Model: 55-90018-1

Audio Frequency Transformer
Description:

125.0 single component single secondary impedance rating in ohms, 400.0 hertz single component frequency rating, 4.0 watts single component maximum transformer power rating.

Properties:

Reliability Indicator
Not established
Transformer Function
Line
Impedance Rating In Ohms
125.0 single component single secondary
Impedance Rating In Ohms
8000.0 single component single primary
Frequency Rating
400.0 hertz single component
Maximum Transformer Power Rating
4.0 watts single component
Primary To Secondary Turn Ratio
1 to 9 single component
Body Length
2.187 inches
Body Width
1.500 inches
Body Height
1.437 inches
Distance Between Mounting Facility Centers
1.750 inches single mounting facility single center group
Inclosure Type
Open
Mounting Facility Quantity
2 single group
Mounting Method
Threaded hole single group
Winding Function And Quantity
1 primary single component and 1 secondary single component
Thready Qty Per Inch (tpi)
40 single group
Thread Size
0.112 inches single group
Winding Operating Current
180.0 milliamperes dc single component single secondary
Winding Operating Current
12.0 milliamperes dc single component single primary
Thread Series Designator
Unc single group
Terminal Type And Quantity
6 tab, solder lug
NSN
5950-00-028-0067
Part Number
55-90018-1
Description
Transformer,audio Frequency
CAGE
94923

A transformer which is designed so that part or all of its range of operating frequencies is 20 kilohertz (kilocycles) and below. The maximum value may extend into the radio frequency range. It is generally used in the input, output, amplifier, or oscillator stages of audio and sonar devices.

Part 55-90018-1 NSN 5950-00-028-0067

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00780
FIIG:
A058B0
Concept No.:
1
App. Key:
F
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:
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:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063420
UFC:
35355
LTL:
RATING VARIABLE
LCL:
--
WCC:
595
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8548900100
  • SITC: 77813
  • End Use: Electric apparatus
  • NAICS: 335999
  • USDA: 1

Freight Class: Electrical parts of machinery or apparatus not specified or included elsewhere in chapter 85

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