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(12-Pcs) STMicroelectronics 3.3V, LD1117V33 Voltage Regulator, LD33V

4.6 out of 5 stars 142 ratings
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Product details

  • Package Dimensions ‏ : ‎ 5.83 x 2.13 x 0.35 inches; 0.63 ounces
  • Item model number ‏ : ‎ LD1117V33
  • Date First Available ‏ : ‎ November 6, 2016
  • Manufacturer ‏ : ‎ STMicroelectronics
  • ASIN ‏ : ‎ B01N09X4E8
  • Customer Reviews:
    4.6 out of 5 stars 142 ratings

Product Description

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

Customer reviews

4.6 out of 5 stars
142 global ratings

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Customers say

Customers find the voltage regulator works well and is of good quality. They appreciate its temperature control, with one customer noting that it remains barely warm to the touch during operation.

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12 customers mention "Functionality"12 positive0 negative

Customers find that the voltage regulator works great.

"Work great, need a heat sink if major diffence between input voltage and 3.3V output" Read more

"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...." Read more

"...this devices to power ESP8266's from a 5 VDC source and they work really well for this. Plenty of current available to run the ESP8266-01, and 12 E." Read more

"They work and are cheap. Packaged well. Gnd-vout-vin." Read more

3 customers mention "Quality"3 positive0 negative

Customers find the voltage regulator to be of good quality.

"Good Quality." Read more

"Flawless!" Read more

"Good quality..." Read more

3 customers mention "Temperature control"3 positive0 negative

Customers appreciate the temperature control of the voltage regulator, with one mentioning it stays barely warm to the touch.

"...and nut as a heat sink, used shrink tube to protect the bolt, runs stone cold." Read more

"...Also has convenient warming technology that increases the temperature relative to the amount of extra power it's disappearing...." Read more

"...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." Read more

Works great for my needs
5 out of 5 stars
Works great for my needs
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.
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Top reviews from the United States

  • Gecryan
    5.0 out of 5 stars Works great for my needs
    Reviewed in the United States on December 2, 2023
    Verified Purchase
    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.
    Customer image
    Gecryan
    5.0 out of 5 stars
    Works great for my needs

    Reviewed in the United States on December 2, 2023
    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.
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    Customer image
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  • Maat
    5.0 out of 5 stars Just what you need to power something that would normally require two AA/AAA batteries
    Reviewed in the United States on September 1, 2023
    Verified Purchase
    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.
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  • Amazon Customer
    5.0 out of 5 stars Good quality
    Reviewed in the United States on February 27, 2021
    Verified Purchase
    Function as specified
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  • Mr. P
    5.0 out of 5 stars Work Great!
    Reviewed in the United States on January 31, 2020
    Verified Purchase
    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.
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  • Fisher Man
    5.0 out of 5 stars Nice 3.3V regulators!
    Reviewed in the United States on March 23, 2021
    Verified Purchase
    Work great, need a heat sink if major diffence between input voltage and 3.3V output
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  • Max
    5.0 out of 5 stars Stuck with 5v and need 3.3v? LOOK NO FURTHER!
    Reviewed in the United States on July 22, 2021
    Verified Purchase
    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.
    2 people found this helpful
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  • dr046048
    5.0 out of 5 stars Does the job. Using to drive high power LED ...
    Reviewed in the United States on May 26, 2017
    Verified Purchase
    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.
    3 people found this helpful
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  • Jim Buchanan
    5.0 out of 5 stars They work well
    Reviewed in the United States on December 31, 2019
    Verified Purchase
    Not much to say I'm putting 5V in and getting 3.3V out. Perfect.
    2 people found this helpful
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