Model: SM-A-720145-1

Pre Wire Wound Variable Resistor

Special Features:

Spring loaded shaft

Properties:

Section Quantity
2
Body Style
Cylindrical bushing mounted
Reliability Indicator
Not established
Body Diameter
1.820 inches
Shaft Diameter
Between 0.2494 inches and 0.250 inches
Shaft Length
Between 0.844 inches and 0.906 inches
Mounting Bushing Length
0.318 inches
Body Length
2.269 inches
Shaft Style
Round
Switch Type
Sensitive
Switch Voltage Rating In Volts
115.0 and 28.0
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
270.0
Maximum Starting Torque
4.00 inch-ounces
Maximum Running Torque
4.00 inch-ounces
Shaft End Play
0.005 inches
Shaft Runout
0.001 inches
Lateral Runout
0.001 inches
Pilot Diameter Runout
0.001 inches
Shaft Radial Play
0.002 inches
Mechanical Backlash In Deg Angular Rotation
1.0
Switch Operating Position
Start of linear movement
Switch Contact Arrangement
Single pole, double throw, three positions maintained
Fragility Factor
Moderately rugged
Screw Thread Diameter
0.375 inches
Screw Thread Series Designator
Unef
Screw Thready Qty Per Inch (tpi)
32.0
Terminal Location
Radially positioned over more than half the circumference
Mounting Method
Standard bushing
Features Provided
Switch
Electrical Resistance Per Section
20.0 kilohms all sections
Tap Location From Ccw Terminal Per Section In Deg Of Effective Electrical Rotation
135.0 all sections
Rotary Actuator Travel In Angular Deg
270.0
Function Conformity Tolerance Per Section
-1.00/+1.00 all sections
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
125.0 all sections
Tempurature Coefficient Of Resistance Per Section In Ppm Per Deg Celsius
-30.0/+30.0 all sections
Power Dissipation Rating Per Section In Watts
1.5 7th secondary pattern
Power Dissipation Rating Per Section In Watts
2.0 7th secondary finish
Function Conformity Per Section
All sections independent linearity
Fixed Tap Quantity Per Section
1 all sections
Tap Location Tolerance Per Section
-2.0/+2.0 degrees angular rotation all sections
Resistance Tolerance Per Section In Percent
-3.0/+3.0 all sections
Actuator Travel Control Feature
Stops
Function Characteristic Per Section
All sections linear
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
70.0 all sections
Switch Current Type And Rating In Amps
5.000 ac/dc
Terminal Type And Quantity
11 turret
NSN
5905-01-030-8750
Part Number
SM-A-720145-1
Description
Resistor,variable,wire Wound,pre
CAGE
80063

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.

Part SM-A-720145-1 NSN 5905-01-030-8750

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37408
FIIG:
A002A0
Concept No.:
1
App. Key:
D
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062960
UFC:
35140
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8533390080
  • SITC: 77233
  • End Use: Electric apparatus
  • NAICS: 334416
  • USDA: 1

Freight Class: Wirewound variable resistors, nesoi

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