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Technical Data Sheet
2N4261 ✓ 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, mounting_method: TERMINAL, terminal_length: 0.500 INCHES NOMINAL IN, overall_diameter: 0.230 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: PNP, 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 5961-00-411-1937, 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
2N4261
NSN: 5961-00-411-1937
FSC: 5961
CAGE: C7191 — ADELCO ELEKTRONIK GMBH (DEU)
SPECIFICATIONS
overall_length0.210 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length0.500 INCHES NOMINAL IN
overall_diameter0.230 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: PNP
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_circle_diameter0.100 INCHES NOMINAL IN
terminal_type_and_quantity4 UNINSULATED WIRE LEAD
specification/standard_data81349-MIL-S-19500/511 GOVERNMENT SPECIFICATION
power_rating_per_characteristic200.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
NSN5961-00-411-1937
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 2N4261 MFR OEM TRANSISTOR
KEY FEATURES
OVERALL DIAMETER: 0.230 INCHES MAXIMUM IN
INTERNAL CONFIGURATION: JUNCTION CONTACT
SEMICONDUCTOR MATERIAL: SILICON
SPECIFICATION/STANDARD DATA: 80131-RELEASE5238 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
POWER RATING PER CHARACTERISTIC: 200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
CURRENT RATING PER CHARACTERISTIC: 30.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.210 INCHES MAXIMUM IN
OVERALL DIAMETER0.230 INCHES MAXIMUM IN
INTERNAL CONFIGURATIONJUNCTION CONTACT
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: PNP
SEMICONDUCTOR MATERIALSILICON
SPECIFICATION/STANDARD DATA80131-RELEASE5238 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
POWER RATING PER CHARACTERISTIC200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
CURRENT RATING PER CHARACTERISTIC30.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
TERMINAL TYPE AND QUANTITY4 UNINSULATED WIRE LEAD
FEATURES PROVIDEDHERMETICALLY SEALED CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
10658153Interchangeable
interchangeable cross-reference
interchangeable
2N4222Interchangeable
interchangeable cross-reference
interchangeable
2N4221Interchangeable
interchangeable cross-reference
interchangeable
RELEASE5238Interchangeable
interchangeable cross-reference
interchangeable
GES6002Interchangeable
interchangeable cross-reference
interchangeable
131551-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N4261?
2N4261 is a TRANSISTOR.
What parts can replace 2N4261?
There are 21 known substitutes for 2N4261: 10658153, 2N4222, 2N4221 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2N4261?
2N4261 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-411-1937. This indicates validated use in U.S. government and defense supply chains.
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