These high-quality, photo-positive PCBs can hold their own with products from other well-known manufacturers. - Photo PCBs with new environmentally friendly photo-positive coating (no chlorocarbons) - Completely uniform application of the photo coating - Colour photoresist - Very fine resolution - With opaque protective film - Film firmly adheres right up to the edges - High-quality base material - Precise dimensional accuracy - Uniformly high quality from batch to batch Exposure times: 30-W UV tubes: 60 - 90 s 1000-W halogen bulbs: 45 - 70 s 250-W photo lamps: 12 - 15 min. 500-W photo lamps: 6 - 7 min. At a distance of approx. 30 cm and max. format of 150x200. Development times: at 25 - 30°C: in 25 - 90 s, depending on the freshness of the bath. Etching times: in a freshly made ammonium persulfate bath at a temperature of 40 - 50°C: 5 - 10 minutes. For more information on exposure and etching times, please refer to our main catalogue https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2017-08-06 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2017-08-23 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2017-10-19 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2018-01-26 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2018-12-16 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2019-04-02 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2019-06-21 https://elecena.pl/product/9708551/510-9-photo-pcb-epoxy-single-sided-500x500-mm-1-5-mm-35 2021-05-05