1.2GHz Signal Line Protection Solution
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1.2GHz Signal Line Protection Solution

Views: 0     Author: Site Editor     Publish Time: 2023-12-04      Origin: Site

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Plan Description

This solution is used on high-speed signal lines. Because the line frequency is very high, parasitic capacitance must be carefully considered.

The solution adopts secondary protection, common mode and differential mode full protection. The first level uses gas discharge tube 3R090L-8 for rough protection. The gas discharge tube has the characteristics of strong surge absorption ability and low parasitic capacitance, generally less than 2pf. The second level of protection uses ESD devices, ESDLC5V0D3B for fine protection. It has the characteristics of accurate clamping voltage and low parasitic capacitance, with a maximum of 0.8pf. The intermediate coupling uses PPTC SMD1206-012, which can also prevent overcurrent.

 

 Standards compliant:

IEC61000-4-5  10/700US 6KV /150A

IEC61000-4-2  CONTACT DISCHARGE:8KV  AIR DISCHARGE:15KV

1

 

If you only do anti-static, there is no need to use the air release tube and PPTC.

Three ESDLC5V0D3B common mode and differential mode full protection, customers can only provide common mode or differential mode protection according to needs.

 

Part number

DC

spark-over

voltage

Impulse

spark-over

voltage

Impulse

discharge

current

Impulse

discharge

current

AC

discharge

current

Insulation

resistance

Capacitance
100V/s 1KV/μs

10/1000μs

300times

8/20μs

10times

50Hz,1s

5times

Test voltage

1M Hz

V V A KA A V pF
3Rx090L/6 90±20% 700 100 5 10 50 1 2.0

 

Part number Vmax(dc) Imax(A)

Ihold

@25℃

(A)

Itrip

@25℃

(A)

Pd

Max

(W)

Max Time

to trip

Resistance

Current

(A)

Time

(Sec)

R1min

(Ω)

R1max

(Ω)

SMD1206-012 60.0 100 0.125 0.29 0.6 1.0 0.20 1.500 14.00

 

Part number VR IR VBR IT IPP PPK C Package
ESDLC5V0D3B 5V 1μA 6.2V 1mA 24 350W 0.4Pf SOD323

 

 

 

 

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