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Technical Data Sheet
PartsTable / COMPONENT / 2041AS991-01
2041AS991-01 ✓ 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: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 0.500 INCHES MINIMUM IN, overall_diameter: 0.370 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: NPN, internal_configuration: JUNCTION CONTACT-DARLINGTON CONNECTED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-411-4505, 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
2041AS991-01
NSN: 5961-01-411-4505
FSC: 5961
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
overall_length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.370 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
internal_configurationJUNCTION CONTACT-DARLINGTON CONNECTED
semiconductor_materialSILICON
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
power_rating_per_characteristic25.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
current_rating_per_characteristic50.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC AND 4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 6.00 AMPERES MAXIMUM COLLECTOR CURRENT, INSTANTANEOUS
voltage_rating_in_volts_per_characteristic60.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, INSTANTANEOUS
maximum_operating_temp_per_measurement_point150.0 CELSIUS JUNCTION DEGC
NSN5961-01-411-4505
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 2041AS991-01 MFR OEM TRANSISTOR
KEY FEATURES
•
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATION: TO-39
•
TEST DATA DOCUMENT: 30003-2041AS991 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
•
MOUNTING METHOD: TERMINAL
•
OVERALL DIAMETER: 0.370 INCHES MAXIMUM IN
•
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 150.0 CELSIUS JUNCTION DEGC
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 60.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, INSTANTANEOUS
•
TERMINAL LENGTH: 0.500 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATIONTO-39
TEST DATA DOCUMENT30003-2041AS991 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
MOUNTING METHODTERMINAL
OVERALL DIAMETER0.370 INCHES MAXIMUM IN
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT150.0 CELSIUS JUNCTION DEGC
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC60.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, INSTANTANEOUS
TERMINAL LENGTH0.500 INCHES MINIMUM IN
OVERALL LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: NPN
POWER RATING PER CHARACTERISTIC25.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
31322Interchangeable
interchangeable cross-reference
interchangeable
5136-00-197-9571Interchangeable
interchangeable cross-reference
interchangeable
C65623Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-296 TY3SEBInterchangeable
interchangeable cross-reference
interchangeable
3322Interchangeable
interchangeable cross-reference
interchangeable
31322TYPEDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2041AS991-01?
2041AS991-01 is a TRANSISTOR.
What parts can replace 2041AS991-01?
There are 16 known substitutes for 2041AS991-01: 31322, 5136-00-197-9571, C65623 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2041AS991-01?
2041AS991-01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-411-4505. 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