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Krypton/Xenon

All the light bulbs in this category use krypton and/or xenon as part or all of the gas fill. Most standard incandescent light bulbs are filled with inert argon plus enough nitrogen to suppress arcing between the lead-in wires. Krypton and xenon gas contribute two features that improve the efficacy (or efficiency) of the lamp compared to ones filled with argon. Firstly, both gases have a lower heat conductivity than argon. Secondly, the larger molecule size of both gases retards the evaporation of the tungsten filament and increases bulb life. Xenon is an improvement over krypton for both factors.

Depending on bulb size, type of filament and mixture ratios, adding krypton and xenon gas can increase the efficacy of the lamp by 7% to 20%. Xenon is the more expensive of the two and is used primarily for special application bulbs.

Why Krypton and Xenon Bulbs Have Longer Rated Life

You may have wondered why some bulbs feature krypton or xenon gas. For many years, incandescent bulbs were filled with nitrogen gas. When argon became more affordable, it was substituted for nitrogen because it decreased the rate of evaporation of the tungsten filament and increased bulb life. More recently, krypton or xenon are used in some bulbs in place of argon. Because the molecular size is larger than argon, both these inert gases do a better job of retarding the evaporation of the filament and give longer life to the bulb. Also, since both krypton and xenon have lower heat conductivity than argon, the filament temperature is higher which increases the efficacy of the bulb. Xenon is better than krypton at both of these enhancements, but it is significantly more expensive. These specialty gases are used in filament bulbs where the added cost is justified by the improved performance.

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  1. JC50XE/12/F - 50W 12V Xenon - BI-Pin Base - Frosted
  2. Eiko KPR103 Bulb | 0.75A 3.6V Krypton B3 1/2 SC Miniature Flanged Base
    Price: $0.75
    1 to 9 $0.75 each
    10 to 29 $0.74 each
    30 and above $0.71 each

    In Stock

  3. Eiko KPR118 Bulb | 0.55A 7.2V Krypton B3 1/2 SC Miniature Flanged Base
    Price: $0.89
    1 to 9 $0.89 each
    10 to 29 $0.75 each
    30 and above $0.67 each

    In Stock

  4. CEC XPR16 Bulb | 0.70A 15.6V Xenon T3 1/4 P13.5s Base
  5. KR25CTC/25 Bulb 25W 120V B8 Incandescent Krypton Candelabra Base Clear
    Price: $1.43
    1 to 9 $1.43 each
    10 to 29 $1.40 each
    30 and above $1.36 each

    In Stock

  6. Bulbrite KR60CFC/32 Bulb | 60W 120V CA10 Krypton E12 Base
    Price: $1.47
    1 to 9 $1.47 each
    10 to 29 $1.44 each
    30 and above $1.40 each
  7. Bulbrite KR60CTC/32 Bulb | 60W 120V B10 Krypton E12 Base
    Price: $1.50
    1 to 9 $1.50 each
    10 to 29 $1.47 each
    30 and above $1.43 each

    In Stock

  8. Eiko 50124 JF07XE | 0.833A 12V Xenon T3 1/4 Clear Rigid Loop Base Bulb
    Price: $1.59
    1 to 9 $1.59 each
    10 to 29 $1.56 each
    30 and above $1.51 each

    In Stock

  9. Bulbrite KR10CTC/25 Bulb | 10W 120V B8 Krypton Candelabra Base
    Price: $1.68
    1 to 9 $1.68 each
    10 to 29 $1.65 each
    30 and above $1.60 each

    In Stock

  10. CEC XPR18 Bulb | 0.59A 18V T3.25 Single Contact Miniature Flange Base
  11. Bulbrite RLX5F/24 5W X2000 Dimmable Xenon T3.25 Capsule Bulb - Rigid Loop Base - 24V - Frost
  12. Bulbrite KR40ETC/32 Bulb | 40W 120V B10 Krypton Medium Base
    Price: $1.88
    1 to 9 $1.88 each
    10 to 29 $1.84 each
    30 and above $1.79 each

    In Stock

  13. KPR2 Bulb 2.38V .5A B3-1/2 Krypton Single Contact Mini Flange Base
    Price: $1.89
    1 to 9 $1.89 each
    10 to 29 $1.85 each
    30 and above $1.80 each

    In Stock

  14. Bulbrite KR25G16CL 25W Krystal Touch Dimmable Krypton G16 Globe Bulb - E12 Base
  15. Bulbrite XE5/12 5W X2000 Dimmable Xenon T3.25 Capsule Bulb - Wedge Base - 12V
  16. Bulbrite KR15CFC/25 15W Krystal Touch Dimmable Krypton CA8 Flame Tip Chandelier Bulb - E12 Base
  17. Bulbrite XE10/24 10W X2000 Dimmable Xenon T3.25 Capsule Bulb - Wedge Base - 24V
  18. Bulbrite KR40G11CL 40W Krystal Touch Dimmable Krypton G11 Globe Bulb - E12 Base
  19. Bulbrite KR25CTC/32 25W Krystal Touch Dimmable Krypton B10 Torpedo Chandelier Bulb - E12 Base
  20. Bulbrite KR15G11CL 15W Krystal Touch Dimmable Krypton G11 Globe Bulb - E12 Base

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