描述
MacDermid Alpha Micromax 5082R Silver Covering Conductor for LTCC Brazing
Type: Silver Covering Conductor
Application: LTCC Ag/Pt Conductor
Series: 5081R + 5082R
Shelf Life: 6 months
Micromax 5082R is the top silver covering conductor in a two-component thick film system with Micromax 5081R. It enables high temperature solders and low temperature braze alloys on 96% alumina and Micromax GreenTape 951 LTCC. Phthalate and cadmium free, with high strength attachment and hermetic packaging capability.
Micromax 5082R from MacDermid Alpha is the silver covering conductor in a two-component, all thick film system paired with Micromax 5081R. The system enables high temperature solders and low temperature braze alloys on 96% alumina and the Micromax GreenTape 951 low temperature cofired ceramic system. It is also compatible with thick film resistors and conventional IC and lid attach processes. The formulation is phthalate and cadmium free.
The paste has a viscosity range of 225–325 Pa.s and uses Micromax 9180R as the recommended thinner. Print 5082R over the fired 5081R using a 325-mesh stainless steel screen with 13μm emulsion, at room temperature 20–23°C. Ensure 5082R completely covers the 5081R print. Allow prints to level over 10 minutes, then dry 10–15 minutes at 150°C. Fire at 850°C peak held for 10 minutes on a 30-minute cycle in air atmosphere. Total 5082R fired thickness should exceed 20 μm; the exact thickness depends on the braze alloy and brazing temperature. PGA reliability is ≥15 lbs under both thermal cycle (−40°C to 125°C, 200 cycles) and thermal aging (200 hrs in air at 150°C). Seal ring reliability is below 10⁻⁸ Atm cm³/s by helium leak test. Brazing is performed in nitrogen atmosphere with Au/Sn alloys, preforms, or pastes. 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 5082R silver covering conductor paste. Original factory TDS and batch-specific COA are available on request for your LTCC and brazing programs.
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Complete TDS, COA, and regulatory documentation available
Key Features of MacDermid Alpha Micromax 5082R
- Silver covering conductor paste for the two-component 5081R / 5082R thick film system
- Printed over the fired 5081R and must fully cover it
- Phthalate and cadmium free formulation (no intentional addition)
- High strength, high reliability attachment mechanism
- Supports hermetic packaging with seal ring reliability <10⁻⁸ Atm cm³/s
- Enables high temperature solders and low temperature braze alloys
- Compatible with thick film resistors and conventional IC and lid attach processes
- Suited to 96% alumina and Micromax GreenTape 951 LTCC substrates
- Viscosity 225–325 Pa.s for stable screen printing
- Screen: 325-mesh stainless steel with 13μm emulsion
- Firing: 850°C peak held 10 minutes on 30-minute cycle in air
- Total 5082R fired thickness >20 μm; PGA reliability ≥15 lbs under thermal cycle and thermal aging
Primary Applications
- LTCC Ag/Pt conductors — covering silver layer on GreenTape 951 and 96% alumina
- Multilayer hybrid circuits — top conductor layer in complex hybrid builds
- Hermetic brazed assemblies — pin, window frame, and heat sink attachment
- IC and lid attach — compatible with conventional IC and lid attach processes
Full Technical Specifications
| Property | Typical Value | TDS Reference |
| Product Type | Silver covering conductor paste | TDS: Silver Brazing Low Temperature Braze System |
| Application | LTCC Ag/Pt conductor | TDS: LTCC Ag/Pt conductor |
| Solvent or Thinner | Micromax 9180R | TDS: Micromax 9180R |
| Blend Member or Series | 5081R and 5082R | TDS: 5081R and 5082R |
| Viscosity | 225 to 325 Pa.s | TDS: Brookfield 2xHA, SC4-14/6R, 10 rpm, 25°C |
| Screen Type | 325-mesh stainless steel with 13 μm emulsion | TDS: 325-mesh, 13μm emulsion |
| Printing Requirement | Printed over fired 5081R; must completely cover the 5081R print | TDS: ensure 5082R completely covers the 5081R print |
| Printing Room Temperature | 20 to 23 °C | TDS: 20°C - 23°C |
| Printing Area | Class 10,000 recommended for complex hybrids and multilayer circuits | TDS: Class 10,000 printing area |
| Leveling | Over 10 minutes at room temperature | TDS: over 10 minutes |
| Drying Schedule | ≥10–15 minutes at 150°C | TDS: ≥10-15 minutes at 150°C |
| Firing Profile | 850°C peak held 10 minutes on 30-minute cycle, air atmosphere | TDS: 850°C peak, 10 min hold, 30 min cycle |
| Total 5082R Fired Thickness | > 20 μm | TDS: >20μm |
| PGA Reliability Thermal Cycle | ≥ 15 lbs (200 cycles, −40°C to 125°C rapid transfer) | TDS: ≥15 lbs |
| PGA Reliability Thermal Aging | ≥ 15 lbs (200 hrs in air at 150°C) | TDS: ≥15 lbs |
| Seal Ring Reliability | < 10⁻⁸ Atm cm³/s (He leak, 100 thermal cycles −25°C to +85°C) | TDS: <10⁻⁸ |
| Phthalate and Cadmium Free | Yes (no intentional addition) | TDS: Product benefits |
| Brazing Atmosphere | Nitrogen | TDS: nitrogen atmosphere |
| Brazing Alloys | Au/Sn braze alloys, preforms, or pastes | TDS: Au/Sn, preforms or pastes |
| 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. "Phthalate and cadmium 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 clean burr-free spatula; avoid air entrapment | TDS: 1-2 minutes |
| Room Temperature Before Printing | 20 to 23 °C | TDS: 20°C - 23°C |
| Screen Mesh | 325-mesh stainless steel with 13 μm emulsion | TDS: 325-mesh, 13μm |
| Printing Sequence | Print 5082R over the fired 5081R; ensure 5082R completely covers 5081R | TDS: Print onto fired 5081R |
| Leveling | Over 10 minutes at room temperature | TDS: over 10 minutes |
| Drying | ≥10–15 minutes at 150°C in well-ventilated oven or conveyor dryer | TDS: ≥10-15 min at 150°C |
| Firing | 850°C peak held 10 minutes on 30-minute cycle, air atmosphere | TDS: 850°C peak, 30 min cycle |
| Fired Thickness | Total 5082R fired thickness >20 μm, depending on braze alloy and brazing temperature | TDS: >20μm |
| Thinning | Not normally required; Micromax 9180R for minor adjustment | TDS: Micromax 9180R |
| Brazing | Nitrogen atmosphere with Au/Sn braze alloys, preforms, or pastes | TDS: nitrogen atmosphere |
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 |
| Contamination Control | Keep paste, screens, and tools free of metal contamination. Dust and lint can contribute to poor yields. | TDS: free of metal contamination |
| 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 5082R 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
Why is 5082R used together with 5081R?
The TDS describes 5081R and 5082R as a two-component, all thick film paste system. 5081R is printed first onto the fired substrate; 5082R is printed afterward as the covering conductor. Together they enable high temperature solders and low temperature braze alloys.
How much 5082R thickness is required after firing?
Total 5082R fired thickness should exceed 20μm. The exact thickness depends on the type of braze alloy and the brazing temperature used.
Which substrates suit the 5081R / 5082R system?
Two substrate families are named in the TDS: 96% alumina and Micromax GreenTape 951 LTCC. Multilayer hybrid circuits are also covered under the application scope.
How strong is the brazed joint after thermal cycling?
PGA reliability is ≥15 lbs after 200 cycles from −40°C to 125°C rapid transfer. PGA reliability after thermal aging is also ≥15 lbs after 200 hours in air at 150°C.
How does 5082R perform in hermetic seal testing?
Seal ring reliability is below 10⁻⁸ Atm cm³/s by helium leak test on a Kovar seal ring bonded to Micromax 951 GreenTape, across 100 thermal cycles from −25°C to +85°C.
Is 5082R free of phthalate and cadmium?
Per the TDS, phthalate and cadmium oxide 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.
What thinner should be used with 5082R?
Micromax 9180R is the listed solvent or thinner. Thinning is not normally required since the composition is optimized for screen printing. Use it only for small viscosity adjustments or to replace evaporation loss.
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We supply authentic MacDermid Alpha Micromax 5082R silver covering conductor paste for LTCC and brazing 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. "Phthalate and cadmium free" as used herein means these substances are not intentional ingredients and are not intentionally added. Trace amounts may be present.
