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Finding 100A TVS diode?

Started bySpare Change <noncompliant@notcompliant.zgq>
First post2017-02-06 12:25 -0800
Last post2017-02-07 21:39 +0100
Articles 3 — 3 participants

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  Finding 100A TVS diode? Spare Change <noncompliant@notcompliant.zgq> - 2017-02-06 12:25 -0800
    Re: Finding 100A TVS diode? Winfield Hill <hill@rowland.harvard.edu> - 2017-02-06 12:47 -0800
    Re: Finding 100A TVS diode? Klaus Bahner <Klaus.Bahner@ieee.org> - 2017-02-07 21:39 +0100

#6070 — Finding 100A TVS diode?

FromSpare Change <noncompliant@notcompliant.zgq>
Date2017-02-06 12:25 -0800
SubjectFinding 100A TVS diode?
Message-ID<0001HW.1E49134E0006266F70000B8733BF@news.eternal-september.org>
BZW6-26, 26v TVS unidirectional diode, through-hole, obsolete, n/a.

The original datasheet says that the 600W peak pulse power is measured over 
10/1000 uS waveform, but the 100A forward surge current is spec’d over 1/2 
cycle of 60 Hz sine:

http://diotec.com/tl_files/diotec/files/pdf/datasheets/bzw065v8

All replacements I see, the surge current is nowhere near 100A or is spec’d 
at 10/1000 uS waveform.

Surely the original isn’t all that unique a part...? Anyone know of a 
direct replacement?

Thanks,
Dave

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#6071

FromWinfield Hill <hill@rowland.harvard.edu>
Date2017-02-06 12:47 -0800
Message-ID<o7ancg02emj@drn.newsguy.com>
In reply to#6070
Spare Change wrote...
>
>BZW6-26, 26v TVS unidirectional diode, through-hole, obsolete, n/a.
>
>The original datasheet says that the 600W peak pulse power is measured over 
>10/1000 uS waveform, but the 100A forward surge current is spec’d over 1/2 
>cycle of 60 Hz sine:
>
>http://diotec.com/tl_files/diotec/files/pdf/datasheets/bzw065v8
>
>All replacements I see, the surge current is nowhere near 100A or is spec’d 
>at 10/1000 uS waveform.
>
>Surely the original isn’t all that unique a part...? Anyone know of a 
>direct replacement?

 Fagor (my TVS favorite) uses the same spec.   So
 does ST.  Try the -28 version for distributor
 inventory.   Fagor's slightly larger 5kp version,
 8.7 x 9 mm, is rated for 500A surge.  There are
 larger ones available. 


-- 
 Thanks,
    - Win

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#6072

FromKlaus Bahner <Klaus.Bahner@ieee.org>
Date2017-02-07 21:39 +0100
Message-ID<o7db6q$187$1@dont-email.me>
In reply to#6070
On 06-02-2017 21:25, Spare Change wrote:
> BZW6-26, 26v TVS unidirectional diode, through-hole, obsolete, n/a.

It's not shown as obsolete by Diotec. They claim distributor stock of 
several thousand in PL, DE and SK.

>
> The original datasheet says that the 600W peak pulse power is measured over
> 10/1000 uS waveform, but the 100A forward surge current is spec’d over 1/2
> cycle of 60 Hz sine:
>
> http://diotec.com/tl_files/diotec/files/pdf/datasheets/bzw065v8
>
> All replacements I see, the surge current is nowhere near 100A or is spec’d
> at 10/1000 uS waveform.

P6KE-30A from ST is a direct replacement, with exactly the same 
specifications.


Klaus

>

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