emitters. Tungsten cathodes are still used in the majority in SEMs and in general use TEMs. Improved results can be obtained with LaB6 cathodes, whereas the highest resolution can be obtained with either Schottky or cold Field Emission Sources which can only be used in suitable EMs.

Emitter Type Thermionic Thermionic Schottky FE Cold FE
Cathode Material W LaB6 ZrO/W (100) W (310)
Operating Temp (K) 2700 1800 1800 300
Cathode Radius (nm) 60,000 10,000 <1000 <100
Effective Source Radius (µm) 25 10 0.015 0.0025
Emission Current Density (A/cm2) 3 30 5300 17,000
Total Emission Current (µA) 200 80 200 5
Brightness (A/cm2.sr.kV) 1x104 1x105 1x107 2x107
Maximum Probe Current (nA) 1000 1000 10 0.2
Energy Spread @ Cathode (ev) 0.59 0.4 0.31 0.26
Energy Spread @ Source Exit (eV) 1.5 – 2.5 1.3 – 2.5 0.35 – 0.7 0.3 – 0.7
Beam Noise (%) 1 1 1 5 – 10
Emission Current Drift (%/h) 0.1 0.2 <0.5 5
Operating Vacuum (hPa/mbar) <10-5 <10-6 <10-8 <10-10
Typical Cathode Life (h) 100 >1000 >5000 >2000
Cathode Regeneration (h) None None None 6-12
Sensitivity to External Influences Minimal Low Low High


Ordering information for EBS Tungsten EM Filaments

*Prices without VAT, but within the EU, we have to check for valid VAT-ID.
  
AEI Base Tungsten Filaments
AEI Base Tungsten Filaments

AEI base filaments compatible with Zeiss EVO, LEO, Leica, and Cambridge Instrument SEMs

Ceramic Disc Diameter: 12.0mm - Pin Diameter: 1.0mm - Pin Pitch: 6.45mm
Product # Unit Price* Add to Quote / Order
14-AE1201 AEI Base Tungsten Filaments
Qty:

Box/10 €172,00


ZEISS Base Tungsten Filaments for Zeiss DSM REM/Zeiss TEM und LEO 400/1400 Serie REM/LEO TEM
ZEISS Base Tungsten Filaments for Zeiss DSM REM/Zeiss TEM und LEO 400/1400 Serie REM/LEO TEM

Zeiss Tungsten Filaments for Zeiss DSM SEMs/Zeiss TEMs and LEO 400/1400 series SEMs/LEO TEMs

Ceramic Disc Diameter: 19.80mm - Pin Diameter: 1.0mm - Pin Pitch: 5.0mm
Product # Unit Price* Add to Quote / Order
14-ZS1210 ZEISS Base Tungsten Filaments for Zeiss DSM SEMs/Zeiss TEMs and LEO 400/1400 series SEMs/LEO TEMs
Qty:

Box/10 €425,00


Coxem filaments H1020 for Coxem SEMs
Coxem filaments H1020 for Coxem SEMs

Coxem Filaments H1020 for Coxem SEMs

Ceramic Disc Diameter: 23.4mm - Pin Diameter: 1.2mm - Pin Pitch: 12.0mm
Product # Unit Price* Add to Quote / Order
14-CX1212 Coxem filament H1020 for Coxem SEMs
Qty:

Box/10 €555,00


Amray Base Tungsten Filaments
Amray Base Tungsten Filaments

AmRay filament for all AmRay, AMR and Leitz/AMR SEMs, except AMR 1200 series

Ceramic Disc Diameter: 26.0mm - Pin Diameter: 1.0mm - Pin Pitch: 5.0mm
Product # Unit Price* Add to Quote / Order
14-AM1202 AmRay Base Tungsten Filaments
Qty:

Box/10 €439,00


FEI-Philips Base Tungsten Filament
FEI-Philips Base Tungsten Filament

FEI / Philips filaments for FEI SEM/TEM and Philips PSEM 500 and later and Philips EM200 TEM and later

Ceramic Disc Diameter: 26.0mm - Pin Diameter: 1.0mm - Pin Pitch: 5.0mm
Product # Unit Price* Add to Quote / Order
14-FP1203 FEI-Philips Base Tungsten Filaments
Qty:

Box/10 €268,00


Hitachi S-Type Base Tungsten Filaments
Hitachi S-Type Base Tungsten Filaments

Hitachi S-Type Filaments for S-, SU-, H- and X-Series SEM and TEM

Ceramic Disc Diameter: 9.8mm - Pin Diameter: 1.2mm - Pin Pitch: 2.7mm
Product # Unit Price* Add to Quote / Order
14-HI1204 Hitachi S-Type Base Tungsten Filaments
Qty:

Box/10 €429,00


Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge
Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge

Hitachi S-Type pre-aligned Tungsten Filaments with Metal Cartridge for S-3400N, S-3700N, SU-1500, SU1510, SU-3500, FlexSEM and the TM-series Table Top SEMs: TM4040plus, TM4040, TM3030plus, TM3030, TM3000 and TM1000

Ceramic Disc Diameter: 9.8mm - Pin Diameter: 1.2mm - Pin Pitch: 2.7mm
Product # Unit Price* Add to Quote / Order
14-HT1205 Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge
Qty:

Box/10 €595,00
14-HT1205-1 Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge
Qty:

each €62,00


ISI 2 Pin Base Tungsten Filaments
ISI 2 Pin Base Tungsten Filaments

ISI 2-Pin Filaments for ISI / ABT / Topcon SEM and ABT TEM

Ceramic Disc Diameter: 23.4mm - Pin Diameter: 1.2mm - Pin Pitch: 12.0mm
Product # Unit Price* Add to Quote / Order
14-I21206 ISI 2 Pin Base Tungsten Filaments
Qty:

Box/10 €555,00


Jeol K-Type Base Tungsten Filaments with Metal Ring
Jeol K-Type Base Tungsten Filaments with Metal Ring

JEOL K-Type Filaments with Stainless Steel Alignment Ring for SEM and TEM
Product # Unit Price* Add to Quote / Order
14-JL1208 JEOL K-Type Base Tungsten Filaments with Metal Ring
Qty:

Box/6 €299,00


Tescan Base Tungsten Filaments
Tescan Base Tungsten Filaments

Tescan Filaments for Tescan SEMs and Camscan SEMs with new Tescan Columns

Ceramic Disc Diameter: 19.8mm - Pin Diameter: 1.0mm - Pin Pitch: 5.0mm
Product # Unit Price* Add to Quote / Order
14-TN1209 Tescan Base Tungsten Filaments
Qty:

Box/10 €425,00
14-TN1209-3 Tescan Base Tungsten Filaments
Qty:

Box/3 €177,00


Pemtron Base Tungsten Filaments
Pemtron Base Tungsten Filaments

Pemtron Filaments for Pemtron SEMs

Ceramic Disc Diameter: 23.4mm - Pin Diameter: 1.2mm - Pin Pitch: 12.0mm
Product # Unit Price* Add to Quote / Order
14-PT1211 Pemtron filament for Pemtron SEMs
Qty:

Box/10 €555,00




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