1 RS422 Port Protection Solution Use surface mount component HUAAN LIMITED ▼Solution1(RS422): Transmission requency:10MHZ Surge level: IEC61000-4-5 10/700us:4KV/100A 1.2/50us-8/20us: 4KV-1KA Specification................................................................................................................................................................................ DC Spark-over Voltage @ 100V/S Impulse Spark-over Voltage Surge Absorber V V JSE-301M-SMB 300±20% Part Number Vmax I max Ih Rmax PTC V A A JK-mSMD014 60 100 0.14 Part Number Insulation Resistance Impulse discharge current(8/20μs) Surge Life Test 10/700us Capacitance (1KHz) mΩ 10 Times 10times PF >100 1000A 4KV,100A ≤1 @1KV/μs ≤ 600 Rmin Pd Ω Ω w 6 0.65 0.8 Part Number Vbr Ir Vrwm Ipp 10/1000us Vc TVS V uA V A V SMBJ6.0CA 6.67-7.37 800 6 58.3 10.3 Package SMB Part Number VDRM @IDRM =5μA VS @100V/ IH IS IT V min V max mA min mA max 6 25 50 800 VT Capacitance impulse @IT=2.2Am @1MHz,2V withstand ps bias voltage A max Vmax pF 10/700us 2.2 4 70 4KV μs Package SIDACTor P008B SMB 2 RS422 Port Protection Solution Use DIP component HUAAN LIMITED ▼Solution 2(RS422): Transmission requency:10MHZ Surge level: IEC61000-4-5 10/700us:4KV/100A 1.2/50us-8/20us: 4KV-1KA Specifi cation................................................................................................................................................................................ DC Spark-over Voltage @ 100V/S Impulse Spark-over Voltage Surge Absorber V V JSE-301M-2643 300±20% Part Number Part Number PTC JK250120U Vmax Insulation Resistance Impulse discharge current(8/20μs) Surge Life Test 10/700us Capacitance (1KHz) mΩ 10 Times 10times PF >100 1000A 4KV,100A ≤1 @1KV/μs ≤ 600 I max Ih V A A 250 10 0.12 Rmax Rmin Pd Ω Ω w 11 6 0.8 Part Number Vbr Ir Vrwm Ipp 10/1000us Vc TVS V uA V A V P6KE6.8CA 6.45-7.14 1000 5.8 58.1 10.5 Package DO-15 Application product(RS422 Port ...etc): A friendly reminder: Any surface mount component and DIP component can alternative use, ( For example: JSE-301M-SMB = JSE-301M-2643 , JK250120U = JK-mSMD014 , P6KE6.8CA = SMBJ6.0CA) (So You can also use: JSE-301M-2643 + JK250120U + SMBJ6.0CA, JSE-301M-SMB+ JK250120U+ P6KE6.8CA ...ETC) Statement: These solution is only for reference, The final solution will be based on the actual test results, HUAAN LIMITED will have the right of final explanation. [email protected] 2 HUAAN LIMITED www.huaandz.com [email protected] Tel:+86-755-27465585