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【范围】
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1.1 Scope
This specification covers two series of electrical, rectangular connectors with crimp type removable contacts. These
connectors are provided with single, dual, triple, and quadruple insert shell configurations.
1.2 Classification
Connectors covered by this specification shall be of the following types, classes, series and shell designators.
1.2.1 Type Description
The connector type shall be identified as follows:
Type I - Short grommet seal (series 1 only).
Type II - Standard grommet seal.
Type III - Without grommet seal.
Type IV - Without interfacial and grommet seals.
1.2.2 Class Description
The connector class shall be identified as follows:
Class 1: -65 to +125 °C.
Class 2: -65 to +200 °C.
1.3 Part Number
The part number shall consist of the letter "M", the basic number of the specification sheet, and coded numbers or letters
as shown in the following example:
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1.3.1 Basic Part Number
The basic part number shall be as shown on the applicable specification sheet. Revision letters shall not be included.
1.3.2 Shell Designator
The shell designator shall consist of a letter in accordance with the following:
A - A connector having a shell configuration to accommodate a keystone insert.
B - A connector having a shell configuration to accommodate a rectangular insert.
1.3.3 Series Designator
The series designator shall consist of a one digit number in accordance with the following:
Series 1 - Front release contacts.
Series 2 - Rear release contacts.
1.3.4 Insert Designator
The insert designator shall consist of a four digit number as shown on MS3157.
1.4 Polarization Position
The polarization position of the connector shall be in accordance with Table 1. Polarizing hardware is depicted in Figure
1A and 1B. All connectors shall be supplied with the polarizing hardware shipped loose. Polarization shall be
accomplished by the user and the position number marked on the connector shell following the part number (see 1.3).
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1.5 Wire Range Accommodations
Wire range accommodations of the contacts shall be as shown in Table 2.
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