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STIRRI HT

Chemical Family
Rosins

STIRRI HT™ is a high-performance solder paste and tacky flux designed for demanding applications. Crafted with rosin-based chemistry, STIRRI HT™ ensures exceptional results in various tasks, including semiconductors, stencil work, and printed circuit boards. With its reliable performance and versatility, STIRRI HT™ is your go-to solution for precise soldering needs.

Product families

Electrical & Electronics — Parts & Components
  • Printed Circuit Boards (PCBs)

Other characteristics

Brand
STIRRI
Product Type
Solder Paste
Application Area
  • Printed Circuit Boards, Semiconductors, Stencil
  • Printed Circuit Boards
  • Semiconductors
  • Stencil
Markets
Electrical & Electronics
Keynotes

Rosin-based low-activity ROL0 (No-clean); Semiconductors, extended 350°C high- temperature reflow profiles, multi-step assemblies.; 350°C-450°C Hot Air Rework flux with high-solids content fine-tuned for clarity & minimum top-ups.; Top-class longevity and activity for leaded or lead-free alloys with wide application range.; Low voiding. Long stencil life & process window.; Exceptional printing edge definition.; Excellent wetting on most PCB finishes.; Compatible with enclosed printing heads.

Printing

Optimal print definition for fine pitch applications. Long stencil life of this product virtually eliminates waste of solder paste. For mesh/size determination refer to the Pitch Requirements chart below:

Viscosity
* Malcom @ 10 RPM @ 25°C x103 g/cm/s
Availability

STIRRI-HT™ - available in the following alloys of a low-oxide, spherical and uniformly sized powder: Sn10Pb88Ag2, Sn95Ag5, Sn95Sb5 & Sn5Pb93.5Ag1.5

Technology
Ready-to-Use Products
Packaging Type
  • Cartridges
  • Jars
  • Syringe
Product Families

Ready-to-Use Products — Other Ready-to-Use Products

Printer Operations

Stencil printer does not require any specific optimization, should be fully adjustable based on standard in-house process requirements, including high-speed printers; Print Speed: 20-200 mm/sec (add pressure for speed) Squeegee Pressure: 70-540 g/cm of blade (add for speed) Stencil Vac/Wipe: Every 10-25 prints or as necessary; Automated and vacuum cleaning systems for both stencil and misprinted boards. Manual cleaning using Isopropyl alcohol (IPA), co-solvents and/or ultrasonic scrubbers, vapor degreaser.

Packaging Information
Options with various viscosity and metal load for stencil printing and dispensing applications:
Printing
Jars, 1/4 NPT nozzle cartridges
Dispensing
Syringes, ProFlow cassettes
Shelf LIfe

Refrigerated storage at 5-7°C will prolong the solder paste shelf life to no less than 6 months. Solder Paste should be allowed to reach ambient temperature, normalize for about 6-8 hours before use. Tacky flux has 24 months shelf life stored in room temperature. Refrigeration won't extend shelf life. Normalize for 4-6 hours if stored refrigerated. Paste/flux in syringes and cartridges should be kept vertically, dispensing tip pointing down.. Note :Never freeze solder paste / flux!

Technical data

Table 1 of 1

1 row
CharacteristicValueUnit
Stencil Life (at 30 - 70% R/H & 20 - 25°C)max. 12hours

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