Model: 539D781

Non Wire Wound Variable Resistor

Properties:

Section Quantity
2
Body Style
Cylindrical bushing mounted
Reliability Indicator
Not established
Body Diameter
1.160 inches
Shaft Diameter
0.250 inches
Shaft Length
1.340 inches
Mounting Bushing Length
0.280 inches
Body Length
2.000 inches
Undercut Diameter
0.080 inches
Shaft Style
Round, stepped
Contact Arm Electrical Off Position
Fully ccw-cw
Actuator Type
Dual concentric
Effective Electrical Rotation In Deg Angular Rotation
300.0
Nonturn Device Location
At 9 oclock
Nonturn Device Radius
0.531 inches
Undercut Length
0.280 inches
Screw Thread Diameter
0.375 inches
Screw Thread Series Designator
Unef
Screw Thready Qty Per Inch (tpi)
32.0
Terminal Location
Radially positioned over less than half the circumference
Mounting Method
Standard bushing
Features Provided
Hermetically sealed
Electrical Resistance Per Section
1.0 percent, rated amperes c and better finish
Electrical Resistance Per Section
100.0 ohms c and better industrial clears
Rotary Actuator Travel In Angular Deg
300.0
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
340.0 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
12.5 free air all sections
Resistance Tolerance Per Section In Percent
-10.0/+10.0 all sections
Actuator Travel Control Feature
Stops
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
25.0 all sections
Standard Taper Curve Per Section
A all sections
Terminal Type And Quantity
6 tab, solder lug
NSN
5905-00-924-9221
Part Number
539D781
Description
Resistor,variable,wire Wound,non
CAGE
89954

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), if given, of the output is greater than plus of minus 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, precision.

Part 539D781 NSN 5905-00-924-9221

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37406
FIIG:
A002A0
Concept No.:
1
App. Key:
A
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:
B
ESD:
B
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
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:
72D
TCC:
3
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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