Model: 25978-11

Audio Frequency Transformer

Properties:

Reliability Indicator
Not established
Center To Center Distance Between Mounting Facilities Parallel To Length
1.250 inches single mounting facility single center group
Center To Center Distance Between Mounting Facilities Parallel To Width
1.375 inches single mounting facility single center group
Impedance Rating In Ohms
6800.0 single component single primary
Impedance Rating In Ohms
13600.0 single component single secondary
Frequency Rating
45.0 hertz single component and 500.0 hertz single component
Maximum Transformer Power Rating
60.0 milliwatts single component
Winding Shielding Method
Internal shield grounded to inclosure and brought out to terminal single component
Body Length
1.875 inches
Body Width
1.625 inches
Body Height
2.625 inches
Inclosure Type
Hermetically sealed
Mounting Facility Quantity
4 single group
Mounting Method
Threaded stud single group
Winding Function And Quantity
1 primary single component and 1 secondary single component
Thready Qty Per Inch (tpi)
32 single group
Thread Size
0.138 inches single group
Winding Operating Current
2.0 milliamperes dc single component single secondary
Winding Operating Current
10.0 milliamperes dc single component single primary
Thread Series Designator
Unc single group
Terminal Type And Quantity
6 solder stud
NSN
5950-00-790-0044
Part Number
25978-11
Description
Transformer,audio Frequency
CAGE
92739

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 25978-11 NSN 5950-00-790-0044

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:
--
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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