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Satellite F8T5D

Satellite F8T5D

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This lamp came in my now dead and gone GE 8 watt closet light. It has heavy wear, as you can see, and now has one intact electrode. I'm running it in my Lights of America 7108, and it works great. It's one of the better daylights I've owned; very nice color.

I never planned on showcasing this lamp, but I recently received confirmation of something that I've suspected for a long time - these lamps are in-fact GE made. And something else I didn't know, Chinese GE T5 lamps can be dated, as well as their rebranded counterparts, using a date code on the endcap. That being said, I would appreciate anyone able to date this lamp!

Update: In May of 2013 this lamp catastrophically failed after a couple of weeks of running in the LOA fixture, but when it died, it took the fixture with it!

IMG_3691.JPG IMG_3658.JPG IMG_3574.JPG IMG_3564.JPG

Light Information

Light Information

Manufacturer:General Electric
Model Reference:Satellite F8T5D
Lamp
Lamp Type:F8T5
Electrical
Wattage:8
Optical
Color Temperature:Daylight
Physical/Production
Factory Location:China
Fabrication Date:April 16, 2004
Application/Use:Now dead.

File information

File information

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Filename:IMG_3574.JPG
Album name:themaritimegirl / Fluorescent lamps
Keywords:Lamps
File Size:88 KB
Date added:May 04, 2013
Dimensions:2050 x 522 pixels
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arcblue
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May 04, 2013 at 04:12 PM Author: arcblue
I've had a few of these over the years and I like them. They seem to last long and they do have nice colour.

I'm lampin...

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May 04, 2013 at 05:01 PM Author: Ash
The logo looks familiar - i might have 1 or 2, older ones without the Hg symbol

If i'd to read this date code on a chip or electronic component, i'd assume 4=2004, 16=week 16. If they used the same format for the lamp then it'd hold this as well......
themaritimegirl
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May 04, 2013 at 06:16 PM Author: themaritimegirl
I'd be inclined to agree, as I think that's right around the time I bought the closet light. It's TL8W who seems to be know for sure, so hopefully he'll come along and can confirm that. The one I've seen him date has a different code structure than this one, which is why I'm not 100% sure.

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TL8W
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Lee


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May 23, 2013 at 12:46 PM Author: TL8W
Ahh only just saw this one! It's made at GE's China factory. Code works like this: D4=Apr 2004 - lucky you had this one as up to March they were using the Philips code in reverse (4A, 4B etc). The "16" is the day - i.e. 16th Apr - and the remaining characters are factory and shift ID's. You will only ever need the first four characters on GE/Satellite/Keystone lamps of this type to date them

We do not have to agree on anything to be kind to one another. The ability to be civil is available to everyone on earth, for free.

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Brian TheTellyman
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May 23, 2013 at 12:58 PM Author: BG101
I have one of the 13W cool white versions .. it came in the fitting in the back of my van, which is preheat!! I must get a photo/video of it running


BG

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May 23, 2013 at 01:41 PM Author: themaritimegirl
TL8W: Thanks! So would 2A24 mean January 24, 2002? That's the code on a GE F8T5/WW I have yet to upload.

BG: I'd love to see that fixture! Is it 12V?

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TL8W
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May 23, 2013 at 02:10 PM Author: TL8W
Yes you have it spot on! The very first dated tubes from this factory were in 1998. They followed the Philips system (8F>>June 98 ) all the way to Dec 99(9M). They seem to have forgotten to switch it round in 2000 as they used 0A instead of A0 from Jan 2000 all the way up to Feb 04 (4B). Then suddenly they switched round in March to C4 and have followed the Philips system ever since, even remembering to switch back in Jan 2010. The chart on my avatar shows where the change took place:-)

We do not have to agree on anything to be kind to one another. The ability to be civil is available to everyone on earth, for free.

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May 23, 2013 at 02:19 PM Author: themaritimegirl
Yay! Now, if only I could figure out when GE switched from Japan to China for the T5 range. Oh, so that's what your profile picture is! Do you have a full one in your gallery?

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BG101
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Brian TheTellyman
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May 23, 2013 at 02:52 PM Author: BG101
@TheMaritimeMan: Yes the 13W fitting is 12V it seems to underdrive the tube though. It preheats for 1-2 sec then a relay clicks and the tube ignites. It is probably a PTC as when I switched it off briefly and back on again the preheat time was shorter.

I'll probably put a Sylvania daylight tube in it and preserve the Satellite tube.


BG

Say NO to DICTATORSHIP in the form of bulb/tube/ballast bans !!

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