Gas Discharge Tube： ：GF4 Series SMD 2-Electrode Φ4*4.2 mm Type Features 1. RoHS compliant 2. SMD type series 3. DC spark-over voltage：75~600V 4. Low capacitance 5. 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 Product Code G G F 4 2 R 0 7 5 N B M 1 2 3 4 5 6 7 8 9 10 11 Electrode Number 2R THINKING Gas Discharge Tube Lead Wire Style 2 Electrodes N No Lead Packaging B T R Type Series (size) F4 Φ4.0*T4.2 THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specification are subject to change without notice. 12 Internal Control Code Bulk Ammo Taping Reel Taping DC Spark-over Voltage 070 230 600 14B 25B 13 Product Type M 70V 230V 600V 1400V 2500V 1 SMD Round Type www.thinking.com.tw 2010.09 Gas Discharge Tube： ：GF4 Series SMD 2-Electrode Φ4*4.2 mm Type Characteristics DC Breakdown Voltage Maximum Impulse Breakdown Voltage Type Maximum Impulse Discharge Current (8/20µs) 1 time Normal Alternating Discharge Current Impulse Life (10/1000µs) 10 times 50Hz, 1Sec Single 9 Cycles Minimum Insulation Resistance Maximum Capacitance (1MHz) Safety approvals (GΩ) (pF) UL 497B (100V/S) 100V/µs 1KV/µs (V) (V) (V) GF42R075NRM 75±20% 700 800 52 √ GF42R090NRM 90±20% 700 800 52 √ GF42R145NRM 145±20% 700 800 52 √ GF42R230NRM 230±20% 600 700 80 √ GF42R250NRM 250±20% 600 700 (KA) 5 100A DC Holdover Voltage Times 3 300 (A) 3 <150ms (V) 6 80 √ 1 0.5 GF42R300NRM 300±20% 600 700 150 √ GF42R350NRM 350±20% 650 800 150 √ GF42R400NRM 400±20% 700 800 150 √ GF42R470NRM 470±20% 800 900 150 √ GF42R600NRM 600±20% 900 1000 150 √ Note1: UL / 497B→ File No. E245070 Note 2 Insulation resistance test condition: DC Breakdown Voltage DC Measuring Voltage 70-90V 50V 120-400V 100V 470-600V 250V Dimension (unit:mm) 4.2± 0.5 4.0± 0.4 4.0± 0.4 0.4± 0.2 Recommended Pad Size (unit: mm) 3.5 5.0 1.3 THINKING ELECTRONIC INDUSTRIAL Co., LTD. All specification are subject to change without notice. 2 www.thinking.com.tw 2010.09 Gas Discharge Tube： ：GF4 Series SMD 2-Electrode Φ4*4.2 mm Type Marking Packaging Taping P0 E D F W t P K Quantity： ： 900pcs per reel (13” ”) Unit: mm ITEM P P0 W F E D K t Spec. 12.0 4.0 16.0 7.5 1.75 Φ1.55 4.6 0.5 Tol. ±0.1 ±0.1 ±0.3 ±0.1 ±0.1 ±0.05 ±0.1 ±0.05 330 ± 4.0 50 typ. 15typ. 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. 3 www.thinking.com.tw 2010.09