National Institute of Standards & Technology, Acquisition & Assistance Div., Bldg. 301, Rm B117, Gaithersburg, MD 20899

66 -- PHOTODIODES, INSB AND MATCHING TRANSIMPEDANCE PREAMPLIFIERS SOL 53SBNB760097 DUE 041097 POC Contract Specialist, Keith Kennedy, 301.975.6325, Contracting Officer, Sandra L. Febach, 301.975.6326 WEB: NIST Contracts Homepage, http://www.nist.gov/admin/od/contract/contract.htm. E-MAIL: NIST Contracts Office, Contract@nist.gov. The National Institute of Standards and Technology (NIST) intends to buy InSb Photodiodes and matching equivalent transimpedance preamplifiers on a sole source basis from EG&G Judson, Montgomeryville, PA. NIST justifies this sole source procurement in accordance with FAR 6.302-1, only one responsible source and no other type of equipment will satisfy NIST's needs. The description of this requirement is: Item 01 -- InSb photodiode, active size seven mm diameter, shunt impedance: greater than 25K, field of view: 17 degrees, Cold FOV aperture located greater than 50mm from detector surface using extended FOV riser (600955) and two inch dewar extension (600907). Dewar hold time: greater than 24 hours, window: plane parallel sapphire, Si temperature sensor, customer supplied cold filter mounted on extended FOV riser (600955). Customer supplied precision aperture mounted within 0.040" of detector surface, two customer-supplied sapphire window assemblies (180339) mounted on 2" dewar extension (600907).Third sapphire window assembly (130339) supplied by EG&G Judson, detector centered within +/- 2 mm of dewar optical axis defined as perpendicular center of mounting holes around window when cold, detector plane perpendicular to dewar axis +/- two degrees when cold, detector response nonuniformity less than one percent due to detector position variations relative to dewar axis when illuminated with 3-5 mm spot, detector capacitance measured and reported. J10D-M210S-R07M-17-APT-NIST. Three each. Item 02 -- InSb photodiode, active size seven mm diameter, shunt impedance: greater than 25 K, field of view: 17 degrees, cold FOV aperture located less than 8 mm from detector surface, dewar hold time: greater than 24 hours, window: plane parallel sapphire, Si temperature sensor, customer supplied cold filter to be mounted on FOV assembly, sapphire window assembly (130339) supplied by EG&G Judson mounted without dewar extension (6000907), detector centered within +/- 2 mm of dewar optical axis defined as perpendicular center of mounting holes around window when cold, detector plane perpendicular to dewar axis +/- two degrees when cold, detector response nonuniformity less than one per cent due to detector position variations relative to dewar axis when illuminated with 3-5 mm spot, 17 degrees FOV aperture diameter, dewar window thickness, detector-to-FOV aperture and FOV-to-window dimensions reported when cold, detector capacitance measured and reported. J10D-M210-R07M-17-NIST. Two each. Item 03 -- PA-7 equivalent transimpedance preamplifier matched with each of Item 01 and 02 mounted in enlarged M210 dewar terminal pin box with three customer specified switch selectable gain settings. Includes OPA627 op amp, 3dB bandwidth set to 400Hz, frequency response curve provided with each amplifier indicating partially or fully compensated frequency roll-off characteristics, includes detector output for use with customer supplied external transimpedance preamplifier. PA-7-INT. Five each. FOB Destination. Delivery of all items within 155 calendar days of contract award in one shipment. This is not a request for competitive quotes. However, interested parties may identify to the contracting officer their interest and capability to satisfy the Government's requirement within 15 days of this notice. A determination by the Government not to compete this proposed contract based upon responses to this notice is solely within the discretion of the Government. Information received will normally be considered solely for the purpose of determining whether to conduct a competitive procurement. See Numbered Note 26. (0084)

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