The Delay Line, cataloged under National Stock Number 5999-01-249-8310, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Data Delay Devices. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-249-8310 |
| Primary Part Number | DDU4-8565-2 |
| Item Name | Delay Line |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Data Delay Devices |
| Status | ACTIVE |
| Pulse Rise Time Rating | 5.0 NANOSECONDS NS |
| Signal Delay Method | LUMPED CONSTANT |
| Section Delay Time | 250.000 NANOSECONDS NOMINAL SINGLE SECTION NS |
| Mounting Facility Quantity | 8 |
| Inclosure Type | HERMETICALLY SEALED |
| Surface Treatment Document and Classification | MIL-G-45204, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE TERMINAL |
| Body Style | RECTANGULAR |
| Precious Material | GOLD |
| Body Width | 0.400 INCHES MAXIMUM IN |
| Individual Section Quantity | 1 |
| Material Document and Classification | MIL-M-14, TYPE SDG MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Segment Quantity Per Section | 5 SINGLE SECTION |
| Delay Time Variation Method | TAPPED |
| Segment Delay Time | 50.000 NANOSECONDS NOMINAL SINGLE SECTION ALL SEGMENTS NS |
| Body Length | 0.800 INCHES MAXIMUM IN |
| Mounting Facility | PIN(S) |
| Terminal Type and Quantity | 8 PIN |
| Surface Treatment | PLASTIC EPOXY BODY |
| Surface Treatment | GOLD TERMINAL |
| Precious Material and Location | TERMINAL SURFACES GOLD |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE AND GLASS OR PLASTIC POLYCAPROLACTAM AND GLASS OR PLASTIC POLYHEXAMETHYLENE SEBACAMIDE AND GLASS BODY |
| Material | COPPER ALLOY TERMINAL |
| Body Depth | 0.320 INCHES MAXIMUM IN |
| Voltage Rating | 4.500 VOLTS MINIMUM AND 5.500 VOLTS MAXIMUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Weight | 0.0190 lbs |
| Cube | 0.0095 cu ft |
| Part Number | Manufacturer |
|---|---|
| DDU4-8565-2 | Data Delay Devices (USA) |
| 10T143 | Kappa Technologies Inc. (USA) |
| DDU4-5250M/883B | Data Delay Devices (USA) |
| Reference | Meaning |
|---|---|
| D9043 | 3/9 Design control — primary reference Computer Devices Corp |
| DDU-4-3250M/883B | 5/9 Secondary reference Data Delay Devices |
| SCD51990003-002 | 5/9 Secondary reference Peraton Inc |
NSN 5999-01-249-8310 is a Delay Line, manufactured by Data Delay Devices, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-249-8310 has 3 manufacturer part numbers on file: DDU4-8565-2 (Data Delay Devices), 10T143 (Kappa Technologies Inc.), DDU4-5250M/883B (Data Delay Devices).
Key specifications for DDU4-8565-2: Pulse Rise Time Rating: 5.0 NANOSECONDS NS; Signal Delay Method: LUMPED CONSTANT; Section Delay Time: 250.000 NANOSECONDS NOMINAL SINGLE SECTION NS; Mounting Facility Quantity: 8. 25 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5999-01-249-8310 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.