PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20603Delay Line

Pulse Engineering Inc · NSN 5999-01-105-1668 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-105-1668 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-105-1668. Primary manufacturer part number: 20603.
Features
  • Delay Line — FSC 5999
  • Delay Time Variation Method: TAPPED
  • Body Width: 0.560 INCHES NOMINAL IN
  • Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC
  • Body Length: 2.500 INCHES NOMINAL IN
  • Mounting Facility Quantity: 13
  • Individual Section Quantity: 1
  • Voltage Rating: 25.000 VOLTS MAXIMUM
Applications
  • Applications requiring Copper Alloy or Copper Terminal construction
General Description

The Delay Line, cataloged under National Stock Number 5999-01-105-1668, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Pulse Engineering Inc. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-105-1668
Primary Part Number20603
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerPulse Engineering Inc
StatusACTIVE
Delay Time Variation MethodTAPPED
Body Width0.560 INCHES NOMINAL IN
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Body Length2.500 INCHES NOMINAL IN
Mounting Facility Quantity13
Individual Section Quantity1
Voltage Rating25.000 VOLTS MAXIMUM
Inclosure TypeENCASED
MaterialCOPPER ALLOY OR COPPER TERMINAL
Surface TreatmentTIN TERMINAL
Segment Delay Time20.000 NANOSECONDS NOMINAL SINGLE SECTION ALL SEGMENTS NS
Output Impedance Rating75.000 OHMS
Input Impedance Rating75.000 OHMS
Body Depth0.500 INCHES MAXIMUM IN
Segment Quantity Per Section10 SINGLE SECTION
Frequency Bandwidth39000.0 KILOHERTZ NOMINAL
Terminal Type and Quantity13 PIN
Mounting FacilityPIN(S)
Signal Delay MethodINDUCTANCE
Section Delay Time200.000 NANOSECONDS NOMINAL SINGLE SECTION NS
Attenuation in Decibels1.000
MaterialPLASTIC EPOXY BODY
Body StyleRECTANGULAR
Pulse Rise Time Rating20.0 NANOSECONDS NS
Delay Time Variation MethodTAPPED
Body Width0.560 INCHES NOMINAL IN
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Body Length2.500 INCHES NOMINAL IN
Mounting Facility Quantity13
Individual Section Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0500 lbs
Cube0.0030 cu ft
Verified Substitutes 7
5330-00-367-467476424A INTERCHANGEABLE
Gasket
Dresser, Llc
4720-00-401-944820603 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5950-00-448-0906 INTERCHANGEABLE
Coil,radio Frequency
5940-00-681-0146015-2002-479 INTERCHANGEABLE
Terminal,feedthru
Itt Cannon Rf Products
5920-01-004-4107010162 INTERCHANGEABLE
Fuse,cartridge
Astec Industries Inc Div Astec Ind.
6105-01-159-8821SPBEP9A1819A 230 V/1PH INTERCHANGEABLE
Motor,alternating Current
Foster Refrigerators Enterprise Inc
5985-01-412-05662-060-3 INTERCHANGEABLE
Line,radio Frequency Transmissio
Myat, Inc. Dba Myat Inc
Cross-Reference Index
Part NumberManufacturer
20603 Pulse Engineering Inc (USA)
XNS-319 Cornucopia Tool & Plastics, Inc. Dba Cornucopia Packaging (USA)
32-808710-1 General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems (USA)
EP6779 P C a Electronics Inc (USA)
227C-0.2 Artronic Instrument Co (USA)
Related Parts
5330-00-367-4674INTERCHANGEABLE
GASKET
76424A
4720-00-401-9448INTERCHANGEABLE
HOSE,PREFORMED
20603
5950-00-448-0906INTERCHANGEABLE
COIL,RADIO FREQUENCY
5940-00-681-0146INTERCHANGEABLE
TERMINAL,FEEDTHRU
015-2002-479
5920-01-004-4107INTERCHANGEABLE
FUSE,CARTRIDGE
010162
6105-01-159-8821INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
SPBEP9A1819A 230 V/1PH
5985-01-412-0566INTERCHANGEABLE
LINE,RADIO FREQUENCY TRANSMISSIO
2-060-3

Frequently Asked Questions

What is NSN 5999-01-105-1668?

NSN 5999-01-105-1668 is a Delay Line, manufactured by Pulse Engineering Inc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-105-1668?

NSN 5999-01-105-1668 has 5 cross-referenced part numbers: 20603 (Pulse Engineering Inc), XNS-319 (Cornucopia Tool & Plastics, Inc. Dba Cornucopia Packaging), 32-808710-1 (General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems), EP6779 (P C a Electronics Inc), 227C-0.2 (Artronic Instrument Co).

What NSN replaces 5999-01-105-1668?

There are 7 known substitutes for 5999-01-105-1668: 5330-00-367-4674, 4720-00-401-9448, 5950-00-448-0906 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20603?

Key specifications for 20603: Delay Time Variation Method: TAPPED; Body Width: 0.560 INCHES NOMINAL IN; Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC; Body Length: 2.500 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com