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M4540L — Technical Data Sheet

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— · 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 end_item_identification: E.D. BULLARD COMPANY, SERIES M45.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System under NSN 4240-01-421-3662, 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
M4540L
NSN: 4240-01-421-3662
FSC: 4240
CAGE: 09729 — E. D. BULLARD COMPANY DBA ED BULLARD CO (USA)
SPECIFICATIONS
end_item_identificationE.D. BULLARD COMPANY, SERIES M45
NSN4240-01-421-3662
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEMICONDUCTOR DEVICE,DIODE TITLE COMPONENT PN M4540L MFR SEMICONDUCTOR DEVICE,D
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESSILICONE MASK; LARGE FULL FACE MASK; B100 BREATHING TUBE ASSEMBLY WITH ADJUSTABLE FLOW CONTROL VALVE; CONTINUOUS FLOW/PRESSURE DEMAND; SOLE SOURCE REQUIRED BY STATUTE 6.302; COMPONENT NIOSH APPROVAL TC-19C-322 AND 321
END ITEM IDENTIFICATIONE.D. BULLARD COMPANY, SERIES M45
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
3012GInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
927267InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7760507InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PL551-23PC15InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
527-57-5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
527-57PC5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M4540L?
M4540L is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace M4540L?
There are 11 known substitutes for M4540L: 3012G, 927267, 7760507 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M4540L?
M4540L is cataloged in the Federal Logistics Information System under NSN 4240-01-421-3662. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026