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MIL-PRF-39017 Resistors, Fixed, Film \(Insulated\), Nonestablished Reliability, And Established Reliability, General Specification ForThis specification covers the general requirements for nonestablished reliability \(non-ER\) and established reliability \(ER\), insulated, film, fixed resistors. These resistors are capable of full load operation at an ambient temperature of 70 Degrees C and have a resistance temperature characteristic of 100 parts per million \(PPM\) and 350 PPM per degree Celsius \(PPM/Degrees C\). The ER resistors have life failure rate \(FR\) levels ranging from 1.0 percent to 0.001 percent per 1,000 hours \(see 1.2.1.4\). These FR levels are established at a 60 percent confidence level on the basis of life tests. Designers are CAUTIONED on using these resistors in high power pulse applications \(see 6.13.2\).

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MIL-PRF-39017G

1.2.1.1 Style. The style is identified by the three-letter symbol "RLR" followed by a two-digit number;

the letters identify insulate, film, fixed resistors, and the number identifies the size and power rating of the

resistors.

1.2.1.1.1 Performance requirements. The performance requirements are identified in accordance with

table I.

TABLE I. Performance requirements.

Style

Maximum resistance temperature

characteristic in ppm/�C

�100

�350

�100

�350

�100

�350

�100

�350

(Ref. to 25�C) (see 3.1)

ppm/�C ppm/�C ppm/�C ppm/�C ppm/�C ppm/�C ppm/�C ppm/�C

Maximum ambient temperature

at rated wattage (see figure 2)

70�C

Maximum ambient temperature

at zero wattage (see figure 2)

150�C

125�C

150�C 125�C 150�C 125�C 150�C 125�C

Power rating and maximum dc

.125 W

.25 W .25 W

.5 W

or rms voltage

200V

250V 250V

350V

350V 500V

500V

Resistance tolerance (in percent)

1, 2

2, 5, 10

1, 2 2, 5, 10 1, 2

2, 5, 10 1, 2

2, 5, 10

Minimum resistance (ohms)

2.7

1.1 M

11 M

3.3 M

3.0 M

Maximum resistance (ohms)

22 M

10 M

22 M 3.01 M 22 M 2.7 M

22 M

Maximum percent change in

Resistance �: 1/

Power conditioning (3.8)

.25

Thermal shock (3.10)

.25

Low temperature storage (3.12)

.25

Low temperature operation (3.13)

Short time overload (3.14)

.25

Terminal strength (3.15)

.25

Dielectric withstanding voltage (3.18)

.25

Resistance to soldering heat (3.20)

Moisture resistance (3.21)

Shock (specified pulse) (3.22)

Vibration, high frequency (3.23)

Life (3.24)

High temperature exposure (3.25)

1,000

Insulation resistance - dry (3.19)

MΩ

Min

Insulation resistance - wet (3.21)

100

MΩ

Min

1/ Where total resistance change is 1.0 percent or less, it is considered as �(

percent +0.05 ohm).