SPDIF

RCA to Mono 3.5mm Mini Plug S/PDIF Digital Audio Cable using Belden 1505F Cable. 

This cable works as a Digital or Analog Audio cable

It uses a very high quality 3.5mm (1/8") mono mini phone plug connector and a very high quality RCA connector. This is the Ultimate Digital Audio cable for computers and small audio devices that use the 3.5mm jack for S/PDIF digital audio. It uses true 75 ohm Belden high quality cable for the most pristine digital audio signal. 

*Note: Please check the specifications of your motherboard/sound card/digital audio device to be sure that it supports "Coax" S/PDIF and not just "Optical" S/PDIF. An optical signal will not work with this cable.

Cable Features and Specifications:

Coax - RG-59/U Type
22 AWG stranded (7x29) .031" bare compacted copper conductor, gas-injected foam HDPE insulation, tinned copper/bare copper double braid shield (95% coverage), PVC jacket.

Mechanical Characteristics (Overall): 
• Operating Temperature Range: -35°C To +75°C 
• UL Temperature Rating: 75°C 
• Bulk Cable Weight: 40 lbs/1000 ft. 
• Max. Recommended Pulling Tension: 90 lbs. 
• Min. Bend Radius (Install)/Minor Axis: 2.400 in.

Electrical Characteristics (Overall)
Nom. Characteristic Impedance:
Impedance (Ohm)
75
Nom. Inductance:
Inductance (uH/ft)
0.094
Nom. Capacitance Conductor to Shield:
Capacitance (pF/ft)
17.0
Nominal Velocity of Propagation:
VP (%)
80
Nominal Delay:
Delay (ns/ft)
1.3
Nom. Conductor DC Resistance:
DCR @ 20°C (Ohm/1000 ft)
12.2
Nominal Outer Shield DC Resistance:
DCR @ 20°C (Ohm/1000 ft)
2.4

Frequency (MHz) Nom. Attenuation 
(dB/100ft.)
1 0.2
3.6 0.5
5 0.6
7 0.73
10 0.9
67.5 2.4
71.5 2.5
88.5 2.8