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    Early 1970's Fairchild Transistor Question

    I obtained 3 different Fairchild Transistors with date codes of 1970 & 1971. EN914, EN722, & EN1132 Does anyone know the significance of the prefix 'EN' on these transistors. I'm wondering if they're just early markings that later transferred over to the JEDEC '2N' prefix, or if they are some...
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    Any Information About Weller TWS101 Heater/Sensor?

    I've been using the Weller WS101 heater/sensor assy, but have run across some Weller TWS101 heater sensors. The package says they're both used on the same Irons, but I can't find any info on the TWS101, and the Weller website is proving difficult for me to navigate. Maybe Harald Kapp can figure...
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    Where to find data about LED 155BRP made by AND?

    Going through my parts and found a bag of 150 T1 3/4 Clear Lens LEDs. The bag is marked: AND Part #155BRP 770 Airport Blvd. Burlingame, CA 94010 (415) 347-9916 When I couldn't find anything about this manufacturer, I checked the address: It's some mega-church now. Has anybody ever heard of...
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    Can Anybody Identify This Manufacturer Logo?

    This Logo is on a high-end DAC made in 1982. Does anybody recognize what company this is? Thanks
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    Hewlett Packard Envy 5661 eAll-in-One Printer Dissassembly

    HP won't help with this cheap printer. Friend wrapped a sticky label around the paper-feed path that is not accessible. Was hoping for an exploded diagram, or somebody who's taken one of these apart before, to tell me how to access the insides so I can peel that sticker off the underside of the...
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    Rehashing Info About Surface Mount Resistor Size

    I mentioned this in a hijacking of somebody's surface mount post a few months ago, and saw several replies, so thought it might be of interest here. I mentioned that years ago I had been buying specific surface mount resistors, and suddenly started receiving smaller-sized surface mount packages...
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    Tin Foil Hats -Phase 2

    Assembly Magazine Jan 2018: Three Square Market in Wisconsin (U.S.) now offers implantable RFID tags for people, about the size of a grain of rice, injected between thumb and index finger for $300. CEO of Three Square Market emphasizes that it is not designed to track people. Hmmm. I wonder...
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    ID Obsolete Motorola Communications Capacitors?

    I bought a big bag of Motorola Communications capacitors over the weekend, erroneously thinking I'd be able to Google the part number. No luck doing that. Does anybody know where I can get the capacitance and working voltage values of Motorola capacitor part # 48C83159B01? Axial leaded...
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    Happy Holidays!

    Like a lot of us, I'm getting ready to travel and make merry in this holiday season. Merry Christmas, Happy New Year, and whatever other holiday you and yours may celebrate this time of year. Good luck with travel plans and stay safe. Best wishes for everyone and your families this holiday...
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    Obsolete Hewlett Packard Transistor

    I've got a blown HP 1853-0233 (proprietary) transistor in an HP 3437A. It's obsolete. Some guy told me he thinks a TIP42 is supposed to be the equivalent. With no 1853-0233 data sheet available, I consider that a crap shoot. Anybody know anything about a definitive 1853-0233 equivalent that's...
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    In Memoriam

    I just wanted to say that there aren't too many times I log onto this site that I don't think about our loss of KrisBlueNZ. I've seen plenty of posts from new members who say they were directed to Electronics Point because of Google searches. If Ian doesn't know it, his site here is THE go-to...
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    Anybody know what 'XMS' prefix designates for metal dowel pins?

    I have a large number of metal dowell pins. Mostly designated XMS16555-xx and XMS9105-xx. Has anybody seen this designation used before? I want to know what grade of steel or alloy these dowel pins are made of, and Google isn't helping. Thanks Follow-on update: The 16555 designation is for a...
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    International Rectifier B5CNQ015 (House Number?)

    I'm looking at an International Rectifier part clearly labelled: B5CNQ015. It's not on the IR Homepage website. I assume that means this is someboy's proprietary part number. Does anybody know what this device is?
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    Taking some time off

    I'm going to be away from the internt for a few weeks while I do some travelling before/during the up-coming holidays. I suppose I won't be missed, but wanted to let anyone know, who might wonder why I'm not here, for a while. Happy holidays to everyone. I'll be out of here Friday, 12DEC, until...
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    Electronics Point / Google

    Ian answered somebody's question about a year ago, about how Electronics Point threads turn up on Google Searches. He said Google trolls the site and takes what it wants. I just wanted to say, if some others here haven't noticed, that Electronics Point question threads turn-up in a lot of the...
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    Old folks in-home personal alarm system?

    My parents are getting up there in years. My mom fell in her bathroom on one side of the house at 3 am and couldn't get up. My dad couldn't hear her calling for help until he woke up himself at 5am on the other side of the house. I'm seaching for a (I think) simple wireless 'alarm'. Something...
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    Composition of 1970's TRW Series HEW Capacitors?

    Repairing an old HP Recorder, chalk full of 1970's era TRW HEW Series capacitors. Some are in motor control circuits, some in signal processing circuits. With all the modern-day equivalents out there, I'd like to replace them with whatever is most closely related. Voltages range from 50VDC to...
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    Before you ask thread...

    I'll just resubmit my old request. I'd like to see a semiconductor cross-reference section. I sent *steve* a Hewlett Packard and Tektronix cross ref last time, but don't think it made it to the website. Both of them can be found openly on the web, but you have to hunt for them. If we got...
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    ID Axial Resistor Manufacturer?

    Got a couple bags of resistors, and don't know who made them. Does anybody know what company uses the following code to identify their parts? RC1R7401PR2W (1.74K Ohm) RC4R75K01PR2W (4.75K Ohm) Thanks
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    International Rectifier 5E6 BU ?

    Anybody know a cross for this 1960's era International Rectifer Diode 5E6 BU ?
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