✅ Component type/category matches: Gas Discharge Tube (GDT) in DigiKey category Gas Discharge Tube Arresters (GDT).
✅ Manufacturer matches AVL requirement: Littelfuse Inc.
✅ Voltage - DC Spark Over (Nom): 470 V, exactly matches the required 470 V for 230VAC mains primary protection.
✅ Impulse Discharge Current (8/20µs): 20000A (20kA), exceeds the minimum required 10kA.
✅ Number of Poles: 2, matches the required 2-pole Line-Neutral protection.
✅ Mounting Type: Through Hole, matches the required mounting style.
✅ RoHS Compliance: ROHS3 Compliant, satisfies the RoHS requirement.
✅ Application fit: As a 470 V, 2-pole, high-surge GDT from Littelfuse, this part is suitable for first-stage primary surge protection on 230VAC mains ahead of a MOV.
All required specifications are satisfied. The selected component is approved.