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JANS2N3251A ✓ 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: 0.210 INCHES MAXIMUM IN, transfer_ratio: 300.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER, mounting_method: TERMINAL, terminal_length: 0.500 INCHES MINIMUM IN, overall_diameter: 0.195 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: PNP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-236-8861, 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
JANS2N3251A
NSN: 5961-01-236-8861
FSC: 5961
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
overall_length0.210 INCHES MAXIMUM IN
transfer_ratio300.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.195 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: PNP
features_providedHERMETICALLY SEALED CASE AND QUALITY ASSURANCE LEVEL S
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_circle_diameter0.100 INCHES NOMINAL IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
specification/standard_data81349-MIL-S-19500/323 GOVERNMENT SPECIFICATION
NSN5961-01-236-8861
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 JANS2N3251A MFR OEM TRANSISTOR
KEY FEATURES
•
TERMINAL CIRCLE DIAMETER: 0.100 INCHES NOMINAL IN
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 60.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE AND QUALITY ASSURANCE LEVEL S
•
TRANSFER RATIO: 300.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
•
POWER RATING PER CHARACTERISTIC: 1.2 WATTS MAXIMUM TOTAL POWER DISSIPATION
•
MOUNTING METHOD: TERMINAL
TECHNICAL CHARACTERISTICS (FLIS)
TERMINAL CIRCLE DIAMETER0.100 INCHES NOMINAL IN
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: PNP
OVERALL LENGTH0.210 INCHES MAXIMUM IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC60.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
FEATURES PROVIDEDHERMETICALLY SEALED CASE AND QUALITY ASSURANCE LEVEL S
TRANSFER RATIO300.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
POWER RATING PER CHARACTERISTIC1.2 WATTS MAXIMUM TOTAL POWER DISSIPATION
MOUNTING METHODTERMINAL
OVERALL DIAMETER0.195 INCHES MAXIMUM IN
TERMINAL LENGTH0.500 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
MILS19500-323Interchangeable
interchangeable cross-reference
interchangeable
JANTX2N3250Interchangeable
interchangeable cross-reference
interchangeable
504AInterchangeable
interchangeable cross-reference
interchangeable
10133084Interchangeable
interchangeable cross-reference
interchangeable
2N3251Interchangeable
interchangeable cross-reference
interchangeable
947307-2511Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is JANS2N3251A?
JANS2N3251A is a TRANSISTOR.
What parts can replace JANS2N3251A?
There are 18 known substitutes for JANS2N3251A: MILS19500-323, JANTX2N3250, 504A and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for JANS2N3251A?
JANS2N3251A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-236-8861. 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