PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BX5111Transformer,audio Frequency

Baltimore Transformer Co · NSN 5950-00-121-1852 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-121-1852 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-121-1852. Primary manufacturer part number: BX5111.
Features
  • Transformer,audio Frequency — FSC 5950
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Terminal Type and Quantity: 10 TAB, SOLDER LUG
  • Maximum Transformer Power Rating: 7.5 WATTS SINGLE COMPONENT
  • Inclosure Type: FULLY INCLOSED
  • Reliability Indicator: NOT ESTABLISHED
  • Frequency Rating: 100.0 HERTZ MINIMUM AND 5.1 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-121-1852, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Baltimore Transformer Co. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-121-1852
Primary Part NumberBX5111
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerBaltimore Transformer Co
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity10 TAB, SOLDER LUG
Maximum Transformer Power Rating7.5 WATTS SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Reliability IndicatorNOT ESTABLISHED
Frequency Rating100.0 HERTZ MINIMUM AND 5.1 KILOHERTZ MAXIMUM SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Body Height2.093 INCHES NOMINAL IN
Body Width2.562 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length3.000 INCHES NOMINAL IN
Impedance Rating in Ohms650.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY
Impedance Rating in Ohms36.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6515-00-079-4130 INTERCHANGEABLE
Tip,crutch
5985-00-469-38743000-40 INTERCHANGEABLE
Coupler,directional
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
5930-00-669-7845270AP20M0D2303 INTERCHANGEABLE
Switch,pressure
Johnson Controls Inc Control Products Div
6515-01-013-3911 INTERCHANGEABLE
Tip,crutch
4730-01-088-8335300040 INTERCHANGEABLE
Elbow,pipe to Tube
Kold-Ban International Ltd Div Kbi
5325-01-165-7695300040 INTERCHANGEABLE
Grommet,nonmetallic
Austin-Westran Llc
4730-01-337-813130-0040 INTERCHANGEABLE
Strainer Element,sediment
Parker Hannifin Corporation Div Village Marine Tech
6520-01-367-649290-0050 INTERCHANGEABLE
Syringe Cartridge Kit,dental Uni
Dntlworks Equipment Corporation
Cross-Reference Index
Part NumberManufacturer
X-8370 C P Electronics Inc (USA)
BX5111 PRIMARY Baltimore Transformer Co (USA)
300040 Airtronics Inc (USA)
Related Parts
6515-00-079-4130INTERCHANGEABLE
TIP,CRUTCH
5985-00-469-3874INTERCHANGEABLE
COUPLER,DIRECTIONAL
3000-40
5930-00-669-7845INTERCHANGEABLE
SWITCH,PRESSURE
270AP20M0D2303
6515-01-013-3911INTERCHANGEABLE
TIP,CRUTCH
4730-01-088-8335INTERCHANGEABLE
ELBOW,PIPE TO TUBE
300040
5325-01-165-7695INTERCHANGEABLE
GROMMET,NONMETALLIC
300040
4730-01-337-8131INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
30-0040
6520-01-367-6492INTERCHANGEABLE
SYRINGE CARTRIDGE KIT,DENTAL UNI
90-0050

Frequently Asked Questions

What is NSN 5950-00-121-1852?

NSN 5950-00-121-1852 is a Transformer,audio Frequency, manufactured by Baltimore Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-121-1852?

NSN 5950-00-121-1852 has 3 cross-referenced part numbers: X-8370 (C P Electronics Inc), BX5111 (Baltimore Transformer Co), 300040 (Airtronics Inc).

What NSN replaces 5950-00-121-1852?

There are 8 known substitutes for 5950-00-121-1852: 6515-00-079-4130, 5985-00-469-3874, 5930-00-669-7845 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BX5111?

Key specifications for BX5111: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP; Terminal Type and Quantity: 10 TAB, SOLDER LUG; Maximum Transformer Power Rating: 7.5 WATTS SINGLE COMPONENT; Inclosure Type: FULLY INCLOSED. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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