PartsTable
Technical Data Sheet
IRFF9121 ✓ 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: 0.180 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 0.500 INCHES MINIMUM IN, overall_diameter: 0.360 INCHES NOMINAL IN, features_provided: ELECTROSTATIC SENSITIVE AND HERMETICALLY SEALED CASE, internal_configuration: FIELD EFFECT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-291-2885, 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
IRFF9121
NSN: 5961-01-291-2885
FSC: 5961
CAGE: 59993 — INTERNATIONAL RECTIFIER CORPORATION (USA)
SPECIFICATIONS
overall_length0.180 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.360 INCHES NOMINAL IN
features_providedELECTROSTATIC SENSITIVE AND HERMETICALLY SEALED CASE
internal_configurationFIELD EFFECT
semiconductor_materialSILICON
terminal_circle_diameter0.200 INCHES NOMINAL IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
specification/standard_data81349-MIL-PRF-19500/563 GOVERNMENT SPECIFICATION
power_rating_per_characteristic20.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
current_rating_per_characteristic-4.00 AMPERES MAXIMUM DRAIN CURRENT
NSN5961-01-291-2885
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 IRFF9121 MFR OEM TRANSISTOR
KEY FEATURES
TERMINAL CIRCLE DIAMETER: 0.200 INCHES NOMINAL IN
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASE: DRAIN
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 150.0 CELSIUS JUNCTION DEGC
TEST DATA DOCUMENT: 81349-MIL-PRF-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: -100.0 MAXIMUM DRAIN TO GATE VOLTAGE AND -100.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 20.0 MAXIMUM GATE TO SOURCE VOLTAGE
SPECIFICATION/STANDARD DATA: 81349-MIL-PRF-19500/563 GOVERNMENT SPECIFICATION
OVERALL DIAMETER: 0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TERMINAL CIRCLE DIAMETER0.200 INCHES NOMINAL IN
OVERALL LENGTH0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASEDRAIN
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT150.0 CELSIUS JUNCTION DEGC
TEST DATA DOCUMENT81349-MIL-PRF-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC-100.0 MAXIMUM DRAIN TO GATE VOLTAGE AND -100.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 20.0 MAXIMUM GATE TO SOURCE VOLTAGE
SPECIFICATION/STANDARD DATA81349-MIL-PRF-19500/563 GOVERNMENT SPECIFICATION
OVERALL DIAMETER0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
TERMINAL LENGTH0.500 INCHES MINIMUM IN
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATIONTO-205AF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
7110358-001Interchangeable
interchangeable cross-reference
interchangeable
IRFF9120Interchangeable
interchangeable cross-reference
interchangeable
04ES053-001Interchangeable
interchangeable cross-reference
interchangeable
IRFF9110Interchangeable
interchangeable cross-reference
interchangeable
JANTX2N6845Interchangeable
interchangeable cross-reference
interchangeable
SML3P10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is IRFF9121?
IRFF9121 is a TRANSISTOR.
What parts can replace IRFF9121?
There are 19 known substitutes for IRFF9121: 7110358-001, IRFF9120, 04ES053-001 and 16 more. Substitute compatibility should be verified for your specific system.
Is IRFF9121 still available?
IRFF9121 is currently cancelled.
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