where to find a list of ID codes on recent SMT parts?

[Jamie]

Today at my bench, my boss wanted me to look at a simple inverter
for a panel touch screen LCD monitor. While collecting information I
found that the ID codes on the smt did not match what usually go by.

For example I had a "2A (underscore V) 3D" on a sot23 transistor.
The chart tells me it is a 3906 (pnp) transistor however, I found
that it is actually closer to being a fet transistor.

Then I looked a the power transistors to the primary side of the
inverter transformer, they were NPN types however, the "DK" Id on them
point to a chart indication they are PNP and slightly incorrect package
match.

Does a list exist that better matches these?

Jamie

 

[legg]

Today at my bench, my boss wanted me to look at a simple inverter
for a panel touch screen LCD monitor. While collecting information I
found that the ID codes on the smt did not match what usually go by.

For example I had a "2A (underscore V) 3D" on a sot23 transistor.
The chart tells me it is a 3906 (pnp) transistor however, I found
that it is actually closer to being a fet transistor.

Then I looked a the power transistors to the primary side of the
inverter transformer, they were NPN types however, the "DK" Id on them
point to a chart indication they are PNP and slightly incorrect package
match.

Does a list exist that better matches these?

These lists are all compiled by (different) volunteers, at different
times. I don't know of a current source that attempts to be up to
date.

A rough compilation from bipolar lists:

DK BCX42 INF pnp SOT23 gp audio pnp 125V
DK 2SB798-K NEC pnp SC62 SOT89 Si pnp 2W 25V 1A 110MHzT
DK 2SC4672 ROH npn SC62 SOT89 Si npn 500mW 50V 3A 210MHzT
DK 2SD1628 SAN npn SC62 SOT89 Si npn 500mW 20V 5A 120MHzT
DK (FE) BCV47 SIE npn SOT23 Si darl 350mW 80V 500mA 200MHz
DK BCX42 INF pnp SOT23 gp audio pnp 125V comp BCX41
DK SSM3J09FU TOS ?
DK SSM6P09FU TOS ?
2A 2SC5026 MAT npn SC62 SOT89 VMMMA Si npn 1W 80V 1A 120MHzT
2A 2SD1304 MAT npn SC59 SOT346 LLG Si npn 200mW 17V 100mA -
2*A 2SC5712 TOS npn SC62 SOT89 Si MMMS1W 50V 3A 150>C

RL

Primus server issues again

 

[Fred Abse]

Today at my bench, my boss wanted me to look at a simple inverter
for a panel touch screen LCD monitor. While collecting information I found
that the ID codes on the smt did not match what usually go by.

For example I had a "2A (underscore V) 3D" on a sot23 transistor.
The chart tells me it is a 3906 (pnp) transistor however, I found
that it is actually closer to being a fet transistor.

Then I looked a the power transistors to the primary side of the
inverter transformer, they were NPN types however, the "DK" Id on them
point to a chart indication they are PNP and slightly incorrect package
match.

Does a list exist that better matches these?

There's no exclusivity in SMD marking codes. It's not like JEDEC
registered type numbers. Manufacturers are free to use whatever code suits
them, irrespective to whether another manufacturer uses the same marking on
a dissimilar device.

Tables of markings cannot be relied upon.

 

[Jamie]

There's no exclusivity in SMD marking codes. It's not like JEDEC
registered type numbers. Manufacturers are free to use whatever code suits
them, irrespective to whether another manufacturer uses the same marking on
a dissimilar device.

Tables of markings cannot be relied upon.

That is obvious.

Jamie

 

[legg]

On Thu, 08 Dec 2011 17:29:03 -0500, Jamie

That is obvious.

Jamie

They are just advisory guidelines, based on observation and mfr's
publications.

Sometimes they can be revealing - one two-digit code serving for a
host of multidigit catalog numbers in varying body sizes....almost a
wafer ident, at times.

RL