PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1686-637
1686-637 ✓ 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: 0.260 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 0.500 INCHES MINIMUM IN, overall_diameter: 0.335 INCHES MAXIMUM IN, features_provided: HERMETICALLY SEALED CASE, internal_configuration: FIELD EFFECT-DUAL GATE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-096-8159, 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
1686-637
NSN: 5961-01-096-8159
FSC: 5961
CAGE: 31361 — WOODWARD, INC. (USA)
SPECIFICATIONS
overall_length0.260 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.335 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
internal_configurationFIELD EFFECT-DUAL GATE
semiconductor_materialSILICON
terminal_circle_diameter0.210 INCHES MAXIMUM IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
specification/standard_data80131-RELEASE6675 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
power_rating_per_characteristic6.25 WATTS MAXIMUM TOTAL POWER DISSIPATION
current_rating_per_characteristic2.00 MILLIAMPERES MAXIMUM FORWARD GATE CURRENT AND 2.00 AMPERES MAXIMUM DRAIN CURRENT
NSN5961-01-096-8159
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 1686-637 MFR OEM TRANSISTOR
KEY FEATURES
•
SEMICONDUCTOR MATERIAL: SILICON
•
POWER RATING PER CHARACTERISTIC: 6.25 WATTS MAXIMUM TOTAL POWER DISSIPATION
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 15.0 MAXIMUM FORWARD GATE TO SOURCE VOLTAGE AND 60.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 60.0 MAXIMUM DRAIN TO GATE VOLTAGE
•
MOUNTING METHOD: TERMINAL
•
SPECIFICATION/STANDARD DATA: 80131-RELEASE6675 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
•
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATION: TO-39
•
TERMINAL LENGTH: 0.500 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.260 INCHES MAXIMUM IN
SEMICONDUCTOR MATERIALSILICON
POWER RATING PER CHARACTERISTIC6.25 WATTS MAXIMUM TOTAL POWER DISSIPATION
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC15.0 MAXIMUM FORWARD GATE TO SOURCE VOLTAGE AND 60.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 60.0 MAXIMUM DRAIN TO GATE VOLTAGE
MOUNTING METHODTERMINAL
SPECIFICATION/STANDARD DATA80131-RELEASE6675 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATIONTO-39
TERMINAL LENGTH0.500 INCHES MINIMUM IN
OVERALL DIAMETER0.335 INCHES MAXIMUM IN
TERMINAL CIRCLE DIAMETER0.210 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
3522 500 29252Interchangeable
interchangeable cross-reference
interchangeable
2N6661Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-19500/547Interchangeable
interchangeable cross-reference
interchangeable
HS5181-6660Interchangeable
interchangeable cross-reference
interchangeable
352-1159-010Interchangeable
interchangeable cross-reference
interchangeable
2N6658Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1686-637?
1686-637 is a TRANSISTOR.
What parts can replace 1686-637?
There are 23 known substitutes for 1686-637: 3522 500 29252, 2N6661, MIL-PRF-19500/547 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1686-637?
1686-637 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-096-8159. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026