PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1520R-S250Server,automatic Data Processing

Microsemi Frequency and Time Corp · NSN 7035-01-581-4381 · FSC 7035 · No Item Name Available
Verified by PartsTable
NSN 7035-01-581-4381 — this item is cataloged by the U.S. Government under National Stock Number 7035-01-581-4381. Primary manufacturer part number: 1520R-S250.
Features
  • Server,automatic Data Processing — FSC 7035
  • Supplementary Features: OPTIONS: RUBIDIUM OR OCXO OSCILLATOR UPGRADE FOR EXTENDED HOLDOVER; WINDOW MOUNTED ANTENNA; GPS ANTENNA IN-LINE AMPLIFIER FOR CABLE RUNS TO 90 M; LIGHTNING ARRESTOR
  • Wattage Rating: 25.000 WATTS
  • Supplementary Features: OPTIONS: RUBIDIUM OR OCXO OSCILLATOR UPGRADE FOR EXTENDED HOLDOVER; WINDOW MOUNTED ANTENNA; GPS ANTENNA IN-LINE AMPLIFIER FOR CABLE RUNS TO 90 M; LIGHTNING ARRESTOR
  • Wattage Rating: 25.000 WATTS
  • 3 verified cross-references
  • Primary manufacturer: Microsemi Frequency and Time Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Server,automatic Data Processing, cataloged under National Stock Number 7035-01-581-4381, is classified within Federal Supply Class 7035 (No Item Name Available) of the General Purpose ADP Equipment group. The primary manufacturer of record is Microsemi Frequency and Time Corp. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN7035-01-581-4381
Primary Part Number1520R-S250
Item NameServer,automatic Data Processing
FSC / FSG7035 / 70 — No Item Name Available
ManufacturerMicrosemi Frequency and Time Corp
StatusACTIVE
Supplementary FeaturesOPTIONS: RUBIDIUM OR OCXO OSCILLATOR UPGRADE FOR EXTENDED HOLDOVER; WINDOW MOUNTED ANTENNA; GPS ANTENNA IN-LINE AMPLIFIER FOR CABLE RUNS TO 90 M; LIGHTNING ARRESTOR
Wattage Rating25.000 WATTS
Supplementary FeaturesOPTIONS: RUBIDIUM OR OCXO OSCILLATOR UPGRADE FOR EXTENDED HOLDOVER; WINDOW MOUNTED ANTENNA; GPS ANTENNA IN-LINE AMPLIFIER FOR CABLE RUNS TO 90 M; LIGHTNING ARRESTOR
Wattage Rating25.000 WATTS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeT
Unit of IssueEA
SMR CodeCT
Weight6.7800 lbs
Cube0.2164 cu ft
Verified Substitutes 1
5895-01-506-6072S250 INTERCHANGEABLE
Modem,communications
Symmetricom Puerto Rico Inc
Cross-Reference Index
Part NumberManufacturer
SYNCSERVER S250 Microsemi Frequency and Time Corp (USA)
1520R-S250 PRIMARY Microsemi Frequency and Time Corp (USA)
MCR550110000 Daronmont Technologies Pty Ltd (AUS)
Related Parts
5895-01-506-6072INTERCHANGEABLE
MODEM,COMMUNICATIONS
S250

Frequently Asked Questions

What is NSN 7035-01-581-4381?

NSN 7035-01-581-4381 is a Server,automatic Data Processing, manufactured by Microsemi Frequency and Time Corp, classified under FSC 7035 (No Item Name Available). Status: active.

What are the part numbers for NSN 7035-01-581-4381?

NSN 7035-01-581-4381 has 3 cross-referenced part numbers: SYNCSERVER S250 (Microsemi Frequency and Time Corp), 1520R-S250 (Microsemi Frequency and Time Corp), MCR550110000 (Daronmont Technologies Pty Ltd).

What NSN replaces 7035-01-581-4381?

There is 1 known substitute for 7035-01-581-4381: 5895-01-506-6072. Verify interchangeability with system specifications before substitution.

What are the specifications of 1520R-S250?

Key specifications for 1520R-S250: Special Features: SIZE: 4.5 CM X 43.2 CM X 28.6 CM; POWER: 100-240 VAC, 50-60 HZ; OPERATING TEMPERATURE: 0 DEGREE CELSIUS TO +50 DEGREE CELSIUS VAC; Supplementary Features: OPTIONS: RUBIDIUM OR OCXO OSCILLATOR UPGRADE FOR EXTENDED HOLDOVER; WINDOW MOUNTED ANTENNA; GPS ANTENNA IN-LINE AMPLIFIER FOR CABLE RUNS TO 90 M; LIGHTNING ARRESTOR; Wattage Rating: 25.000 WATTS; Special Features: SIZE: 4.5 CM X 43.2 CM X 28.6 CM; POWER: 100-240 VAC, 50-60 HZ; OPERATING TEMPERATURE: 0 DEGREE CELSIUS TO +50 DEGREE CELSIUS VAC. 6 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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