Part No R57 and R59 in SOT-223 packages

[Allen]

Dear Group,

I have 2 components with markings as follows:

1. ON R57
P2F

2. ON R59
P1F

The ON was in a circle and I guess it's ON Semi the manufacturer but
what are R57 and R59

I can only find informations on P57 and P59.

Any reply is very much appreciated.

Thanks in advanced.

Allen

 

[legg]

Dear Group,

I have 2 components with markings as follows:

1. ON R57
P2F

2. ON R59
P1F

The ON was in a circle and I guess it's ON Semi the manufacturer but
what are R57 and R59

I can only find informations on P57 and P59.

Any reply is very much appreciated.

Thanks in advanced.

Allen

That's a lot of writing for any part body size. Common codes are
normally used only when the space isn't available. What is the package
shape?

P1F - xxx2222A
P2F - xxx2907A

xxx - vendor and package dependant.

RL

 

[Allen Bong]

That's a lot of writing for any part body size. Common codes are
normally used only when the space isn't available. What is the package
shape?

P1F - xxx2222A
P2F - xxx2907A

xxx - vendor and package dependant.

RL- Hide quoted text -

- Show quoted text -

I think 2222A and 2907A is too big using a SOT223 package. A SOT-23
is more appropriate.

SOT223 is for something like 2N3053 or 2N4037 transistors.

Here is a link to SOT223

http://www.fairchildsemi.com/products/discrete/pdf/sot223_dim.pdf

Thanks

Allen

 

[Franc Zabkar]

I think 2222A and 2907A is too big using a SOT223 package. A SOT-23
is more appropriate.

SOT223 is for something like 2N3053 or 2N4037 transistors.

Here is a link to SOT223

http://www.fairchildsemi.com/products/discrete/pdf/sot223_dim.pdf

Thanks

Allen

PZT2222AT1, SOT-223, marking P1F:
http://www.datasheetcatalog.org/datasheet/on_semiconductor/PZT2222AT1-D.PDF

PZT2907AT1, SOT-223, marking P2F:
http://www.datasheetcatalog.org/datasheet/on_semiconductor/PZT2907AT1-D.PDF

- Franc Zabkar

 

[legg]

I think 2222A and 2907A is too big using a SOT223 package. A SOT-23
is more appropriate.

SOT223 is for something like 2N3053 or 2N4037 transistors.

Here is a link to SOT223

http://www.fairchildsemi.com/products/discrete/pdf/sot223_dim.pdf

The package size determines the total power dissipation for any
characteristic wafer. These were, after all, originally in TO18.
SOT223 would actually be the more prudent package transfer, if all
original ratings were actually intended.

The actual vendor intention in keeping the 2222 or 2907 suffix for
sot23 packages (even though you couldn't even fit anything like it in
or on the new part size) was simply to retain familiarity and market
share for non-critical, small-signal apps.

RL

 

[Allen Bong]

The package size determines the total power dissipation for any
characteristic wafer. These were, after all, originally in TO18.
SOT223 would actually be the more prudent package transfer, if all
original ratings were actually intended.

The actual vendor intention in keeping the 2222 or 2907 suffix for
sot23 packages (even though you couldn't even fit anything like it in
or on the new part size) was simply to retain familiarity and market
share for non-critical, small-signal apps.

RL- Hide quoted text -

- Show quoted text -

Thanks to both of you who replied. Now I have a better idea about the
SMT packages for transistor. I think I'd have no problem replacing
the sot223 with regular transistors as long as I bend the leads
properly.

Thanks and regards

Allen