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Tungsten Coil Thermal Filament, F4 Geometry, 3 Wires x 0.030 in Diameter
Product Type: Thermal filament tungsten coil
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For model selection, accessory matching, platform compatibility or configuration confirmation, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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Handling must prevent mechanical deformation and unintended energization of this high-current, high-temperature tungsten coil. Confirm source holder fit and electrical compatibility before installation into a vacuum deposition system.
- Operational environment: Operate the filament only inside a vacuum deposition chamber with a compatible evaporation source holder.
- Electrical matching: Match the filament voltage, current, and power ratings to the evaporation power supply before connection.
- Geometry validation: Confirm the F4 geometry and source holder fit are compatible before installation.
- Mechanical integrity: Avoid bending or deforming the wire geometry during handling and installation.
This procedure covers installation of the tungsten coil filament into a vacuum deposition source and verification of power supply compatibility before energization. Energize the filament only after the source holder fit, electrical ratings, and vacuum conditions are confirmed.
Required Equipment: Vacuum deposition source holder, Evaporation power supply
- Confirm geometry compatibility
Confirm that the F4 filament geometry and source holder fit are compatible before installation. - Match power supply ratings
Match the rated voltage, current, and power to the deposition power supply output before connecting the filament. - Install filament in holder
Position the tungsten coil in the source holder without bending or deforming the wire geometry. - Secure and verify contact
Secure the filament in the holder and verify mechanical and electrical contact before chamber closure. - Evacuate chamber
Evacuate the deposition chamber to the required vacuum level before applying power. - Energize filament
Energize the filament only after the power supply settings and vacuum conditions are confirmed.
What is the significance of the F4 geometry and 3-wire x 0.030 in diameter construction for thermal evaporation performance?
The F4 geometry and 3-wire x 0.030 in diameter construction are designed to provide a specific resistance and surface area for controlled thermal evaporation at 1800°C. The 3-wire configuration increases the filament's electron emission surface and mechanical stability compared to single-wire designs, while the 0.030 in diameter balances current-carrying capacity (62 A) with evaporation rate uniformity. This geometry is matched to the specified 4.28 V and 265 W electrical parameters for consistent deposition rates.
What power supply specifications are required to drive this tungsten coil filament?
The filament requires a power supply capable of delivering 4.28 V at 62 A, corresponding to 265 W. The supply must be able to maintain stable current at the rated operating temperature of 1800°C. Additionally, the source holder must accommodate the F4 geometry with 6 coils, 4 in length, and an inner diameter ranging from 1/4 in to 1 3/4 in to ensure proper electrical contact and mechanical support.
What handling and storage precautions are necessary for tungsten coil thermal filaments?
Tungsten filaments are brittle and should be handled with clean gloves to avoid contamination and breakage. Store in a dry, inert environment to prevent oxidation, as tungsten can form volatile oxides at high temperatures. The filaments should be kept in their original packaging (5 or 10 pcs per pack) until use to maintain geometry integrity. Prior to installation, inspect for any deformation or damage that could cause uneven heating or arcing during evaporation.
This tungsten coil thermal filament with F4 geometry, 3 wires of 0.030 in diameter, is specified for 1800°C operation at 4.28V, 62A, 265W, enabling precise thermal evaporation in vacuum deposition systems when matched to the correct source holder and power supply.
Positive
- Defined tungsten filament geometry: 3-wire, 0.030 in diameter construction with F4 geometry provides a consistent source geometry for thermal evaporation, reducing trial-and-error in filament selection.
- Specified electrical and thermal parameters: Rated 1800°C operation with 4.28 V, 62 A, and 265 W allows direct comparison with existing power supply and source assembly requirements, streamlining procurement matching.
Trade-offs
- Geometry and holder compatibility required: The F4 geometry must be verified against the evaporation source holder before purchase; incorrect fit can render the filament unusable in the intended deposition system.
- Power supply matching necessary: The filament's voltage, current, and power ratings must exactly match the existing power supply capabilities, limiting direct substitution without electrical system verification.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
