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MIL-PRF-23419 Fuse: Cartridge, Instrument Type, General Specification ForThis specification covers the general requirements and test procedures for instrument type fuses designed for the protection of electrical, electronic, and communication equipment on direct current \(dc\) and alternating current \(ac\) \(up to 400 hertz \(Hz\)\) circuits.

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MIL-PRF-23419H

TABLE II. Qualification inspection.

Requirement

Test method

Number of sample units

Inspection

paragraph

per current rating

Group I

Visual and mechanical examination

3.5, 3.19, 3.21

4.7.1

All

Continuity

3.6

4.7.2

Resistance (when specified, see 3.1)

3.7

4.7.3

Voltage drop (when specified, see

3.7.1

4.7.3.1

3.1)

Current-carrying capacity

3.8

4.7.4

Group II (see 3.1)

Terminal strength

Overload interrupt

Solderability (when specified)

3.17

4.7.13

Group III (see 3.1)

Short circuit

3.10.3

4.7.6.3

Maximum clearing current I t

3.10.2

4.7.6.2

(when specified)

Group IV

Vibration, high frequency

3.12.1

4.7.8.1

Vibration, random (when specified,

3.12.2

4.7.8.2

see 3.1)

Continuity

Shock

Continuity

Group V

Salt atmosphere (corrosion)

3.14

4.7.10

Overload interrupt (at room ambient

temperature and maximum voltage

3.10.1

4.7.6.1

rating)

Group VI

Outgassing (when specified, see 3.1)

Moisture resistance

Thermal shock

Current carrying capacity (at room

3.8

4.7.4

ambient temperature)

Overload interrupt (at room ambient

3.10.1

4.7.6.1

temperature and maximum voltage

rating)