Identifying a SMD transistor

Thread Starter

R!f@@

Joined Apr 2, 2009
9,801
I am having trouble trying to figure out this transistor. The silk screen number says Q703. So I figured it is transistor by looking at other components..
Can any one identify the exact number of the part
103.jpg
The number is 130 .E.
This is working from a working PCB.
I need to replace a blown one from another PCB
 

Thread Starter

R!f@@

Joined Apr 2, 2009
9,801
Ah ! That is an issue.
I picture was taken while the unit is running. I cannot shut it down and it is not easily reachable.
It's on a balcony edge.
 

BobaMosfet

Joined Jul 1, 2009
1,996
Are you sure it's an 'E'.... kinda looks like a 'w' --- This could be a transistor or a more complicated circuit in this package. Marking could be private-label.... very, very hard to tell. I'm looking through my SMD marking books to see if I can identify it.... do you know what year or decade this device is.. what is it (that would help a lot)?
 

BobaMosfet

Joined Jul 1, 2009
1,996
Here's its actual part #: BL8509-130ECRM

It's a voltage detector with a delay by Shanghai Belling. I hope this next part formats ok:

BL 8509 130 E C RM
-- ---- --- - - --
| | | | | |
| | | | | +- Package Type: SOT-23-3
| | | | +----- CMOS
| | | +--------- 250mS
| | +--------------- 1.30V (Detector Voltage)
| +---------------------- Part Number
+--------------------------- Mfg Code


May have been made as custom part for contract, as opposed to generally produced.
 

Thread Starter

R!f@@

Joined Apr 2, 2009
9,801
It's a Gree Inverter AC's Outdoor PCB.
The circuit area is for the out fan driver. Some how insulation of two wires of Motor melted and shorted, blowing a resistor and a cap with that chip.

Are you sure it is that part. I can't seem to find that data on Google.
Do you have any data ?
 

Thread Starter

R!f@@

Joined Apr 2, 2009
9,801
Aah ! I found the data by searching this part "BL8509"

Cannot see the SMD marking code.
I am confused here.
 
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