Model: 642AS7957

Non Wire Wound Variable Resistor

Properties:

Section Quantity
1
Body Style
Rectangular
Reliability Indicator
Not established
Terminal Length
0.300 inches
Shaft Diameter
Between 0.060 inches and 0.090 inches
Shaft Length
0.050 inches
Body Length
Between 0.230 inches and 0.270 inches
Body Width
Between 0.145 inches and 0.185 inches
Body Height
Between 0.230 inches and 0.270 inches
Shaft Style
Round, slotted
Actuator Type
Single shaft
Center To Center Distance Between Terminals
0.200 inches
Fragility Factor
Moderately delicate
Terminal Location
Lower adjacent side two rows
Mounting Method
Terminal
Center To Center Distance Between Terminal Rows
0.100 inches
Electrical Resistance Per Section
20.0 ohms single section
Center To Center Distance Between Center Terminal And Outside Terminal
0.100 inches
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
150.0 single section
Tempurature Coefficient Of Resistance Per Section In Ppm Per Deg Celsius
-50.0/+50.0 single section
Power Dissipation Rating Per Section In Watts
0.25 free air single section
Resistance Tolerance Per Section In Percent
-5.0/+5.0 single section
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
85.0 single section
Standard Taper Curve Per Section
A single section
Terminal Type And Quantity
3 pin
NSN
5905-01-071-4577
Part Number
642AS7957
Description
Resistor,variable,wire Wound,non
CAGE
30003

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 642AS7957 NSN 5905-01-071-4577

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:
A
ESD:
B
ESD:
B
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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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