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Technical Data Sheet
PartsTable / COMPONENT / 2N78A
2N78A ✓ Verified by PartsTable
— · SFP TRANSCEIVER
WHAT YOU NEED TO KNOW
SR = Short Range (multimode, 300m) | LR = Long Range (single-mode, 10km) DOM = Digital Optical Monitoring — most enterprise SFPs support it
MATCH ALL THREE: Speed + Wavelength + Brand compatibility
PRODUCT OVERVIEW

The TRANSISTOR is a the manufacturer industrial component. Key specifications include overall_length: 0.320 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 1.500 INCHES MINIMUM IN, overall_diameter: 0.530 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: NPN, features_provided: HERMETICALLY SEALED CASE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-849-0951, 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
2N78A
NSN: 5961-00-849-0951
FSC: 5961
CAGE: 80131 — ELECTRONIC INDUSTRIES ASSOCIATION
SPECIFICATIONS
overall_length0.320 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length1.500 INCHES MINIMUM IN
overall_diameter0.530 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialGERMANIUM
terminal_circle_diameter0.192 INCHES NOMINAL IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
specification/standard_data80131-2N78A PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
internal_junction_configurationNPN
NSN5961-00-849-0951
COMPONENT DIAGRAM
BAIL LATCH 10G SFP+ 850nm · SR (MMF, 300m) DOM: Digital Optical Monitoring TX RX LC DUPLEX 20-PIN EDGE CONNECTOR ~56.5 mm ~13.4mm SFP+ TRANSCEIVER | 10G | 850nm | SR (MMF, 300m) Hot-swappable | LC duplex fiber | DDM/DOM supported TITLE SFP+ XCVR PN 2N78A MFR OEM TRANSISTOR
KEY FEATURES
•
INTERNAL JUNCTION CONFIGURATION: NPN
•
SEMICONDUCTOR MATERIAL: GERMANIUM
•
INTERNAL CONFIGURATION: JUNCTION CONTACT
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE
•
SPECIFICATION/STANDARD DATA: 80131-2N78A PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
TERMINAL TYPE AND QUANTITY: 3 UNINSULATED WIRE LEAD
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL JUNCTION CONFIGURATIONNPN
SEMICONDUCTOR MATERIALGERMANIUM
INTERNAL CONFIGURATIONJUNCTION CONTACT
FEATURES PROVIDEDHERMETICALLY SEALED CASE
SPECIFICATION/STANDARD DATA80131-2N78A PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TERMINAL TYPE AND QUANTITY3 UNINSULATED WIRE LEAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
MIL-S-19500/90Interchangeable
interchangeable cross-reference
interchangeable
JAN2N78AInterchangeable
interchangeable cross-reference
interchangeable
2N78AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N78A?
2N78A is a TRANSISTOR.
What parts can replace 2N78A?
There are 3 known substitutes for 2N78A: MIL-S-19500/90, JAN2N78A, 2N78A. Substitute compatibility should be verified for your specific system.
What is the NSN for 2N78A?
2N78A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-849-0951. 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: July 2026