Other possibles listed by DoD WEBFLIS include MAN10 (Monsanto, probably hard-to-find) and TIL302 (Texas Instruments) - try Lite-on for a cross reference. Mouser carries Lite-on, so their drill-down paramteric search may help too. Your display characters are .300" or .270", not sure, but you could always replace all 5 to ensure a good match with the replacement. Displays are about a dollar-fifty each.
TIL302's are on eBay - buyer beware, of course.
Taylor
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--- In TekScopes@..., HankC <hankc918@...> wrote:
Tnx to the group for the suggestions on my DC504 display.
I swapped one display digit with another & the problem followed the swap.
So, the consensus of the group that it was a display problem was
correct.
The pn of the originals is DATA-LIT10A, which I believe was made by Siemens.
Tek pn is 150-1018-00 but it is not listed in Tek's 1982 Parts Catalog.
I cannot find a source for these so I can't be sure of its configuration (common cathode ?? Pinout, etc)
The chips are soldered into the display PCB. the leads come out the back of the package, along the 2 long edges. The leads are round wires, about 1/8 inch long. Package is about 1/8 inch thick.
Pin spacing is the same as a socket but there is no room to install sockets because the main PCB is right up against the back of the display PCB.
Sockets would make the whole assembly too thick to fit. I had to grease it to get it out :<)
Not all pin positions are populated; One edge has 4 pins, then a gap, then 2 more pins. The other edge is opposite; the pins are grouped 2 pins, gap, 4 pins.
The individual digits butt right up against each other; there is no space between them.
Someone suggested using FND357's as a replacement but there is a lot of variation among parts with this number so there is no telling what I would get.
(leads along the short edges, common anode, decimal point location, socketed, gap in pin spacing, etc).
The display board which holds these chips has a number on it which looks like a truncated Tek pn (3659-01)
If anyone has a parts donor DC504 & is willing to sell the display board, pls let me know.
HankC, Boston
