Comparative CRT phosphor data
Phosphor ~ Fluorescence Relative Relative
and Relative photographic burn
WTDS JEDC phosphorescence luminance x writing speed 3 Decay resistance Comments
GJ P1 Yellowish-green 50% 20% Medium Medium Replaced by GH (P3 l) in
WW P4 White 50% 40% Medium-short Medium-high Television displays
GM P7 Blue 5 35 % 75 % Long Medium Long decay, double-layer
BE P11 Blue 15 % 100% Medium-short Medium For photographic
GH P31 Green 100% 50% Medium-short High General purposes,
GR P39 Yellowish-green 27% NA 4 Long Medium Low refresh rate displays
GY P43 Yellowish-green 40% NA 4 Medium Very high High current density
GX P44 Yellowish-green 68% NA 4 Medium High Bistable storage
WB P45 White 32% NA 4 Medium Very high Monochrome TV displays
i Tektronix is adopting the Worldwide Phosphor Type Designation System (WTDS) as a replacement for the older JEDEC 'P' number system reference. The
chart lists the comparable WTDS designations for the most common 'P' numbers.
2 Measured with Tektronix J16 Photometer and J6523 Luminance Probe which incorporates a CIE standard eye filter. Representative of 10 kV aluminized
screens. GH (P31) as reference.
3 BE (P11) as reference with Polaroid 612 or 106 film. Representative of 10kV aluminized screens.
4 Not available.
5 Yellowish-green phosphorescence.
BE (P11) phosphor has a different spectral output from GH (P31) phosphor standard and more closely matches the sensitivity spectrum of silver halide film
types. While photographic writing speed is approximately two times the GH (P31) rate, the visual output luminance is approximately 15% of GH (P31)
phosphor standard, using Polaroid Film Type 107, 3000 ASAw/out film fogging.