B621-2

View detailed technical data, stock status, and sourcing information for: B621-2
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5955 Oscillators and Piezoelectric Crystals

National Stock Number

5955-00-400-4871

Item Name Code

00196

Assigment Date

03/10/1969 (57 years ago)

A nonpositive displacement mechanical device having an axial fan impeller with or without a protective enclosure. It is designed to circulate air under free-airflow conditions, and may be equipped with a baffle(s) to deflect the air radially. It may be suspended from the ceiling, attached to the wall, or stand on a horizontal surface.

1.045 inches nominal overall length, 0.757 inches maximum overall width, 0.722 inches maximum body width, 1.380 inches minimum terminal length, 0.765 inches nominal body length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Overall Length: 1.045 inches nominal
Terminal Length: 1.380 inches minimum
Overall Width: 0.757 inches maximum
Body Length: 0.765 inches nominal
Body Width: 0.722 inches maximum
Body Thickness: 0.317 inches maximum
Overall Thickness: 0.352 inches maximum
Terminal Diameter: 0.030 inches nominal
Mode Of Oscillation: fundamental
Circuit Resonance: series resonance
Specified Frequency: 500.000 kilohertz
Center To Center Distance Between Terminals: 0.486 inches nominal
Operating Temp Range: -30.0 to 70.0 celsius
Drive Level Rating: 2.0 milliwatts nominal and 1.6 milliwatts minimum and 2.4 milliwatts maximum
Frequency Tolerance For Operating Temp In Percent: -0.010 to 0.010
Equivalent Resistance Value In Ohms: 1500.0 nominal
Style Designator: bracket type, wire leads

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
712730-24	Quartz Crystal Unit
B621-2	Quartz Crystal Unit

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5955-00-400-4871?

The FSCG of the NSN 5955-00-400-4871 is 5955

Does the NSN 5955-00-400-4871 have a Schedule B code assigned?

Yes, the Schedule B code is 8541900000

Does NSN 5955-00-400-4871 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 5955-00-400-4871 contain precious materials?

Precious metal content is unknown

Does NSN 5955-00-400-4871 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5955-00-400-4871 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Mon, Mar 10, 1969