描述
MacDermid Alpha Micromax 1728 Gold Compatible Thick Film Resistor Paste, 0.9-1.1 kΩ/sq
Type: Gold Compatible Resistor Paste
Pack: 100G / 1000G
Resistivity: 0.9-1.1 kΩ/sq
Viscosity: 125-175 Pa.s
Firing: 850°C / 60 min
Shelf Life: 6 months
MacDermid Alpha Micromax 1728 is a screen-printable resistor composition from the 17G-Series, specifically formulated and tested for gold (Au) conductor terminations. Offering a sheet resistivity of 0.9-1.1 kΩ/sq with TCR within ±100 ppm/°C and low noise (8-13 dB), optimized for 850°C air firing in high-ohm hybrid circuit applications.
As a member of the Micromax 17G-Series, MacDermid Alpha Micromax 1728 is a gold-compatible thick-film resistor paste engineered specifically for hybrid circuits utilizing gold conductor metallization. This high-ohm composition delivers a sheet resistivity of 0.9-1.1 kΩ/sq with TCR values consistently within ±100 ppm/°C across hot and cold testing conditions. The paste exhibits excellent post-laser trim stability in both encapsulated and unencapsulated configurations, along with low noise characteristics (8-13 dB) ideal for precision analog circuits.
Optimized for 200-mesh stainless steel screens with 12-18 μm emulsion, the material produces a dried film thickness of 22-28 μm and supports a 60-minute air firing cycle with a 10-minute peak hold at 850°C. The 17G-Series is fully blendable — adjacent members blend smoothly with no blend breaks. The paste is free from intentionally added phthalates, cadmium and nickel oxide, and is RoHS compliant. Standard packaging includes 100G and 1000G containers.
Genuine MacDermid Alpha Micromax Imported Stock & Technical Support
We maintain stable inventory of authentic MacDermid Alpha Micromax 1728 gold compatible resistor paste. Factory-original TDS and batch-specific COA can be provided upon request for your gold termination hybrid circuit projects.
Request Sample, TDS & Quotation
Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 1728
- Sheet resistivity of 0.9-1.1 kΩ/sq — high-ohm range for precision resistor applications on gold metallization
- TCR within ±100 ppm/°C — stable temperature coefficient across hot and cold testing conditions
- Low noise performance of 8-13 dB — suitable for precision analog and low-signal applications
- Qualified and tested on gold conductor terminations — specifically formulated for Au-terminated hybrid circuits
- Excellent post-laser trim stability — reliable performance in both encapsulated and unencapsulated configurations
- Fully blendable 17G-Series composition — adjacent members blend smoothly with no blend breaks
- Optimized for 850°C air firing — 60-minute cycle with 10-minute peak hold for repeatable production
- Phthalate, cadmium and nickel oxide free — formulated without intentional addition of restricted substances
Primary Applications
- High-ohm gold-terminated hybrid microcircuits — precision resistor networks on gold conductor systems requiring elevated resistance values
- Precision analog and sensor interface circuits — low-noise resistive elements for signal conditioning and measurement
- Medical monitoring and diagnostic electronics — stable, low-noise components for gold-based medical hybrid assemblies
- Aerospace and defense instrumentation — reliable high-ohm resistive elements for mission-critical gold-terminated modules
Full Technical Specifications
| Property | Typical Value | Test / Reference |
| Product Type | Thick film resistor paste | — |
| Application | Gold-terminated hybrid circuits, high-ohm precision networks | — |
| Packaging Specification | 100G, 1000G | Standard packaging |
| Resistivity | 0.9-1.1 kΩ/sq | 1.5mm × 1.5mm geometry, Au terminations |
| Viscosity (Brookfield HAT 10 rpm) | 125-175 Pa.s | SC4-14/6R, 25°C |
| Recommended Mesh | 200 mesh | Stainless steel |
| Emulsion Thickness | 12-18 μm | — |
| Recommended Film Thickness | 22-28 μm | Dried thickness |
| Drying Time | 10-15 min | 150°C |
| Drying Temperature | 150°C | — |
| Firing Peak Temperature | 850°C | 10 min at peak, 60 min total |
| Hot TCR (25-125°C) | -100 to 100 ppm/°C | Au terminations |
| Cold TCR (-55-25°C) | -100 to 100 ppm/°C | Au terminations |
| Noise | 8-13 dB | — |
| Short Term Overload Voltage | 75 V/mm | 5 sec duration, 1mm × 1mm resistor |
| Standard Working Voltage | 30 V/mm | 0.4 × Short Term Overload Voltage |
| Termination Compatibility | Gold conductor (Au) | Qualified and tested on Au terminations |
| Substrate Compatibility | 96% alumina | — |
| Encapsulant | Glass encapsulation not required (QQ550, QQ620 recommended for extreme environments) | — |
| Environmental Compliance | RoHS, Phthalate/Cd/NiO free | — |
| Shelf Life | 6 months in unopened containers | — |
| Storage Temperature | 5-30°C | — |
Note: All listed values are typical and may vary by batch. Independent qualification testing is required prior to production use.
Recommended Processing Conditions
| Parameter | Recommended Value |
| Mixing Prior to Use | Slow gentle hand-stirring with clean spatula, 1-2 minutes |
| Optimal Printing Temperature | 20-23°C |
| Screen Mesh | 200 mesh stainless steel |
| Emulsion Thickness | 12-18 μm |
| Dried Film Thickness | 22-28 μm (25 ± 3 μm) |
| Leveling Time | ≥10 minutes at room temperature |
| Drying Temperature | 150°C |
| Drying Time | 10-15 minutes |
| Firing Peak Temperature | 850°C |
| Total Firing Cycle | 60 minutes (10 min at peak) |
| Firing Atmosphere | Air |
| Substrate | 96% alumina |
| Termination | Gold conductor (Au) |
| Resistor Geometry | 1.5mm × 1.5mm |
Handling and Storage Recommendations
| Storage Rules | Store in tightly sealed containers in clean, stable environment at 5-30°C. |
| Shelf Life | 6 months in unopened containers from date of shipment. |
| Pre-use Preparation | Thoroughly mix prior to use. Some settling may occur during storage. |
| Thinning | Not normally required; use Micromax 4036 thinner sparingly for evaporative losses. |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | MacDermid Alpha Micromax 1728 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 is MacDermid Alpha Micromax 1728?
Micromax 1728 is a gold-compatible resistor paste from the 17G-Series, designed for high-ohm hybrid circuit applications requiring stable TCR within ±100 ppm/°C and low noise performance (8-13 dB).
What resistivity value does Micromax 1728 offer?
Micromax 1728 provides a sheet resistivity of 0.9-1.1 kΩ/sq (900-1100Ω/sq), suitable for high-ohm precision resistor applications on gold-terminated hybrid circuits.
What is the viscosity of Micromax 1728?
Viscosity is 125-175 Pa.s, measured with a Brookfield HAT viscometer using SC4-14/6R spindle at 10 rpm and 25°C.
What firing profile is recommended for Micromax 1728?
A 60-minute air firing cycle with a 10-minute peak hold at 850°C is recommended, including 20 minutes above 800°C and 30 minutes above 600°C.
What conductor terminations are compatible with Micromax 1728?
Micromax 1728 is specially formulated and tested for use with gold (Au) conductor terminations, delivering excellent post-trim stability on gold-terminated circuits.
Is Micromax 1728 blendable with other resistor pastes?
Yes, it is part of the fully blendable 17G-Series. Adjacent members blend smoothly at all ratios with no blend breaks.
What is the noise performance of Micromax 1728?
Micromax 1728 delivers low noise of 8-13 dB, making it well-suited for precision analog circuits and low-signal applications requiring minimal electrical noise.
What packaging sizes are available for Micromax 1728?
Standard packaging includes 100G and 1000G containers. Bulk supply options are available upon request.
Get MacDermid Alpha Micromax 1728 Bulk Pricing and Technical Support
We supply authentic MacDermid Alpha Micromax 1728 gold compatible resistor paste for high-ohm gold-terminated hybrid circuit applications. Contact us for bulk pricing, sample availability, original technical documentation, and application engineering 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.
