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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


Ordering Information

*Prices are without tax. Tax might be added in cart.

AEI Base Tungsten Filaments AEI base Filaments compatible with Zeiss EVO, LEO, Leica, and Cambridge Instrument SEMs

Product # Unit Price* Add to Quote / Cart
14-AE1201 AEI Base Tungsten Filaments
Qty:

Box/10 €172,00

Amray Base Tungsten Filaments AmRay Filament for all AmRay, AMR and Leitz/AMR SEMs, except AMR 1200 series

Product # Unit Price* Add to Quote / Cart
14-AM1202 AmRay Base Tungsten Filaments
Qty:

Box/10 €439,00

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

Product # Unit Price* Add to Quote / Cart
14-CX1212 Coxem filament H1020 for Coxem SEMs
Qty:

Box/10 €555,00

FEI-Philips Base Tungsten Filament FEI / Philips Filaments for FEI SEM/TEM and Philips PSEM 500 and later and Philips EM200 TEM and later

Product # Unit Price* Add to Quote / Cart
14-FP1203 FEI-Philips Base Tungsten Filaments
Qty:

Box/10 €268,00

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

Product # Unit Price* Add to Quote / Cart
14-HI1204 Hitachi S-Type Base Tungsten Filaments
Qty:

Box/10 €490,00

Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge Hitachi S-Type pre-aligned Filaments with Metal Cartridge for S-3400N, S-3700N, SU-1500, SU-15210, SU-3500 and TM33030-3000-1000 series Table top SEM

Product # Unit Price* Add to Quote / Cart
14-HT1205 Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge
Qty:

Box/10 €797,50
14-HT1205-1 Hitachi S-Type Base pre-aligned Tungsten Filaments with Metal Cartridge
Qty:

each €79,75

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

Product # Unit Price* Add to Quote / Cart
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 Filaments with Stainless Steel Alignment Ring for SEM and TEM

Product # Unit Price* Add to Quote / Cart
14-JL1208 JEOL K-Type Base Tungsten Filaments with Metal Ring
Qty:

Box/6 €299,00

Pemtron Base Tungsten Filaments Pemtron Filaments for Pemtron SEMs

Product # Unit Price* Add to Quote / Cart
14-PT1211 Pemtron filament for Pemtron SEMs
Qty:

Box/10 €555,00

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

Product # Unit Price* Add to Quote / Cart
14-TN1209 Tescan Base Tungsten Filaments
Qty:

Box/10 €525,00

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

Product # Unit Price* Add to Quote / Cart
14-ZS1210 ZEISS Base Tungsten Filaments for Zeiss DSM SEMs/Zeiss TEMs and LEO 400/1400 series SEMs/LEO TEMs
Qty:

Box/10 €525,00

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

Further Reading: "The Life and Death of a Tungsten Hairpin Filament"



SEM Supplies

TEM Supplies

Calibration

Sample Preparation

AFM / SPM

  SEM Sample Stubs
  Sample Stub Adapters
  SEM Stage Adapters
  SEM Sample Holders
  Filaments/Cathodes
  Silicon Finder Grid
  Gatan 3View Pins
  FEI Volumescope Pins
  SEM Stub Storage Boxes
  Phenom Supplies
  JEOL NeoScope Supplies
  Hitachi TM series Supplies
  Field & lab sampler kits

Instruments


  Acoustic Enclosures
  Critical Point Dryers
  Cressington SEM Coaters
  HI-Res IR Chamberscope
  TEM Sample Prep
  TEM Grids
  TEM Support Films
  Graphene Films
  Grid Storage Boxes
  Cryo Grid Box
  TEM sample staining
  Filaments/Cathodes
  Cryo Pin for U-M
  Eyelash manipulators

FIB Supplies


  FIB Lift-out grids
  FIB low profile stubs
  FIB grid holders
  FIB pre-tilt holders
  FIB Grid Boxes
  SEM / FIB Magn. Calib.
  SEM Res. Test Spec.
  EDS / WDS Calibration
  TEM Calibration
  AFM / SPM Calibration
  LM Magn. Calibration

Vacuum Supplies


  Bullseye Vacuum Gauges
  D215V Vacuum Controller
  D801W Vacuum Gauges
  Quick-check Gauges
  KF/NW Vacuum Parts
  Vacuum oil and grease
  Vacuum sample storage
  Evaporation baskets
  Quartz QCM Crystals
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  Carbon Rods & Fibers
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  Supports & Substrates
  SEM Preparation Stands
  Tweezers
  Probes & Picks
  Cryo Jug & Container
  Applicators & Swabs
  Plastic Transfer Pipettes
  Cutting Tools / Scissors
  Conductive Paint/Cement
  Conductive Tapes &Tabs
  Non-conductive Adhesives
  Stainless Steel Mesh
  Sample Storage
  Tools
  Preparation mats & tiles
  Cleaning / Gloves
  Diamond Polishing Paste
  AFM/SPM Discs
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  AFM/SPM Disc Storage
  Cantilever Tweezers
  AFM/SPM Discs Tweezers
  Mica Discs
  HOPG Substrates


LM


  Correlative Cover Slips
  Glass Microscope Slides
  Glass Cover Slips
  Quartz Microscope Slides
  Quartz Cover Slips
  Black metal slides
  Slide storage boxes
  Calibration
  Plastic Transfer Pipettes