2RD-8 SMD Type 8mmX6mm 2 Electrode 20KA Surge Arrester Gas
Discharge Tube GDT for Power Supplies
Description of 2RD-8 SMD Type 8mmX6mm 2 Electrode 20KA Surge Arrester Gas
Discharge Tube GDT
GDT is placed in front of, and in parallel with, sensitive telecom
equipment such as power lines, communication lines, signal lines
and data transmission lines to help protect them from damage caused
by transient surge voltages that may result from lightning strikes
and equipment switching operations. These devices do not influence
the signal in normal operation. However, in the event of an
overvoltage surge, such as a lightning strike, the GDT switches to
a low impedance state and diverts the energy away from the
sensitive equipment.
Our GDT offer a high level of surge protection, a broad voltage
range, low capacitance, and many form factors including new surface
mount devices, which makes them suitable for applications such as
Main Distribution Frame (MDF) modules, high data-rate telecom
applications (e.g. ADSL, VDSL), and surge protection on power
lines. Their low capacitance also results in less signal
distortion. When used in a coordinated circuit protection solution
with PolySwitch devices, they can help equipment manufacturers meet
stringent safety regulatory standards.
Features of 2RD-8 SMD Type 8mmX6mm 2 Electrode 20KA Surge Arrester Gas
Discharge Tube GDT
• Excellent response to fast rising transients
• Stable breakdown voltage
• GHz working frequency
• 8/20μs Impulse current capability: 20KA
• Non-Radioactive
• Ultra Low capacitance (<1.5pF)
• Lead-free compliant
• RoHS and REACH compliant
• UL 497B Recognized: E465335
• Size: Ф8mm*6mm
• Storage and operational temperature: -40~+90°C
Application of 2RD-8 SMD Type 8mmX6mm 2 Electrode 20KA Surge Arrester Gas
Discharge Tube GDT
• MDF modules
• xDSL equipment
• RF systems
• Antenna
• Base stations
• Repeaters, Modems
•Telephone Interface, Line cards
• Data communication equipment
• Line test equipment
• Power supplies
• Surge protectors, Alarm systems
Electrical Characteristics of 2RD-8 SMD Type 8mmX6mm 2 Electrode 20KA Surge Arrester Gas
Discharge Tube GDT
| Part Number | DC
Spark-over Voltage 1) 2) @100V/S | Impulse Spark-over Voltage | Insulation Resistance
3) | Capacitance @1MHz | Life Ratings |
| Impulse Discharge Current @8/20μS | AC Discharge Current @50Hz 1S | Impulse Life @10/1000μS 100A |
| 100V/μS | 1KV/μS |
| Max | Max | Min | Max | Nominal
±5 times | Max 1 time | Nominal 5 times | Min |
| DIP | SMD | V | V | V | GΩ | pF | KA | KA | A | Times |
| 2R075TD-8 | 2R075SD-8 | 75±20% | 500 | 600 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R090TD-8 | 2R090SD-8 | 90±20% | 500 | 600 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R150TD-8 | 2R150SD-8 | 150±20% | 500 | 600 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R230TD-8 | 2R230SD-8 | 230±20% | 600 | 700 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R250TD-8 | 2R250SD-8 | 250±20% | 600 | 700 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R300TD-8 | 2R300SD-8 | 300±20% | 750 | 850 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R350TD-8 | 2R350SD-8 | 350±20% | 800 | 900 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R420TD-8 | 2R420SD-8 | 420±20% | 900 | 1000 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R470TD-8 | 2R470SD-8 | 470±20% | 900 | 1100 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R600TD-8 | 2R600SD-8 | 600±20% | 1000 | 1200 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| 2R800TD-8 | 2R800SD-8 | 800±20% | 1400 | 1600 | 1 | 1.5 | 20 | 25 | 20 | 300 |
| Glow Voltage at 10mA ~60V |
| Arc Voltage at
1A...............................................................................
~10V |
| Glow to Arc transition Current ~1.0A |
Weight…………………………………………………………………...... DIP ~1.7g
SMD ~1.25g |
| Operation and storage temperature……………………………………. -40~+90°C |
| Climatic category (IEC 60068-1)……………………………………….. 40/90/21 |
Packaging Quantity:
1,00 PCS per Plastic Tray
5 Plastic Trays per inner box
500 PCS per inner box
Packaging Quantity:
500 PCS per reel (13")
3 reels per inner box
1 ,500 PCS per inner box
| Wave Soldering Condition | Pb-Free assembly |
| Preheat | Temperature Min | 100°C |
| Temperature Max | 150°C |
| Time (Min to Max) | 60-180 Seconds |
| Solder Pot Temperature | 280°C Max |
| Solder Dwell Time | 2-5 Seconds |
Soldering Parameters - Reflow Soldering (Surface Mount Devices)
| Reflow Condition | Pb - Free assembly |
| Preheat | -Temperature Min (Ts(min)) | 150°C |
| -Temperature Max (Ts(max)) | 200°C |
| - Time (min to max) (ts) | 60 -180 Seconds |
| Average ramp up rate ( Liquids Temp TL) to peak | 3°C/second max |
| TS(max) to TL - Ramp-up Rate | 5°C/second max |
| Reflow | - Temperature (TL) (Liquids) | 217°C |
| - Time (min to max) (ts) | 60 -150 Seconds |
| Peak Temperature (TP) | 260 +0/-5°C |
| Time within 5°C of actual peak Temperature (tp) | 10 - 30 Seconds |
| Ramp-down Rate | 6°C/second max |
| Time 25°C to peak Temperature (TP) | 8 minutes Max |
| Do not exceed | 260°C |
