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Your cart is empty. 12pcs of 3.3V 950mA LD33V LD1117V33 Linear Voltage Regulators. Part number LD1117V33.
California Prop 65 Warning WARNING: Can contain chemicals that expose you to Cancer and/or Reproductive Harm www.P65Warnings.ca.gov
Gecryan
2025-08-10 09:17:17
Used these regulators to “fix†the China made ATi Rage PCI video cards reusing chips from server e-waste (that operate on 3.3 volt PCI slots only) for vintage computer use that only have 5 volt PCI slots, card had a convenient hole in it so I used a long bolt, washer, and nut as a heat sink, used shrink tube to protect the bolt, runs stone cold.
Maat
2025-07-20 17:37:28
I used a heat sink also purchased on Amazon to dissipate heat from these stepping down 12-14 volts down to 3.3V. If you are tired of replacing AA/AAA or even CR2032 batteries, you can use the steady power from this instead. Does it obliterate the warranty? Yes. Is it worth it to not need to replace batteries? Yes. Since they might get hot, consider where you are putting them as to not burn yo skin. Not sure if they get that hot, but it is a consideration.
Customer
2025-07-17 20:45:13
Function as specified
Mr. P
2025-06-18 18:14:42
I was able to use these with a DC 5V supply, USB power bank, to run some colored LED lights for a Christmas Window display.
Fisher Man
2025-05-05 15:16:46
Work great, need a heat sink if major diffence between input voltage and 3.3V output
Max
2025-01-03 18:41:32
Hook it up and those pesky extra volts just disappear! Also has convenient warming technology that increases the temperature relative to the amount of extra power it's disappearing.You'll want to add the recommended capacitors if you care about voltage stability though.
dr046048
2024-12-09 14:03:00
Does the job. Using to drive high power LED at 3.3 v and 400 mA from a 5 v input. The chip gives a steady 3.3 v output. It gets a little warm but not blistering hot. I have attached a small 1 cm square heat sink using conductive tape. It's now barely warm to the touch. It's much cheaper than a step-down switching regulator and seems to work just as well.
Jim Buchanan
2024-11-25 16:23:40
Not much to say I'm putting 5V in and getting 3.3V out. Perfect.
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