Gas Discharge Tubes SG Series SG Series RoHS Description Littelfuse SG series GDT offers high surge ratings in a miniature package. It’s designed for surface mounting on PCB with small size 4.5x3.2x2.7mm. Low insertion loss is perfectly suited to broadband equipment applications. The capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. These devices are extremely robust and are able to divert a 1000A pulse without destruction. Features Agency Approvals • RoHS compliant and • Ultra small devices Lead-free offered in a variety of Agency Agency File Number • GHz working frequency mounting lead forms E128662 • Excellent stability on • Non-Radioactive multiple pulse duty cycle • Low capacitance (<1pF) • Excellent response to • Voltage Ranges 75V to 2 Electrode GDT Graphical Symbol fast rising transients. 600V • Ultra Low Insertion Loss • UL Recongized • 1-2KA surge capability • Conforms to ITU-T K12, tested with 8/20μS IEC 61000-4-5 pulse as defined by IEC • Square Outline 61000-4-5 Additional Information Applications • Communication • Broadband equipment equipment • ADSL equipment, Datasheet Resources SSaammpplleess • CATV equipment including ADSL2+ • Test equipment • XDSL equipment • Data lines • Satellite and CATV equipment • Power supplies • General telecom • Telecom SLIC equipment protection © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BA.08/26/20

Gas Discharge Tubes SG Series Electrical Characteristics Device Specifications (at 25°C) Life Ratings Nominal Impulse Impulse Nominal AC Nominal Part DC Breakdown Breakdown Breakdown Insulation Capaci- Arc Glow to Arc Discharge Impulse Impulse Number in Volts in Volts In Volts Resistance tance Voltage Transition Glow Current Discharge Discharge (@100V/s) (@1MHz) Voltage Current (@100V/µs) (@1 Kv/ (@1A) Current (x10 Current (x10 (10/1000µs µsec) @50Hz) @8/20µs) Min. Typ. Max. Max. Min. Max. 100 cycles) SG75 52 75 98 500 650 >1GΩ SG90 63 90 117 500 600 2 A 2kA (at 50VDC) SG150 105 150 195 500 600 ~10 V ~1.0 A ~60 V >1GΩ SG200+ 140 200 260 550 700 <1 pf 2.5 A (at 100VDC) SG230 172 230 288 650 800 2 A SG300 225 300 375 700 850 ~12 V ~0.5 A ~90 V SG300Q 210 300 390 580 650 ~20 V ~0.8 A ~140 V NA* 10 A SG350 263 350 437 750 900 >1GΩ (at ~90 V 2 A SG350Q 263 350 437 600 700 50VDC) <0.8 pf ~12 V ~0.5 A ~140 V NA* 1kA SG400 300 400 500 800 950 ~90 V 2 A SG420 315 420 525 800 1000 ~10 V ~60 V 2 A SG420Q 315 420 525 650 750 <1 pf ~20 V <1.0 A NA* SG450Q 370 450 500 680 750 ~20 V 1 A >1GΩ ~140 V SG500Q 400 500 600 950 1050 <0.5 pf ~16 V ~0.1 A (at 100VDC) 2 A SG600Q 450 600 750 1100 1200 <1 pf ~20 V <0.5 A * Specification is not applicable for quick response (SGxxxQ) version of product + Not UL Recognized Product Characteristics Voltage vs. Time Characteristic Device Tin Plated 17.5±12.5 Microns Materials Construction Ceramic Insulator. Max dynamic breakover voltage Storage and Operational -40 to +90 °C Temperature e g Typical Insertion Loss olta(V) V @ 1.0 GHz = 0.01 dB Hold-over voltage @ 1.4GHz = 0.1 dB @ 1.8 GHz = 0.53 dB On-State voltage @ 2.1 GHz = 0.81 dB @ 2.45 GHz= 1 dB @ 2.8 GHz = 1.2 dB 0 200 400 600 800 1000 1200 Time (ns) @ 3.1 GHz = 1.5 dB @ 3.5 GHz = 2.1 dB © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BA.08/26/20

Gas Discharge Tubes SG Series Soldering Parameters - Reflow Soldering (Surface Mount Devices) Reflow Condition Pb – Free assembly t P - Temperature Min (T ) 150°C T s(min) P Critical Zone Pre Heat - Temperature Max (T ) 200°C Ramp-up TL to TP s(max) - Time (Min to Max) (ts) 60 – 180 secs TL t Average ramp up rate (Liquidus Temp (TL) to peak 3°C/second max eTS(max) L TS(max) to TL - Ramp-up Rate 5°C/second max ruta Ramp-down - Temperature (T) (Liquidus) 217°C re Preheat Reflow L pmTS(min) - Temperature (t) 60 – 150 seconds e t L T S Peak Temperature (T) 260+0/-5 °C P Time within 5°C of actual peak Temperature (t) 10 – 30 seconds 25 p time to peak temperature Time Ramp-down Rate 6°C/second max (t 25ºC to peak) Time 25°C to peak Temperature (T) 8 minutes Max. P Do not exceed 260°C Device Dimensions Device Marking Dimensions in Millimeters. Type Production Code Year Code (last digit) 2.7 +/- 0.3 A3A 0.5 +/- 0.1 3.2 +/- 0.3 4.5 +/- 0.3 Production Month Code 5.2 Type Code Month Code 2.8 4 A SG75 A January B SG90 B February C SG150 C March D SG230 D April E SG300 E May Recommended Soldering Pad Layout F SG300Q F June G SG350 G July H SG350Q H August I SG400 I September J SG420 J October K SG420Q K November L SG450Q L December M SG500Q N SG600Q O SG200 © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BA.08/26/20

Gas Discharge Tubes SG Series Tape and Reel Dimensions (IEC 60286-3, dimension in mm) Part Numbering System and Ordering Information Tape Specifications SG xxx Q IEC 60286-3 Dimensions in mm seBct-iBon 5° Series Square GDT section A-A0.4±0.05 1.75±0.1 A 2±0.1 4±0.10 Ø1.55 ±0.05 Ø1.6 ±0.1 B79re50 a==k 79d50VVown Voltage 150 = 150V 4.9±0.15° +0.3120 5.5±0.1 B B 223303050000 ==== 223303050000VVVV 400 = 400V 3±0.1 R0.5 typical A 3.65±0.1 8±0.1 420 = 420V 450 = 450V (Not available without “Q” suffix) SMD-Tape has to withstand 500 = 500V (Not available without “Q” suffix) a minimum Force of F > 20 N / pocket 600 = 600V (Not available without “Q” suffix) 2 Kg / pocket Device Option Code minimum vertical load (minimum checking (Blank) = Standard device quantity:10 pockets) Q = Quick Response Version (300V, 350V, 420V, 450V, 500V, 600V only) Packaging Reel Specifications Part Number and Device Type Quantity and Packaging Description IEC 60286-3 Dimensions in mm SGxxx Surface mount 2000pcs/reel in tape and reel 1.5 min. min. 12.8 min. min. max. 20.2 R0.75 Ø100 Ø330 18.4 max. 12.4 +2/-0 11.9 min. 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. © 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: BA.08/26/20