Component Identification

B

bjrtech44

New Member
Hi All,
I am repairing a circuit board. I have gone thru most of it and replaced several components like diodes and capacitors to update it but now I am stumped. I have a component that looks like a diode but the symbol on it looks like it might be a transistor. I have never seen a symbol like this. It's the last thing I need to replace to get my board active again. It steps down or regulates 120v. Any help would be greatly appreciated.
Thanks
 

Attachments

  • 20241022_145749.jpg
    472 KB · Views: 57
  • 20241022_151407.jpg
    100.3 KB · Views: 58
  • 20241022_151945.jpg
    95.3 KB · Views: 53
  • 20241022_151130.jpg
    10.7 KB · Views: 53
  • 20241022_151023.jpg
    125.7 KB · Views: 53
Sort by date Sort by votes
I really didn't think about it being a fuse or fuseable link. The symbol is really throwing me off. It is a new symbol to me. I might try a fuse and see if it comes alive.
Thanks
 
Upvote 0 Downvote
bjrtech44 said:
I really didn't think about it being a fuse or fuseable link. The symbol is really throwing me off. It is a new symbol to me. I might try a fuse and see if it comes alive.
Thanks
Click to expand...

The 'symbol' isn't any such thing, it's just a manufacturers logo - but it's clearly marked 160mA, so it couldn't be much else than a fuse.

However, I've never seen a fuse like it - and while I've seen LOT'S of different types, there's always something obscure comes along that you've never seen before.

What actually is the circuit board?.
 
Upvote 0 Downvote
hi..
The component you’re looking at is likely a PolySwitch resettable fuse or PTC (Positive Temperature Coefficient) thermistor fuse. These components protect circuits by limiting current when a threshold is exceeded, allowing the fuse to “reset” once the fault is cleared, unlike traditional fuses that need replacing.
 
Upvote 0 Downvote
some key points...
  1. Symbol and Labeling: The unique symbol and “160mA” label indicate that this component has a current-limiting role. A PTC thermistor would match this, as it would regulate or “trip” at this current level.
  2. Use in Circuit: This fuse would be crucial in circuits that step down or regulate higher voltages like 120V AC, protecting downstream components from overcurrent situations.
  3. Replacement: Make sure to replace it with a fuse of the same rating (160mA) to ensure proper circuit protection. You can find similar components with identical current ratings at electronics suppliers.
 
Upvote 0 Downvote
You must log in or register to reply here.

Similar threads

G
  • Question
Smd identification
Replies
2
Views
2K
Gav-B
G
P
  • Question
SMD component identification
Replies
12
Views
5K
peepermeeper
P
J
  • Question
SMD component identification
Replies
10
Views
2K
jahan112
J
C
  • Question
Help identifying component
2
Replies
21
Views
2K
Les Jones
L
D
LED driver identification
Replies
5
Views
4K
Diver300
D
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…