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Technical Data Sheet
SL521B ✓ 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 MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include body_height: 0.165 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN, special_features: WEAPONS SYSTEM ESSENTIAL, features_provided: MONOLITHIC AND HERMETICALLY SEALED AND BIPOLAR AND LOW LEVEL AND DC COUPLED AND POSITIVE OUTPUTS, precious_material: GOLD, inclosure_material: GLASS AND METAL, storage_temp_range: -55.0 TO 175.0 CELSIUS DEGC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-00-117-4573, 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
SL521B
NSN: 5962-00-117-4573
FSC: 5962
CAGE: 52648 — PLESSEY TRADING CORP PLESSEY OPTOELECTRONICS AND MICROWAVE (USA)
SPECIFICATIONS
body_height0.165 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
special_featuresWEAPONS SYSTEM ESSENTIAL
features_providedMONOLITHIC AND HERMETICALLY SEALED AND BIPOLAR AND LOW LEVEL AND DC COUPLED AND POSITIVE OUTPUTS
precious_materialGOLD
inclosure_materialGLASS AND METAL
storage_temp_range-55.0 TO 175.0 CELSIUS DEGC
test_data_document96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
body_outside_diameter0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
input_circuit_pattern2 INPUT
end_item_identificationAIRCRAFT, STRATOFORTRESS B-52
inclosure_configurationCAN
NSN5962-00-117-4573
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,DIGITAL TITLE COMPONENT PN SL521B MFR MICROCIRCUIT,DIGITAL
KEY FEATURES
INCLOSURE MATERIAL: GLASS AND METAL
BODY HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
FEATURES PROVIDED: HERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS
PRECIOUS MATERIAL AND LOCATION: TERMINALS GOLD
TERMINAL TYPE AND QUANTITY: 8 PIN
BODY OUTSIDE DIAMETER: 0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
TERMINAL SURFACE TREATMENT: GOLD
TECHNICAL CHARACTERISTICS (FLIS)
INCLOSURE MATERIALGLASS AND METAL
BODY HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
FEATURES PROVIDEDHERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS
PRECIOUS MATERIAL AND LOCATIONTERMINALS GOLD
SPECIAL FEATURESWEAPONS SYSTEM ESSENTIAL
TERMINAL TYPE AND QUANTITY8 PIN
BODY OUTSIDE DIAMETER0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
TERMINAL SURFACE TREATMENTGOLD
END ITEM IDENTIFICATIONINTERROGATOR SET TYPE AN/APX-76 AND AN/APX-81
INPUT CIRCUIT PATTERN2 INPUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
M2135-1Interchangeable
interchangeable cross-reference
interchangeable
2139722G001Interchangeable
interchangeable cross-reference
interchangeable
SL521BBInterchangeable
interchangeable cross-reference
interchangeable
161-557-0002Interchangeable
interchangeable cross-reference
interchangeable
SL521BB/CMInterchangeable
interchangeable cross-reference
interchangeable
911167Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SL521B?
SL521B is a MICROCIRCUIT,DIGITAL.
What parts can replace SL521B?
There are 6 known substitutes for SL521B: M2135-1, 2139722G001, SL521BB and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SL521B?
SL521B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-00-117-4573. This indicates validated use in U.S. government and defense supply chains.
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