NEC C4328 LIYS and D1474

[Peter Easthope]

The DeskJet power boards I mentioned on July 2 each has a three pin component which appears to be a transistor. One is a TO-220 case marked NEC C4328 LIYS. The other is a TO-220F case marked with a stylized M and D1474. Neither is mentioned in any of the old data books here and Google failed to find a datasheet. Any ideas about them.

Thanks, ... Peter E.

 

[N_Cook]

Peter Easthope <peasthope@shaw.ca> wrote in message
news:6260d09f-2bcc-4faa-b375-b13e2acddcf1@googlegroups.com...
The DeskJet power boards I mentioned on July 2 each has a three pin
component which appears to be a transistor. One is a TO-220 case marked NEC
C4328 LIYS. The other is a TO-220F case marked with a stylized M and D1474.
Neither is mentioned in any of the old data books here and Google failed to
find a datasheet. Any ideas about them.

Thanks, ... Peter E.


+++++

2S prefixes

 

[Dave Platt]

The DeskJet power boards I mentioned on July 2 each has a three pin
component which appears to be a transistor. One is a TO-220 case marked NEC
C4328 LIYS. The other is a TO-220F case marked with a stylized M and D1474.
Neither is mentioned in any of the old data books here and Google failed to
find a datasheet. Any ideas about them.

They are probably 2SC4328 and 2SD1474 - it is common convention for
Japanese transistors to omit the "2S" prefix.

2SC4328 - NPN, 5 amp, 30 watt, 100 or 150 volts (substitution list is
ambiguous), 120 MHz, low saturation voltage (under .5 volts).

2SD1474 - NPN, 6 amps, 40 watts, 60 volts, high hFE (min 300, max
2000), 30 MHz.


--
Dave Platt <dplatt@radagast.org> AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

 

[Peter Easthope]

On Thursday, August 2, 2012 10:41:22 AM UTC-7, Dave Platt wrote:

They are probably 2SC4328 and 2SD1474 - it is common convention for
Japanese transistors to omit the "2S" prefix.

Thanks. That will help. The DeskJets are due for attention again,
... Peter E.