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Technical Data Sheet
PartsTable / MRO / 20-209
20-209 ✓ Verified by PartsTable
Legrand · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The SEMICONDUCTOR DEVICE,DIODE is a Legrand industrial component. Key specifications include overall_width: 4.125 INCHES NOMINAL IN, overall_height: 1.562 INCHES NOMINAL IN, overall_length: 6.937 INCHES NOMINAL IN, dc_voltage_rating: 6.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED, plug-in_tuning_unit: NOT INCLUDED, electrical_power_source_relationship: ALTERNATE OPERATING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-187-1487, 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
MRO→ MRO_GENERAL→ 20-209
NSN: 5330-00-187-1487
FSC: 5330
CAGE: 27235 — HARDIE-TYNES CO., INC. (USA)
SPECIFICATIONS
overall_width4.125 INCHES NOMINAL IN
overall_height1.562 INCHES NOMINAL IN
overall_length6.937 INCHES NOMINAL IN
dc_voltage_rating6.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
plug-in_tuning_unitNOT INCLUDED
receiver_band_quantity9
electrical_power_source_relationshipALTERNATE OPERATING
NSN5330-00-187-1487
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 20-209 MFR: Legrand ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.609 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
•
APERTURE DIAMETER: 1.406 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
OUTSIDE DIAMETER1.609 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
APERTURE DIAMETER1.406 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
LJT45Interchangeable
interchangeable cross-reference
interchangeable
7209W-SUInterchangeable
interchangeable cross-reference
interchangeable
72D9WInterchangeable
interchangeable cross-reference
interchangeable
1N4149Interchangeable
interchangeable cross-reference
interchangeable
20209Interchangeable
interchangeable cross-reference
interchangeable
DX-350Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-209?
20-209 is a SEMICONDUCTOR DEVICE,DIODE manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20-209?
There are 17 known substitutes for 20-209: LJT45, 7209W-SU, 72D9W and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-209?
20-209 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-187-1487. 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