Gas Discharge Tubes SL1026 Series RoHS SL1026 Series Description The SL1026 Series is a heavy-duty transient suppresser using Gas Plasma technology. In response to transients that exceed the device s breakover voltage, the device changes from a very high impedance state to a low impedance state to conduct harmful current away from the protected system. The SL1026 is designed to protect electrical and electronic equipment such as communications, control and railway systems. Carefully designed geometry ensures against short circuiting if a failure occurs due to conditions and events beyond the design criteria. Optional electrical mounting clip (part SL1053 ) is available to aid mounting and connection. 3 Electrode GDT Graphical Symbol Features a = TIP b = RING a b RoHS compliant Will protect against e = GROUND capacitor discharge 55 kA surge capability (centre electrode) voltage transient (single shot) tested with waveforms as specified 8/20S pulse as defined e in RIA 12. by IEC 61000-4-5 Will protect against 40 kA surge capability Additional Information double exponential (repetitive) voltage transient Will protect against waveforms as specified Trapezoidal waveforms in IEC 571. as specified in RIA 12. Datasheet Resources SamplesSamples Applications Signaling equipment. Trackside cabinets. Communication Cell phone base equipment stations Control gear. Electrical Characteristics DC Voltage 1 1 1 1,2 AC AC Surge Max 1 Max Single 100 V/sec 1 DC Current Current Current Single 150(+) and 150(-) Surge Part Number* Voltage 9 cycles 50Hz 8/20Sec Surge 10/1000Sec 10/350Sec 1kV/s 50-60Hz 1 sec x10 x 10 8/20Sec (Amps) MIN MAX (kAmps) (Amps) (Amps) (kAmps) (kAmps) SL1026-275 200 350 800 200 10 20 40 8 200 SL1026-400 300 500 900 200 10 20 40 8 200 SL1026-700 560 840 1300 200 10 20 40 8 200 NOTES: End of life limits -- DC: 50% of minimum initial DC breakdown voltage limit to 150% of maximum initial DC breakdown voltage limit. -- Impulse: less that 150% of initial impulse breakdown voltage limit. 1. Total current through center electrode, tested using SL1053B-NL holder 2. Exceeds capability of SL1053B-NL holder 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/12/17Gas Discharge Tubes SL1026 Series Voltage vs. Time Characteristic Product Dimensions SL1026 GDT Series Profile Max dynamic breakover 45.0 Max voltage 22.0 Ref 8.7 9.1 Max Max Type 1053 Holder Profile Hold-over voltage On-State voltage 0 200 400 600 800 1000 1200 Time (ns) Electrical Specifications Insulation > 10G at 100 Volts Resistance Capacitance: <=2.5pf, 1MHz 0 Volts Bias All dimensions in mm <150mS, tested at 130 volts according to Holdover Voltage: ITU-T Rec. K.12 & REA PE 80 Part Numbering System ~35 Volts, On State Voltage at 1 Amp Arc Voltage: (Depending on Voltage Type) SL 1026 Glow to Arc ~1 Amp Voltage Transition Current: > 150 Volts, depending on Voltage Glow Voltage: Type Packaging GDT devices are provided as bulk pack in poly bag -- Physical Specifications 20 pieces per bag and 5 bags per carton. Weight: 11g (0.388 oz.) Electrode Base: Nickel Iron Alloy Materials: Electrode Plating: Nickel Body: Ceramic Color coded body SL1026-275: Black/Black Part Marking: SL1026-400: Black/Yellow SL1026-700: Black/Red Storage and Operating -40C to +90C Temperature: Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics. 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/12/17 Voltage (V)