描述
MacDermid Alpha Micromax 5742 Au and Al Wire Bondable Co-fire Gold Conductor for GreenTape 951 LTCC
Type: Co-fire Gold Conductor
System: GreenTape 951 LTCC
Solids: 79.5–81.5%
Shelf Life: 6 months
Micromax 5742 is a co-fired gold conductor for the Micromax GreenTape 951 system. It can be used as an internal or external conductor for all gold systems, or as an external conductor on traditional mixed metal systems. It is wire bondable with 1 mil Au and 1 mil Al wire. When used with GreenTape 951 compatible via fill pastes, it offers high reliability, high conductivity, and high circuit density.
Micromax 5742 from MacDermid Alpha is a co-fired gold conductor for the Micromax GreenTape 951 system. It can be used as an internal or external conductor for all gold systems, or as an external conductor on traditional mixed metal systems, giving flexibility across LTCC design architectures. The conductor is wire bondable with both 1 mil Au and 1 mil Al wire, supporting gold and aluminum wire bonding on the same material. When used with GreenTape 951 compatible via fill pastes, the system offers high reliability, high conductivity, and high circuit density.
The paste carries 79.5–81.5% solids and a viscosity range of 100–180 Pa.s. Micromax 8250 is the listed solvent or thinner. Print directly onto unfired GreenTape 951 using thick film printing methods and a vacuum stone or other support structure that uniformly distributes vacuum. A 325 mesh stainless steel screen with 12 μm emulsion is specified, with printing best performed at 20–23°C. Mix thoroughly before use by slow, gentle hand stirring 1–2 minutes with a clean burr-free flexible plastic spatula, avoiding air entrapment. Allow prints to level at room temperature, then dry in a well-ventilated oven or conveyor dryer at 80–120°C for 5–10 minutes; do not over-dry. Typical lamination conditions are 3000 psi at 70°C for 10 minutes. Consult the GreenTape 951 technical data sheet for firing recommendations. Clean-up uses 1-propoxy-2-propanol. 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 5742 co-fire gold conductor. Original factory TDS and batch-specific COA are available on request for your LTCC programs.
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Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 5742
- Co-fired gold conductor for the Micromax GreenTape 951 system
- Usable as internal or external conductor for all gold systems
- Usable as external conductor on traditional mixed metal systems
- Au and Al wire bondable (1 mil)
- High reliability, high conductivity, high circuit density
- Solids 79.5–81.5% for consistent deposition
- Viscosity 100–180 Pa.s for stable screen printing
- Resistivity ≤5 mΩ/sq at 9μm fired thickness
- Dried line resolution 125 μm
- Screen: 325 mesh stainless steel with 12 μm emulsion
- Dried thickness 13–18 μm; fired thickness 6–12 μm
- Thinner Micromax 8250; clean-up 1-propoxy-2-propanol
Primary Applications
- LTCC internal and external conductors — gold conductor in GreenTape 951
- Gold conductor — per TDS application field
- Au and Al wire bondable circuits — 1 mil Au and 1 mil Al wire bonding
- Mixed metal LTCC systems — external conductor for traditional mixed metal architectures
Full Technical Specifications
| Property | Typical Value | TDS Reference |
| Product Type | Gold co-fireable conductor for LTCC | TDS: Gold-Cofireable Conductor |
| Application | Gold conductor | TDS: Gold conductor |
| Solvent or Thinner | Micromax 8250 | TDS: Micromax 8250 |
| Solid Content | 79.5 to 81.5 % | TDS: 79.5 to 81.5 % |
| Viscosity | 100 to 180 Pa.s | TDS: Brookfield HAT #14 spindle, 10 RPM @ 25°C |
| Mask Mesh | 325 | TDS: 325 |
| Mask Emulsion | 12 μm | TDS: 12 μm |
| Drying Time | 5 to 10 minutes | TDS: 5 to 10 min |
| Drying Temperature | 80 to 120 °C | TDS: 80 to 120 °C |
| Theoretical Coverage | 80 to 90 cm²/g | TDS: at 25μm wet thickness |
| Recommended Film Thickness (Dried) | 13 to 18 μm | TDS: 13 to 18 μm |
| Recommended Film Thickness (Fired) | 6 to 12 μm | TDS: 6 to 12 μm |
| Print Resolution (Dried Line) | 125 μm | TDS: 125 μm |
| Leveling Time | 5 to 10 minutes | TDS: 5 to 10 min |
| Resistivity | ≤ 5 mΩ/sq at 9μm fired thickness | TDS: ≤5 mOhm per square |
| Substrate | Micromax GreenTape 951 | TDS: Substrates |
| Screen Type | 325 mesh stainless steel with 12 μm emulsion | TDS: 325 mesh, 12 μm emulsion |
| Printing Room Temperature | 20 to 23 °C | TDS: 20-23°C |
| Lamination Conditions | 3000 psi at 70°C for 10 minutes | TDS: 3000 psi at 70°C for 10 min |
| Firing | Consult GreenTape 951 technical data sheet; fire in well-ventilated conveyor or static furnace with oxidizing conditions | TDS: Firing |
| Wire Bonding | Au and Al wire bondable (1 mil) | TDS: Product benefits |
| Conductor Use | Internal or external conductor for all gold systems; external conductor on traditional mixed metal systems | TDS: Product Description |
| Clean-up Solvent | 1-Propoxy-2-Propanol | TDS: 1-Propoxy-2-Propanol |
| High Reliability | Yes | TDS: Product benefits |
| High Conductivity | Yes | TDS: Product benefits |
| High Circuit Density | Yes | 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.
Recommended Processing Conditions
| Parameter | Recommended Value | TDS Reference |
| Mixing Prior to Use | Slow, gentle hand stirring 1–2 minutes with a clean burr-free flexible plastic spatula; avoid air entrapment | TDS: 1-2 minutes |
| Room Temperature Before Printing | 20 to 23 °C | TDS: 20-23°C |
| Screen Mesh | 325 mesh stainless steel with 12 μm emulsion | TDS: 325 mesh, 12 μm |
| Printing Substrate | Directly onto unfired GreenTape 951 with a vacuum stone or equivalent support | TDS: Printing |
| Thinning | Micromax 8250 for minor viscosity adjustments or to replenish solvent loss; avoid over-thinning | TDS: Micromax 8250 |
| Leveling | 5–10 minutes at room temperature | TDS: 5-10 minutes |
| Drying | 80–120°C for 5–10 minutes; do not over-dry | TDS: 80-120°C, 5-10 min |
| Lamination | 3000 psi at 70°C for 10 minutes | TDS: 3000 psi at 70°C, 10 min |
| Firing | Consult GreenTape 951 technical data sheet; well-ventilated conveyor or static furnace with oxidizing conditions | TDS: Firing |
| Clean-up Solvent | 1-Propoxy-2-Propanol | TDS: 1-Propoxy-2-Propanol |
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 5742 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
What makes 5742 different from 5740A?
Both are co-fire gold conductors for the GreenTape 951 LTCC system. 5742 is wire bondable with both 1 mil Au and 1 mil Al wire, while 5740A is listed as Au wire bondable. 5742 also specifies usable as an external conductor on traditional mixed metal systems.
Where can 5742 be used in an LTCC stack?
Per the TDS, 5742 can be used as an internal or external conductor for all gold systems, or as an external conductor on traditional mixed metal systems. This gives flexibility in LTCC design depending on the overall metal scheme.
What resistivity and print resolution does 5742 offer?
Resistivity is 5 mΩ/sq or less at 9μm fired thickness. Dried line resolution is 125 μm, which supports fine-line features in LTCC circuits.
What are the lamination conditions for 5742?
Typical lamination conditions are 3000 psi at 70°C for 10 minutes, following the recommended processing parameters in the GreenTape Design Guideline and the GreenTape 951 product data sheets.
Why does the TDS say “do not over-dry” for 5742?
The recommended dry is 80–120°C for 5–10 minutes after leveling. Over-drying can affect the laminate-and-fire behavior with GreenTape 951, so the TDS explicitly warns against extending the dry time or temperature beyond the recommendation.
What firing recommendations apply to 5742?
The TDS directs users to consult the GreenTape 951 technical data sheet for firing recommendations. Fire in a well-ventilated conveyor or static furnace with optimized airflow and extraction rates to ensure oxidizing conditions in the firing zone.
How should 5742 be stored?
Store tightly sealed at 5–30°C in a clean, stable environment. Unopened shelf life is 6 months from shipment. Some settling may occur, so mix thoroughly before reuse.
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We supply authentic MacDermid Alpha Micromax 5742 co-fire gold conductor for LTCC programs. Contact our team for bulk quotations, sample availability, technical documentation, 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.
