This manual explains the purpose, specifications, packaging, handling, exposure, development, storage, and shelf life of the Huaguang RP-7 PCB…
The Huaguang RP-7 photolithography film is a high‑quality, polyester‑based film designed for PCB production using helium‑neon or red laser diodes with wavelengths of 630–670 nm. It offers good dimensional stability, moderate sensitivity, strong development adaptability, and excellent line reproduction, suitable for high‑temperature rapid processing.
The document covers product specifications, packaging format, unsealing and safety‑light requirements, exposure guidelines, recommended development chemicals and conditions, drying and storage instructions, shelf‑life information, and the applicable standard (HG/T2172‑2003). This manual is written in Chinese.
| Film thickness | 7 mil (0.175 mm) |
|---|---|
| Compatible laser wavelength | 630–670 nm |
| Standard sheet size | 24×28 mm (50 sheets per pack) |
| Recommended developers | Huaguang HG-2000 and HG-963 |
| Development temperature & time | 30 °C 40–55 s; 32 °C 30–45 s; 35 °C 20–30 s |
| Drying temperature | 40–50 °C (optimal) |
| Storage conditions | Below 20 °C, humidity <65 % |
| Shelf life | 18 months |
The RP-7 film works with helium‑neon lasers and red laser diodes that emit light in the 630–670 nm wavelength range.
Store the film in a dry, cold environment below 20 °C with relative humidity under 65 % to prevent shrinkage and degradation.
Develop at 30 °C for 40–55 seconds, 32 °C for 30–45 seconds, or 35 °C for 20–30 seconds, adjusting as needed for desired density.