MIL-PRF-22684 Resistors, Fixed, Film \(Insulated\) General Specification ForThis specification covers the general requirements for insulated, film, fixed resistors of 2- and 5- percent resistance tolerance. These resistors are capable of full-load operation at an ambient temperature of 70 degrees C and have a resistance-temperature characteristic of +200 parts per million per degree Celsius \(ppm/degrees C\), \(see 6.1\). Designers are CAUTIONED on using these resistors in high power pulse applications \(see 6.10\).

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MIL-PRF-22684F

3.11 Terminal strength.

3.11.1 Pull test. When tested as specified in 4.6.6.1, resistors shall withstand the specified load (see 3.1) without

mechanical damage.

3.11.2 Twist. When resistors are tested as specified in 4.6.6.2, the resistors shall meet the following requirements:

DC resistance:

Change shall not exceed �(0.5 percent + 0.05 ohm).

Visual examination:

There shall be no evidence of breakage or other mechanical damage.

3.12 Dielectric withstanding voltage. When resistors are tested as specified in 4.6.7, the resistors shall meet the

following requirements:

DC resistance:

Change shall not exceed �(0.5 percent + 0.05 ohm).

Leakage current:

Shall not exceed 1 milliampere at any time during test.

Visual examination:

There shall be no evidence of mechanical damage, arcing, or breakdown

3.13 Insulation resistance. When resistors are tested as specified in 4.6.8, the insulation resistance shall be not

less than 1,000 megohms.

3.14 Resistance to soldering heat. When resistors are tested as specified in 4.6.9, the resistors shall meet the

following requirements:

DC resistance:

Change shall not exceed �(0.5 percent + 0.05 ohm).

Visual examination:

There shall be no evidence of mechanical damage.

3.15 Moisture resistance. When resistors are tested as specified in 4.6.10, the resistors shall meet the following

requirements:

Dielectric withstanding voltage (atmospheric):

As specified in 3.12.

Insulation resistance:

Shall be not less than 100 megohms.

Change shall not exceed the value specified (see 3.1).

DC resistance:

Visual examination:

There shall be no evidence of mechanical damage.

3.16 Resistance-temperature characteristic. When resistors are tested as specified in 4.6.11, the change in

resistance at any temperature, referred to an ambient temperature of 25�C, shall not exceed �.02 percent per degree

Celsius (200 ppm/�C).

3.17 Life. When resistors are tested as specified in 4.6.12, there shall be no evidence of mechanical damage; the

change in resistance between the initial measurement and any succeeding measurements shall not exceed the value

specified (see 3.1).

3.18 Shock (specified pulse). When resistors are tested as specified in 4.6.13, the resistors shall meet the

following requirements:

Change in resistance shall not exceed �(0.5 percent +0.05 ohm).

DC resistance:

Electrical discontinuity:

0.1 millisecond or greater duration during test.

Visual examination:

There shall be no evidence of mechanical or electrical damage.