PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J4821Transformer,power

Johnson Electric Co · NSN 5950-00-849-0315 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-849-0315 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-849-0315. Primary manufacturer part number: J4821.
Features
  • Transformer,power — FSC 5950
  • Terminal Type and Quantity: 4 EYELET
  • Mounting Method: BRACKET(S) SINGLE GROUP
  • Maximum Transformer Power Rating: 115.0 VOLT-AMPERE SINGLE COMPONENT
  • Winding Power Rating: 115.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE PRIMARY
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Mounting Hole Diameter: 0.187 INCHES NOMINAL SINGLE GROUP IN
  • Mounting Slot Width: 0.187 INCHES NOMINAL SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-849-0315, 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 Johnson Electric Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-849-0315
Primary Part NumberJ4821
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerJohnson Electric Co
StatusACTIVE
Terminal Type and Quantity4 EYELET
Mounting MethodBRACKET(S) SINGLE GROUP
Maximum Transformer Power Rating115.0 VOLT-AMPERE SINGLE COMPONENT
Winding Power Rating115.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity2 SINGLE GROUP
Mounting Hole Diameter0.187 INCHES NOMINAL SINGLE GROUP IN
Mounting Slot Width0.187 INCHES NOMINAL SINGLE GROUP IN
Frequency Rating380.0 HERTZ MINIMUM AND 1000.0 HERTZ MAXIMUM SINGLE COMPONENT
Maximum Operating Temp125.0 CELSIUS DEGC
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5120-00-541-3186 INTERCHANGEABLE
Wrench,socket
5930-01-055-221035657 INTERCHANGEABLE
Switch,liquid Level
Setra Systems, Inc. Dba Gems Sensors
3020-01-074-923035657 INTERCHANGEABLE
Gear
Dana Light Axle Products, Llc Dba Dana Light Axle Products
4310-01-620-0075 INTERCHANGEABLE
Compressor Unit,rotary
Cross-Reference Index
Part NumberManufacturer
J4821 PRIMARY Johnson Electric Co (USA)
35657 Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
Related Parts
5120-00-541-3186INTERCHANGEABLE
WRENCH,SOCKET
5930-01-055-2210INTERCHANGEABLE
SWITCH,LIQUID LEVEL
35657
3020-01-074-9230INTERCHANGEABLE
GEAR
35657
4310-01-620-0075INTERCHANGEABLE
COMPRESSOR UNIT,ROTARY

Frequently Asked Questions

What is NSN 5950-00-849-0315?

NSN 5950-00-849-0315 is a Transformer,power, manufactured by Johnson Electric Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-849-0315?

NSN 5950-00-849-0315 has 2 cross-referenced part numbers: J4821 (Johnson Electric Co), 35657 (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp).

What NSN replaces 5950-00-849-0315?

There are 4 known substitutes for 5950-00-849-0315: 5120-00-541-3186, 5930-01-055-2210, 3020-01-074-9230 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J4821?

Key specifications for J4821: Overall Height: 2.060 INCHES NOMINAL IN; Overall Width: 2.380 INCHES NOMINAL IN; Overall Length: 2.430 INCHES NOMINAL IN; Terminal Type and Quantity: 4 EYELET. 14 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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