Parts Requirements

1

• Parts Requirements
• Preliminary Design Review
• Jorg Fischer
• University of California - Berkeley

2
Overview

• Parts Materials Overview
• Requirements
• Parts Quantities Quick Overview
• Parts List
• Data Bases, Lists
• Parts, Long-Lead Items

3
Requirements

• GSFC 311-INST-001
• Instructions for EEE Parts Selection, Screening,
  Qualification
• Minimum EEE Parts Criteria for Level 3 Moderate
  level of risk, as permitted by cost constrains
• Parts in compliance with 311-INST-001, Level 3
  (Grade 3) requirements and Standard parts
• Use of GSFC PPL 21 (GSFC Preferred Parts List),
  design permitting
• Particle Impact Noise Detection (PIND), per
  MIL-STD-750 and MIL-STD883, required for cavity
  devises
• Impose on manufacture, if possible
• When needed, have DESC approved test facility
  perform testing
• Customer Source Inspection (CSI) and/or
  Destructive Physical Analysis (DPA) for complex
  or known problem devices

4
Requirements

• 
  
  (continued)
• Non-standard EEE parts will require at a minimum
  
• Plastic Encapsulated Microcircuits (PEM)
  Selection, Screening, and Qualification
  (NASA/TP-2003-212244, PEM-INST-001)
• DPA, Preconditioning, Highly Accelerated Stress
  Test (HAST), and CSAM (Center for Surface
  Analysis of Materials) Testing
• Radiation Testing
• Total Ionizing Dose (TID) Requirement is 66Krads
  (si)
• - Review existing test data from GSFC,
  JPL, and manufacturer
• - Review NASA where used historical
  data
• Parts can be used, if data and or orbit
  requirements equal or exceed
• THEMIS requirements
• Cobalt 60, TID testing will be performed as
  needed
• Single Event Effects (SEE) use existing data or
  historical use (similarity)
• - Whenever possible designers will use
  latchup immune devices

5
Parts Material Quantities

• 
  Quick Overview
• SCM, EFI, BMD, BEB, DFB, FGE/PCB, DCB/ETC,
• LVPS, SST, ESA, Backplane
• 5 Flight 1 Flight Spare

• EFI
• Preamps
• 6 Flight per SC 4 Flight Spares (40 Total)
• Spin Plane Boom (SPB)
• 4 Flight per SC 4 Flight Spares (28 Total)
• Axial Boom (AXB)
• 2 Flight 2 Flight Spares (14 Total)

6
EEE Parts List - I

• UCB/SSL QA will maintain an EEE Parts
• Identification List (PIL)
• The PIL will contain
• Manufacturers generic part number
• Military Part Number or SCD number
• Manufacturer(s)
• Where used (unique assembly) / Quantity
• Quantity used
• Quantity ordered
• Lot/Date Code
• Radiation Status (TID/SEL)
• Alert Status
• Comments

7
EEE Parts List II

• 
  
  (continued)
• Parts will be procured to an approved Parts List.
• Schedule permitting, will procure common buy.
• Procurement of devices will be based upon design
  engineers confidence-of-use factor of 70.
• Unique, high-dollar items will be based on a
  90-100 confidence level.
• Minimum Attrition / Spares factor of 20-30 will
  be applied to flight procurement quantities.
  Non-standard devices will have more spares.
• Schedule and cost permitting, engineering test
  units (ETU) will use flight qualified parts,
  especially, where minimum buy quantities are
  imposed.
• ETU and Flight unit
• Procurement will run concurrently

8
EEE Parts List III

• 
  
  (continued)
• Flowdown Performance Assurance Implementation
• Plan (PAIP) requirements on subcontractors
• Parts Control Board (PCB)
• PCB members are Themis QA, Design Engineer, and
  Themis Project manager, or representative
• PCB shall review EEE part for
• Testing, Screening, and Qualification Failures
• Alerts (e.g., GIDEP)
• Review Non-Standard Parts Requirements

9
Data Bases Lists

• Material DB List is posted on Apollo

10
Data Bases Lists

• Data Base on FTP Apollo
• MS Excel DB, THM_All_Parts_Rev20.xls

11
Data Bases Lists

• Summary Parts Lists

• Individual Board Parts Lists

12
Long-Lead EEE Parts
1 Main List, 102 Active Parts, 11 TID,SEE Test
Parts
13
Long-Lead EEE Parts

• 
  (continued)
• Amptek
• A121, ESA, on order
• A225F, SST, pending
• A250F, ETC, pending
• Honeywell
• HX6228, SRAM, DFB, DCB, ETC, SST, on order
• 3. 3D-Plus
• PROMETHEE1, Preamp, SCM, on order
• PROMETHEE2, V-regulator, SCM, on order
• MMSD08256804S-C-1S, SRAM, DCB, on order