描述
MacDermid Alpha Micromax 5444 Co-Fireable Platable Silver Termination for BeO Resistors
Type: Platable Silver Termination
Application: BeO & Alumina Resistors
Viscosity: 160–200 Pa.s
Shelf Life: 6 months
Micromax 5444 is a platable silver termination developed for Micromax 00X0A resistors on BeO (beryllium oxide) substrates. It offers excellent post-plating adhesion, high acid resistance, thinner prints, fast firing on an 850°C/30 min profile, and a dense fired film. Cadmium, nickel, and phthalate free.
Micromax 5444 from MacDermid Alpha is a platable silver termination paste developed specifically for Micromax 00X0A resistors on BeO (beryllium oxide) substrates. It is also compatible with other substrates such as 96% alumina. The paste is co-fireable with Micromax 00X0A resistors, which allows the termination and resistor to be processed together in a single firing cycle. It provides excellent post-plating adhesion, high acid resistance, thinner prints, and a dense fired film. The formulation is cadmium, nickel, and phthalate free.
The paste has a viscosity range of 160–200 Pa.s and uses Micromax 8250 as the recommended thinner. Reported properties are based on 96% alumina and BeO substrates, printed with a 250 mesh stainless steel screen with approximately 10 μm emulsion to a dried thickness of 18 ± 2 μm. Allow prints to level at room temperature for 5–10 minutes, then dry at 150°C for 10 minutes. Fire on a 30-minute cycle with 10 minutes at a peak of 850°C. Store sealed at 5–30°C; unopened shelf life is 6 months.
Genuine MacDermid Alpha Micromax Imported Stock & Technical Support
We hold regular stock of authentic MacDermid Alpha Micromax 5444 platable silver termination paste. Original factory TDS and batch-specific COA are available on request for your BeO and alumina resistor programs.
Request Sample, TDS & Quotation
Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 5444
- Platable silver termination paste developed for Micromax 00X0A resistors on BeO
- Co-fireable with Micromax 00X0A resistors on BeO and other substrates
- Excellent post-plating adhesion for reliable plating results
- High acid resistance for demanding environments
- Thinner prints to reduce material usage per part
- Dense fired film for reliable termination performance
- Fast firing: 850°C / 30 min profile
- Cadmium, nickel, and phthalate free (no intentional addition)
- Viscosity 160–200 Pa.s for stable screen printing
- Screen: 250 mesh stainless steel, ~10 μm emulsion; dried print 18 ± 2 μm
- Also compatible with 96% alumina substrates
- Thinner Micromax 8250
Primary Applications
- BeO resistor termination — platable silver termination for Micromax 00X0A resistors on beryllium oxide
- Alumina resistor termination — also compatible with 96% alumina substrates
- Co-fired resistor builds — termination and resistor processed together
- Post-plating processes — where high acid resistance and post-plating adhesion matter
Full Technical Specifications
| Property | Typical Value | TDS Reference |
| Product Type | Platable silver termination paste | TDS: Silver Termination |
| Application | Silver hybrid Ag conductors | TDS: Silver hybrid Ag conductors |
| Solvent or Thinner | Micromax 8250 | TDS: Micromax 8250 |
| Viscosity | 160 to 200 Pa.s | TDS: Brookfield HAT, SC4-14/6R, 10 rpm, 25°C |
| Mask Mesh | 250 | TDS: 250 |
| Mask Emulsion | 10 μm | TDS: 10 μm |
| Dried Print Thickness | 18 ± 2 μm | TDS: 18±2 μm |
| Substrate Compatibility | BeO (beryllium oxide); also compatible with 96% alumina | TDS: BeO; also compatible with 96% alumina |
| Leveling Time | 5 to 10 minutes at room temperature | TDS: 5 to 10 minutes |
| Drying Schedule | 10 minutes at 150°C | TDS: 10 minutes at 150°C |
| Firing Profile | 30-minute cycle, 10 minutes at 850°C peak | TDS: 30-minute cycle, 10 min at 850°C |
| Post-Plating Adhesion | Excellent | TDS: Product benefits |
| Acid Resistance | High | TDS: Product benefits |
| Co-Fireable | Micromax 00X0A resistors on BeO and other substrates | TDS: Product benefits |
| Cadmium, Nickel and Phthalate Free | Yes (no intentional addition) | TDS: Product benefits |
| Shelf Life | 6 months | TDS: 6 months |
| Storage Temperature | 5 – 30 °C | TDS: 5°C – 30°C |
Note: All listed values are typical and may vary by batch. Values based on MacDermid Alpha official TDS. Independent qualification testing is required prior to production use. “Cadmium, Nickel and Phthalate free” as used herein means these substances are not intentional ingredients and are not intentionally added. Trace amounts may be present.
Recommended Processing Conditions
| Parameter | Recommended Value | TDS Reference |
| Mixing Prior to Use | Thoroughly mix to redisperse solids | TDS: thoroughly mix |
| Screen Mesh | 250 mesh stainless steel with approx. 10 μm emulsion | TDS: 250 mesh, 10 μm |
| Dried Print Thickness | 18 ± 2 μm | TDS: 18±2 μm |
| Leveling | 5–10 minutes at room temperature | TDS: 5-10 minutes |
| Drying | 150°C for 10 minutes | TDS: 150°C for 10 min |
| Firing | 30-minute cycle, 10 minutes at 850°C peak | TDS: 850°C x 10 min, 30 min cycle |
| Thinner | Micromax 8250 | TDS: Micromax 8250 |
| Substrates | BeO and 96% alumina | TDS: BeO; 96% alumina |
Handling and Storage Recommendations
| Storage Rules | Store tightly sealed in a clean, stable environment at 5-30°C. | TDS: 5°C – 30°C |
| Shelf Life | 6 months in unopened containers from date of shipment. | TDS: 6 months |
| Pre-use Preparation | Thoroughly mix prior to use. Some settling of solids may occur during storage. | TDS: thoroughly mix |
| Transportation | Under normal shipping conditions, no temperature control is expected. For extended transport periods, confirm product suitability. | TDS: normal shipping conditions |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | MacDermid Alpha Micromax 5444 original factory technical data sheet | Request TDS |
| COA | Batch-specific certificate of analysis | Request COA |
| SDS | Safety Data Sheet for handling and storage | Request SDS |
Frequently Asked Questions
Why is 5444 designed for BeO substrates?
The TDS states that 5444 is developed for Micromax 00X0A resistors on BeO (beryllium oxide) substrates. It is also compatible with 96% alumina, giving flexibility across different resistor substrate types.
What does co-fireable mean for 5444?
Co-fireable means the termination and the resistor can be processed together in the same firing cycle. The TDS lists 5444 as co-fireable with Micromax 00X0A resistors on BeO and other substrates.
What is the firing profile for 5444?
A 30-minute firing cycle with 10 minutes at a peak of 850°C. This is the standard profile used for property data in the TDS.
How does 5444 perform in post-plating?
The TDS lists excellent post-plating adhesion and high acid resistance. These characteristics support reliable performance when the termination goes through plating steps after firing.
What screen configuration is recommended for 5444?
A 250 mesh stainless steel screen with approximately 10 μm emulsion, printed to a dried thickness of 18 ± 2 μm.
Is 5444 free of cadmium, nickel and phthalate?
Per the TDS, cadmium, nickel, and phthalate are not intentional ingredients and are not intentionally added. Trace amounts may be present. Customers with strict compliance thresholds should verify against their own requirements.
What thinner should be used with 5444?
Micromax 8250 is the listed solvent or thinner. Using the recommended thinner helps keep viscosity and print behavior consistent with the TDS values.
Get MacDermid Alpha Micromax 5444 Bulk Pricing and Technical Support
We supply authentic MacDermid Alpha Micromax 5444 platable silver termination paste for BeO and alumina resistor programs. Contact our team for bulk quotations, sample availability, technical documentation, and application support.
Inquire Bulk Price & Technical Support
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. “Cadmium, Nickel and Phthalate free” as used herein means these substances are not intentional ingredients and are not intentionally added. Trace amounts may be present.
