# Help with part identification?

B

#### Bob Pownall

Jan 1, 1970
0
These look like Motorola power transistors, but I'm not having any luck
finding information on them.

The label printed on the case is:
Motorola logo
4-611
MEX
8607

and
Motorola logo
1854-0774
MEX
8539

I'm guessing that the 8607 and 8539 are date codes. Maybe the MEX is
Mexico? (Assembled in Mexico, perhaps?)

The line under the Motorola logo _looks_ like a part number, but I
power semiconductor business became On Semiconductor, right?)

Any ideas / suggestions?

Bob Pownall

M

#### Michael A. Terrell

Jan 1, 1970
0
Bob said:
These look like Motorola power transistors, but I'm not having any luck
finding information on them.

The label printed on the case is:
Motorola logo
4-611 1854-0611 = Hewlett Packard part number

OEM = 2N6055
MEX
8607

and
Motorola logo
1854-0774 = Hewlett Packard part number

OEM = 2N6056
MEX
8539

I'm guessing that the 8607 and 8539 are date codes. Maybe the MEX is
Mexico? (Assembled in Mexico, perhaps?)

The line under the Motorola logo _looks_ like a part number, but I
power semiconductor business became On Semiconductor, right?)

Any ideas / suggestions?

Use the HP semiconductor reference on my website:

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

L

#### legg

Jan 1, 1970
0
These look like Motorola power transistors, but I'm not having any luck
finding information on them.

The label printed on the case is:
Motorola logo
4-611
MEX
8607

and
Motorola logo
1854-0774
MEX
8539

I'm guessing that the 8607 and 8539 are date codes. Maybe the MEX is
Mexico? (Assembled in Mexico, perhaps?)

The line under the Motorola logo _looks_ like a part number, but I
power semiconductor business became On Semiconductor, right?)
You'd have better luck refering to the mfr of the device they are/were
used in. Motorola, TRW, NEC and others produced house-coded devices
for many industrial mfrs of medium and low power medium wave, VHF and
UHF transmitters. Cable companies, mobile, cellular repeater, etc.

Just the application may be enough to tell you basic info, like
operating voltage and typical frequency range. The package shape is
another clue.

~ 46110 was an Acrian 28V hermetic microwave device with 8-32 stud and
5.7mm x 26.5mm crossed-lead foil structure. Possibly an original
device that the house number developed from? (also made close
electrical variants 46112, 45113 etc.

~ 1854 sounds more like a linear hybrid amp module (many pins

Like you, I'm just guessing.

RL

B

#### Bob Pownall

Jan 1, 1970
0
Michael A. Terrell wrote:
<Summary: The answer to my questions - they're Motorola parts, but HP
part numbers.>

You nailed it - they're in an old HP spectrum analyzer I'm trying to
repair. It should have, but didn't occur to me to mention that piece of
relevant information in my original post.

Thanks!

Bob Pownall

M

#### Michael A. Terrell

Jan 1, 1970
0
Bob said:
Michael A. Terrell wrote:
<Summary: The answer to my questions - they're Motorola parts, but HP
part numbers.>

You nailed it - they're in an old HP spectrum analyzer I'm trying to
repair. It should have, but didn't occur to me to mention that piece of
relevant information in my original post.

Thanks!

Bob Pownall

You're lucky that I recognized the sequence.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

F

#### Franc Zabkar

Jan 1, 1970
0
Michael A. Terrell wrote:
<Summary: The answer to my questions - they're Motorola parts, but HP
part numbers.>

You nailed it - they're in an old HP spectrum analyzer I'm trying to
repair. It should have, but didn't occur to me to mention that piece of
relevant information in my original post.

Thanks!

Bob Pownall

FYI, obscure part numbers can sometimes be crossreferenced here:
http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/Search?OpenForm

- Franc Zabkar

L

#### legg

Jan 1, 1970
0
Michael A. Terrell wrote:
<Summary: The answer to my questions - they're Motorola parts, but HP
part numbers.>

You nailed it - they're in an old HP spectrum analyzer I'm trying to
repair. It should have, but didn't occur to me to mention that piece of
relevant information in my original post.
1854-0774 = 2N6056

4-611 isn't an HP house code.

1854-0611 = 2N6055

RL

M

#### Michael A. Terrell

Jan 1, 1970
0
legg said:
1854-0774 = 2N6056

4-611 isn't an HP house code.

Some HP parts have an abbreviated part number printed on the case,
but the parts list contains the full number.

1854-0611 = 2N6055

RL

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

B

#### Bob Pownall

Jan 1, 1970
0
Michael A. Terrell wrote:
You're lucky that I recognized the sequence.

What's that saying? "It's better to be lucky that good..."

Thanks again.

Bob Pownall

M

#### Michael A. Terrell

Jan 1, 1970
0
Bob said:
Michael A. Terrell wrote:

What's that saying? "It's better to be lucky that good..."

Thanks again.

No problem. I hope you get it working.

BTW, if you run across any HP semiconductors that are not listed on
that web page, please let me know so that I can update it. A 400 DPI
B&W 2 color scan of the parts list is preferred so I can use scan to
text conversion, but anything is useful. I would like to add the model
numbers that oddballs were used in.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

B

#### Bob Pownall

Jan 1, 1970
0
Michael A. Terrell wrote:
BTW, if you run across any HP semiconductors that are not listed on
that web page, please let me know so that I can update it. A 400 DPI
B&W 2 color scan of the parts list is preferred so I can use scan to
text conversion, but anything is useful. I would like to add the model
numbers that oddballs were used in.

After you pointed me in the right direction, I discovered this:

http://hparchive.com/Bench_Briefs/HP-Bench-Briefs-1987-07-09.pdf

See pages 3 through 13. Would this be useful? (There might be other
useful stuff on the hparchive.com site. It's basically a hobbist /
collector site, with no affiliation with HP or the Agilent spin-off.)

Bob Pownall

F

#### Franc Zabkar

Jan 1, 1970
0
BTW, if you run across any HP semiconductors that are not listed on
that web page, please let me know so that I can update it.

Some time ago, a group of us at aus.electronics scanned and OCRed a HP
document. This is the result:

http://www.users.on.net/~fzabkar/hp_nums.zip

Be aware that it may contain OCR errors, eg an I (eye) mistaken for a
1 (one), or an O (oh) for a 0 (zero), etc.

- Franc Zabkar

F

#### Franc Zabkar

Jan 1, 1970
0
Michael A. Terrell wrote:

After you pointed me in the right direction, I discovered this:

http://hparchive.com/Bench_Briefs/HP-Bench-Briefs-1987-07-09.pdf

See pages 3 through 13. Would this be useful? (There might be other
useful stuff on the hparchive.com site. It's basically a hobbist /
collector site, with no affiliation with HP or the Agilent spin-off.)

Bob Pownall

Here's another one:

Transistor - Diode Cross Reference - H.P. Part Numbers to JEDEC
http://www.arrl.org/qexfiles/300-hpxref.pdf

- Franc Zabkar