SGD Family
STN Series
The STN Series is a multifunctional overvoltage protection component designed for secondary protection and ESD protection on PHY Side (L-L) in networking applications. Below is a detailed introduction to the STN Series.

Series Features
Easy to solder
The STN Series was developed with SGD packaging technology to meet strong soldering demands in networking applications, offering 20% better solderability than other products of the same size.
High current capability
To meet higher current demands in networking, the STN Series uses SGD packaging, delivering 20% more current capacity than typical products of the same size.
Product Features
Size: 0402in
Operating Voltage: 5V
ESD Capability: 15KV ~ 30KV
Capacitance: 0.8pF ~ 0.15pF
Operating Temperature: -55°C ~ 125°C
Compliant with IEC61000-4-2
Surge Current: 7A ~ 15A
Series Advantages
Easy to solder, Low capacitance, High energy tolerance
Easy to solder
SGD packaging offers compatibility with standard resistor/capacitor/inductor sizes and improves solderability over DFN packages.
Low Capacitance
Capacitance values under 1.5pF suitable for circuit design.
High Energy Tolerance
Delivers twice the 8/20μs energy rating compared to similar products.
Product Specifications
Part Number | Reverse Working Voltage | Parasitic Capacitance | ESD Ability | Clamping Voltage | Peak Pulse Power | Peak Pulse Current |
---|---|---|---|---|---|---|
Symbol | VRWM(max.) | CESD(1MHz)(typ.) | VESD(contact) | VCL(VESD 8KV)(max.) | PPK(8/20us) | IPP(8/20us) |
0402TN050-0R8A-11 | 5.0V | 0.8pF | ±30KV | 13V | 100W | 7A |
0402TN050-1R5A-11 | 5.0V | 1.5pF | ±30KV | 12V | 300W | 15A |
Application Scenarios
Wireless Base Stations (Outdoor AP, 5G Stations)
Outdoor AP, 5G Stations
Outdoor Access Point (Outdoor AP): Outdoor APs face risks from lightning and large power surges. Overvoltage protection devices prevent such external voltage spikes from damaging the equipment, ensuring stable antenna and data transmission system operation, and maintaining wireless signal coverage and stability.
5G Base Station: As a core part of next-generation high-speed networks, 5G base stations must be protected from overvoltage and transient voltage damage. Overvoltage protection devices safeguard RF modules, data processors, and antenna ports, ensuring reliable operation and high-quality signal transmission.
5G Base Station: As a core part of next-generation high-speed networks, 5G base stations must be protected from overvoltage and transient voltage damage. Overvoltage protection devices safeguard RF modules, data processors, and antenna ports, ensuring reliable operation and high-quality signal transmission.
IP Camera
Outdoor IP cameras face threats from harsh weather and external voltage fluctuations. Overvoltage protection devices prevent internal circuit damage from lightning strikes, voltage transients, or ESD, ensuring system stability and long-term durability.
Switch、Gateway、Modem
Industrial network equipment (such as switches, gateways, and modems) often operate in high-voltage environments and face risks from power surges or external lightning strikes. Overvoltage protection devices prevent these voltage spikes from damaging internal circuits, ensuring stable data transmission and avoiding communication failures.
IPTV/STB
IPTV Devices: These internet-based digital TV receivers face risks from power grid surges and lightning. Overvoltage protection devices shield the IPTV receivers, ensuring stable signal reception, clear playback, and extended device lifespan.
Set-Top Box (STB): Acting as a bridge between TV and network, STBs face voltage fluctuation risks from both sources. Overvoltage protection devices prevent damage, ensuring stable video transmission and a reliable viewing experience.
Set-Top Box (STB): Acting as a bridge between TV and network, STBs face voltage fluctuation risks from both sources. Overvoltage protection devices prevent damage, ensuring stable video transmission and a reliable viewing experience.