Coaxial splitter

1. Summary

As the development of modern electronics, more and more people have applied SiC / GaN power component in different specific field. Engineers will always need to measure the power circuit with above hundreds kHz of frequency and tens ampere of current. The traditional high frequency current probe (such as our HCP8000 series) containing iron core and shielding layer will suffer large loss and heating under high frequency current (Please refer to the current frequency derating curve from the HCP8000 series instruction manual.) As a result,the  expensive probe will be broken during measurement.

Coaxial current shunt, on the other hand, is pure resistor structure and can remain low loss even under high frequency current , making it a very good choice for your high frequency current testing. Our latest Ultrafast coaxial current shunt is divided into two types based on connection method:

1. Wire type: CSD***B series coaxial shunt is soldered onto the circuit board through two pins.

2. Bolt type: CSD***M series coaxial shunt is fixed on the circuit board with bolts and nuts.

Comparing with the wire type CSD***B series coaxial shunt, the bolt type CSD***M series can be assembled and disassembled easily. Users only need to plug it in the holes on a PCB and tighten a nut. Comparing to the wire type design, this bolt type coaxial current shunt can be installed and uninstalled conveniently multiple times by the users.

The bolt fixing mechanical structure of the CSD***M series adopts a new high reliability design, which can lower the possibility for the users to break the inner structure of the coaxial shunt by over tightening the bolt.

Model	CSD005B10 CSD005M10	CSD01B20CSD01M20	CSD02B20 CSD02M20	CSD050B12 CSD050M12	CSD100B06 CSD100M06
Resistance	0.005Ω	0.01Ω	0.02Ω	0.05Ω	0.1Ω
Bandwidth (-3dB)	1GHz	2GHz	2GHz	1.2GHz	600MHz
Rise time	≤350ps	≤175ps	≤175ps	≤300ps	≤600ps
Maximum continuous power	2W
Temperature coefficient of resistance/℃	±40ppm
weight	16g			26g
Maximum pulse energy that can be sustained	5J	4J	4J	6J	8J
coaxial shunt diameter	10.5mm
coaxial shunt length	43.5mm			59.5mm
Wire type input pin size	Diameter 2mm/Length 15mm
Bolt type input bolt size	Bolt diameter M3/length10mm
PCB copper foil with bolt type contact	10.5mm diameter conductive ring
Signal output connector	BNC
Maximum torque of fixed nut	0.5 N* m

Type  Number	CSD005A	CSD01A	CSD02A	CSD050A	CSD100A
Resistance	0.005Ω	0.01Ω	0.02Ω	0.05Ω	0.1Ω
Bandwidth(-3dB)	400MHz	400MHz	1.2GHz	2GHz	2GHz
Rise time	≤875PS	≤875PS	≤291PS	≤175PS	≤175PS
Maximum continuous power	2W	2W	2W	2W	2W
Temperature coefficient of resistance/℃	±40ppm	±40ppm	±40ppm	±40ppm	±40ppm
Body weight	16g	16g	16g	26g	26g
Maximum pulse energy it can withstand	5J	4J	3J	2J	1J

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