The 2035-09-BLF is a miniature 2-pole gas discharge tube designed for overvoltage and surge protection in electronic systems. It features a 5 mm diameter, 4 mm long cylindrical design with a DC sparkover voltage of 90 V (±20%) at 100 V/s, and an impulse sparkover voltage of 300 V at 100 V/µs and 550 V at 1000 V/µs. The device exhibits high surge current capability, handling 10,000 A impulse discharge (8/20 µs) for minimum 1 operation and 5,000 A for greater than 10 operations, with an insulation resistance exceeding 10¹° O and operating temperature range of -55°C to +85°C. The tube is UL recognized (File E153537) and available in RoHS-compliant versions, making it ideal for telecommunications, industrial electronics, automotive, and military applications requiring reliable transient protection.