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STIRRI LF HF PT

Chemical Family
Rosins

STIRRI LF HF PT™ is an advanced solder paste and tacky flux solution engineered for precision soldering tasks. With its halogen-free formulation, it ensures safety and compliance with regulatory standards like REACH (Europe). Designed with rosin-based chemistry, it guarantees reliable performance across various applications, including stencil work. Whether you're working on intricate electronic assemblies or complex circuit boards, STIRRI LF HF PT™ delivers exceptional results while prioritizing environmental responsibility.

Other characteristics

Brand
STIRRI
Product Type
Solder Paste
Application Area
Stencil
Keynotes

Rosin-based low-activity ROL0 (No-clean); World-class printability with pin testable residue; Halide & Halogen-free (EN14582) - ZERO!; Ultra-Low voiding. Clear residue. Optimal viscosity. Excellent pin transfer. REACH-complaint; Superior dispensing or stencil printing; Sharp definition at high-speeds, instant activity; Low solder balling and graping. Long stencil life; Easy to clean using IPA, solvents, water-based saponifiers, vapor degreaser or ultrasonic devices

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-LF-HF™ - available in many alloys including high reliability solder: Sn42Bi58, Sn42Bi57.6Ag0.4, Sn42Bi57Ag1, Sn96.5Ag3.5, Sn96.5Ag3.0Cu0.5, Sn99Ag0.3Cu0.7,Sn99.3Cu0.7, Sn100c, Sn100cv, LF-C2, TempSave B3

Technology
Ready-to-Use Products
Packaging Type
  • Cartridges
  • Jars
  • Syringe
Labeling Claims
  • Halide - Free
  • Halogen-free
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
Certifications and Compliance
REACH (Europe)
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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