SPECIFICATIONS.docx
DOCX document 3 MB Posted
- Solicitation number
- 142082-26-0410
About this file
This is a technical specifications document for the fabrication and population of Printed Circuit Boards (PCBs) for a dither circuit used in the NEXRAD WSR-88D receiver cabinet operated by the National Weather Service Radar Operations Center (ROC) in Norman, Oklahoma.
The PCB specifications detail a 4-layer board measuring 47.625 mm by 95.25 mm with 1.575 mm thickness, constructed from FR4 material with 150 Tg minimum rating. The board features 1 oz. outer copper weight, blue solder mask and white silkscreen on both sides, ENIG finish, and requires IPC A-600 Class 2 inspection standards. Environmental operating parameters range from 10°C to 35°C with 20-80% humidity, with non-operating temperature limits of -35°C to +60°C and altitude capability up to 3,300 meters above mean sea level. The scope of work comprises two CLINs: CLIN 0001 requires delivery of one first article unit built to specification, and CLIN 0002 requires fabrication and delivery of 220 production units. The contractor's responsibilities include obtaining and using provided Gerber files to fabricate the PCB, procuring all components listed on the Bill of Materials, populating the boards with those components, and delivering the assembled units to NWS at 1200 Westheimer Drive, Norman, Oklahoma 73069. The contract award will be made on a firm fixed price basis to the responsive responsible quoter providing best value, and all contractors must be registered in the System for Award Management (SAM) prior to award.
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Other files
| File | Type | Posted |
|---|---|---|
| 1305M226Q0145.pdf | ||
| Dither Circuit PCB BOM.xlsx | XLSX spreadsheet | |
| Dither Circuit Schematic.pdf |
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SPECIFICATIONS
Dither Circuit PCB
1.0 REQUIREMENT
The National Weather Service (NWS) Radar Operations Center (ROC) has a requirement to fabricate and populate Printed Circuit Boards (PCBs) for a dither circuit. Pictures of the unpopulated front and back of the PCB can be seen in Figures 1 and 2, respectively. Pictures of the populated front and back of the PCB can be seen in Figures 3 and 4, respectively. This dither circuit will be used in the NEXRAD WSR-88D receiver cabinet.
Environmental specs:
Operating Temperature: +10ºC (+50°F) TO +35ºC (+95°F) Non-Operating Temperature: -35ºC (-31°F) TO +60ºC (+140°F) Operating Humidity: 20% TO 80% Non-Operating Humidity: 15% TO 95% Altitude: Up To 3300 Meters Above Mean Sea Level
PCB parameters:
Layers: 4 Outer Copper Weight: 1 oz.
Metric: Yes Length: 47.625 mm Width: 95.25 mm Thickness: 1.575 mm Trace / Space Outer: 0.152 - 0.229 mm Trace Inner: 0.152 - 0.229 mm Material: FR4 150 Tg (minimum) Solder Mask Sides: Both Solder Mask Color: Blue Silkscreen Sides: Both Silkscreen Color: White Silkscreen Clipping: Yes
Finish: ENIG Plated Edges: No Plated Slots: 0 Plated Cutouts: 0 Non-Plated Slots / Cutouts: 03 Smallest Drilled Hole: 15 mils Countersink Count: 0 Counterbore Count: 0 Castellated Holes: No Controlled depth Milling: No Selective Plating: No
Inspection: IPC A 600 Class 2 Cross Section: No Controlled Impedance: None Blind / Buried Vias: No Via Plug: No Lot Code: No Cage Code: Yes UL Certification: No Serialization: Yes Export Controlled (EAR/ITAR): No
2.0 SCOPE OF WORK
CLIN 0001 and CLIN 0002:
The contractor shall perform the following:
· Take the provided Gerber files and fabricate the Printed Circuit Board
· Purchase the components on the Bill of Materials
· Populate the Printed Circuit Board with the components from the Bill of Materials
· Send the assembled PCBs to the ROC
The BOM, schematic, gerber PDF files, and pictures of the PCB are included in this document. The actual gerber files will be provided after award.
Figure 1
Figure 2
Figure 3
Figure 4
3.0 DELIVERABLES
- CLIN 0001: Dither Circuit First Article built to spec based on attached drawings Quantity 1
- CLIN 0002: Dither Circuit Production Units Quantity 220
Delivery Address:
NWS
Tammy Buie 1200 Westheimer Drive Norman, OK 73069 image1.png image2.png image3.png image4.png
File details come from the government source that posted it. Updated .