Model: B2678

Variable Attenuator

Properties:

Application Design
Audio
Body Style
Cylindrical w/rear terminals
Overall Length
4.125 inches
Shaft Diameter
0.250 inches
Shaft Length
0.875 inches
Body Length
3.000 inches
Overall Diameter
2.750 inches
Schematic Diagram Designator
C
Distance Between Mounting Facility Centers
1.500 inches
Operating Tempurature Range
-55.0/+125.0 degrees celsius
Power Rating
500.0 milliwatts average
Mounting Facility Screw Thread Series Designator
Unc
Overall Attenuation Range In Decibels
+0.0/+40.0
Attenuation Variation Method
Stepped
Step Position Quantity
23
Attenuation Per Step In Decibels
2.0
Mounting Facility Type And Quantity
2 threaded hole
Frequency Range
Between 0.000 kilohertz and 4.000 kilohertz
Overall Attenuation Accuracy In Decibels
-1.00/+1.00
Mounting Thread Quantity
32 per inch
Adjustment Device Type And Quantity
1 shaft
Mounting Facility Pattern
Two position in-line
Shaft Type
Round
Mounting Facility Screw Thread Diameter
0.164 inches
Impedance Rating In Ohms
600.0 input-output
Terminal Type And Quantity
3 tab, solder lug
NSN
5985-00-202-0258
Part Number
B2678
Description
Attenuator,variable
CAGE
82678

A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also resistor, vaiable (as modified).

Part B2678 NSN 5985-00-202-0258

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00838
FIIG:
A223A0
Concept No.:
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:
P
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:
0.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061700
UFC:
34580
LTL:
100.0
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8529109000
  • SITC: 76493
  • End Use: Telecommunications equipment
  • NAICS: 334220
  • USDA: 1

Freight Class: Antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi

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