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Technical Data Sheet
2N3644 ✓ 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 material: PLASTIC ENCLOSURE, overall_length: 0.140 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, mounting_method: TERMINAL, overall_diameter: 0.330 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: PNP, internal_configuration: JUNCTION CONTACT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-103-3981, 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
2N3644
NSN: 5961-00-103-3981
FSC: 5961
CAGE: D6528 — LACON ELECTRONIC GMBH (DEU)
SPECIFICATIONS
materialPLASTIC ENCLOSURE
overall_length0.140 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
mounting_methodTERMINAL
overall_diameter0.330 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: PNP
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_circle_diameter0.200 INCHES MAXIMUM IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
power_rating_per_characteristic300.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
current_rating_per_characteristic500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MILLIAMPERES MAXIMUM EMITTER CURRENT, DC
voltage_rating_in_volts_per_characteristic45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
NSN5961-00-103-3981
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 2N3644 MFR OEM TRANSISTOR
KEY FEATURES
INTERNAL CONFIGURATION: JUNCTION CONTACT
SEMICONDUCTOR MATERIAL: SILICON
OVERALL DIAMETER: 0.330 INCHES MAXIMUM IN
CURRENT RATING PER CHARACTERISTIC: 500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MILLIAMPERES MAXIMUM EMITTER CURRENT, DC
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 125.0 CELSIUS JUNCTION DEGC
TERMINAL CIRCLE DIAMETER: 0.200 INCHES MAXIMUM IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL CONFIGURATIONJUNCTION CONTACT
SEMICONDUCTOR MATERIALSILICON
OVERALL DIAMETER0.330 INCHES MAXIMUM IN
CURRENT RATING PER CHARACTERISTIC500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MILLIAMPERES MAXIMUM EMITTER CURRENT, DC
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT125.0 CELSIUS JUNCTION DEGC
TERMINAL CIRCLE DIAMETER0.200 INCHES MAXIMUM IN
OVERALL LENGTH0.140 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: PNP
MATERIALPLASTIC ENCLOSURE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
2N3646Interchangeable
interchangeable cross-reference
interchangeable
330-008Interchangeable
interchangeable cross-reference
interchangeable
530489Interchangeable
interchangeable cross-reference
interchangeable
2N3639AInterchangeable
interchangeable cross-reference
interchangeable
2N3639Interchangeable
interchangeable cross-reference
interchangeable
2N3642Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N3644?
2N3644 is a TRANSISTOR.
What parts can replace 2N3644?
There are 27 known substitutes for 2N3644: 2N3646, 330-008, 530489 and 24 more. Substitute compatibility should be verified for your specific system.
Is 2N3644 still available?
2N3644 is currently cancelled.
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