any special reason for this color?
T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 3:42 pm #1 2012-09-12 3:42 pm #1 any special reason for this color? Attachments IMG_7672.JPG 141.1 KB · Views: 96 ••• More options Share Osvaldo de Banfield Member Joined 2011 2012-09-12 3:55 pm #2 2012-09-12 3:55 pm #2 I saw some silver plated in this zone. Philips make sometimes those things. And perhaps somebody used a pen to colored it. ••• More options Share D djQUAN Member Joined 2004 quan-diy.com 2012-09-12 4:51 pm #3 2012-09-12 4:51 pm #3 There are also red ones. Attachments TO92LED.jpg 48.3 KB · Views: 84 TO92-LED-HISTORY.JPG 63.3 KB · Views: 84 ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 5:05 pm #4 2012-09-12 5:05 pm #4 but not 30 years old no data found, only indications saying close relative to 556 ••• More options Share Mooly Administrator Joined 2007 Paid Member 2012-09-12 5:12 pm #5 2012-09-12 5:12 pm #5 Think I've seen green ones in old TV's (Thorn... and very old ) I've got some blue BFxxx's somewhere. ••• More options Share indianajo Member Joined 2010 2012-09-12 7:08 pm #6 2012-09-12 7:08 pm #6 There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. ! ••• More options Share AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Design & Build Parts TO-92 color
Osvaldo de Banfield Member Joined 2011 2012-09-12 3:55 pm #2 2012-09-12 3:55 pm #2 I saw some silver plated in this zone. Philips make sometimes those things. And perhaps somebody used a pen to colored it. ••• More options Share D djQUAN Member Joined 2004 quan-diy.com 2012-09-12 4:51 pm #3 2012-09-12 4:51 pm #3 There are also red ones. Attachments TO92LED.jpg 48.3 KB · Views: 84 TO92-LED-HISTORY.JPG 63.3 KB · Views: 84 ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 5:05 pm #4 2012-09-12 5:05 pm #4 but not 30 years old no data found, only indications saying close relative to 556 ••• More options Share Mooly Administrator Joined 2007 Paid Member 2012-09-12 5:12 pm #5 2012-09-12 5:12 pm #5 Think I've seen green ones in old TV's (Thorn... and very old ) I've got some blue BFxxx's somewhere. ••• More options Share indianajo Member Joined 2010 2012-09-12 7:08 pm #6 2012-09-12 7:08 pm #6 There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. ! ••• More options Share AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Design & Build Parts TO-92 color
I saw some silver plated in this zone. Philips make sometimes those things. And perhaps somebody used a pen to colored it.
D djQUAN Member Joined 2004 quan-diy.com 2012-09-12 4:51 pm #3 2012-09-12 4:51 pm #3 There are also red ones. Attachments TO92LED.jpg 48.3 KB · Views: 84 TO92-LED-HISTORY.JPG 63.3 KB · Views: 84 ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 5:05 pm #4 2012-09-12 5:05 pm #4 but not 30 years old no data found, only indications saying close relative to 556 ••• More options Share Mooly Administrator Joined 2007 Paid Member 2012-09-12 5:12 pm #5 2012-09-12 5:12 pm #5 Think I've seen green ones in old TV's (Thorn... and very old ) I've got some blue BFxxx's somewhere. ••• More options Share indianajo Member Joined 2010 2012-09-12 7:08 pm #6 2012-09-12 7:08 pm #6 There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. ! ••• More options Share AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 5:05 pm #4 2012-09-12 5:05 pm #4 but not 30 years old no data found, only indications saying close relative to 556 ••• More options Share Mooly Administrator Joined 2007 Paid Member 2012-09-12 5:12 pm #5 2012-09-12 5:12 pm #5 Think I've seen green ones in old TV's (Thorn... and very old ) I've got some blue BFxxx's somewhere. ••• More options Share indianajo Member Joined 2010 2012-09-12 7:08 pm #6 2012-09-12 7:08 pm #6 There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. ! ••• More options Share AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
Mooly Administrator Joined 2007 Paid Member 2012-09-12 5:12 pm #5 2012-09-12 5:12 pm #5 Think I've seen green ones in old TV's (Thorn... and very old ) I've got some blue BFxxx's somewhere. ••• More options Share indianajo Member Joined 2010 2012-09-12 7:08 pm #6 2012-09-12 7:08 pm #6 There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. ! ••• More options Share AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
Think I've seen green ones in old TV's (Thorn... and very old ) I've got some blue BFxxx's somewhere.
indianajo Member Joined 2010 2012-09-12 7:08 pm #6 2012-09-12 7:08 pm #6 There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. ! ••• More options Share AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
There is no telling what the marketing department will come up with. GE Semi used to use red for NPN transistors and Green for PNP. Of course, color blind people can't tell those two colors aparts. !
AKN Member Joined 2005 Paid Member 2012-09-12 7:26 pm #7 2012-09-12 7:26 pm #7 Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back). ••• More options Share T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Hi, Yes, Green - PNP Black/Grey - NPN Japan made transistors used to be colored like that (way back).
T tinitus Ex-Moderator R.I.P. Joined 2005 2012-09-12 8:51 pm #8 2012-09-12 8:51 pm #8 ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either ••• More options Share
ok, thanks BC253B, is it any good ? I also have 'M' SPS 5418, with gold plated legs cant identify them either
