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Flexible Cryogenic Coaxial Cable

THE RIGHT CABLE IS THE KEY

At the elspec group, we know what requirements are placed on cryogenic cables. A hardness test/acid test for cables at very low temperatures shall be performed. It is important that this low heat is transported. With the new cryogenic coaxial cable from us, you are equipped for these extreme conditions.

Standard Copper Cable

Copper cables
Non-magnetic
High flexibility

Optimized Cable

Relative signal attenuation
Low heat conduction
Can be used in the range of 40m Kelvin
With a bandwidth of up to 40 GHz

The 1070551 from elspec with a SMPM connector is used as a flexible connection cable for probes in this area, e. g. For example, at STM Head mKelvin up to 4 Kelvin. The problem with this cable is the limited frequency bandwidth of 3GHz. Our solution is that we have further developed the MK5005 cable in terms of flexibility and connector adaptation.

Datasheet

Standard flexible Coaxial Cables for cryogenic applications

Type	Diameter	Plastic	Metal	Non-Magnetic	Vacuum suitable	Max Frequency	Att @ 3 GHz
MMK5001	0,53 mm	PFA	Cu, Ag	✔	✔	3 GHz	9.8 dB/m
MK5005	0,52 mm	FEP	Cu, Ag	✔	✔	10 GHz	9.2 dB/m
MK5001	1,05 mm	PTFE, FEP	Cu, Ag	✔	✔	3 GHz	4.4 dB/m
STFLEX034 (in development / completion end of 2024)	0,93 mm	PFA, FEP	SS304, Ag	x	✔ low conductivity	50 GHz	3.6 dB/m
STFLEX047	1,36 mm	PTFE, FEP	SS304, Cu, Ag	x	✔	50 GHz	2.4 dB/m
STFLEX047 CRYO	1,36 mm	PTFE, FEP	SS304, Ag	x	✔	50 GHz	3.4 dB/m

For cryo applications where a very flexible cable is required, the subminiature coaxial cable MK5005 can be used, with a frequency bandwidth of 10GHz. It consists of silver-plated strands for the inner conductor as well as the shield and FEP as an insulator with an outer diameter of 0.52mm. Due to the material used and the small diameter, it is still relatively flexible even at low temperatures. The appropriate connector is a SNAP IN connector from the SMPM series.

Talk to us about your perfect coaxial cable.

Cryogenic cables for applications at very low temperatures

For the cable group MK5005 there is currently only the RF Connector SMPmini in the design Right Angle Female.

We recommend the adapter order no 18175 (2.92mm female to SMPmini male) to measure the cable PLUS the VNA test cable order no21481 (Duartest150 2.92 male 2.92 male 1meter).

SMPm26: SMPmini Rigth Angle Jack

MK5005: subminiature cablefor room temperature -40°C to 85°C

MK5005CRYO: pre-aged subminiature cable for cryogenic temperature (mK) milliKelvin

Recommended Standard Products - on stock NOW -

Type	Art. No.	MOQ	Request
MK5005 CRYO	20984	at 50meters	Send request
MK5005CRYO-SMPm26-SMPm26-0150 ( -> 150 mm length)	21843	at 5 piece	Send request
MK5005CRYO-SMPm26-SMPm26-0250 ( -> 250 mm length)	21056	at 5 piece	Send request
MK5005CRYO-SMPm26-SMPm26-0500 ( -> 500 mm length)	22176	at 5 pieces	Send request
Adapter 2.92mm female auf SMPMini Male	18175	at 5 pieces	Send request
VNA Test Cable	21481	at 5 pieces	Send request