Hi, I need to replace some 1N007 Diodes and cannot find anyone that carries them or who manufactured them. Is there a substitute that will work. Thanks
Ron
Ron
They are smaller than a 4007. I have seem them referred to on line in many posts. I don't know if the ohms are different or if I can use 1n4007's in place of them.
Hi Ron... must be honest, I can't recall ever seeing that number.
If they are used in a normal PSU for example then providing the current rating of the 4007is OK I can't see a problem.
If they were in a switchmode PSU then a high speed or fast recovery diode is called for.
If they are used in a normal PSU for example then providing the current rating of the 4007is OK I can't see a problem.
If they were in a switchmode PSU then a high speed or fast recovery diode is called for.
In this tube preamp two are used in series off of a poly cap going to a solid state voltage regulator. They were used in alot of guitar amps. etc. I think they may have been discontinued, just need to know if there is a substitute.
Ron
Ron
I'm sure 1n4007 will be fine (1000v PIV rated) if it's a normal diode.
Can you refer me to circuit using one or post a circuit up... just in case it's something like a zener diode... just with you mentioning a voltage reg.
Can you refer me to circuit using one or post a circuit up... just in case it's something like a zener diode... just with you mentioning a voltage reg.
Every case I have come across online seems to be a typo of the 1N4007 specifically.. In 35yrs of career and tinkering I have never heard of nor encountered a 1N007, no data sheets I can find turn up under this number either.. It would have to be extremely obscure if it exists I guess.
Common silicon small signal diodes: 1N914, 1N4148, 1N4150
Common germanium small signal diodes; 1N34A, 1N60, 1N270, OA71, etc..
Common silicon small signal diodes: 1N914, 1N4148, 1N4150
Common germanium small signal diodes; 1N34A, 1N60, 1N270, OA71, etc..
It appears that "Four Star Electronics and "DERF Electronics Corporation" have them. They both are wholesalers dealing in hard to find discontinued parts. They show that "Vishay" was one of the manufactures.
Very strange that they both quote 2708 pieces as being the quantity available - this leads me to believe that they are accessing the same data base. I have not been able to find a single data sheet anywhere for this part leading me to still believe it may be a common typo. Derf lists both Motorola and Vishay as former sources for this mystery part.
I'm sure if you post the schematic, and the part physical specs we could save you from 'they". any links on the proposed solution?
I think I will be okay using 4007's in place, they are rated at 1000v same as what was shown for the 007. Thanks for the help. It did confuse me.
I was unable to copy the part of the schematic. It is for a Counterpoint SA-3.1 preamp. They have the schematic at www.audio-circuit.dk. It is the second of the schematics shown (you cannot rely on the values listed on the parts list on the first schematic) It is the two diodes going to C8 and C3. I was able to read the part number on the diode.
Hi Ron... running out of time but just had a quick look.
If you mean D90 and D91 then they are just ordinary diodes so the 1N4007's will be perfect. In fact they will only see a few volts as they are effectively across a base emmiter junction together with R90 so even a IN4004 or IN4002 would be fine.
If you mean D90 and D91 then they are just ordinary diodes so the 1N4007's will be perfect. In fact they will only see a few volts as they are effectively across a base emmiter junction together with R90 so even a IN4004 or IN4002 would be fine.
Just a thought Ron... if they have failed then make sure the regulator and zeners are OK. Those diodes are a "crude" form of current limiter by ensuring the B-E volts is limited... more surge protection really.
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