Part Number
Definition:
A RESISTOR IN WHICH A SLIDING OR ROLLING CONTACT MOVES OVER AN EXPOSED AREA OF THE RESISTIVE ELEMENT. UNIFORM CONTACT PRESSURE ON THE RESISTANCE ELEMENT IS MAINTAINED BY POSITIVE PRESSURE TO PERMIT SMOOTH ELECTRICAL AND MECHANICAL CONTROL OF THE RESISTOR OVER THE ENTIRE RESISTANCE RANGE. THE RESISTIVE ELEMENT IS CONSTRUCTED OF A COMBINATION OF TWO MATERIALS USUALLY CONSISTING OF A WIREWOUND ELEMENT WITH A COATING OF CONDUCTIVE PLASTIC APPLIED OVER THE RESISTANCE WIRE WHERE THE SLIDER MAKES CONTACT. MAY BE CONSTRUCTED OF A SINGLE OR MULTITURNS OF WIRE SUPPORTED ON AN INSULATING STRUCTURE ON WHICH THE WIPER CONTACTS THE COATED WIRE CONTINUOUSLY IN THE DIRECTION OF WIPER TRAVEL. THE OPPOSITION TO THE FLOW OF CURRENT IS AN INHERENT PROPERTY OF THE WIRE USED AND IS MANIFESTED IN THE HEAT DISSIPATED IN THE RESISTOR ITSELF. 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 OTHER RESISTOR (1), VARIABLE, (AS MODIFIED).
CAGE Information
| Code | Company |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
Federal Supply Class
Title
RESISTORS
Inclusions:
INCLUDES VARISTORS; RESISTIVE BALLAST TUBES; RHEOSTATS; RESISTOR NETWORKS; RESISTOR MOUNTING HARDWARE; THERMISTORS.
Exclusions:
EXCLUDES RESISTANCE WIRE.
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| ABXF | SHAFT LENGTH | 0.625 INCHES NOMINAL |
| AAPN | SECTION QUANTITY | 1 |
| AEDX | SHAFT STYLE | ROUND |
| CQCC | ELECTRICAL RESISTANCE PER SECTION | 10000.000 OHMS SINGLE SECTION |
| ABJT | TERMINAL LENGTH | 0.250 INCHES NOMINAL |
| TTQY | TERMINAL TYPE AND QUANTITY | 3 PIN |
| AXGY | MOUNTING METHOD | TERMINAL |
| CQGN | AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER | 120.0 SINGLE SECTION |
| AEFN | NONTURN DEVICE LOCATION | AT 9 OCLOCK |
| ADAQ | BODY LENGTH | 0.453 INCHES NOMINAL |
| CRSS | RESISTANCE TOLERANCE PER SECTION IN PERCENT | -10.000/+10.000 SINGLE SECTION |
| APXH | TERMINAL LOCATION | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE |
| AARG | RELIABILITY INDICATOR | NOT ESTABLISHED |
| ABPM | BODY DIAMETER | 0.906 INCHES NOMINAL |
| AEHT | CENTER TO CENTER DISTANCE BETWEEN TERMINALS | 0.876 INCHES NOMINAL |
| AAQL | BODY STYLE | CYLINDRICAL BUSHING MOUNTED |
| CRGD | POWER DISSIPATION RATING PER SECTION IN WATTS | 1.0 FREE AIR SINGLE SECTION |
| AEFD | ACTUATOR TYPE | SINGLE SHAFT |
| CSDH | AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER | 70.0 SINGLE SECTION |
| ADAP | MOUNTING BUSHING LENGTH | 0.375 INCHES NOMINAL |
| CQCM | CENTER TO CENTER DISTANCE BETWEEN CENTER TERMINAL AND OUTSIDE TERMINAL | 0.438 INCHES NOMINAL |
| AEFP | NONTURN DEVICE RADIUS | 0.438 INCHES NOMINAL |
| ABWV | SHAFT DIAMETER | 0.250 INCHES NOMINAL |