MS27661F
Durability and separation:
The number of cycles of normal mating and unmating shall be 200. This shall be followed by 50 cycles of normal mating and straight pull. Following this, the connector shall be subjected to the below separation test. The pull rate shall be 5-inches/second max and each pull test shall be performed within 3 minutes of removal from the temperature chamber. Connector to be in chamber for 1 hour minimum. Separation values shall be within those listed in table II.
TABLE II. Separation forces.
Shell size |
Straight pull (lbs) max (see figure 1, note 5) |
15 degree pull (lbs) max (see figure 1, note 5) |
Separation forces (lbs) max after cold soak |
Separation forces (lbs) min |
11 |
15 |
20 |
150 |
5.5 |
13 |
20 |
25 |
150 |
5.5 |
15 |
25 |
30 |
150 |
12.0 |
17 |
30 |
35 |
250 |
12.0 |
19 |
35 |
45 |
250 |
12.0 |
21 |
45 |
55 |
250 |
12.0 |
23 |
55 |
65 |
250 |
12.0 |
25 |
65 |
75 |
250 |
12.0 |
SEPARATION TEST
Pull Type |
Step 1 |
Step 2 |
Step 3 |
Straight, 0° Pull |
Room ambient |
-65° C |
maximum temperature of connector |
15° Pull |
Room ambient |
-65° C |
maximum temperature of connector |
Vibration (qualification only):
Wired mated connectors shall meet the vibration requirements of MIL-DTL-38999 when subjected to the random vibration test specified in method 214 of MIL-STD-202. The following details and exceptions shall apply:
a. Receptacles shall be mounted on the vibration fixture by normal means. The wire bundle shall be clamped to nonvibrating points at least 8 inches from the rear of the connector.
b. Test condition II, letter E shall be used.
c. All contacts shall be wired in a series circuit and 100 to 150 milliamperes of current allowed to flow through the circuit during the test.
d. Duration of the test shall be 8 hours in the longitudinal axis and 8 hours in the perpendicular axis. e. An extender adapter, Bendix Part or Identifying Number (PIN) 10-494596-xx (xx-applicable
shell size) or equivalent, shall be used with SAE-AS85049/49-2 strain relief. Only the
SAE-AS85049/49-2 strain relief needs to be used on the mating receptacle.
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