Part Details | VARIABLE ATTENUATOR
5985-00-257-6781 A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also RESISTOR, VAIABLE (as modified).
Alternate Parts: A22352SPEC3865, A2235-2SPEC3865, 3865T7320, 3865-T-7320, A22352SPEC3865, A2235-2SPEC3865, SPEC 3865, 5985-00-257-6781, 00-257-6781, 5985002576781, 002576781
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | JAN 01, 1963 | 00-257-6781 | 00838 ( ATTENUATOR, VARIABLE ) |
REFERENCE DRAWINGS & PICTURES
CYLINDRICAL W/SIDE TERMINALS
Cross Reference | NSN 5985-00-257-6781
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| A2235-2SPEC3865 | 58880 | MEGGITT (NEW HAMPSHIRE), INC |
| 3865-T-7320 | 58880 | MEGGITT (NEW HAMPSHIRE), INC |
| A2235-2SPEC3865 | 28057 | SHALLCO, INC. |
| SPEC 3865 | 28057 | SHALLCO, INC. |
Technical Data | NSN 5985-00-257-6781
| Characteristic | Specifications |
|---|---|
| APPLICATION DESIGN | TRANSMISSION LINE |
| FREQUENCY RANGE | 0.000 KILOHERTZ MINIMUM AND 50.000 KILOHERTZ MAXIMUM |
| IMPEDANCE RATING IN OHMS | 500.0 INPUT-OUTPUT |
| POWER RATING | 500.0 MILLIWATTS AVERAGE |
| OVERALL ATTENUATION RANGE IN DECIBELS | P0.0/P80.0 |
| OVERALL ATTENUATION ACCURACY IN DECIBELS | M0.40/P0.40 |
| ATTENUATION VARIATION METHOD | STEPPED |
| STEP POSITION QUANTITY | 8 |
| ATTENUATION PER STEP IN DECIBELS | 10.0 |
| BODY STYLE | CYLINDRICAL W/SIDE TERMINALS |
| OVERALL LENGTH | 3.0156 INCHES MAXIMUM |
| OVERALL WIDTH | 2.6562 INCHES MAXIMUM |
| BODY DIAMETER | 2.2812 INCHES MAXIMUM |
| BODY LENGTH | 2.0625 INCHES MAXIMUM |
| ADJUSTMENT DEVICE TYPE AND QUANTITY | 1 SHAFT |
| SHAFT TYPE | ROUND |
| SHAFT DIAMETER | 0.250 INCHES NOMINAL |
| SHAFT LENGTH | 0.9531 INCHES MAXIMUM |
| TERMINAL TYPE AND QUANTITY | 6 TAB, SOLDER LUG |
| MOUNTING FACILITY TYPE AND QUANTITY | 2 THREADED HOLE |
| MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR | UNC |
| MOUNTING FACILITY NOMINAL SCREW THREAD DIAMETER | 0.164 INCHES |
| MOUNTING THREAD QUANTITY | 32 PER INCH |
| MOUNTING FACILITY PATTERN | TWO POSITION IN-LINE |
| DISTANCE BETWEEN MOUNTING FACILITY CENTERS | 1.500 INCHES NOMINAL |