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MIL-PRF-55182-9 Resistors, Fixed, Film, Nonestablished Reliability, Established Reliability, And Space Level, Style Rn*90 1/This specification covers the associated requirements for style RN*90 1/, nonestablished reliability, established reliability, and space level, fixed, film, resistors. Designers are CAUTIONED on using these resistors in high power pulse applications \(see 6.9\).

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MIL-PRF-55182/9G
3.15.3 +70°C power rating. When resistors are tested as specified, there shall be no evidence of mechanical
damage and the change in resistance shall not exceed ±.05 percent.
3.16 High temperature exposure. When resistors are tested as specified, there shall be no evidence of mechanical
damage and the change in resistance shall not exceed ±.5 percent. Following this test, the dielectric withstanding
voltage shall be as specified in 3.10, and the insulation resistance shall be 1,000 megohms, minimum.
3.17 Low temperature storage. When resistors are tested as specified, there shall be no evidence of mechanical
damage. The change in resistance shall not exceed ±.05 percent.
3.18 Voltage coefficient (applicable to resistors of 1,000 ohms and above). The voltage coefficient shall not
exceed ±.0005 percent per volt.
3.19 Marking. The resistor shall be marked as follows:
12345
-
Source code.
0226J
-
Date code and JAN marking.
RNC90Y
-
Style, terminal, and characteristic.
49R000
-
Resistance.
BM
-
Tolerance and product level.
Type designation shall be marked on one side of units, with remainder of required marking on other side.
NOTE: Optional marking is allowed on top of the surface to facilitate automatic printing equipment. The following is
an example of optional marking:
a.
Top: 05347J
- Source code and JAN marking.
b.
Side: RNC90Y  - Style, terminal, and characteristic.
10K000B - Resistance and tolerance.
R0226A  - Product level, date code, and lot symbol.
4. VERIFICATION
4.1 Verification. Verification shall be in accordance with MIL-PRF-55182.
4.2 Terminal strength. In accordance with MIL-PRF-55182 except:
a.
The body shall be clamped and the lead pulled in a direction parallel and along the axis of lead.
b.
Applied force: - 2 pounds.
4.3 Dielectric withstanding voltage. The test voltages applicable to style RNC90 are as follows:
Atmospheric pressure: 300 volts rms.
Barometric pressure (reduced): 200 volts rms.
The resistor body shall be held between metal straps (see figure 2).
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