Model CCblue has integrated input coil, feedback coil, and heater. Input and feedback coil are inductively coupled to the SQUID.

The glassfiber reinforced plastic package has dimensions of 13×7.5×2 mm (L×W×H). On top are four pairs of solder terminals with metal wire bond connections to the SQUID: one pair for the SQUID output, one pair for the feedback coil, one for the heater resistor, and one pair is serves as spare for further development. The resistor allows an easy expelling of frozen flux in the SQUID loop and input circuit.

A summary of the main parameters:  

Characteristics
Size of superconductive shielding in mm	24×ø10
Input inductance in nH	300
mutual inductance input coil-SQUID MIN in nH	2.5
mutual inductance feedback coil-SQUID MFB in pH	150
current noise better than, in pA/Hz1/2	4