White solder resist Elpemer SD 2491 SG-TSW-R6-B has excellent yellowing resistance after Pb-free reflow soldering and high thermal loads. Has thermal cycling test resistance of 500 cycles between -40 and 125°C. Has a reflectivity of ≈ 90% at 460nm and a yellowing resistance of Db ≈ 1,2. Is for LED applications in automotive electronics.

Lackwerke Peters, www.peters.de