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'] Quick 1N400? question'
2004\01\26@073125 by

Colin wrote:

> Since 1N4001 through 1N4006 seem to be the same size and price,  is there
> any place where you'd use a 1N4001 where you wouldn't use a 1N4006?

The price where I come from does vary (see below), but in answer to you
question above, no.

1N4001 x 1 = £0.05
1N4006 x 1 = £0.08

Brian.

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Brian,

On Mon, 26 Jan 2004 12:36:22 -0000, Brian Clewer wrote:

{Quote hidden}

Where's that?  Maplin's 1-off price (inc.VAT) is £0.06 for any of 1N4001 to 1N4007 - see (sorry about the long
URL):
http://www.maplin.co.uk/products/module.asp?QV=Y&moduleno=19079&Products=18

Cheers,

Howard Winter
St.Albans, England

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On Mon, 26 Jan 2004 14:34:28 +0000, you wrote:

{Quote hidden}

In Rapid they are :
4001 0.012
4002 0.017
4003 0.02
4004 0.018
4005 0.02
4006 0.02
4007 0.018

these are 100x but at that price why would you buy fewer than 100 at a time?

At 1000x, they are all 0.008

I suspect there may be some performance downside to making a 1KV 4007, otherwise why bother making
the lower voltage parts.

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It depends on the application as the higher current devices will have a
higher capacitance at the junction that may effect some radio frequency
sensitive circuits.

Roy :-)

{Original Message removed}

2004\01\26@135938 by
Its all down to the piv

1N4001  50v
1N4002  100v
1N4003  200v
1N4004  400v
1N4005  600v
1N4006  800v
1N4007  1000v

You wouldn't use a 1N4001 for direct rectification of 240v ac mains in a
switch mode. In that case you'd need a minimum of a 1N4005, and anything
higher.

{Original Message removed}
> From:         Colin Constant[SMTP:colinpiclistHOTMAIL.COM]
> Sent:         Sunday, January 25, 2004 8:10 PM
> To:   PICLISTMITVMA.MIT.EDU
> Subject:      [EE:] Quick 1N400? question

> Since 1N4001 through 1N4006 seem to be the same size and price,  is there
> any place where you'd use a 1N4001 where you wouldn't use a 1N4006?

> I looked at the FAIRCHILD datasheet, and I can't see any difference other
> than PRV.

> Basically, can I just buy the 1N4006 and be done with it?

> Thanks,
> Colim

It is possible that the 1N400? family is manufactured with a single process
and the diodes are then tested and labelled according to their measured
PRV. Since higher PRV makes the diode more useful, it would be assumed
that 1N4007 would sell for more than 1N4001, making the distinction useful
from an economic standpoint. The manufacturers aren't going to discard
the lower rated units, so they sell them marked for lower PRV. For some
market related reason, all members of the family sell for the same price
(roughly), so you would only buy the lower rated devices if your supplier
is out of 1N4007 stock and you didn't need the higher voltage. Think of it
as recycling the poorer performers, but only when necessary.

John Power

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On Mon, 26 Jan 2004 18:47:25 -0000, you wrote:

>Its all down to the piv
>
>1N4001  50v
>1N4002  100v
>1N4003  200v
>1N4004  400v
>1N4005  600v
>1N4006  800v
>1N4007  1000v
>
>You wouldn't use a 1N4001 for direct rectification of 240v ac mains in a
>switch mode. In that case you'd need a minimum of a 1N4005, and anything
>higher.

I think you missed the original question, which was that as they are all pretty much the same price,
why would you ever use anything other than a 4007 ?

{Original Message removed}
The 1N400x series are workhorse power rectifier diodes,
and do not have anything like "flashy" specs. As such, the
argument that you can use the 1N4007 - 1N4001 inter-
changeably is correct.

However, the PIV rating of the diode is determined by
the physical properties of the junctions, and as such there
are side effects. In general a higher PIV diode also has a
slightly higher forward voltage drop & possibly a slightly
lower junction capacitance.  In any application where
either of these considerations is important you would not
be likely to use the 1N400x family in any case.

Roy J. Gromlich

----- Original Message -----
From: "Mike Harrison" <mikeWHITEWING.CO.UK>
To: <PICLISTMITVMA.MIT.EDU>
Sent: Monday, January 26, 2004 2:34 PM
Subject: Re: ] Quick 1N400? question

On Mon, 26 Jan 2004 18:47:25 -0000, you wrote:

{Quote hidden}

I think you missed the original question, which was that as they are all
pretty much the same price,
why would you ever use anything other than a 4007 ?

{Original Message removed}
Cum on I was using 1n 4004 as varicap diodes for transmitters in 1979
they were the cheapest solution 33 mhz osc and a Tripler broadcast band
tx made loads for pirate radio stations in the late 80's they work ok at
audio when coupled to an osc with 3.3pf large area silicon reverse
biased 1N4004 (Varicap) and all for less than a penny BA102's / BB ???
MVAM ??? were pounds and didn't do a better job

Steve....

{Original Message removed}

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