PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A40191Resistor,thermal

Telephone Company of America Incorporated · NSN 5905-00-556-7212 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-556-7212 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-556-7212. Primary manufacturer part number: A40191.
Features
  • Resistor,thermal — FSC 5905
  • Maximum Operating Temp: 200.0 CELSIUS DEGC
  • Zero Power Resistance at Specified Temp: 155.0 KILOHMS FIRST RESISTANCE-TEMPERATURE POINT
  • Reference Temp in Deg Celsius: 25.0
  • Zero Power Resistance Tolerance in Percent at Reference Temp: -10.0 TO 10.0
  • Inclosure Type: ENCAPSULATED
  • Temp Points for Resistance Readings at Zero Power: 40.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC
  • Zero Power Resistance at Specified Temp: 26.0 KILOHMS SECOND RESISTANCE-TEMPERATURE POINT
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
General Description

The Resistor,thermal, cataloged under National Stock Number 5905-00-556-7212, is classified within Federal Supply Class 5905 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Telephone Company of America Incorporated. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5905-00-556-7212
Primary Part NumberA40191
Item NameResistor,thermal
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerTelephone Company of America Incorporated
StatusCANCELLED
Maximum Operating Temp200.0 CELSIUS DEGC
Zero Power Resistance at Specified Temp155.0 KILOHMS FIRST RESISTANCE-TEMPERATURE POINT
Reference Temp in Deg Celsius25.0
Zero Power Resistance Tolerance in Percent at Reference Temp-10.0 TO 10.0
Inclosure TypeENCAPSULATED
Temp Points for Resistance Readings at Zero Power40.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC
Zero Power Resistance at Specified Temp26.0 KILOHMS SECOND RESISTANCE-TEMPERATURE POINT
Resistance Tolerance at a Specified Temp in Percent-10.0 TO 10.0 ALL RESISTANCE-TEMPERATURE POINTS
Zero Power Resistance50.000 KILOHMS
Temp Points for Resistance Readings at Zero Power0.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC
Ambient Temp at Full Rated Power125.0 CELSIUS DEGC
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5130-00-097-8078 INTERCHANGEABLE
Wheel,abrasive
3110-00-155-9143 INTERCHANGEABLE
Bearing,ball,thrust
3010-00-165-22078C INTERCHANGEABLE
Coupling,shaft,flexible
Reliance Electric Company Dba Reliance & Dodge Brands
5130-00-172-341880M INTERCHANGEABLE
Wheel,abrasive
Matz Rubber Company, Inc. Dba Matz Rubber Co Inc
6210-00-233-5375502-1010-2131-102 INTERCHANGEABLE
Light,indicator
Dialight Corporation
3010-00-239-34390706705 INTERCHANGEABLE
Coupling,shaft,flexible
Regal Rexnord Corporation
8030-00-247-2525 INTERCHANGEABLE
Sealing Compound
6695-00-349-60401C INTERCHANGEABLE
Vibrometer,electric
Vibroscope Co Inc the
5930-00-452-4552 INTERCHANGEABLE
Switch,centrifugal
5961-00-532-1027 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
8C American Telephone and Telegraph Co (USA)
8C At and T Corp (USA)
D162181 American Telephone and Telegraph Co (USA)
1C American Telephone and Telegraph Co (USA)
A40191 PRIMARY Telephone Company of America Incorporated (USA)
ICTHERMIST0R American Telephone and Telegraph Co (USA)
D162181AND1C American Telephone and Telegraph Co (USA)
D162181TYPE1C American Telephone and Telegraph Co (USA)
D162181 At and T Corp (USA)
D162181AND1C At and T Corp (USA)
D162181TYPE1C At and T Corp (USA)
8CTHERMIST0R American Telephone and Telegraph Co (USA)
1C At and T Corp (USA)
Related Parts
5130-00-097-8078INTERCHANGEABLE
WHEEL,ABRASIVE
3110-00-155-9143INTERCHANGEABLE
BEARING,BALL,THRUST
3010-00-165-2207INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
8C
5130-00-172-3418INTERCHANGEABLE
WHEEL,ABRASIVE
80M
6210-00-233-5375INTERCHANGEABLE
LIGHT,INDICATOR
502-1010-2131-102
3010-00-239-3439INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
0706705
8030-00-247-2525INTERCHANGEABLE
SEALING COMPOUND
6695-00-349-6040INTERCHANGEABLE
VIBROMETER,ELECTRIC
1C
5930-00-452-4552INTERCHANGEABLE
SWITCH,CENTRIFUGAL
5961-00-532-1027INTERCHANGEABLE
TRANSISTOR
5940-00-636-9746INTERCHANGEABLE
SPLICE,CONDUCTOR
8C
5342-00-693-9062INTERCHANGEABLE
GLAND,DOOR CLOSER

Frequently Asked Questions

What is NSN 5905-00-556-7212?

NSN 5905-00-556-7212 is a Resistor,thermal, manufactured by Telephone Company of America Incorporated, classified under FSC 5905 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5905-00-556-7212?

NSN 5905-00-556-7212 has 13 cross-referenced part numbers: 8C (American Telephone and Telegraph Co), 8C (At and T Corp), D162181 (American Telephone and Telegraph Co), 1C (American Telephone and Telegraph Co), A40191 (Telephone Company of America Incorporated) and 8 more.

What NSN replaces 5905-00-556-7212?

There are 12 known substitutes for 5905-00-556-7212: 5130-00-097-8078, 3110-00-155-9143, 3010-00-165-2207 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A40191?

Key specifications for A40191: Maximum Operating Temp: 200.0 CELSIUS DEGC; Zero Power Resistance at Specified Temp: 155.0 KILOHMS FIRST RESISTANCE-TEMPERATURE POINT; Reference Temp in Deg Celsius: 25.0; Zero Power Resistance Tolerance in Percent at Reference Temp: -10.0 TO 10.0. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5905-00-556-7212 still in active supply?

NSN 5905-00-556-7212 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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