The Transistor, cataloged under National Stock Number 5961-00-027-9731, is classified within Federal Supply Class 5961 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Halliburton Geophysical Services Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5961-00-027-9731 |
| Primary Part Number | 2N2990 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — No Item Name Available |
| Manufacturer | Halliburton Geophysical Services Inc |
| Status | CANCELLED |
| Overall Diameter | 0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| Semiconductor Material | SILICON |
| Features Provided | HERMETICALLY SEALED CASE |
| Voltage Rating in Volts Per Characteristic | 155.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 100.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN |
| Electrode Internally-Electrically Connected to Case | COLLECTOR |
| Terminal Circle Diameter | 0.200 INCHES NOMINAL IN |
| Maximum Operating Temp Per Measurement Point | 200.0 CELSIUS CASE DEGC |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Current Rating Per Characteristic | 1.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 200.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC |
| Mounting Method | TERMINAL |
| Power Rating Per Characteristic | 1.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION |
| Internal Configuration | JUNCTION CONTACT |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2N2990 | Halliburton Geophysical Services Inc (USA) |
| 2N2990 | Hybrid Semiconductors & Electronics Inc Dba Hybrid Semi Conductors & Electronics (USA) |
| 2N2990 | Texas Instruments Incorporated (USA) |
| 2N2990 | Electronic Industries Association |
| L01936 | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| 2N2990 | Solitron Devices, Inc. (USA) |
| 11069816 | Us Army Aviation and Missile Command (USA) |
| RELEASE4401 | Electronic Industries Association |
NSN 5961-00-027-9731 is a Transistor, manufactured by Halliburton Geophysical Services Inc, classified under FSC 5961 (No Item Name Available). Status: cancelled.
NSN 5961-00-027-9731 has 8 cross-referenced part numbers: 2N2990 (Halliburton Geophysical Services Inc), 2N2990 (Hybrid Semiconductors & Electronics Inc Dba Hybrid Semi Conductors & Electronics), 2N2990 (Texas Instruments Incorporated), 2N2990 (Electronic Industries Association), L01936 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)) and 3 more.
There are 7 known substitutes for 5961-00-027-9731: 5961-00-007-7463, 5961-00-228-6811, 5961-00-486-6082 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2N2990: Overall Length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Special Features: JUNCTION PATTERN ARRANGEMENT: NPN; Overall Diameter: 0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN; Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 5961-00-027-9731 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.