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Technical Data Sheet
2N1049B ✓ 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: 0.215 INCHES MAXIMUM IN, mounting_method: THREADED STUD(S), overall_diameter: 0.420 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: NPN, features_provided: HERMETICALLY SEALED CASE, nominal_thread_size: 0.138 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-778-3958, 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
2N1049B
NSN: 5961-00-778-3958
FSC: 5961
CAGE: 30043 — SOLID STATE DEVICES, INC (USA)
SPECIFICATIONS
overall_length0.215 INCHES MAXIMUM IN
mounting_methodTHREADED STUD(S)
overall_diameter0.420 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
nominal_thread_size0.138 INCHES IN
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
mounting_facility_quantity1
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
specification/standard_data80131-RELEASE3379 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
NSN5961-00-778-3958
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 2N1049B MFR OEM TRANSISTOR
KEY FEATURES
NOMINAL THREAD SIZE: 0.138 INCHES IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 10.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
MOUNTING METHOD: THREADED STUD(S)
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 200.0 CELSIUS JUNCTION DEGC
SEMICONDUCTOR MATERIAL: SILICON
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASE: COLLECTOR
MOUNTING FACILITY QUANTITY: 1
CURRENT RATING PER CHARACTERISTIC: 500.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC AND 750.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.138 INCHES IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 10.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
MOUNTING METHODTHREADED STUD(S)
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT200.0 CELSIUS JUNCTION DEGC
SEMICONDUCTOR MATERIALSILICON
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASECOLLECTOR
MOUNTING FACILITY QUANTITY1
CURRENT RATING PER CHARACTERISTIC500.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC AND 750.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
OVERALL LENGTH0.215 INCHES MAXIMUM IN
OVERALL DIAMETER0.420 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
2N1047BInterchangeable
interchangeable cross-reference
interchangeable
RELEASE3379Interchangeable
interchangeable cross-reference
interchangeable
4-1003Interchangeable
interchangeable cross-reference
interchangeable
2N711BInterchangeable
interchangeable cross-reference
interchangeable
2N1050BInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N1049B?
2N1049B is a TRANSISTOR.
What parts can replace 2N1049B?
There are 5 known substitutes for 2N1049B: 2N1047B, RELEASE3379, 4-1003 and 2 more. Substitute compatibility should be verified for your specific system.
Is 2N1049B still available?
2N1049B is currently cancelled.
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