612 Vermont

3.5 Volt Mini Christmas Replacement Bulbs for Incandescent String Lights, Pinched Base, 50 Count

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• 3.5 volt mini replacements bulbs for incandescent Christmas lights
• Typically used in 35 or 70 count string lights
• Pinched base shape fits most light sets
• Value pack includes 50 lamps
• Choose from Clear, Multi, Red, Green, Blue, Yellow, Amber, and Pink
• Available in two wattages: 125 mA (0.43 Watt) OR 200 mA (0.70 Watt)
• Please, check the white tag near the plug to confirm bulb specifications

These 3.5V mini Christmas replacement bulbs for incandescent string lights are made with a pinched base. This unique shape guarantees a secure fit in most every string light (regardless of whether the pinched base is required or not). Value pack includes 50 clear bulbs. 3.5 volt bulbs are typically used in strands of 35 or 70 lights and are common on multi-function light sets and other novelty light sets made for display in yards or windows.

Please be sure to reference the tag near the male plug on your light set to confirm both the voltage and the wattage for your string. Voltage, amperes, and wattage must all match to your light set.

How to determine the voltage required: Reference the tag near the plug on existing light set. If the voltage is not specifically stated for the individual bulbs, then take the total voltage for the light set and divide by the number of lights in one circuit. 3.5V bulbs are most often used in 35 light sets (one-way) and 70 light sets (two-way).

Determine the correct wattage: Reference the tag near the plug on existing light set. Look for wattage for the individual light bulbs.  If not available for the individual bulbs, then figure the wattage for the entire light set and divide by the number of bulbs in the strand to figure out the wattage for an individual replacement bulb. 

These 3.5V replacement bulbs are sold 'naked' which means that they do not come with any plastic husk. Please be sure to keep the plastic husk that the old bulbs are removed from so that these will incorporate into your string light. The unique pinched base shape to these bulbs allows them to set fully down inside of most any husk to make meaningful contact with the brass contacts inside.

If you have any questions, or need help troubleshooting, please feel free to give us a call at 1-877-750-0971. We can also be reached through the contact us form on our website.

Bulb Dimensions:
Length of glass - 7/8 inch
Length of wires - 3/8 inch
Diameter of glass - 5 mm


prop-65-warning-6-pt.png WARNING: This product can expose you to chemicals including lead, benzene, and cadmium, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.  Wash hands after use.  For more information go to

Additional Details


53 Reviews

  • 5
    3.5v mini lights

    Published by Glenn H. on Mar 8th 2024

    The 3.5 Volt Mini Christmas Replacement Bulbs for Incandescent String Lights, Pinched Base was exactly what I needed to fix something vs buying something new. I am very pleased that I was able to find the items and have them delivered. Thank You.

  • 5
    3.5 Volt mini Christmas replacement bulbs for incandescent string lights.

    Published by Jim A. on Feb 4th 2024

    Shipped rapidly, worked perfectly. Well pleased!

  • 5
    The bulbs were just what I needed.

    Published by Gary R B. on Jan 25th 2024

    Derek is always very helpful

  • 5
    Excellent Technical Support and Product Quality

    Published by Thomas C. on Dec 21st 2023

    I very much appreciated Rebecca's excellent technical support regarding these miniature bulbs. She advised on the correct bulb purchase and got my Christmas lights operational again! In addition, each bulb in the package was operational for a 100% quality rating. Since this was not my last experience at another vendor, 612 Vermont has me as a customer from now on. Thank you again, Rebecca, for your assistance.

  • 5
    Lights work perfectly in my holographic Christmas train. They burn bright and steady. Easy to replace burned out bulbs. Highly recommend this product for props requiring 3.5v bulbs.

    Published by MarkS on Dec 13th 2023

    I was using 2.5v 100ma bulbs for this prop as it has 300 lights. But when I switched to the recommended 3.5v light things were so much better. The lights burn brighter and no occasional flash burnout.

  • 5
    3.5 volt mini bulb replacement

    Published by John Lanigan on Nov 27th 2023

    Yes I’m old school and replace blown out Christmas bulbs. These were perfect AND at a realistic price point. Others are three times as much probably due to pretty packaging.

  • 5
    3.5 volt mini bulbs

    Published by Brenda on Oct 26th 2023

    I like the pinched base. They work great! Thank you.??

  • 5
    These bulbs were exactly what i needed.

    Published by Karl Huber on Mar 1st 2023

    Derek was very helpful with getting and ordering these bulbs. It brought my wreath back to life. Give Derek a thank you !!

  • 5
    replacement bulbs!

    Published by Al R. on Feb 17th 2023

    works well; thank you!

  • 4
    Red not pink.

    Published by Daniel M. on Feb 9th 2023

    My last order was for pink bulbs. While the bulbs work perfectly, they are closer to red than pink. I expected them to be a bright pink. But they served the purpose.

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