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Technical Data Sheet
70-1990 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: SILICON SEMICONDUCTOR, overall_length: 0.450 INCHES MAXIMUM IN, mounting_method: THREADED STUD(S), features_provided: HERMETICALLY SEALED CASE, nominal_thread_size: 0.250 INCHES IN, end_item_identification: J-69 AIRCRAFT ENGINE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6340-00-591-4639, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
70-1990
NSN: 6340-00-591-4639
FSC: 6340
CAGE: 73168 — KIDDE TECHNOLOGIES, INC DBA FENWAL SAFETY SYSTEMS DIV FENWALL SAFETY SYSTEMS (USA)
SPECIFICATIONS
materialSILICON SEMICONDUCTOR
overall_length0.450 INCHES MAXIMUM IN
mounting_methodTHREADED STUD(S)
features_providedHERMETICALLY SEALED CASE
nominal_thread_size0.250 INCHES IN
end_item_identificationJ-69 AIRCRAFT ENGINE
thread_series_designatorUNF
mounting_facility_quantity1
overall_width_across_flats0.667 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
terminal_type_and_quantity1 TAB, SOLDER LUG AND 1 THREADED STUD
specification/standard_data81349-MIL-S-19500/297 GOVERNMENT SPECIFICATION
current_rating_per_characteristic35.00 AMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE
NSN6340-00-591-4639
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEMICONDUCTOR DEVICE,DIODE TITLE COMPONENT PN 70-1990 MFR SEMICONDUCTOR DEVICE,D
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
701990Interchangeable
interchangeable cross-reference
interchangeable
MILS19500-297Interchangeable
interchangeable cross-reference
interchangeable
1N1188RInterchangeable
interchangeable cross-reference
interchangeable
1B1188RAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 70-1990?
70-1990 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 70-1990?
There are 4 known substitutes for 70-1990: 701990, MILS19500-297, 1N1188R and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 70-1990?
70-1990 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6340-00-591-4639. This indicates validated use in U.S. government and defense supply chains.
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