The Resistor,current Regulating, cataloged under National Stock Number 5905-00-549-4128, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Amperite Co Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-549-4128 |
| Primary Part Number | 2A12-180-220 |
| Item Name | Resistor,current Regulating |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Amperite Co Inc |
| Status | ACTIVE |
| Resistive Element Pin Connection | 2 AND 7 |
| Base Type | OCTAL |
| Current Type | AC/DC |
| Envelope Type Per Mil-E-1 | T-9(9-25) PER SPEC MIL-E-1B |
| Current Range in Amps | +0.180 TO 0.220 |
| Threshold Voltage in Volts | 15.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2A12-180-220 PRIMARY | Amperite Co Inc (USA) |
| Reference | Meaning |
|---|---|
| E1BTYPET9 | 4/1 Identification reference U.S. Government activity |
NSN 5905-00-549-4128 is a Resistor,current Regulating, manufactured by Amperite Co Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-549-4128 has 1 manufacturer part number on file: 2A12-180-220 (Amperite Co Inc).
Key specifications for 2A12-180-220: Resistive Element Pin Connection: 2 AND 7; Base Type: OCTAL; Current Type: AC/DC; Envelope Type Per Mil-E-1: T-9(9-25) PER SPEC MIL-E-1B. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.