PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TDFAA-BReflectometer,optical Time Domai

Naval Inventory Control Point Mechanicsburg · NSN 6625-01-304-1740 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-304-1740 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-304-1740. Primary manufacturer part number: TDFAA-B.
Features
  • Reflectometer,optical Time Domai — FSC 6625
  • Nondefinitive Spec/std Data: 3 TYPE AND 5 CLASS AND D STYLE AND R COLOR
  • Nondefinitive Spec/std Data: 3 TYPE AND 5 CLASS AND D STYLE AND R COLOR
  • 3 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reflectometer,optical Time Domai, cataloged under National Stock Number 6625-01-304-1740, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-304-1740
Primary Part NumberTDFAA-B
Item NameReflectometer,optical Time Domai
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Nondefinitive Spec/std Data3 TYPE AND 5 CLASS AND D STYLE AND R COLOR
Nondefinitive Spec/std Data3 TYPE AND 5 CLASS AND D STYLE AND R COLOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeC0
Unit of IssueEA
SMR CodeCH
Weight25.0000 lbs
Cube2.2500 cu ft
Verified Substitutes 9
6650-01-304-1739 INTERCHANGEABLE
Test Set,optical Power
6625-01-304-1741704A2-01 INTERCHANGEABLE
Test Set,telecommunication Syste
Cxr Larus Corporation Div Cxr Telcom
6625-01-304-1742S9-5500A-NSPC-1 INTERCHANGEABLE
Test Set,computer Logic Unit
Phoenix Microsystems Inc
6625-01-304-1743 INTERCHANGEABLE
Oscilloscope
6625-01-307-5544 INTERCHANGEABLE
Oscilloscope
6625-01-312-9513495P-39/TR503/TM5003 INTERCHANGEABLE
Analyzer,spectrum
Tektronix, Inc.
6625-01-317-6856 INTERCHANGEABLE
Phase Angle Standard
6625-01-335-44728757E-S21 INTERCHANGEABLE
Test Set,electronic Systems
Hewlett-Packard Company Dba HP
6625-01-408-4889 INTERCHANGEABLE
Bridge,capacitance-Inductance-Re
Cross-Reference Index
Part NumberManufacturer
TDFAA-B Naval Inventory Control Point Mechanicsburg (USA)
MW920A/MH952A Anritsu America Inc (USA)
MIL-T-28800 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6650-01-304-1739INTERCHANGEABLE
TEST SET,OPTICAL POWER
6625-01-304-1741INTERCHANGEABLE
TEST SET,TELECOMMUNICATION SYSTE
704A2-01
6625-01-304-1742INTERCHANGEABLE
TEST SET,COMPUTER LOGIC UNIT
S9-5500A-NSPC-1
6625-01-304-1743INTERCHANGEABLE
OSCILLOSCOPE
6625-01-307-5544INTERCHANGEABLE
OSCILLOSCOPE
6625-01-312-9513INTERCHANGEABLE
ANALYZER,SPECTRUM
495P-39/TR503/TM5003
6625-01-317-6856INTERCHANGEABLE
PHASE ANGLE STANDARD
6625-01-335-4472INTERCHANGEABLE
TEST SET,ELECTRONIC SYSTEMS
8757E-S21
6625-01-408-4889INTERCHANGEABLE
BRIDGE,CAPACITANCE-INDUCTANCE-RE

Frequently Asked Questions

What is NSN 6625-01-304-1740?

NSN 6625-01-304-1740 is a Reflectometer,optical Time Domai, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-304-1740?

NSN 6625-01-304-1740 has 3 cross-referenced part numbers: TDFAA-B (Naval Inventory Control Point Mechanicsburg), MW920A/MH952A (Anritsu America Inc), MIL-T-28800 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6625-01-304-1740?

There are 9 known substitutes for 6625-01-304-1740: 6650-01-304-1739, 6625-01-304-1741, 6625-01-304-1742 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TDFAA-B?

Key specifications for TDFAA-B: Special Features: EQUIPPED WITH CRT DISPLAY;ELEC PWR SOURCE RELATIONSHIP:OPERATING;INCLOSURE FEATURE:SGL ITEM W/CARRYING CASE;TEST TYPE FOR WHICH DESIGNED:DETECTING MULTIMODE FIBER OPTIC CABLE FAULTS;OPERATING TEST CAPABILITY:WAVELENGTH-1300NM;DEAD ZONE-10M MAX;DISTANCE MEASUREMENT RANGE-10KM;DYNAMIC RANGE-15DB;REFRACTIVE INDEX SELECTION-1.4000 TO 1.6000; DB; Nondefinitive Spec/std Data: 3 TYPE AND 5 CLASS AND D STYLE AND R COLOR; Special Features: EQUIPPED WITH CRT DISPLAY;ELEC PWR SOURCE RELATIONSHIP:OPERATING;INCLOSURE FEATURE:SGL ITEM W/CARRYING CASE;TEST TYPE FOR WHICH DESIGNED:DETECTING MULTIMODE FIBER OPTIC CABLE FAULTS;OPERATING TEST CAPABILITY:WAVELENGTH-1300NM;DEAD ZONE-10M MAX;DISTANCE MEASUREMENT RANGE-10KM;DYNAMIC RANGE-15DB;REFRACTIVE INDEX SELECTION-1.4000 TO 1.6000; DB; Nondefinitive Spec/std Data: 3 TYPE AND 5 CLASS AND D STYLE AND R COLOR. 4 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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