Model: 28578C

Audio Frequency Transformer

Properties:

Reliability Indicator
Not established
Center To Center Distance Between Mounting Facilities Parallel To Length
1.875 inches single mounting facility single center group
Center To Center Distance Between Mounting Facilities Parallel To Width
1.688 inches single mounting facility single center group
Overall Height
2.781 inches
Transformer Function
Modulation and output
Impedance Rating In Ohms
5.0 single component 1st secondary and 20.0 single component 1st secondary
Impedance Rating In Ohms
6.0 single component single primary and 12.0 single component single primary and 24.0 single component single primary and 150.0 single component single primary
Impedance Rating In Ohms
100.0 single component 2nd secondary
Frequency Rating
100.0 hertz single component and 25.0 kilohertz single component
Maximum Transformer Power Rating
25.0 watts single component
Winding Shielding Method
Internal shield grounded to inclosure single component
Body Length
2.312 inches
Body Width
2.125 inches
Body Height
2.406 inches
Inclosure Type
Hermetically sealed
Mounting Facility Quantity
4 single group
Mounting Method
Threaded hole single group
Winding Function And Quantity
1 primary single component and 2 secondary single component
Thready Qty Per Inch (tpi)
32 single group
Thread Size
0.138 inches single group
Thread Series Designator
Unc single group
Terminal Type And Quantity
11 turret
NSN
5950-00-754-5942
Part Number
28578C
Description
Transformer,audio Frequency
CAGE
80089

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 28578C NSN 5950-00-754-5942

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:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
2.7000lbs
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:
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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