PartsTable TECHNICAL DATA SHEET

NSN 5963-01-643-1683Government record, cited

Oscillator, Crystal Controlled5963-01-643-1683

NSN 5963-01-643-1683 · NIIN 016431683 · Part number ECS-3953M-400-AU

Ecs Inc Intl · FSC 5963 — Electronic Modules · FSG 59 — Electrical and Electronic Equipment Components · CAGE 1G8B7

Government record, cited

NSN 5963-01-643-1683 — this item is cataloged by the U.S. Government under National Stock Number 5963-01-643-1683. Manufacturer of record part number: ECS-3953M-400-AU.

Also searched as 5963-01-643-1683 · 5963016431683 · NIIN 016431683 · 01-643-1683 · FSC 5963 Electronic Modules · CAGE 1G8B7 · ECS-3953M-400-AU · 70MC000188-001 · MIMH310055H-40.000MHZ · M243TAN-40.0000MHZ

Nearby stock numbers ← 5963-01-643-1446 Cca Assy, Data · 5963-01-643-2063 Frequency Divider →

Features

Oscillator,crystal Controlled — FSC 5963
3 manufacturer part numbers on file
Manufacturer of record: Ecs Inc Intl

Identification

NSN: 5963-01-643-1683
NIIN: 016431683
FSC: 5963 — Electronic Modules
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: ECS-3953M-400-AU
Manufacturer: Ecs Inc Intl

General Description

The Oscillator,crystal Controlled, cataloged under National Stock Number 5963-01-643-1683, is classified within Federal Supply Class 5963 (Electronic Modules) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ecs Inc Intl. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Catalog Facts

Item Name	Oscillator,crystal Controlled
FSC / FSG	5963 — Electronic Modules (FSG 59)
Manufacturers	Ecs Inc Intl (CAGE 1G8B7); Mmd Components (CAGE 1LAX4); M-Tron Industries, Inc (CAGE 23875)

Technical Specifications

Parameter	Value
NSN	5963-01-643-1683
Primary Part Number	ECS-3953M-400-AU
Item Name	Oscillator,crystal Controlled
FSC / FSG	5963 / 59 — Electronic Modules
Manufacturer	Ecs Inc Intl
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
ECS-3953M-400-AU PRIMARY	Ecs Inc Intl (USA)
MIMH310055H-40.000MHZ PRIMARY	Mmd Components (USA)
M243TAN-40.0000MHZ PRIMARY	M-Tron Industries, Inc (USA)

Reference documents

Reference	Meaning
70MC000188-001	7/9 Vendor item drawing reference Bae Systems Technology Solutions & Services Inc.

No interchangeability data on file.

Other items in FSC 5963 — Electronic Modules

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5963-00-001-4121

5963-00-001-4121 · Item name not on file

5963-00-001-4307

5963-00-001-4307 · Item name not on file

5963-00-001-6580

5963-00-001-6580 · Item name not on file

5963-00-001-6581

5963-00-001-6581 · Item name not on file

5963-00-001-7083

OSCILLATOR SUBASSEMBLY

5963-00-001-8302

OSCILLATOR,NONCRYSTAL CONTROLLED

5963-00-001-9516

5963-00-001-9516 · Item name not on file

5963-00-003-3565

ELECTRONIC MODULE,STANDARDIZED

Frequently Asked Questions

What is NSN 5963-01-643-1683?

NSN 5963-01-643-1683 is a Oscillator,crystal Controlled, manufactured by Ecs Inc Intl, classified under FSC 5963, Electronic Modules. Status: active.

What part numbers are listed for NSN 5963-01-643-1683?

NSN 5963-01-643-1683 has 3 manufacturer part numbers on file: ECS-3953M-400-AU (Ecs Inc Intl), MIMH310055H-40.000MHZ (Mmd Components), M243TAN-40.0000MHZ (M-Tron Industries, Inc).

Is NSN 5963-01-643-1683 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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