20KA Gas Discharge Tubes GDT 3RD-8 Series Surge Protector Arrester 75V-800V Arrestor DIP and SMD Circuit Protection Components

Description of 3RD-8 Series Gas Discharge Tubes 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.

Electrical Symbol of 20KA Gas Discharge Tubes GDT

Features of 75V-800V Arrestor Gas Discharge Tubes

• 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)
• High insulation resistance
• Lead-free compliant
• RoHS and REACH compliant
• UL 497B Recognized: E465335
• Size: Ф8mm*10mm
• Storage and operational temperature: -40~+90°C

Applications of DIP and SMD Gas Discharge Tubes

• Communication equipment
• CATV equipment
• Data lines
• Power supplies
• Telecom SLIC protection
• Broadband equipment

• ADSL equipment, including ADSL2+
• XDSL equipment
• Satellite and CATV equipment
• Test equipment
• Consumer electronics

Electrical Characteristics of 3RD-8 Series GDT 20KA Gas Discharge Tubes

Soldering Parameters - Wave soldering (Thru-Hole Devices)

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

Pre Heat

-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