Gas Discharge Tube: GB8 Series 3-Electrode Φ8.0*T10 mm Type Features 1. RoHS compliant 2. Rugged ceramic-metal construction 3. Available with or without leads 4. Available with fail-safe clip 5. DC spark-over voltage：75~600V 6. Low capacitance 7. Agency recognition :UL Recommended Applications 1. Data transmission lines 2. Communication lines 3. CATV system 4. Power distribution system 5. Power supplier 6. Test equipment 7. Instrumentation circuits Part Number Code G B 8 3 R 0 7 5 R B 1 2 3 4 5 6 7 8 9 10 Electrode Number Product Code G 3R THINKING Gas Discharge Tube Lead Wire Style 3 Electrodes N R No Lead Radial Lead B8 Φ8.0*T10 THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specification are subject to change without notice. 12 Packaging B T R Type Series (size) 11 Internal Control Code Bulk Ammo Taping Reel Taping DC Spark-over Voltage 070 230 600 14B 25B 13 Product Type F 70V 230V 600V 1400V 2500V 1 Fail-Safe Clip www.thinking.com.tw 2010.09 Gas Discharge Tube: GB8 Series 3-Electrode Φ8.0*T10 mm Type Characteristics DC Breakdown Voltage Max. Impulse Breakdown Voltage Type Impulse Discharge Current (8/20µs) Impulse Life (10/1000µs) Normal Alternating Discharge Current DC Holdover voltage Minimum Insulation Resistance Maximum Capacitance (1MHz) Safety approvals (GΩ) (pF) UL 497B (100V/S) 100V/µs 1KV/µs 10 times (5 times each polarity) 200 A 50Hz,1Sec <150ms (V) (V) (V) (KA) Times (A) (V) GB83R075□□(F) 75±20% 600 700 52 √ GB83R090□□(F) 90±20% 600 700 52 √ GB83R145□□(F) 145±20% 500 700 52 √ GB83R200□□(F) 200±20% 500 700 135 √ GB83R230□□(F) 230±20% 600 700 135 √ GB83R250□□(F) 250±20% 600 700 GB83R300□□(F) 300±20% 700 900 150 √ GB83R350□□(F) 350±20% 700 900 150 √ GB83R400□□(F) 400±20% 800 1000 150 √ GB83R420□□(F) 420±20% 800 1000 150 √ GB83R470□□(F) 470±20% 900 1000 150 √ GB83R600□□(F) 600±20% 1000 1100 150 √ 20 130 20 135 √ 10 2 Note1：The first □ is the style of lead wire, the second □ is packaging. Note2：F = With fail-safe clip for optional. Note 3: UL / 497B→ File No. E245070 Note 4: Insulation resistance test conditions: DC Breakdown Voltage DC Measuring Voltage 75-90V 50V 145-400V 100V 420-600V 250V THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specification are subject to change without notice. 2 www.thinking.com.tw 2010.09 Gas Discharge Tube: GB8 Series 3-Electrode Φ8.0*T10 mm Type Dimensions □= R (Radial lead type) Unit: mm Item D T T1 L S d Dimensions Spec. 8.0 10.0 13.4 7.5 4.4 1.0 Tolerance +0.2/-0.8 ±0.5 +0.8/-0.5 ±0.5 ±0.4 ±0.05 □= N (No lead type) Unit: mm Item Dimensions Spec. Tolerance D 8.0 +0.2/-0.8 T 10.0 ±0.5 □=F (Fail-Safe Device) Unit: mm T1 R1 Item R1 R2 T1 L S d R2 L d S THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specification are subject to change without notice. 3 Dimensions Spec. Tolerance 8.1 ±0.3 9.8 ±0.4 13.4 ±0.4 11.0 ±0.5 4.4 ±0.3 1.0 ±0.05 www.thinking.com.tw 2010.09 Gas Discharge Tube: GB8 Series 3-Electrode Φ8.0*T10 mm Type Marking Packaging Bulk Plastic Tray Inner Box Outside Box (210x220x12mm) (210x225x60mm) (450x245x345mm) 500 PCS/Box 5000 PCS/Carton 100 PCS/Plastic tray Storage Conditions of GDT (I) Storage conditions: 1. Storage Temperature: -10℃ ~ +40℃. 2. Relative humidity: ≦75%RH. 3. Gas discharge tube must be kept away from sunlight and stored in a non-corrosive atmosphere. (II) Shelf life: 1 year. THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specification are subject to change without notice. 4 www.thinking.com.tw 2010.09