Re: Component Cross-Reference
Dynamic Voice and Data has this chip for $30 +. I am trying to find an alternative part# that I can use and hopefully find it cheaper. I have the firmware that I can flash onto the chip.
bigbrew25
Member
Last Activity: 07-24-2020, 11:12 AM
Joined: 10-08-2015
Location: Jonesboro, Ar
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Component Cross-Reference
I am having trouble finding a replacement for this micro-controller that goes on a Nortel M5316 phone. I usually get my parts from Digi-Key or Mouser, but am not having any luck with this part#. I have another phone of the same model that has the same chip, but a different brand (Nuvoton) Any help would be appreciated.... -
Name this Zener
Hey Guys,
I am having a little trouble identifying this Zener diode on an NEC DTL 12D telephone main board. Any help would be greatly appreciated.[ATTACH]155828[/ATTACH]
Dimensions are 1.25mm x 1.70mmHey Guys,
I am having a little trouble identifying this Zener diode on an NEC DTL 12D telephone main board. Any help would be greatly appreciated.[ATTACH]155828[/ATTACH]
Dimensions are 1.25mm x 1.70mm...Last edited by bigbrew25; 04-25-2017, 08:30 AM. -
Re: Need help identifying a component
Thanks guys! I thought it was fuse, but couldn't find anything to verify it. "Resettable" is the key. Found them at Mouser.
[url]http://www.mouser.com/ProductDetail/Littelfuse/0603L050SLYR/?qs=%2fha2pyFaduhvOeRBEvD08NqDHuXHpnulAFLJwKctUFnnk%252bCGq7NK9w%3d%3d[/url]Re: Need help identifying a componen.../Littelfuse/06Leave a comment:
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Need help identifying a component
Hey Guys,
Wondering if anybody knows what the marking "SI" stands for on a pcb.
In the photo, it is the component with the K on it. This is a daughterboard that is in an Edgewater Networks 2402 POE LF switch.... -
Re: Need help identifying a diode
Thank you everyone!!!! The Mouser link that i posted was the correct diode. You guys are awesome!Leave a comment:
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Re: Need help identifying a diode
Thanks guys!! I am putting in a request to get a bigger variable power supply to test this diode. If it is 30v, do you think this one will work?
[url]http://www.mouser.com/ProductDetail/NXP-Semiconductors/BZX79-B30133/?qs=sGAEpiMZZMutXGli8Ay4kDE4J8KCiPsFYm0iUvVaVA0%3d[/url]Re: Need help identifying a diode<br...XP-SemiconductLeave a comment:
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Re: Need help identifying a diode
budm, I did check the transistor on one of the bad cards and it read fine. On most of these cards, R19 does get dark, but usually reads fine. I told you wrong about the diode. On most of these bad cards, the diode is OPEN, not shorted. I just had one of them that was shorted. Don't know if this changes your theory or not. I have not done a zener test on it, but i did ohm the good one. It read OPEN one way and 4.5 M the other. Do you have any plans on how to make a tester?Leave a comment:
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Re: Need help identifying a diode
Is there a certain zener diode part # that you suggest, budm?Leave a comment:
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Re: Need help identifying a diode
C2: 22uf 25v
c15: 10uf 63v
c14: 100uf 35v
c6: 47uf 63v
c5: 47uf 63v
c3: 10uf 63vLeave a comment:
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Re: Need help identifying a diode
Do you need the values of these caps as well?...Leave a comment:
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Re: Need help identifying a diode
Here are some better pic budm. R20 usually goes bad with this problem, the resistor closest to L4. I will check the transistor on one of our bad ones....Leave a comment:
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Re: Need help identifying a diode
Here you go. The transistor that the Cathode connects to is a A988....Leave a comment:
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Re: Need help identifying a diode
budm, that was the reading on a "known good" one. The defective ones are shorted (out of circuit).Leave a comment:
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Re: Need help identifying a diode
Any help would be greatly appreciated. The daughterboard description is :
PZ-PW36-G.
I have no schematic. The symbol on the board is a standard diode symbol.Leave a comment:
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Need help identifying a diode
Hey Guys. I have about 10 NEC PA-16LCBJ cards that are dead. The source of the problem is a resistor and a diode on the power daughterboard. I have found the resistor no problem but am having a hard time finding the diode. The following readings is the same diode off of a good card:
It is a Glass diode (hole through) with the markings "301." along the anode side.
It has a forward biased voltage drop of .677.
The body dimensions is 1.85mm W x 2.15 mm L (Anything close could work of course). Here is a pic... -
Re: New Members - please post your introductions here
Hello Folks. Been repairing Telecom equipment for 16 years. I found this site searching for repair solutions for a Dynex T.V.Leave a comment:
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