How to Handle our Lamps

Some notes for proper handling of CCFLs and EFLS:

AchtungOur how-to information is addressed to skilled and approved personnel, only. The exchange of CCFLs, EFLs and inverters requires certain technical know-how. Without the required skills and approval the CCFLs, EFLs and inverters or even the whole application or device may get damaged. If you do not have either the skills or/and the approval we recommend to contact a service center.

  1. CCFLs and EFLs are made of special and thin glass.
    AchtungIf broken once, deal with caution that your fingers may not be hurt.
  2. Shock of any kind should not be applicated to the lamps tube. Otherwise this may result in damage and electrode deformation.
  3. CCFL: Unnecessary heating of the lamps tube should be avoided, especially pointlike or partially, for it is easily broken.
  4. CCFL: If the lamp is stressed at their sealing ends, though invisible from outside, it may produce slow leakage. This destroys the vacuum state inside and makes the lamp useless.
    • a. do not impose pressure of any kind beyond 1 kg on wire ends directly.
    • b. do not twist the wire ends in radial direction.
    • c. do not wind the wire ends at the joint ends. If necessary, please fix the wire before winding it at a position 10 mm or more from the ends.
  5. Achtung Soldering conditions:
    • - Soldering temperature: about 250 - 300°C
    • - soldering time: 4 seconds or less
    • - soldering position: min. 1 mm away from the position where the electrode comes out of the tube
    • - soldering agent: acidless
  6. Lamps of standard type shouldn‘t be exposed to temperatures below 0 °C, constantly. Low temperature shortens the average lifetime and decreases brightness. If low temperature situations can‘t be avoided make sure to heat the area of the CCFL-lamp before starting to at least 15°C or use lamp types designed for usage below 0°C.
  7. The inverters start-up voltage should be 2-3 times higher than working voltage.
  8. The lamps are driven by sinusoidal AC waves between 20 to 100KHz. Application of other waveforms(triangular, square) may lead to a considerable reduction of lifetime.
  9. Our CCFLs are specified for 5mA to max. 6mA current. A current above 5mA decreases lifetime.
  10. Other light sources are needed to assist starting the lamp in dark places(e.g. caves) due to a need of free electrons to activate the lamp.
  11. Keep the lamp away from combustibles and explosive material due to the high voltage the lamp is driven by.
  12. The high AC voltage requires good insulation of the electrodes area, e.g. by silicon cables and silicon caps.
  13. CCFL: The denomination -Cold Cathode Fluorescent Lamp- doesn`t mean that this lamp gives of cold light, only, or that this type of lamp stays cold, while on. It really means that the ignition of the gas inside the lamp happens cold and unheated(compared to HFL = Hot Fluorescent Lamps) . In the area of the electrodes a CCFL can get hot. A thermal insulation in certain applications(wood, plastics) may be required.
  14. Do not watch into the bare shining lamp directly for a long time as the lamps high brightness is harmful for your eyes once it shines.
  15. UV-B and UV-C: These types should not be driven without a proper visual shielding. The unshielded and concentrated UV radiation may harm skin, eyes and sensitive materials after even a short time of usage.
  16. CCFLs and EFLs belong to the exemption list of the RoHS regulation although they contain small quantities of mercury. This gets quite understandable, if one knows that CCFLs and EFLs can`t work without these minute portions of mercury inside the tube. Means our CCFLs and EFLs comform with RoHS.
  17. CCFLs and EFLs contain small quantities of mercury inside.
    AchtungPlease deal with caution when removing an exhausted lamp. Please give it back to a local dealer of CCFL-lamps or give it back during special poison collections once or two times a year (common in Germany, Austria and Switzerland).
© 1.2007 backlight4you