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NCP1203P60 Datasheet

By Jestine Yong on March 30, 2012

Could NCP1203P60 datasheet different from 1203p60 datasheet pdf ? The reason I ask this question was because a Benq 19” LCD Monitor came in for repair have an unstable output power problem. With the mainboard connected the output voltages went up and down but when the mainboard was disconnected it worked perfectly good. I have found the problem and it was the power/inverter board. This board is using the 1203p60 power IC without the NCP words in front.

Since I have three new NCP1203P60 IC, after fixing the IC there was no power at all. I installed an IC socket to test on the other new ICs and the result was the same –totally no power. The reason I install the IC socket so that the circuit track will not break from excessive soldering and desoldering of the ICs being tested. When I put back the original IC, the power came back! I was floored by this test result. It is either both the ICs are not compatible or the ICs that I bought have problem. But then again, if you tell me that one if one IC have problem then it is acceptable, in this case 3 new ICs would not function!

If you search the NCP1203P60 datasheet or the application notes and 1203p60 datasheet from the internet you will get the same datasheet from ON semiconductor. Have you ever came across that the NCP1203P60 cross reference is different from 1203p60 IC? If yes please do let me know-thanks. By the way, yesterday I went online to buy 1203p60 IC and I did not buy NCP1203P60 because I want to test it out first. Once I got this IC I will test it out and let you know the outcome. Expected IC arrival will be next week.

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ncp1203p60 cross reference ncp1203p60 datasheet

15 Comments

beh

March 31, 2012 at 5:04 am

HI MR YONG
yes the system give same data for both NCP1203P60 & 1203P60?
beh

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Galib

March 31, 2012 at 12:48 pm

Unbeliveable .... !!! I think your 3 ICs are bad otherwise it must work !! Lucky Guy ... !! Have a nice day ..... !!!

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- Jestine Yong
  
  March 31, 2012 at 11:16 pm
  
  HI Galib,
  
  I will find out when I got the new batch of IC. By right the NCP1203P60 and the 1203P60 should be the same. By the way you have a very cool photo!
  
  Jestine
  
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beh

March 31, 2012 at 1:51 pm

HI JESTINE

is there any way to test all those three ic somewhere out side the circuit
and/or inside circuite of another healthy set ? to be sure that all those three are really ok?or not?
beh

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- Jestine Yong
  
  March 31, 2012 at 11:18 pm
  
  HI Beh,
  
  The best way to test it is when I got the new batch of IC.
  
  Jestine
  
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beh

April 1, 2012 at 2:41 am

HI MR YONG

ok i will wait here to have the result of this test.
regards
beh

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Alfred Morrison

April 10, 2012 at 1:03 pm

Hi if the datasheet state the same information then it could mean that you bought an immitated part i will sugest you buy from a different shop. have a blessed easter

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- Jestine Yong
  
  April 10, 2012 at 9:37 pm
  
  HI Alfred,
  
  Yes the only way to find out is to buy from another supplier and retest.
  
  Jestine
  
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Bradley Brake

September 28, 2012 at 4:19 pm

There have been problems with some suppliers here on different components, like capacitors that are leaky, solid state semiconductors defective.
Another supplier woud be a very good idea.

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- Jestine Yong
  
  September 28, 2012 at 8:27 pm
  
  Hi Bradley,
  
  That is why sometime I do check on the new components first before installation.
  
  Jestine
  
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Dimon

October 2, 2012 at 10:33 am

And the same monitor (benq) and power board. With "new" IC`s R603 was in smoke. I installed 1203P60 in SMD-case, marked as "203D6" and monitor started to work as expected. This new IC`s is defect or relabeled!

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- marina
  
  April 29, 2014 at 8:18 am
  
  Hi Mr. Yong! I had the same problem like Dimon. It happened when I replaced an 1203P60 for an NCP1203P60. I beging to believe that both IC's are not really similar.
  Marina
  
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  - Jestine Yong
    
    April 29, 2014 at 11:44 am
    
    Hi Marina,
    
    Yes you right.
    
    jestine
    
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jayesh

September 2, 2015 at 10:40 am

Dear sir,
I got a power supply usig ic 1203p60 in this resistor burned( pin no 8) ie filter to ic pin no 8 pls suggest me the resistor value, what will be the cause
it is a benq lcd monitor model w1508

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- Jestine Yong
  
  September 3, 2015 at 9:23 pm
  
  HI Jayesh,
  
  I do not have this monitor with me thus I would not know what will be the value. I suggest that you look for the schematic from the internet. From ic datasheet it seems that the value is more than 4.7 k Ohm
  
  Jestine
  
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