Parts List

The following table lists the parts required for one amplifier.

LNA Parts List
QTY Description Manufacturer or Supplier Price
Each
Total
Price
1 QMMIC Chip JPL 1800.00 800.00
Pair Transition circuits Speedy Circuits 250.00 50.00
1 DC bias circuit board AP Circuits 50.00 50.00
1 Amplifier Housing any machine shop3 150.00 150.00
1 Top lid any machine shop 45.00 45.00
1 Bottom Lid any machine shop 45.00 45.00
2 SMA connectors 142-1701-201 Johnson Components 6.20 12.40
1 8 pin female connector HR25-7TR-8S Hirose 10.30 10.30
1 8 pin male connector HR25-7TP-8P Hirose 13.56 13.56
6 DC Feed Throughs MP-2625 Metal Processing4 2.85 17.10
6 100 pF Capacitors 111UF101K100TT American Technical Ceramics 1.68 10.08
6 0.1 uF Capacitors 0805X7R104ML2AB0C5 American Technical Ceramics 0.50 3.00
6 LEDs Digikey 0.50 3.00
Total: $1,200.00

Other required tools and supplies include

For the breakout box, the following parts will be needed:


1 This price is fairly arbitrary. It was assumed that 25 amplifiers will be used from a $20,000 fabrication run.

2 This price assumes that 50 transition pairs will be used from a $2,500 fabrication run.

3 The DC bias connector uses a non-standard metric thread size. The Caltech Submillimeter Wave Astrophysics group has 2 custom-made taps to cut these threads.

4 Metal Processing Co., Inc.
75 Westech Dr.
Tyngsboro, MA 01879-2717
Phone (978)649-1289
FAX (978)649-2955

5 The 0.1 uF capacitors need to be tested at cryogenic temperatures to determine their cold capacitance value and to find out if they can survive repeated temperature cycling.