描述
3M Fluorinert FC-43 Electronic Liquid High Boiling Thermal Fluid
Material: PFC (Perfluorocarbon)
Boiling Point: 174°C
Viscosity (25°C): 2.5 cSt
Pour Point: -50°C
Packing: 20 kg / drum
3M Fluorinert FC-43 is a clear, colorless, fully-fluorinated electronic liquid designed for high-temperature electronics testing and heat transfer applications. With a boiling point of 174°C and a wide liquid range of -50°C to 174°C, this high-purity perfluorocarbon (PFC) fluid is ideal for liquid burn-in testing, environmental stress screening, and vapor phase soldering processes. Conforming to Military Specification 883 for gross leak testing and thermal shock testing, FC-43 delivers reliable performance in demanding electronics quality and reliability tests.
FC-43 offers outstanding thermal and chemical stability, compatibility with sensitive materials, and leaves essentially no residue upon evaporation. Its excellent dielectric properties — dielectric strength 42 kV, dielectric constant 1.9, and electrical resistivity 3.4×10¹⁵ ohm cm — provide reliable electrical insulation for sensitive electronic components. Nonflammable with zero ozone depletion potential, FC-43 ensures safe and environmentally responsible operation in high-temperature testing and heat transfer applications.
Genuine 3M Imported Stock and Technical Support
We supply stable spot inventory of genuine 3M Fluorinert FC-43 electronic liquid. Official TDS, SDS, and batch COA documents are available for electronics testing, vapor phase soldering, and high-temperature heat transfer applications.
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Complete SDS, COA, and customs clearance documents available
Core Advantages of 3M Fluorinert FC-43 Electronic Liquid
- High boiling point: 174°C — ideal for liquid burn-in testing, vapor phase soldering, and high-temperature heat transfer
- Wide liquid range: -50°C to 174°C — versatile for diverse testing and thermal management applications
- Military Spec 883 compliant — approved for gross leak testing and thermal shock testing
- Excellent dielectric properties — dielectric strength 42 kV, dielectric constant 1.9, resistivity 3.4×10¹⁵ ohm cm
- Exceptional thermal and chemical stability — stable at high temperatures, compatible with sensitive materials
- Nonflammable — no flash point, safe operation in high-temperature testing environments
- Zero ozone depletion potential — environmentally responsible formulation
- Essentially no residue upon evaporation — clean performance for sensitive electronics testing
Main Applications
- Liquid burn-in testing — high-temperature reliability testing of electronic components
- Environmental stress screening — temperature cycling and stress testing of electronics
- Vapor phase soldering — high-temperature soldering processes
- Gross leak testing — Military Spec 883 indicator fluid for leak detection
- Thermal shock testing — hot fluid for extreme temperature transition testing
- High-temperature heat transfer — thermal management in electronics and semiconductor applications
- Reaction medium — inert fluid for chemical reactions requiring thermal control
Full Technical Parameters
| Property | Typical Value | Test Method |
| Material | Perfluorocarbon (PFC) | — |
| Appearance | Clear colorless liquid | Visual |
| Average Molecular Weight | 670 g/mol | — |
| Boiling Point (@1 atm) | 174°C | ASTM D1078 |
| Pour Point | -50°C | ASTM D97 |
| Liquid Density (25°C) | 1.86 g/cm³ | ASTM D891 |
| Kinematic Viscosity (25°C) | 2.5 cSt | ASTM D445 |
| Absolute Viscosity (25°C) | 4.7 cP | — |
| Liquid Specific Heat | 1100 J kg⁻¹ °C⁻¹ | — |
| Liquid Thermal Conductivity | 0.065 W m⁻¹ °C⁻¹ | — |
| Surface Tension | 16 dynes/cm | — |
| Refractive Index | 1.29 | — |
| Dielectric Strength (0.1″ gap) | 42 kV | ASTM D877 |
| Dielectric Constant (@1 kHz) | 1.9 | ASTM D150 |
| Electrical Resistivity | 3.4×10¹⁵ ohm cm | ASTM D257 |
| Ozone Depletion Potential | 0 | — |
| Flash Point | None | — |
| Shelf Life | 36 months | — |
Note: All listed figures are typical values and may vary by production batch. Complete independent qualification testing is required before mass production deployment.
Handling and Storage Recommendations
| Storage Rules | Store sealed original containers in a dry, well-ventilated area away from heat sources and direct sunlight. |
| Shelf Life | 36 months from date of manufacture when stored in original packaging at 21°C and 50% RH. |
| Forbidden Environments | Avoid exposure to open flames, strong oxidizing agents, and reactive metal powders. |
| Operation Protection | Maintain adequate ventilation. Wear nitrile protective gloves and anti-splash safety goggles during handling. |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | 3M Fluorinert FC-43 original factory technical data sheet | Request TDS |
| SDS | Safety data sheet covering transport, storage, and handling guidelines | Request SDS |
| COA | Batch-specific certificate of analysis for incoming goods inspection | Request COA |
Frequently Asked Questions
What is the boiling point of Fluorinert FC-43?
Fluorinert FC-43 has a boiling point of 174°C at 1 atm and a pour point of -50°C, offering a liquid range of -50°C to 174°C for high-temperature heat transfer and testing applications.
What is the viscosity of Fluorinert FC-43?
Fluorinert FC-43 has a kinematic viscosity of 2.5 cSt at 25°C and an absolute viscosity of 4.7 cP, providing good flow characteristics for heat transfer and testing.
What is the shelf life of Fluorinert FC-43?
Fluorinert FC-43 has a shelf life of 36 months from the date of manufacture when stored in original packaging at 21°C and 50% relative humidity.
What applications is Fluorinert FC-43 suitable for?
Fluorinert FC-43 is ideal for liquid burn-in testing, environmental stress screening, vapor phase soldering, gross leak testing (Military Spec 883), thermal shock testing, and high-temperature heat transfer applications.
Is Fluorinert FC-43 flammable?
No. Fluorinert FC-43 is nonflammable with no flash point, providing safe operation in high-temperature and electrically sensitive environments.
What is the dielectric strength of Fluorinert FC-43?
Fluorinert FC-43 has a dielectric strength of 42 kV (0.1 inch gap), a dielectric constant of 1.9, and electrical resistivity of 3.4×10¹⁵ ohm cm, making it an excellent dielectric fluid for electronics testing and cooling.
How does Fluorinert FC-43 compare to FC-40?
FC-43 has a higher boiling point (174°C vs 165°C) and higher viscosity (2.5 cSt vs 2.2 cSt) compared to FC-40. FC-43 also has a higher molecular weight (670 vs 650) and is specifically suited for burn-in testing and vapor phase soldering applications.
Related Fluorinert Series Fluids
Compare 3M Fluorinert electronic liquids for different heat transfer and application requirements.
| Product Grade | Boiling Point | Viscosity (25°C) | Pour Point | Dielectric Strength | Molecular Weight | Core Application |
| Fluorinert FC-43 | 174°C | 2.5 cSt | -50°C | 42 kV | 670 | Burn-in testing, vapor phase soldering |
| Fluorinert FC-40 | 165°C | 2.2 cSt | -57°C | 46 kV | 650 | Wide range heat transfer |
| Fluorinert FC-3283 | 128°C | 0.75 cSt | -65°C | >40 kV | 521 | Low viscosity heat transfer |
Get 3M Fluorinert FC-43 Bulk Pricing and Technical Support
We supply genuine 3M Fluorinert FC-43 electronic liquid for burn-in testing, vapor phase soldering, and high-temperature heat transfer applications. Contact us for bulk pricing, sample availability, technical documents, and application support.
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Disclaimer: All technical data on this page are for general guidance only and are not product specifications. Buyers must carry out independent trials and verify suitability before bulk ordering. Actual values may vary between production lots.
