GTCX35-XXX-R05 Series Gas Discharge Tubes GTCX35-XXXM-R05 Series Littelfuse Circuit Protection 5mm 3Pole GDTs (ceramic gas discharge tubes), are commonly used to help protect sensitive telecom equipment such as communication lines, signal lines and data transmission lines from damage caused by transient surge voltages that typically result from lightning strikes and equipment switching operations. Littelfuse Circuit Protection GDTs offer a high level of surge protection, low capacitance and a broad array of breakover voltage levels, making them suitable for applications such as MDF (Main Distribution Frame) modules, high data-rate telecom applications (e.g. ADSL, VDSL), and surge protection on power lines. Littelfuse Circuit Protection GDTs can help equipment meet the most stringent regulatory standards. Features: Benefits:  3Pole, 5mm devices  Compact, small form factor suitable for efficient assembly  Broad voltage range from 75V-600V  Helps provide overvoltage fault protection against  Various form factors: surface-mount, leaded, no high energy surges leads  Suitable for high-frequency applications  Optional fail-short mechanism on some devices  Low capacitance and insertion loss  Crowbar overvoltage protection  UL 497B recognized  RoHS compliant  Devices tested per ITU K.12 recommendations  Non-radioactive materials Applications:  Telecommunications • Industrial and consumer electronics, such as - MDF modules, xDSL equipment, RF system - Surge protectors protection, antenna, base station - Alarm system  © 2016 Littelfuse,Inc. DOCUMENT: SCD27305  Telecommunications • Industrial and consumer electronics, such as Specifications are subject to change without notice. STATUS: RELEASED Revised July 26,2016 1 REV: G DATE: JULY 26, 2016  MDF modules, xDSL equipment, RF sytem  Protection, antenna, pase station GTCX35-XXX-R05 Series Gas Discharge Tubes GTCX35-XXXM-R05 Series Device Voltage Ratings and Part Marking Impulse DC Holdover Part Number DC Sparkover On-State Voltage Sparkover Voltage @100V/s Nominal Per ITU K.12 ±20% Tolerance @100 Vµs (V) @1000 Vµs (V) (@ 1A) (<150ms) (V) (V) (V) GTCX35-750M-R05 75 450 550 <52 20 GTCX35-900M-R05 90 450 550 <52 20 GTCX35-141M-R05 140 500 600 <80 20 GTCX35-151M-R05 150 500 600 <80 20 GTCX35-201M-R05 200 600 700 <135 20 GTCX35-231M-R05 230 600 700 <135 20 GTCX35-251M-R05 250 600 700 <135 20 GTCX35-261M-R05 260 700 800 <135 20 GTCX35-301M-R05 300 800 900 <150 20 GTCX35-351M-R05 350 900 1000 <150 20 GTCX35-401M-R05 400 900 1000 <150 20 GTCX35-421M-R05 420 900 1000 <150 20 GTCX35-471M-R05 470 1050 1150 <150 20 GTCX35-501M-R05 500 1100 1200 <150 20 GTCX35-551M-R05 550 1300 1400 <150 20 GTCX35-601M-R05 600 1300 1400 <150 20 Note:X options: S: Surface-mount; A: Axial-leaded; N: No-leaded Device Surge Rating, Capacitance, Insulation Resistance, UL Listing AC Impulse Discharge Impulse Insulation UL Part Number Discharge Current Capacitance Life Resistance Rating Current (1sec duration; 10 hits) 8x20µs 10x1000µs UL497B @50 Hz @1Mhz @100V* 10 hits 300 hits #E179610 GTCx35-xxxM-R05 5kA 100A 5Arms <1pF 10,000 (MΩ) All Devices * Devices <=150V measured @ 50V Devices >= 500V measured @ 250V © 2016 Littelfuse,Inc. DOCUMENT: SCD27305 Specifications are subject to change without notice. STATUS: RELEASED Revised July 26,2016 2 REV: G DATE: JULY 26, 2016 GTCX35-XXX-R05 Series Gas Discharge Tubes GTCX35-XXXM-R05 Series Product Dimensions DIMENSIONS = MILLIMETERS [INCHES] Axial Leaded (GTCA35-XXXM-R05-FT) Axial Leaded (GTCA35-XXXM-R05) Surface-mount (GTCS35-XXXM-R05) “T” Leaded (GTCT35-XXXM-R05) No Leads with –FT (GTCN35-XXXM-R05-FT) No Leads (GTCN35XXM-R05) © 2016 Littelfuse,Inc. DOCUMENT: SCD27305 Specifications are subject to change without notice. STATUS: RELEASED Revised July 26,2016 3 REV: G DATE: JULY 26, 2016 GTCX35-XXX-R05 Series Gas Discharge Tubes GTCX35-XXXM-R05 Series Pad Layout – Surface-mount Devices X Y1 Y2 Z1 Z2 NOM NOM NOM NOM NOM mm: 6.0 3.6 3.6 2.5 1.3 in*: (0.236) (0.142) (0.142) (0.098) (0.051) General Characteristics No Radioactive Material Storage Temperature: -40º C to +90º C Operating Temperature: -40º C to +90º C Body: Nickel Plated Leads: Surface-mount, “T” and Axial Devices: Tin Plated Devices with no leads: Nickel Plated Soldering Notes: Devices with no leads: non-solderable; suitable for insertion into a magazine clip Materials Information RoHS Compliant ELV Compliant Packaging Information Part Description Tray / Reel Standard Package No Leaded: GTCN35-XXXM-R05 100 pcs (Tray) 2,500 pcs With Leads: GTCA35-XXXM-R05/GTCT35-XXXM-R05 100 pcs (Tray) 1,000 pcs Surface-mount (T&R): GTCS35-XXXM-R05-2 1,000 pcs (Reel) 8,000 pcs © 2016 Littelfuse,Inc. DOCUMENT: SCD27305 Specifications are subject to change without notice. STATUS: RELEASED Revised July 26,2016 4 REV: G DATE: JULY 26, 2016 GTCX35-XXX-R05 Series Gas Discharge Tubes GTCX35-XXXM-R05 Series Part Numbering System Example Part Number: GTCX35-351M-R05-FT GT = Gas Tube C = Ceramic X = Lead Configuration: N= No leads; A= Axial Leads; S= Surface-mount; T= T Configuration Leads 3 = 3 Electrode device 5 = 5mm Diameter 351 = DC Spark Over Voltage of 350V (at 100V/s) M = Tolerance of 20% on DC Spark Over Voltage R = Product Family Designator 05 = Surge rating: 8x20µs 5kA 10 times FT = With Fail-Short mechanism -2 Tape and Reel © 2016 Littelfuse,Inc. DOCUMENT: SCD27305 Specifications are subject to change without notice. STATUS: RELEASED Revised July 26,2016 5 REV: G DATE: JULY 26, 2016 GTCX35-XXX-R05 Series Gas Discharge Tubes GTCX35-XXXM-R05 Series Part Marking Reference Guide Example Part Marking: 35 R05 GN Manufacturer’s Mark = 35 = Voltage Designator (35 = 350V) R05 = Product Family Designator + Surge Current 5kA (8x20µs 10 hits) GN = Year and Week of Manufacture Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. © 2016 Littelfuse,Inc. DOCUMENT: SCD27305 Specifications are subject to change without notice. STATUS: RELEASED Revised July 26,2016 6 REV: G DATE: JULY 26, 2016