1. Department of Physics, University of Michigan
SNAP NIR Detector Packaging Development: Towards a Universal SiC Detector Package
Bruce C. Bigelow
Department of Physics, University of Michigan
20 July 2005

2. SiC NIR Package Design Issues
Neither NIR device vendor is producing a package we want to use for SNAP
SiC is currently favored for SNAP focal plane components
It would be useful to have a NIR package design that can accommodate either RSC or RVS detectors
These designs shown here have the center of the Rockwell sensor area located at the center of the Raytheon sensor area.
7/21/05
B. C. Bigelow -- UM Physics

3. Current Rockwell Package Design
Rockwell PGA PCB presents wire-bonding pads for connector on front side of mother-board
7/21/05
B. C. Bigelow -- UM Physics

4. Current Rockwell Package Design
H2RG package and mounting details
7/21/05
B. C. Bigelow -- UM Physics

5. Current RVS Package Dimensions
Raytheon PCB presents wire-bonding pads for connector on back side of mother-board
7/21/05
B. C. Bigelow -- UM Physics

6. B. C. Bigelow -- UM Physics
Current RVS Package
Raytheon Proprietary / Competition Sensitive
7/21/05
B. C. Bigelow -- UM Physics

7. Rockwell device on universal package
Wire-bonds attach green PCB to front side of magenta mother board.
Rockwell device is undersized for the SNAP focal plane detector pitch
7/21/05
B. C. Bigelow -- UM Physics

8. Raytheon device on universal package
Wire-bonds attach green PCB to back side of magenta mother board.
Raytheon device is well sized for the SNAP focal plane detector pitch
7/21/05
B. C. Bigelow -- UM Physics

9. Common SiC package design
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B. C. Bigelow -- UM Physics

10. B. C. Bigelow -- UM Physics
Conclusions
A conceptual design for a SiC NIR detector package that could accommodate either Rockwell or Raytheon detectors, and meets all of the current SNAP requirements, has been presented.
Pending review of the quotation drawings, requests for quotations for fabrication of the package will be sent out, and prototype parts will be ordered from at least one vendor
7/21/05
B. C. Bigelow -- UM Physics