描述
Low Process Sensitivity Thick Film Resistor Paste MacDermid Alpha Micromax 1739R
Type: Resistor Paste
Pack: 100G / 1000G
Resistivity: 10Ω-1MΩ/sq
Viscosity: 145-210 Pa.s
Firing: 850°C / 60 min
Shelf Life: 6 months
MacDermid Alpha Micromax 1739R is a screen-printable resistor composition engineered to withstand variations in firing temperature, peak hold time, and resistor geometry while maintaining TCR below 100 ppm/°C and post-trim stability under 0.5% ΔR — ideal for high-volume hybrid circuit production environments.
Part of the Micromax Series 1700 materials system, Micromax 1739R is a thick-film resistor paste distinguished by its low sensitivity to process variations. This composition is specifically formulated to deliver consistent electrical performance despite fluctuations in firing temperature, dwell time at peak temperature, and printed resistor geometry. The paste maintains TCR below 100 ppm/°C even with blended formulations, ensuring predictable results across a wide manufacturing window.
With a sheet resistivity range spanning 10Ω/sq to 1MΩ/sq, Micromax 1739R supports diverse precision resistor network designs. The paste is optimized for 200-mesh stainless steel screens with 12-18 μm emulsion thickness, achieving a dried film thickness of 22-28 μm. The 60-minute air firing cycle with a 10-minute peak hold at 850°C is compatible with Micromax 7484R Ag/Pd conductor terminations on 96% alumina substrates. Standard packaging includes 100G and 1000G containers.
Genuine MacDermid Alpha Micromax Imported Stock & Technical Support
We maintain stable inventory of authentic MacDermid Alpha Micromax 1739R resistor paste. Factory-original TDS and batch-specific COA can be provided upon request for your hybrid circuit projects.
Request Sample, TDS & Quotation
Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 1739R
- Low process sensitivity — tolerates variations in firing temperature, peak time, and resistor geometry without performance degradation
- Wide resistivity range of 10Ω/sq to 1MΩ/sq — versatile coverage for diverse precision resistor network applications
- TCR below 100 ppm/°C — stable temperature coefficient even with blended resistor formulations
- Post-laser trim stability under 0.5% ΔR — consistent final resistance values after trimming operations
- Optimized for 850°C air firing — 60-minute cycle with 10-minute peak hold for repeatable production results
- Compatible with Micromax 7484R Ag/Pd terminations — validated with silver/palladium conductor systems
- Designed for high-volume manufacturing — robust process window reduces yield loss and improves throughput
- RoHS and REACH compliant — meets international environmental regulations
Primary Applications
- High-volume thick-film hybrid production — manufacturing environments where process stability is essential for yield optimization
- Automotive hybrid electronics — consistent performance across temperature variations in vehicle environments
- Industrial control and automation systems — reliable resistive elements for demanding industrial applications
- Telecommunications and networking infrastructure — robust resistor networks for communication equipment
Full Technical Specifications
| Property | Typical Value | Test / Reference |
| Product Type | Thick film resistor paste | — |
| Application | High reliability hybrid circuits, precision resistor networks | — |
| Packaging Specification | 100G, 1000G | Standard packaging |
| Resistivity Range | 10Ω-1MΩ/sq | 1.5mm × 1.5mm geometry |
| 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 |
| TCR Performance | <100 ppm/°C | 25-125°C / -55-25°C |
| Post Laser Trim Stability | <0.5% ΔR | All standard test conditions |
| Process Sensitivity | Low | Firing temperature, time, geometry |
| Termination Compatibility | Micromax 7484R Ag/Pd conductor | Prefired at 850°C |
| Substrate Compatibility | 96% alumina | — |
| Encapsulant | Glass encapsulation not required (QQ550 recommended for extreme environments) | — |
| Environmental Compliance | RoHS, REACH | — |
| 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, 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 |
| 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 | Micromax 7484R Ag/Pd conductor |
| 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 1739R 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 1739R?
Micromax 1739R is a low process sensitivity resistor paste from Series 1700, maintaining TCR below 100 ppm/°C and post-trim stability under 0.5% ΔR across manufacturing variations.
What resistivity range does Micromax 1739R cover?
It covers 10Ω/sq to 1MΩ/sq, accommodating diverse precision resistor network designs.
What is the viscosity of Micromax 1739R?
Viscosity is 145-210 Pa.s at 25°C (Brookfield HAT, SC4-14/6R, 10 rpm).
What firing profile is recommended for Micromax 1739R?
A 60-minute air firing cycle with 10-minute peak hold at 850°C, including 20 minutes above 800°C and 30 minutes above 600°C.
What is low process sensitivity and why does it matter?
Low process sensitivity means the paste tolerates variations in firing temperature, dwell time, and resistor geometry without significant performance drift — ensuring consistent results in volume production.
How stable is Micromax 1739R after laser trimming?
Average resistance shift is below 0.5% ΔR under all standard testing conditions.
What terminations are compatible with Micromax 1739R?
Micromax 7484R Ag/Pd conductor prefired at 850°C. Other Ag/Pd compositions also work well.
What packaging options are available for Micromax 1739R?
Standard 100G and 1000G containers. Bulk supply options available upon request.
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We supply authentic MacDermid Alpha Micromax 1739R resistor paste for high-volume hybrid circuit manufacturing. Contact us for bulk pricing, sample availability, technical documentation, and process 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.
