描述
MacDermid Alpha Micromax 1748R Gold Compatible Resistor Paste, 90-110 kΩ/sq
Type: Gold Compatible Resistor Paste
Pack: 100G / 1000G
Resistivity: 90-110 kΩ/sq
Viscosity: 145-210 Pa.s
Firing: 850°C / 60 min
Shelf Life: 6 months
MacDermid Alpha Micromax 1748R is a screen-printable resistor composition from the 17G-Series, specifically formulated for gold (Au) conductor terminations. Offering the highest sheet resistivity in the series at 90-110 kΩ/sq with ultra-low noise of just 2 dB and TCR within ±100 ppm/°C, optimized for 850°C air firing in the most demanding high-ohm hybrid circuit applications.
As the highest-ohm member of the Micromax 17G-Series, Micromax 1748R is an ultra-high-resistance gold-compatible thick-film resistor paste engineered for the most demanding hybrid circuit applications requiring extreme resistance values. This composition delivers an exceptional sheet resistivity of 90-110 kΩ/sq with industry-leading ultra-low noise performance of just 2 dB — making it the quietest and highest-ohm paste in the 17G-Series. TCR values are consistently maintained within ±100 ppm/°C across hot and cold testing conditions.
The paste is optimized for 200-mesh stainless steel screens with 12-18 μm emulsion thickness, producing a dried film thickness of 22-28 μm. It 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 material 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 1748R gold compatible resistor paste. Factory-original TDS and batch-specific COA can be provided upon request for your ultra-high-ohm gold termination hybrid circuit projects.
Request Sample, TDS & Quotation
Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 1748R
- Highest sheet resistivity of 90-110 kΩ/sq — the highest resistance range in the 17G-Series for ultra-high-ohm applications
- Ultra-low noise performance of just 2 dB — the quietest paste in the 17G-Series for extremely sensitive signal circuits
- TCR within ±100 ppm/°C — stable temperature coefficient across hot and cold testing conditions
- 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
- Ultra-high-ohm gold-terminated precision hybrid circuits — extreme resistance networks on gold conductor systems
- Ultra-low-noise analog and sensor front-ends — 2 dB noise performance for photodetector and transducer signal conditioning
- Medical instrumentation and diagnostic equipment — ultra-low-noise components for sensitive medical electronics
- Aerospace and defense sensor systems — reliable extreme-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 | Ultra-high-ohm gold-terminated hybrid circuits | — |
| Packaging Specification | 100G, 1000G | Standard packaging |
| Resistivity | 90-110 kΩ/sq | 1.5mm × 1.5mm geometry, Au terminations |
| Viscosity (Brookfield HAT 10 rpm) | 145-210 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 | 2 dB | Ultra-low noise — lowest in 17G-Series |
| Short Term Overload Voltage | 280 V/mm | 5 sec duration, 1mm × 1mm resistor |
| Standard Working Voltage | 110 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 1748R 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 1748R?
Micromax 1748R is the highest-ohm gold-compatible resistor paste in the 17G-Series, offering 90-110 kΩ/sq resistivity with ultra-low noise of just 2 dB for precision hybrid circuit applications.
What resistivity value does Micromax 1748R offer?
Micromax 1748R provides a sheet resistivity of 90-110 kΩ/sq (90,000-110,000Ω/sq), the highest resistance range in the 17G-Series for ultra-high-ohm applications.
What is the viscosity of Micromax 1748R?
Viscosity is 145-210 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 1748R?
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 is the noise performance of Micromax 1748R?
Micromax 1748R delivers the lowest noise in the 17G-Series at just 2 dB, making it ideal for extremely sensitive analog and low-signal applications.
What conductor terminations are compatible with Micromax 1748R?
Micromax 1748R is specially formulated and tested for use with gold (Au) conductor terminations, delivering excellent post-trim stability.
What packaging sizes are available for Micromax 1748R?
Standard packaging includes 100G and 1000G containers. Bulk supply options are available upon request.
Get MacDermid Alpha Micromax 1748R Bulk Pricing and Technical Support
We supply authentic MacDermid Alpha Micromax 1748R gold compatible resistor paste for ultra-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.
