Views: 0 Author: Site Editor Publish Time: 2023-10-18 Origin: Site
BNC Video Interface Protection
DVI Interface Protection
TV side panel
Common mode diode protection (referring to the protection of equipment within 50 meters of the video coaxial cable from high-voltage lines or conductive media susceptible to direct lightning strikes)
Device model | packaging | Size mm | Junction capacitance. Typical value | ESD robustness (IEC61000-4-2) | note |
Dip D=6mm | 5.5*6.0 | 0.8PF | 2.5KA /8/20US | Inline gas discharge tube GDT note： A | |
4532/1812 | 4.5*3.2 | 0.6PF | 2KA /8/20US | SMD gas discharge tube GDT note： A | |
3016/1206 | 3.0*1.6 | IH：100mA |
| Polymeric positive temperature coefficient | |
SMB | 4.5*3.2 | 30PF | 80A | discharge tube |
1. GDT is Intex's ceramic gas discharge tube, which provides common-mode protection to ensure the protection of the front-end against instantaneous high voltage. It can handle the high surge voltage to about 90V, which is beneficial to the second processing.
2. PPTC refers to the self-restoring fuse provided by Yint Electronics. It can effectively prevent the induced current caused by lightning strikes or the current abnormality caused by the interface plugging process, and isolate and protect the back end. After the current abnormality ends, the self-restoring fuse will Return to normal work. The important point is that it can coordinate the action time of the first-stage gas discharge tube and the second-stage TVS, also known as: coupling protection.
3. Thristor is a fine protection. It completes secondary processing of the surge that has not been processed by the previous stage, so that the residual surge voltage is small enough to protect related circuits such as video decoding.
We provide ESD protection devices, both discrete and integrated, which can be easily laid out to protect DVI interfaces on common video product equipment. Such as: YC input, YPbPr, audio L/R, RGB, etc. For the A/V interface, we recommend the comprehensive solution ESDSRLC05-4 or ESD0524P.
Device model | packaging | Size mm | Junction capacitance. Typical value | ESD robustness (IEC61000-4-2) | note |
SOT-23-6L | 2.92*2.82*0.4 | 0.35 PF | C ：+ 12KV A：+ 17KV | LC low capacitance | |
DNF- 10-2.5- 1.0 | 2.5*1.0*0.6 | 0.35 PF | C ：+ 10KV A：+ 15KV |
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For designing VGA input interface PC video output, DVD, set-top box and other video equipment, these integrated devices.
The software combines ESD protection and synchronization signal buffering features, our recommendation is ESDSRLC05-4 or ESD5V0D8.
Device model | packaging | Size mm | Junction capacitance. Typical value | ESD robustness (IEC61000-4-2) | note |
SOT-23-6L | 2.92*2.82*0.4 | 0.35 PF | C ：+ 12KV A：+ 17KV | LC low capacitance | |
SOD－882 | 1.0*0.6*0.5 | 0.35 PF | C ：+ 10KV A：+ 10KV | SOD－882 |
