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MICROELECTRONICS. 2N/91/ 2N/94/ COMPLEMENTARY SILICON POWER TRANSISTORS. 2N, 2N, 2N AND 2N ARE . Characteristics of the 2N bipolar transistor. Type – p-n-p; Collector-Emitter Voltage: 40 V; Collector-Base Voltage: 40 V; Emitter-Base Voltage: 5 V. Manufacturer Part No: 2N Order Code: Technical Datasheet: 2N Datasheet. Availability: No Longer Manufactured. See all Technical Docs.

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Seems that’s the way it should be. I’ll bet the B in B is an 8 and if so is dataaheet date code. Reason Report to Moderators I think this message isn’t appropriate for our Group.

2N5193 Datasheet PDF

Are you 2h5193 you wish to delete this message from the message archives of TekScopes groups. Biggest challenge is finding enough time to do the diagnostics.

So the problem seems to lie on the power supply board. Subject of the new topic: This cannot be undone. Use a mica washer when mounting on a metal surface. Presume there’s guidance on the site somewhere – will try some more searching.

My datashest are not what they used to be.

(PDF) 2N5193 Datasheet download

The Group moderators are responsible for maintaining their dwtasheet and can address these issues. I have plenty of photos and waveforms from diagnostics so far but I’m not sure how to upload them or link them to this post. As far as I can tell U and Q are behaving as expected but I can find no bad passives on the -5V supply sub-circuit.


The photo titles show the channel allocations to the rails. The new topic will begin with this message. The soldering does not look original.

Hardware shot simply shows the Motorola circled red. I’ve started to compare how the -9V and 2n55193 supplies are behaving as the first appears to be working fine and the second is not and they’re not very dissimilar subcircuits and use the same op-amp. Q’s Tek part number datashedt my ‘s serial number isfor which Sphere lists 2N as a substitute.

At present, I’m just looking for advice on whether this part of the supply is particularly sensitive to the characteristics of Q, details of what the full identifier for the Motorola B might be and where I might find a datasheet, and advice as to whether the 2NG is a suitable replacement and, if not, what to use instead. Hopefully this will help with interpretation of my earlier msg. If you had a spare lying around it would be good to have one available. I’ve been unable to find any datasheet on this item and don’t know whether it’s original or a substitute from an earlier rework.


2N MULTICOMP, 2N Datasheet

I can post some annotated scans of the relevant schematic parts if that would help. In this case the device is connected to a large pad on the Reed Dickinson toggle quoted message. Substituting a 2NG for the B datashfet made any difference. There’s also one expanded timebase shot from the LeCroy showing the U op-amp output into the base of Q and its correspondence with movements on the -5V rail, which starts its downward trajectory but is derailed by the positive shift at Q base and doesn’t recover.

On Datssheet, Oct 8, at One of the LeCroy shots has parameters overlaid showing min and max voltages reached – as does the single Rigol shot taken simultaneously.


Will check my box of scraps. I’ll presume for now the 2N is working OK and move on.

Your email is included with the abuse report. Also can anyone make use of some fast switching diodes and other parts?

Search Only Within This Topic. And closer inspection shows you’re right that it’s not B I hope that will shed some more light.