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| Exhibitions | | | | Press releases | | |
#36, 2010 VISION Award |
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#35, Drop by Drop |
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#34, New heads at MARTIN |
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#33, The New Gold Standard |
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#32, For the Joy of the PCB |
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#31, Pastures New |
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#30, Detailed Perfection |
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#29, Where Small Is Beautiful |
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#28, Hot Beam 05 from MARTIN |
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#27, Very compact: Hot Plate 04 |
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#26, Increase |
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#25, Partner Meeting 2008 |
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#24, Hotprint Prebumping |
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#23, The Solution for QFN Rework |
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#22, New Rapid-Technology |
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#21, Guide Lines for Exhibitions |
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#20, 25 Years Martin |
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#19, Rework for Achievers |
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#18, Advanced Placement |
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#17, Speed for Lead Free |
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#16, Room For Jumbo PCBs |
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#15, All-In-One Set Reball-03.1 |
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#14, Assisted Parking |
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#13, New Balls for QFN Rework |
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#12, Dream Team for QFNs |
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#11, Positive Quarterly Figures... |
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#10, Innovative Rapid-IR... |
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#09, Auto-Vision-Rework... |
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#08, One for All |
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#07, MARTIN Process Dispenser |
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#06, Lead Free Manual Soldering |
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#05, Lead Free Trainings Sets |
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#04, Asia Loves the AVP |
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#03, Helping Hand for Lead Free |
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#02, Precise Dots on a Slope |
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#01, Ideal Environment |
| | | Articles | | |
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Lead Free Manual Soldering with Bottom Heat |
Press release 2/2005 |
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Lead Free soldering demands temperatures elevated by 30°C also for manual applications. To avoid problems connected with excessive temperatures from above, MARTIN are introducing a new Underheater: Hot-Beam-03. As pioneer and long established expert of IR Underheaters Bernhard Martin has developed the Bot-Beam-03 as an instant quartz heater, with a patent already applied for. The aim is to heat the printed circuit board quickly and within permitted limits to approximately 130°C.
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| Closer scrutiny shows that a common Lead Free melting point of 217°C applies. This requires a solder joint temperature of 230°C. The highest temperatures permitted for the components, however, range between 240 and 260°C. A simple increase of the soldering iron temperature by 30 to 50°C for Lead Free would be risky. |
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| To avoid problems the new Hot-Beam-03 takes over half of the thermal effort from below. The combination of a lower soldering iron temperature and underheating ensures gentler treatment of PCBs and components. |
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| The heating process still remains challenging. The program controlled IR Underheater employs a patent pending self learning process. A precisely defined and constant thermal mass is maintained by a particularly fine sensor control. The in depth knowledge in thermodynamics, as applied to rework, at MARTIN has again proved to be useful. |
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| It is now possible to use a soldering iron with a process friendly temperature to work precisely, without rejects and significantly safer and with fewer risks. Solder tips will also last longer. |
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| The new compact unit offers an active surface of 10 x 13 mm and a power output of 500W. A practical PCB Holder, Smart-Fix-04, is also available - important and thoughtful details for manual soldering for long term and economic Lead Free soldering and rework. |
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