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Top rated gas tube arrestors

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Top rated gas tube arrestors

AI-generated summary · updated July 29, 2026 · verify details before purchase.

  1. Best overall

    Littelfuse LA Series 300V Gas Tube Arrestor

    4.7/5 $2-$5

    High surge capacity (5kA) with low capacitance, ideal for telecom and data line protection. Reliable performance and long life.

    • High surge rating
    • Low capacitance
    • Wide operating temperature range
    • Leaded package may be bulky for SMD designs
    View on Amazon manufacturer site
  2. Best surface-mount

    Bourns 2038-15-SM-RPLF GDT

    4.5/5 $1-$3

    Compact SMD GDT with 20kA surge capacity, excellent for high-density PCB designs. Low arc voltage and fast response.

    • Surface-mount package
    • High 20kA surge
    • Fast response time
    • Higher capacitance than some competitors
    • Limited DC breakdown options
    View on Amazon manufacturer site
  3. Best budget pick

    EPCOS (TDK) S14K25G5 Surge Arrestor

    4.3/5 $0.50-$2

    Cost-effective GDT with 5kA surge rating, suitable for consumer electronics. Good balance of price and performance.

    • Very affordable
    • Compact size
    • Reliable for basic protection
    • Lower surge rating than premium options
    • Limited DC breakdown options
    View on Amazon manufacturer site
  4. Littelfuse GTX Series 1000V Gas Tube Arrestor
    Best high-voltage Littelfuse

    Littelfuse GTX Series 1000V Gas Tube Arrestor

    4.6/5 $9.20

    Rugged GDT rated for 1000V with 20kA surge capacity, ideal for AC power line and industrial applications.

    • High voltage rating
    • Very high surge capacity
    • Durable construction
    • Larger footprint
    • Higher price point
    View on Amazon manufacturer site
  5. Best for telecom

    Bourns GDT35G-23 Series 350V

    4.4/5 $1-$4

    Dual-electrode GDT with low capacitance and high surge capacity, commonly used in telecom and networking equipment.

    • Low insertion loss
    • High surge 10kA
    • Telecom-optimized
    • Narrow voltage range
    • No SMD variant
    View on Amazon manufacturer site
  6. Best for DC protection

    EPCOS (TDK) A70K250G5 Gas Discharge Tube

    4.2/5 $0.80-$2.50

    Reliable GDT for DC circuits with 5kA surge rating and low capacitance, good for signal line protection.

    • Low capacitance
    • Stable DC breakdown
    • Compact radial leads
    • Not for high-frequency applications
    • Limited AC performance
    View on Amazon
  7. Best for industrial

    Raychem (TE) GDT 2315-25-SM

    4.5/5 $2-$6

    High-reliability GDT for harsh environments, with 15kA surge rating and wide operating temperature range (-40 to +90°C).

    • High surge 15kA
    • Wide temperature range
    • RoHS compliant
    • Expensive
    • Large size
    View on Amazon
  8. Best low-voltage

    Littelfuse SL1021B Series 75V GDT

    4.3/5 $0.50-$1.50

    Miniature GDT for low-voltage signal lines, 5kA surge capacity, ideal for sensitive electronics.

    • Very low capacitance
    • Tiny footprint
    • Fast response
    • Low voltage only
    • Lower surge than larger GDTs
    View on Amazon manufacturer site

Buying advice

When choosing a gas tube arrestor, consider the required DC breakdown voltage, surge capacity (usually 5kA-20kA), package type (through-hole or SMD), and capacitance (especially for high-frequency signals). For telecom lines, low capacitance is crucial. For high-reliability industrial applications, opt for higher surge ratings and wider temperature ranges. Amazon's 'Industrial & Scientific > Electronic Components' category includes genuine GDTs from brands like Littelfuse, Bourns, and EPCOS, but always verify the product page to ensure it's categorized correctly.

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