The 2027-15-BLF is a 2-pole gas discharge tube designed for overvoltage and surge protection across telecommunications, industrial, commercial, consumer, and automotive electronics. It features an 8 mm diameter and 6 mm length with a DC sparkover voltage of 150 V (±15%) at 100 V/s and impulse sparkover ratings of 350 V at 100 V/µs and 575 V at 1000 V/µs, providing reliable protection against transient surges. The device exhibits high surge current capability with ratings up to 25,000 A (8/20 µs) for single operations and maintains stable breakdown characteristics throughout its operational life. With insulation resistance exceeding 10¹° O, glow voltage greater than 70 V at 10 mA, and arc voltage greater than 10 V at currents above 1 A, this tube delivers consistent performance across the -55°C to +125°C operating temperature range. The 2027-15-BLF is UL recognized and available in RoHS-compliant versions, making it suitable for demanding protection applications requiring high reliability and compliance with international standards.