I'm seeking some out-of-production through-hole component LED light bars for a project. There are two different styles that I need and can not substitute. Depending on where I look, they were reportedly discontinued in either the late 1970s or early 1990s.
The first type have 2 LED emitters (or chips, or dice) per unit. Their front face measures approximately 14 mm x 7 mm (9/16 x 1/4 inch) and they're about 12 mm (1/2 inch) tall excluding leads. They're made of lightly-tinted clear epoxy, with a diffusion layer about 1-2 mm (1/16 inch) thick at the front. The dice are about 7 mm (1/4 inch) apart, center-to-center. These were once sold in retail packaging as Cal-Pak brand, distributed by Cal West Supply, Inc. as their part numbers CP-59 (green), CP-58 (red) and CP-60 (yellow). These were also sold online by defunct website http://www.hallbar.com/ . I do not know the company which actually made them, though I have read one report that it was in Japan.
The second type is of similar general appearance and construction, but they have 3 emitters per unit. Their front face measures about 18 mm x 5 mm (11/16 inch x 3/16 inch) and they're about 9 mm (3/8 inch) tall excluding leads. The chips are about 5 mm (3/16 inch) apart, center-to-center. There are similar LEDs to these in current production, but not exactly alike -- the chip spacing is 6 mm now. These were also sold in Cal-Pak packaging, at least in green (CP-57) and red (CP-56) colors, but apparently not in yellow.
Photos attached show the 2-chip style (slightly photoshopped image of actual LEDs in all 3 colors), the 3-chip style (the green one is real and the others are simulated), and the Cal-Pak blister card packaging (simulated -- I don't know how many actually came in a package; it would most likely have been in the range of 1 to 4).
The first type have 2 LED emitters (or chips, or dice) per unit. Their front face measures approximately 14 mm x 7 mm (9/16 x 1/4 inch) and they're about 12 mm (1/2 inch) tall excluding leads. They're made of lightly-tinted clear epoxy, with a diffusion layer about 1-2 mm (1/16 inch) thick at the front. The dice are about 7 mm (1/4 inch) apart, center-to-center. These were once sold in retail packaging as Cal-Pak brand, distributed by Cal West Supply, Inc. as their part numbers CP-59 (green), CP-58 (red) and CP-60 (yellow). These were also sold online by defunct website http://www.hallbar.com/ . I do not know the company which actually made them, though I have read one report that it was in Japan.
The second type is of similar general appearance and construction, but they have 3 emitters per unit. Their front face measures about 18 mm x 5 mm (11/16 inch x 3/16 inch) and they're about 9 mm (3/8 inch) tall excluding leads. The chips are about 5 mm (3/16 inch) apart, center-to-center. There are similar LEDs to these in current production, but not exactly alike -- the chip spacing is 6 mm now. These were also sold in Cal-Pak packaging, at least in green (CP-57) and red (CP-56) colors, but apparently not in yellow.
Photos attached show the 2-chip style (slightly photoshopped image of actual LEDs in all 3 colors), the 3-chip style (the green one is real and the others are simulated), and the Cal-Pak blister card packaging (simulated -- I don't know how many actually came in a package; it would most likely have been in the range of 1 to 4).
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