PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X688Transformer,radio Frequency

Communication Coil, Inc. Div - · NSN 5950-00-766-2561 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-766-2561 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-766-2561. Primary manufacturer part number: X688.
Features
  • Transformer,radio Frequency — FSC 5950
  • Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT
  • Terminal Type and Quantity: 4 WIRE LEAD
  • Mounting Hole Diameter: 0.093 INCHES NOMINAL SINGLE GROUP IN
  • Distance Between Mounting Facility Centers: 0.718 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Width: 0.453 INCHES MAXIMUM IN
  • Body Length: 0.562 INCHES NOMINAL IN
  • Mounting Facility Quantity: 2 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-766-2561, 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 Communication Coil, Inc. Div -. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-766-2561
Primary Part NumberX688
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerCommunication Coil, Inc. Div -
StatusACTIVE
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Terminal Type and Quantity4 WIRE LEAD
Mounting Hole Diameter0.093 INCHES NOMINAL SINGLE GROUP IN
Distance Between Mounting Facility Centers0.718 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width0.453 INCHES MAXIMUM IN
Body Length0.562 INCHES NOMINAL IN
Mounting Facility Quantity2 SINGLE GROUP
Body Height0.671 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Frequency Rating500.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Adjustment Method and Quantity2 ADJUSTABLE CAPACITOR SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Transformer FunctionINPUT
Mounting MethodBRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
9390-00-841-7506X688 INTERCHANGEABLE
Nonmetallic Channel
Atlantic India Rubber Co Inc
Cross-Reference Index
Part NumberManufacturer
X688 PRIMARY Communication Coil, Inc. Div - (USA)
Related Parts
9390-00-841-7506INTERCHANGEABLE
NONMETALLIC CHANNEL
X688

Frequently Asked Questions

What is NSN 5950-00-766-2561?

NSN 5950-00-766-2561 is a Transformer,radio Frequency, manufactured by Communication Coil, Inc. Div -, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-766-2561?

NSN 5950-00-766-2561 has 1 cross-referenced part number: X688 (Communication Coil, Inc. Div -).

What NSN replaces 5950-00-766-2561?

There is 1 known substitute for 5950-00-766-2561: 9390-00-841-7506. Verify interchangeability with system specifications before substitution.

What are the specifications of X688?

Key specifications for X688: Adjustment Device Drive Type: SLOTTED SCREW SINGLE COMPONENT; Terminal Type and Quantity: 4 WIRE LEAD; Mounting Hole Diameter: 0.093 INCHES NOMINAL SINGLE GROUP IN; Distance Between Mounting Facility Centers: 0.718 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 16 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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