Part Details | PRECISION WIRE WOUND VARIABLE RESISTOR
5905-00-987-3111 A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity) of the output is equal to or less than plus or munus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE, For items with step by step variation, see RHEOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, NONWIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND, PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, NONPRECISION.
Alternate Parts: 9997820, 5905-00-987-3111, 00-987-3111, 5905009873111, 009873111
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | JAN 01, 1962 | 00-987-3111 | 37408 ( RESISTOR, VARIABLE, WIRE WOUND, PRECISION ) |
REFERENCE DRAWINGS & PICTURES
RECTANGULAR
ROUND
Cross Reference | NSN 5905-00-987-3111
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 9997820 | 18876 | U S ARMY AVIATION AND MISSILECOMMAND |
Technical Data | NSN 5905-00-987-3111
| Characteristic | Specifications |
|---|---|
| SECTION QUANTITY | 2 |
| ELECTRICAL RESISTANCE PER SECTION | 20.0 KILOHMS ALL SECTIONS |
| RESISTANCE TOLERANCE PER SECTION IN PERCENT | -5.0 TO +5.0 ALL SECTIONS |
| FUNCTION CONFORMITY PER SECTION | ALL SECTIONS INDEPENDENT LINEARITY |
| FUNCTION CHARACTERISTIC PER SECTION | ALL SECTIONS LINEAR |
| FUNCTION CONFORMITY TOLERANCE PER SECTION | -0.50 TO +0.50 ALL SECTIONS |
| TEMP COEFFICIENT OF RESISTANCE WIRE PER SECTION IN PPM PER DEG CELSIUS | -20.0 TO +20.0 ALL SECTIONS |
| POWER DISSIPATION RATING PER SECTION IN WATTS | 1.0 FREE AIR ALL SECTIONS |
| AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER | 40.0 ALL SECTIONS |
| AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER | 175.0 ALL SECTIONS |
| BODY STYLE | RECTANGULAR |
| BODY LENGTH | 3.155 INCHES MINIMUM AND 3.185 INCHES MAXIMUM |
| BODY WIDTH | 0.655 INCHES MINIMUM AND 0.685 INCHES MAXIMUM |
| BODY HEIGHT | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM |
| ACTUATOR TYPE | SINGLE SHAFT |
| SHAFT STYLE | ROUND |
| SHAFT DIAMETER | 0.1871 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM |
| SHAFT LENGTH | 0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM |
| MOUNTING METHOD | SLOT |
| MOUNTING FACILITY QUANTITY | 2 |
| MOUNTING SLOT WIDTH | 0.175 INCHES MINIMUM AND 0.205 INCHES MAXIMUM |
| TERMINAL TYPE AND QUANTITY | 7 WIRE LEAD |
| TERMINAL LOCATION | REAR END |
| RELIABILITY INDICATOR | NOT ESTABLISHED |
| SPECIAL FEATURES | WIRE LEADS TERMINATED WITH WINCHESTER PLUG M7P; CASE SUPPLIED WITH MOUNTING LUGS |
| TEST DATA DOCUMENT | 18876-9997820 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| OVERALL LENGTH | 4.125 INCHES MINIMUM AND 4.215 INCHES MAXIMUM |
| OVERALL HEIGHT | 1.105 INCHES MINIMUM AND 1.135 INCHES MAXIMUM |
| OVERALL WIDTH | 0.785 INCHES MINIMUM AND 0.815 INCHES MAXIMUM |