166981-003 FCI, 166981-003 Datasheet - Page 12

• Manufacturer Part Number: 166981-003
• Manufacturer: FCI

Specifications of 166981-003

• Lead Free Status / Rohs Status: Not Compliant

TITLE
Specification of Requirements for Cable Preparation, Wire Termination and
Copyright FCI
Form E-3334
Rev E
Assembly of Connectors Using 72392-type Contacts
9.1.2 Wire Depth
The wire shall be inserted into the IDC dimples so that the wire depth is greater than or equal to
“ab” as measured from the connector insulator to the top of the wire insulation in region “A” (
Views A and C of Figure 9). A dial indicator ( as depicted on Figure 2 ) can be used to measure
the depth required. The minimum “ab” is based on the diameter of the wire being used. For
insulation diameters greater or equal to 0.6mm [0.0236 inch], “ab” can be determined from the
relation “ab” minimum = [(1.48 - O.D.) millimeters, (.058 - O.D.) inches]; where O.D. is the actual
outside diameter of the insulation of the wire in question. For insulation diameters below 0.6mm
[0.0236 inch] the minimum insertion depth is 0.88mm [0.0346 inch]. In the case where different
size wires are being inserted on the same side of the insulator, “ab” shall be calculated from the
largest wire insulation diameter.. Two insertion punches are available and the wire insulation
diameter determines which one is used. See the section on “Application Tooling” for details.
such pressure that the insulation spreads against the side of the contact walls in the IDC area
and opens up the contact. For these diameters measure the distance “D” across the IDC channel
at either IDC dimple as shown in view D of figure9 with the wire inserted. Open the wire strain
relief and gently remove the inserted wire. Again measure distance “D” at the same spot. The
measurement with the wire removed should be at least .05mm [.002 inch] less than with the wire
inserted. This measurement should be done when the insertion equipment is set up. If the
measurement is less than specified, reduce the depth of insertion until it is meet. Contact you FCI
representative if the wire you selected cannot meet all requirements.
A standard depth gage is available for the measurement of “ab” as listed below. We have
observed that with some wire insulation types, the insulation gradually lifts off the wire after
insertion. For this reason, the measurement of wire depth “ab” should be made as soon after
insertion as possible to avoid incorrect low readings.
For insulation diameters larger than 0.7mm [.0275 inch] it is possible to push on the wire with
FCI Part No.
413395-001
TYPE
APPLICATION SPECIFICATION
Figure 10 - Wire Depth Gage
Dial Indicator Insertion Depth Gage
Millimeters
Scale
Travel per Revolution
PDM: Rev:J
1.00
NUMBER
PAGE
AUTHORIZED BY
STATUS
STATUS:
J.R. Volstorf
12 of 29
Graduations
UNRESTRICTED
Released
GS-20-002
0.01
REVISION
DATE
25-Apr-06
Printed: Nov 27, 2010
J
GS-01-001
.