描述
MacDermid Alpha Micromax 1729 Resistor Paste Optimized for 850°C Air Firing
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 1729 is engineered for a 60-minute air firing cycle with 10-minute peak hold at 850°C. The composition delivers 10Ω/sq to 1MΩ/sq sheet resistivity with TCR below 100 ppm/°C and post-trim stability under 0.5% ΔR for high reliability hybrid circuit manufacturing.
As part of the Micromax Series 1700 materials system, Micromax 1729 is a thick-film resistor composition specifically developed for air firing at 850°C. This formulation ensures consistent electrical performance across production batches with minimal sensitivity to firing profile variations — a critical advantage for high-volume hybrid circuit manufacturing. The material maintains TCR below 100 ppm/°C even when blended with adjacent resistance values.
The paste supports a sheet resistivity range from 10Ω/sq to 1MΩ/sq and 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 firing cycle with a 10-minute peak hold at 850°C delivers repeatable results on 96% alumina substrates with Micromax 7484R Ag/Pd conductor terminations. Available in 100G and 1000G containers, the paste is RoHS and REACH compliant.
Genuine MacDermid Alpha Micromax Imported Stock & Technical Support
We maintain stable inventory of authentic MacDermid Alpha Micromax 1729 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 1729
- Optimized for 850°C air firing — 60-minute cycle with 10-minute peak hold for consistent production results
- Wide resistivity range of 10Ω/sq to 1MΩ/sq — supports diverse precision resistor network designs
- TCR below 100 ppm/°C — stable temperature coefficient even with blended resistor formulations
- Post-laser trim stability under 0.5% ΔR — dependable performance after trimming under all standard test conditions
- Low process sensitivity — withstands variations in firing temperature, peak hold time, and resistor geometry
- Compatible with Micromax 7484R Ag/Pd terminations — validated with silver/palladium conductor systems
- RoHS and REACH compliant — meets international environmental standards
- 6-month shelf life — stable storage in unopened containers at 5-30°C
Primary Applications
- High-volume hybrid circuit manufacturing — production environments requiring consistent firing performance at 850°C
- Precision resistor networks for industrial electronics — stable resistive elements for industrial control and automation
- Automotive hybrid modules — robust components for under-hood and vehicle electronics
- Telecommunications infrastructure — reliable resistor networks for base stations and 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 1729 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 1729?
Micromax 1729 is a Series 1700 resistor paste delivering TCR below 100 ppm/°C, post-trim stability under 0.5% ΔR, and an 850°C air firing profile for high reliability hybrid circuits.
What resistivity range does Micromax 1729 cover?
It covers 10Ω/sq to 1MΩ/sq, accommodating diverse precision resistor network designs.
What is the viscosity of Micromax 1729?
Viscosity is 145-210 Pa.s at 25°C (Brookfield HAT, SC4-14/6R, 10 rpm).
What firing profile is recommended for Micromax 1729?
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 dried film thickness is recommended for Micromax 1729?
Recommended dried film thickness is 22-28 μm using 200 mesh screens and 12-18 μm emulsion.
How stable is Micromax 1729 after laser trimming?
Average resistance shift is below 0.5% ΔR under all standard testing conditions.
What terminations are compatible with Micromax 1729?
Micromax 7484R Ag/Pd conductor prefired at 850°C. Other Ag/Pd compositions also work well.
What packaging options are available for Micromax 1729?
Standard 100G and 1000G containers. Bulk supply options available upon request.
Get MacDermid Alpha Micromax 1729 Bulk Pricing and Technical Support
We supply authentic MacDermid Alpha Micromax 1729 resistor paste for high reliability hybrid circuit manufacturing with optimized 850°C air firing. Contact us for bulk pricing, sample availability, technical documentation, and process 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.
