描述
MacDermid Alpha Micromax 5740A Au Wire Bondable Co-fire Gold Conductor for GreenTape 951 LTCC
Type: Co-fire Gold Conductor
System: GreenTape 951 LTCC
Viscosity: 200–270 Pa.s
Shelf Life: 6 months
Micromax 5740A is a co-fire inner and top layer gold conductor applied by screen printing, developed for compatibility with Micromax 951 Low Temperature Co-fired Dielectric Tape. It offers co-fire processing, Au wire bondability, high reliability, high yield, and high circuit density. Lead, cadmium, nickel, and phthalate free.
Micromax 5740A from MacDermid Alpha is a co-fire inner and top layer gold conductor applied by screen printing, developed for compatibility with Micromax 951 Low Temperature Co-fired Dielectric Tape. It is designed for use in the GreenTape 951 LTCC system, where it provides a co-fireable gold conductor layer that is also Au wire bondable. The composition supports high reliability, high yield, and high circuit density in multilayer LTCC circuits. The formulation is lead, cadmium, nickel, and phthalate free, with these substances not intentionally added.
The paste has a viscosity range of 200–270 Pa.s and uses Micromax 8250 as the recommended solvent or thinner. For detailed processing, refer to the 951 Low Temperature Co-fire Dielectric Tape Technical Datasheet. Screen mesh counts of 200–400 mesh stainless steel have been found suitable to achieve the required fired thickness; a 325 mesh stainless steel screen (30 μm wire; 12 μm emulsion build up) is specified. Mix thoroughly before use by slow, gentle hand stirring 1–2 minutes with a clean burr-free spatula, avoiding air entrapment. Optimum printing characteristics are generally achieved at 20–23°C. A Class 10,000 printing area is recommended for building complex hybrids and multilayer circuits. Allow prints to level for 5–10 minutes at room temperature, then dry for 5 minutes at 120°C. Fire in a well-ventilated belt, conveyor or static furnace with oxidizing conditions in the muffle and no exhaust gases entering the room. 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 5740A 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 5740A
- Co-fire inner and top layer gold conductor for the GreenTape 951 LTCC system
- Au wire bondable gold conductor layer
- Co-fire processing with Micromax 951 Low Temperature Co-fired Dielectric Tape
- High reliability for LTCC circuits
- High yield and high circuit density
- Lead, cadmium, nickel, and phthalate free (no intentional addition)
- Viscosity 200–270 Pa.s for stable screen printing
- Screen: 325 mesh stainless steel (30 μm wire; 12 μm emulsion build up)
- Printing at 20–23°C; Class 10,000 printing area recommended
- Drying: 120°C for 5 minutes after 5–10 minutes leveling
- Firing per 951 Low Temperature Co-fire Dielectric Tape Technical Datasheet
- Thinner Micromax 8250
Primary Applications
- LTCC inner and top layer conductors — co-fire gold conductor in GreenTape 951
- Gold conductor — per TDS application field
- Au wire bondable circuits — where gold wire bonding is required
- High-density multilayer LTCC circuits — where yield and circuit density matter
Full Technical Specifications
| Property | Typical Value | TDS Reference |
| Product Type | Co-fire inner and top layer gold conductor for LTCC | TDS: Au Co-fire Conductor Micromax GreenTape System |
| Application | Gold conductor | TDS: Gold conductor |
| Solvent or Thinner | Micromax 8250 | TDS: Micromax 8250 |
| Viscosity | 200 to 270 Pa.s | TDS: Brookfield HBT, SC4-14/6R, 10 rpm |
| Mask Mesh | 325 | TDS: 325 |
| Screen Type | 325 mesh stainless steel (30 μm wire; 12 μm emulsion build up) | TDS: 325 mesh stainless steel |
| Alternative Screen Range | 200–400 mesh stainless steel found suitable for required fired thickness | TDS: 200-400 mesh |
| Printing Room Temperature | 20 to 23 °C | TDS: 20-23°C |
| Printing Area | Class 10,000 recommended for complex hybrids and multilayer circuits | TDS: Class 10,000 |
| Leveling Time | 5 to 10 minutes at room temperature | TDS: 5-10 minutes |
| Drying Schedule | 5 minutes at 120°C | TDS: 5 minutes at 120°C |
| Firing Reference | Consult 951 Low Temperature Co-fire Dielectric Tape Technical Datasheet | TDS: Firing |
| Furnace Conditions | Well-ventilated belt, conveyor or static furnace; oxidizing conditions in muffle; no exhaust gases entering room | TDS: Firing |
| System Compatibility | Micromax GreenTape 951 Low Temperature Co-fired Dielectric Tape | TDS: Product Description |
| Co-fire Processing | Yes | TDS: Product benefits |
| Au Wire Bondable | Yes | TDS: Product benefits |
| High Reliability | Yes | TDS: Product benefits |
| High Yield | Yes | TDS: Product benefits |
| High Circuit Density | Yes | TDS: Product benefits |
| Lead, 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. “Lead, 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 | Slow, gentle hand stirring 1–2 minutes with a clean burr-free 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 (30 μm wire; 12 μm emulsion build up) | TDS: 325 mesh |
| Printing Area | Class 10,000 recommended for complex hybrids and multilayer circuits | TDS: Class 10,000 |
| Thinning | Not normally required; Micromax 8250 for minor adjustment | TDS: Micromax 8250 |
| Leveling | 5–10 minutes at room temperature | TDS: 5-10 minutes |
| Drying | 120°C for 5 minutes | TDS: 5 minutes at 120°C |
| Firing | Consult 951 Low Temperature Co-fire Dielectric Tape Technical Datasheet; fire in well-ventilated belt, conveyor or static furnace | TDS: Firing |
| Contamination Control | Keep composition, screens, and tools free of metal contamination; avoid dust, lint, and particulate matter | TDS: General |
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 5740A 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 5740A suitable for LTCC inner and top layers?
5740A is a co-fire inner and top layer gold conductor, developed to be compatible with Micromax 951 Low Temperature Co-fired Dielectric Tape. It supports co-fire processing and is Au wire bondable, making it suitable for multilayer LTCC circuits that require gold wire bonding.
What screen setup is recommended for 5740A?
A 325 mesh stainless steel screen with 30 μm wire and 12 μm emulsion build-up is specified. For achieving the required fired thickness, 200–400 mesh stainless steel screens have been found suitable.
Why is Class 10,000 printing area recommended?
The TDS notes that a Class 10,000 printing area is recommended for building complex hybrids and multilayer circuits, otherwise severe yield losses could occur. It helps control particulate contamination that can affect fine features.
How should 5740A be dried and fired?
Allow prints to level for 5–10 minutes at room temperature, then dry for 5 minutes at 120°C. For firing details, consult the 951 Low Temperature Co-fire Dielectric Tape Technical Datasheet. Fire in a well-ventilated furnace with oxidizing conditions in the muffle.
Does 5740A support Au wire bonding?
Yes. The TDS lists Au wire bondable as a product benefit, making 5740A suitable for LTCC circuits that require gold wire bonding on the inner or top conductor layers.
Is 5740A free of lead, cadmium, nickel and phthalate?
Per the TDS, lead, 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.
How should 5740A 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 5740A 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. “Lead, 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.
