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Groups > sci.electronics.components > #6493 > unrolled thread
| Started by | Jon Schneider <jon@jschneider.tenreversed> |
|---|---|
| First post | 2022-05-15 10:21 +0100 |
| Last post | 2022-05-16 22:36 +0200 |
| Articles | 6 — 4 participants |
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BZX79 vs. BZX55 Jon Schneider <jon@jschneider.tenreversed> - 2022-05-15 10:21 +0100
Re: BZX79 vs. BZX55 Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2022-05-15 18:42 +0200
Re: BZX79 vs. BZX55 John Robertson <spam@flippers.com> - 2022-05-15 13:07 -0700
Re: BZX79 vs. BZX55 Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2022-05-16 00:08 +0200
Re: BZX79 vs. BZX55 legg <legg@nospam.magma.ca> - 2022-05-16 09:36 -0400
Re: BZX79 vs. BZX55 Reinhard Zwirner <reinhard.zwirner@t-online.de> - 2022-05-16 22:36 +0200
| From | Jon Schneider <jon@jschneider.tenreversed> |
|---|---|
| Date | 2022-05-15 10:21 +0100 |
| Subject | BZX79 vs. BZX55 |
| Message-ID | <m235hbb178.fsf@jschneider.tenreversed> |
What is the difference between BZX79 and BZX55 (and other) series Zener diodes ? I've tried comparing datasheets but cannot find both series from the same manufacturer. Thanks, Jon
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| From | Reinhard Zwirner <reinhard.zwirner@t-online.de> |
|---|---|
| Date | 2022-05-15 18:42 +0200 |
| Message-ID | <jecorgFe9aqU1@mid.individual.net> |
| In reply to | #6493 |
Jon Schneider schrieb: > What is the difference between BZX79 and BZX55 (and other) series Zener > diodes ? Wild guess: Just the manufacturer who wants to avoid that customers having tested and thereafter implemented diodes out of his series could switch without problems to same named types fom manufacturer B? Bye Reinhard
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| From | John Robertson <spam@flippers.com> |
|---|---|
| Date | 2022-05-15 13:07 -0700 |
| Message-ID | <H-OdndSAEoHpwBz_nZ2dnUU7-QnNnZ2d@giganews.com> |
| In reply to | #6493 |
On 2022/05/15 2:21 a.m., Jon Schneider wrote:
> What is the difference between BZX79 and BZX55 (and other) series Zener
> diodes ?
>
> I've tried comparing datasheets but cannot find both series from the
> same manufacturer.
>
> Thanks,
>
> Jon
Possibly the case material? Some are glass, others are plastic...
My 1975 Motorola book says the BZX79 series are glass. I don't have a
reference book that covers the BZX55 series though.
John :-#)#
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| From | Reinhard Zwirner <reinhard.zwirner@t-online.de> |
|---|---|
| Date | 2022-05-16 00:08 +0200 |
| Message-ID | <jedbutFhou3U1@mid.individual.net> |
| In reply to | #6495 |
John Robertson schrieb: > On 2022/05/15 2:21 a.m., Jon Schneider wrote: >> What is the difference between BZX79 and BZX55 (and other) series >> Zener >> diodes ? >> >> I've tried comparing datasheets but cannot find both series from the >> same manufacturer. >> >> Thanks, >> >> Jon > > Possibly the case material? Some are glass, others are plastic... > > My 1975 Motorola book says the BZX79 series are glass. I don't have a > reference book that covers the BZX55 series though. TELEFUNKEN electronic 1985 Data Book BZX55 CASE: JEDEC DO35 HTH Reinhard
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| From | legg <legg@nospam.magma.ca> |
|---|---|
| Date | 2022-05-16 09:36 -0400 |
| Message-ID | <6ck48h9g8navcs51s2pa2or9dl67vr6bdu@4ax.com> |
| In reply to | #6493 |
On Sun, 15 May 2022 10:21:47 +0100, Jon Schneider <jon@jschneider.tenreversed> wrote: >What is the difference between BZX79 and BZX55 (and other) series Zener >diodes ? > >I've tried comparing datasheets but cannot find both series from the >same manufacturer. > >Thanks, > >Jon From (1989) Philips: BZX79 are available in tolerances of 5, 3, 2 and 1%. They also have a lower specified leakage current, at low voltage. ( 1/2 to 1/4 of BZX55 ). No practical difference - suspect mfr locations differed. RL
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| From | Reinhard Zwirner <reinhard.zwirner@t-online.de> |
|---|---|
| Date | 2022-05-16 22:36 +0200 |
| Message-ID | <jefqv8F1mgpU1@mid.individual.net> |
| In reply to | #6497 |
legg schrieb: > On Sun, 15 May 2022 10:21:47 +0100, Jon Schneider > <jon@jschneider.tenreversed> wrote: > >> What is the difference between BZX79 and BZX55 (and other) series Zener >> diodes ? >> >> I've tried comparing datasheets but cannot find both series from the >> same manufacturer. >> >> Thanks, >> >> Jon > > From (1989) Philips: > > BZX79 are available in tolerances of 5, 3, 2 and 1%. As are BZX55: - Mit engeren Toleranzen lieferbar (Available with tighter tolerances). > They also have a lower specified leakage current, at low voltage. > ( 1/2 to 1/4 of BZX55 ). I would say it is the other way round - see <https://www.bilder-hochladen.net/files/big/12b4-144-1a15.jpg> > No practical difference - suspect mfr locations differed. Agreed - probably. Bye, Reinhard [not in any way affiliated with one of the manufacturers ;-)]
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