The Microfuse, cataloged under National Stock Number 5920-00-397-0802, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Littelfuse, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-397-0802 |
| Primary Part Number | 272-125 |
| Item Name | Microfuse |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Littelfuse, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | PLUG-IN MICROFUSE,125 V MAX,0.125 AMP,BLOW TIME 4 HRS MIN AT 100 PCT,5 SEC MAX AT 200 PCT,METALCAP,0.230 IN.TO 0.240 IN.DIA,BODY 0.290 IN.H,TWO PINTERMINALS 0.170 IN.L 0.100 IN.APART V |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2043106 | Tkms Hagenuk Marinekommunikation Gmbh (DEU) |
| 450900-2272-125 | Northrop Grumman Litef Gmbh (DEU) |
| 272-125 PRIMARY | Littelfuse, Inc. (USA) |
| 6690007-120222-002-0 | Baainbw Dokumente Ohne Nutzungsrechte Des Baainbw Fur Beschaffungszwecke (DEU) |
| Reference | Meaning |
|---|---|
| 19278.125K | C/1 Advisory reference — outside the item-of-supply concept Littelfuse Europe Gmbh |
| 272.125 | 5/9 Secondary reference Wickmann Werke Gmbh |
| 272.125 | C/1 Advisory reference — outside the item-of-supply concept Littelfuse Europe Gmbh |
| 19278.125K | 5/9 Secondary reference Wickmann Werke Gmbh |
NSN 5920-00-397-0802 is a Microfuse, manufactured by Littelfuse, Inc., classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-00-397-0802 has 4 manufacturer part numbers on file: 2043106 (Tkms Hagenuk Marinekommunikation Gmbh), 450900-2272-125 (Northrop Grumman Litef Gmbh), 272-125 (Littelfuse, Inc.), 6690007-120222-002-0 (Baainbw Dokumente Ohne Nutzungsrechte Des Baainbw Fur Beschaffungszwecke).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-244-7439, 5330-01-485-4181. Verify interchangeability with system specifications before substitution.
Key specifications for 272-125: General Characteristics Item Description: PLUG-IN MICROFUSE,125 V MAX,0.125 AMP,BLOW TIME 4 HRS MIN AT 100 PCT,5 SEC MAX AT 200 PCT,METALCAP,0.230 IN.TO 0.240 IN.DIA,BODY 0.290 IN.H,TWO PINTERMINALS 0.170 IN.L 0.100 IN.APART V. 1 specification is 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.
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.