UHV Store of Switzerland - Ultra High Vacuum Technology
Pyrolytic Boron Nitride (PBN-PG) Heaters for UHV, MBE and Semiconductor Applications
Pyrolytic Boron Nitride (PBN-PG) Heaters for UHV, MBE and Semiconductor Applications
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High-purity PBN-PG heaters for Molecular Beam Epitaxy (MBE), semiconductor processing, thin-film deposition, crystal growth, surface science, and ultra-high vacuum (UHV) applications. Compatible replacement heaters are available for selected HTR, VG, HSOMPBN50 and custom vacuum heating systems.
Our Pyrolytic Boron Nitride (PBN-PG) heaters are high-performance heating elements designed for demanding high-temperature applications requiring exceptional purity, temperature stability, and long service life.
Each heater features a three-layer PBN-PG-PBN structure, combining a pyrolytic graphite (PG) heating element with fully encapsulating pyrolytic boron nitride (PBN) insulation layers. Manufactured using Chemical Vapor Deposition (CVD), this advanced ceramic composite provides excellent electrical insulation, outstanding chemical resistance, and contamination-free operation even at elevated temperatures.
These heaters are widely used as replacement heaters for existing vacuum systems as well as in new custom-built scientific and industrial equipment.
Ideal Applications
- Molecular Beam Epitaxy (MBE)
- Semiconductor wafer processing and annealing
- Thin-film deposition systems
- Crystal growth equipment
- Surface science and UHV research
- Metal evaporation sources
- High-temperature materials research
- Optoelectronic device fabrication
- Superconducting materials research
- Custom vacuum heating applications
Key Features
- Ultra-high purity (up to 99.999%)
- High-temperature operation up to 1450 °C (model dependent)
- PTC heater technology for stable operation
- Excellent thermal uniformity
- Fast thermal response
- High electrical insulation
- Outstanding resistance to thermal shock
- Chemically inert to most metals, liquids, and gases
- Low outgassing for HV/UHV applications
- Long service life in vacuum and inert atmospheres
- Custom geometries and electrical specifications available
Material and Manufacturing Data
- Material Structure: PBN-PG-PBN
- Manufacturing Process: Chemical Vapor Deposition (CVD)
- Density: 1.95–2.20 g/cm³
- General Tolerances: ISO 2768-cL (unless otherwise specified)
- Standard and custom dimensions available
- Designed for vacuum, UHV, and inert gas operation
Technical Specifications
| Model | Active Area | Voltage | Recommended Current Limit | Max. Power | Tmax | Overall Dimensions | Compatibility |
|---|---|---|---|---|---|---|---|
| Series 1001 | Ø25 mm | 35 V | 8 A | 220 W | 1300 °C | 35 × 25 × 1.4 mm | HTR1001-type compatible |
| FV(CW) | 24 × 15 mm | 40 V | 3 A | 120 W | 1300 °C | 24 × 15 × 2 mm | HSOMPBN50 compatible |
| (D)vG | 15 × 12.5 mm | 38 V | 2.9 A | 110 W | 1300 °C | Legacy VG-compatible heater | |
| Series 1002 | Ø50 mm | 110 V | 16 A | 1440 W | 1300 °C | 60 × 50 × 1.4 mm | HTR1002-type compatible |
| Series 1003 | Ø75 mm | 170 V | 17 A | 2300 W | 1300 °C | 94 × 75 × 1.4 mm | HTR1003-type compatible |
| Series 1004 | Ø100 mm | 210 V | 26 A | 3500 W | 1300 °C | 118 × 100 × 1.4 mm | HTR1004-type compatible |
| OX(AdN) | 30 × 22 mm | 40 V | 19 A | — | 1450 °C | 70 × 22 × 2 mm | — |
Compatible replacement heaters for many existing PBN/PG heater installations. Custom geometries, dimensions, voltages, power ratings, thermocouple integration, and electrical characteristics are available upon request.
PTC Heater Technology
All heaters listed above utilize PTC (Positive Temperature Coefficient) technology.
As heater temperature increases, electrical resistance also increases. This behavior improves thermal stability, reduces the risk of thermal runaway, and enables predictable and repeatable operation over a wide temperature range.
For best performance, operation with a power supply featuring adjustable current limiting is recommended.
The values listed under Recommended Current Limit represent suggested power-supply settings and should not be interpreted as the actual operating current at maximum heater power. Actual current consumption depends on heater temperature, operating conditions, and heater geometry.
Operating Atmosphere
PBN/PG heaters are optimized for operation in vacuum (HV/UHV) and inert gas environments, where maximum temperature capability and service life are achieved.
While short-term operation in air may be possible depending on heater design and temperature, maximum performance and heater lifetime are achieved under vacuum or inert gas conditions.
For demanding high-temperature applications, operation in vacuum or inert gas is strongly recommended.
Customization Options
To customize your PBN-PG heater, please provide:
- Overall dimensions (length, width, thickness, diameter)
- Required active heating area
- Desired geometry or drawing
- Operating temperature range
- Application details
- Operating atmosphere (vacuum, inert gas, air)
- Voltage and power requirements
- Mounting features (holes, slots, grooves, tabs)
- Integrated thermocouple requirements
- Special material or purity requirements
We offer fast delivery, competitive pricing, and fully customized solutions for research, semiconductor, vacuum coating, crystal growth, and industrial high-temperature applications.
