38999-Style Filter Performance
Chip-on-Flex Filter Connectors are designed to be comparable to MIL-DTL-38999.
Test Description
Paragraph
4.5.9
Requirements
Insulation Resistance
Insulation resistance test is performed on unmated connectors per MIL-STD-1344, method 3003. The test
voltage is 100 Vdc minimum. Standard quality conformance testing is done, where all contacts are measured
to all other contacts and the shell at room temperature. The minimum requirement is 5,000 Megohms at room
temperature and 1,000 Megohms at 125oC.
Dielectric Withstanding
Voltage (DWV)
4.5.10
Dielectric Withstanding Voltage (DWV) is performed on unmated connectors per MIL-STD-1344, method 3001.
Standard quality conformance testing is done, where all contacts are measured to all other contacts and the
shell at room temperature. Leakage current shall not exceed 100 microamps at the shown minimum test
voltages.
Contact Size
22 with ‘M’, ‘T’ & ‘H’
range filters
22 with ‘L’ range filters
20, 16 & 12
Test Voltage
500 Vdc
300 Vdc
500 Vdc
Contact Retention
4.5.19
4.5.22
After preloading to 3 pounds maximum, the force is applied at approximately 1 pound per second and
maintained at full load for 5-10 seconds. There is no damage to contacts or inserts and filter attenuation
minimum values are met after testing. Filter contacts are non-removable.
Contact Size
22
10
20
15
16
25
12
25
Load in Pounds + / - 10%
Vibration
Wired, mated connectors are vibrated by mounting filter receptacles on the vibration fixture by normal means.
There are no pin-socket electrical discontinuities exceeding 1 microsecond with 100/500 milliamps of current
flowing during vibration testing. There is no disengagement of mated connectors, evidence of cracking,
breaking or loosening of parts. Filter attenuation minimum values are met after testing.
Series I and IV
a) MIL-STD-202, Method 204, Condition G (30g sine, 4 hrs in 3 axis)
b) MIL-STD-1344, Method 2005, Condition VI, Letter J (Random, 8 hrs in 2 axis)
c) MIL-STD-1344, Method 2005, 38999-Style Figure 25
(Random, 8 hrs in 2 axis, no weights)
Series II
Series III
MIL-STD-1344, M2005, Cond. VI, Ltr J (Random, 8 hrs in 2 axis)
a) MIL-STD-1344, Method 2005, Condition VI, Letter J
(Random, 8 hrs in 2 axis at high temp)
b) MIL-STD-1344, Method 2005, 38999-Style Figure 25
(Random, 8 hrs in 2 axis, no weights)
Mechanical Shock
4.5.23.1
Wired, mated connectors are subjected to 300g half sinusoidal shocks per MIL-STD-1344, method 2004,
condition D. Filter receptacles are mounted on the shock fixture by normal means. There are no pin-socket
electrical discontinuities exceeding 1 microsecond with 100/500 milliamps of current flowing during shock
testing. There is no disengagement of mated connectors, evidence of cracking, breaking or loosening of parts.
Filter attenuation minimum values are met after testing.
Thermal Shock
4.5.4
Unmated connectors are subjected to 25 cycles of temperature cycling per MIL-STD-1344, method 1003,
condition A except temperature extremes are -65/-68oC and +122/125oC. There is no damage detrimental to
the operation of the connectors. Filter attenuation minimum values are met after testing.
High Altitude DWV
4.5.10.2
Unmated connectors are tested per MIL-STD-1344, method 3001 at the test voltages below. Only the
engaging face of receptacles are subjected to the high altitude (rear face is suitably protected). Leakage current
shall not exceed 100 microamps at the shown minimum test voltages.
Contact Size
22 with ‘M’, ‘T’ & ‘H’
range filters
22 with ‘L’ range filter
20, 16 &12
50,000 feet
70,000 feet
100,000 feet
400
260
200
240
150
125
400
260
200
Filter connector characteristics under Coupling Torque, Durability, Corrosion, Shell-to-shell Conductivity, Contact Resistance, Insert Retention,
Temperature Exposure and Humidity testing are identical to those of non-filtered MIL specification versions. Standard Operating Parameters:
Maximum Operating Voltage – 200 Vdc or 120 Vac rms at 400 Hz
Contact current rating (dc)
15 amps size 16
7.5 amps size 20
5 amps size 22
Contact RF current rating – 11 milliamps rms
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