The 2027-09-BT1LF is a 2-pole gas discharge tube (GDT) from Bourns 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 90 V (±20% @ 100 V/s) and impulse sparkover ratings of 300 V at 100 V/µs and 500 V at 1000 V/µs. The device exhibits high surge current capability with ratings up to 25,000 A (8/20 µs) for single operation and maintains stable breakdown characteristics throughout its operational life. With UL recognition, RoHS compliance, insulation resistance exceeding 10¹° O, and an operating temperature range of -55°C to +125°C, this component provides reliable protection in demanding environments where transient voltage suppression is critical.