The Semiconductor Device,thyristor, cataloged under National Stock Number 5961-01-176-3397, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-176-3397 |
| Primary Part Number | LO3321 |
| Item Name | Semiconductor Device,thyristor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 800.0 MAXIMUM OFF-STATE VOLTAGE, DC |
| Mounting Facility Quantity | 1 |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-118 |
| Mounting Method | THREADED STUD(S) |
| Criticality Code Justification | FEAT |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Overall Width Across Flats | 1.750 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.750 INCHES IN |
| Current Rating Per Characteristic | 400.00 AMPERES MAXIMUM ON-STATE CURRENT, RMS TOTAL |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG AND 1 THREADED STUD |
| Thread Series Designator | UNF |
| Reference Number Differentiating Characteristics | REFERENCE NUMBER DIFFERENTIATING MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT ACTIVITY HX QUALITY CONTROL. MANUFACTURING AND TESTING SPECIFICATIONS AVAILABLE AT THE DLA ICP |
| Power Rating Per Characteristic | 3.0 WATTS MAXIMUM GATE POWER DISSIPATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| LO3321 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| 113193 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5961-01-176-3397 is a Semiconductor Device,thyristor, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-176-3397 has 1 manufacturer part number on file: LO3321 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
2 possible matches (shared part number, not a government interchangeability claim): 4010-01-590-4131, 5961-01-709-1825. Verify interchangeability with system specifications before substitution.
Key specifications for LO3321: Voltage Rating in Volts Per Characteristic: 800.0 MAXIMUM OFF-STATE VOLTAGE, DC; Mounting Facility Quantity: 1; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-118; Mounting Method: THREADED STUD(S). 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.