Forensic Intelligence Report: Core Assembly Vetting
01
Dual-Channel Double-Ended MHV Architecture
Manufactured by MDC Precision / Insulator Seal Inc. (ISI) under Part Number 9222007 (Drawing Ref: 0192804), this high-density coaxial feedthrough incorporates two independent Miniature High Voltage (MHV) channels onto a single 2.75" ConFlat flange. Featuring a double-ended configuration with grounded outer shields, it accepts standard MHV bayonet cable plugs on both the atmospheric and vacuum sides, eliminating in-vacuum wire soldering or loose ceramic-bead insulation.
02
High-Purity Alumina Dielectric & Grounded Shield Isolation
Vacuum-brazed high-purity alumina ceramic (>94% Al2O3) insulators provide superior dielectric isolation (≥ 1010 Ω @ 500 VDC) and high surface creepage resistance. The outer coaxial metallic shield is grounded directly to the 304 stainless steel flange body, ensuring continuous 360° electromagnetic interference (EMI) shielding for sensitive signal biasing up to 5,000 V DC.
03
Forensic Inspection Audit: Audited NOS / Open Box (Tier 1.5 Unissued Asset)
Certified in zero-hour, uncommissioned Audited NOS / Open Box condition. High-resolution 10× optical auditing confirms factory-sharp 2.75" CF knife-edges (DN40CF) with zero gasket witness marks, pristine crack-free alumina ceramic insulators, perfectly straight gold/nickel-plated center conductor pins, smooth double-ended MHV bayonet locking lugs, zero thermal history, and certified UHV helium leak tightness down to ≤ 1 × 10-10 atm-cc/sec.
Forensic Component Matrix & Value Verification
| Technical Inspection Parameter | Our Store Asset (Audited NOS / Open Box) | Standard Secondary Surplus (Raw / Unvetted) |
|---|---|---|
| 2.75" CF Knife-Edges | Factory-Sharp & Unswaged (Zero gasket witness marks) | Concentric copper witness tracks, edge nicks, leak risk |
| Ceramic Dielectric | High-Purity Alumina (>94% Al2O3) w/ Zero Micro-Crazing | Micro-fractures, carbon tracking, dielectric breakdown |
| Center Contacts | Straight Gold/Nickel-Plated Conductor Pins | Arced/pitted pins, loose sockets, bent contact tips |
| Bayonet Couplings | Positive-Locking Double-Ended Bayonet Shells | Loose, stripped, or missing bayonet lugs |
| Cleanliness Standard | Solvent-Wiped & Cleanroom Vetted | Atmospheric oxidation, solder residue, shop dust |
⚙️ Operational Directives & Integration Protocol
Commissioning Protocol: Mount onto a standard 2.75" CF chamber port using a fresh 2.75" OFHC copper gasket. Tighten six 5/16"-24 stainless steel bolts in an alternating star pattern to achieve uniform copper crush. Fasten matching MHV coaxial cable connectors to the bayonet interfaces on air and vacuum sides.
Thermal Management: Disconnect external air-side coaxial cables and polymer components prior to executing system bakeouts up to 450 °C (the unpopulated brazed assembly withstands high-temperature UHV bakeout cycles up to 450 °C).
Thermal Management: Disconnect external air-side coaxial cables and polymer components prior to executing system bakeouts up to 450 °C (the unpopulated brazed assembly withstands high-temperature UHV bakeout cycles up to 450 °C).
Manufacturer (OEM)MDC Precision / ISI
Model / Part Number9222007 (Drawing: 0192804)
Mounting Interface2.75" ConFlat Flange (DN40CF / 2.73" OD)
Connector StandardMHV Coaxial (Miniature High Voltage)
Conductor Pin Count2 Pins (Dual Coaxial Channels)
End ConfigurationDouble-Ended (Air & Vacuum Bayonets)
Shield / GroundingGrounded Shield (Body Grounded)
Voltage Rating (DC)5,000 V DC (5 kV DC Max)
Current Rating / Pin3.0 Amperes Continuous (3A)
Helium Leak Rate≤ 1 × 10-10 atm-cc/sec
Vacuum Limit≤ 1 × 10-10 Torr (UHV)
Condition StandardAudited NOS (Tier 1.5) — Unissued Open Box
Hardware Status Matrix
Tier 1.5: Audited NOS
Unissued. Zero-Hour Open Box.
✔ CURRENT STATUS
Tier 2: Refurbished
Performance Vetted.
Not Applicable
Tier 3: Audited Used
Mechanically Vetted.
Not Applicable
BLUE DIAMOND PROTECTION PROTOCOL: ACTIVE
TOP RATED PROTECTION: This forensically audited MDC/ISI 9222007 dual-pin MHV double-ended feedthrough qualifies for our Free 30-Day Domestic Returns policy. Per corporate seller protection guidelines for Top Rated Plus members, returning the item with damaged 2.75" CF knife-edges, arced conductor contacts, cracked alumina ceramic insulators, or damaged bayonet hardware will trigger an automatic, mandatory 50% refund deduction to offset the permanent loss in remaining zero-hour technical utility.