參數(shù)資料
型號(hào)： 202799-1
廠商： Tyco Electronics
元件分類： 輸入/輸出連接器
英文描述： M Series Connectors
中文描述： M系列連接器
文件頁(yè)數(shù)： 79/100頁(yè)
文件大?。?/td> 5980K
代理商： 202799-1
AMP M Series
Pin and Socket Connectors
8
Catalog 82003
Dimensions are in millimeters
Dimensions are shown for
USA: 1-800-522-6752
South America: 55-11-3611-1514
Revised 06-08
and inches unless otherwise
reference purposes only.
Canada: 1-905-470-4425
Hong Kong: 852-2735-1628
specified. Values in brackets are
Specifications subject
Mexico: 01-800-733-8926
Japan: 81-44-844-8013
www.tycoelectronics.com
equivalent U.S. Customary Units.
to change.
C. America: 52-55-5-729-0425
UK: 44-141-810-8967
NOTE: All part numbers
are RoHS Compliant
Presentation - Example of New Current Rating Format
The presentation of current- car-
rying capacity in AMP product
specifications includes two parts:
First, a base curve showing cur-
rent levels versus T-rise for a
single circuit and the largest wire
size (See figure 1). This repre-
sents the maximum current
capacity of the contact. The
curve is usually flat up to 75°C
ambient and then drops off. Up
to 75°C, the 30°C T-rise limits
the amount of current, and
above 75°C the current must be
reduced to keep the combina-
tion of ambient temperature
and T-rise from exceeding the
maximum operating tempera-
ture of 105°C.
Next are rating factors; a table
of multipliers to account for
connector loading and for
smaller wire sizes (See figure 2).
The designer first determines
the base current for the ambi-
ent conditions of the
application; then multiplies this
base current by the rating fac-
tors to find the current level for
the application’s loading factor
and wire size.
Graph shows the relationship between base current, ambient
temperature, and contact T-rise.
0
10
20
30
40
50
60
70
80
90
100
0
5
10
15
Single Contact
18 AWG
Ambient Temperature (C)
C
ur
re
nt
R
at
in
g
(A
m
p
er
es
)
Rating factors allow the base current to be adjusted for various
connector loading and wire sizes.
Practical Values
The current-rating method gives
designers practical values appli-
cable to their applications. While
the specified current levels for a
contact may be lower than for
other testing methods, they are
more realistic and simplify the
system design process.
“Spec-manship” is replaced
by a realistic assessment of the
current-carrying capacity of a
Connector/Contact
Acceptability
As previously stated, choosing the
appropriate connector/contact
combination is fundamental to the
successful function of all connec-
tors. The Selection Chart, shown at
right, is designed to simplify your
choice of connectors and their
acceptable contacts. Once you
have selected the wire size, cur-
rent-carrying capacity need,
number of positions required, and
the type of contacts needed in
your choice of connector, refer to
this matrix for a quick look at
exactly what is acceptable in a
given connector type.
Note: Data is not typical of a spe-
cific M Series connector
configuration. For specific
current rating information based
on % connector loading, contact
Tyco Electronics.
To demonstrate the method of
specifying current, consider the
following application conditions;
an ambient temperature of 65°C, a
50% loading of contacts in the
housing, and 20 AWG [0.6mm2]
wire.
From Figure 1, the base current
rating is 14 ampere with 18 AWG
[0.8mm2] wire.
Figure 2, the rating factor for
50% loading and 20 AWG
[0.6mm2] wire is 0.68.
The specific rating for this appli-
cation is the product of the
base rating and the rating factor:
14 x 0.68 = 9.5 ampere
Each of the contacts can carry
9.5 ampere.
However, if the ambient tem-
perature is 80°C the allowable
T-rise becomes 25°C. The base
current must be lowered to 12.8
ampere so that the 105°C maxi-
mum operating temperature is
not exceeded. The current rat-
ing then becomes:
12.8 x 0.68 = 8.7 ampere.
18
20
22
24
26
Single
1
.83
.69
.59
.50
30%
.97
.80
.66
.57
.49
50%
.83
.68
.57
.48
.42
70%
.65
.53
.45
.38
.33
100%
.55
.45
.38
.32
.28
AWG
%
Lo
ad
in
g
Figure 2
contact under varying conditions
of temperature, connector load-
ing, and wire size.
Specific current-carrying data
based on EOL and % loading
is available from Tyco Electronics
Corporation. Please contact your
local Sales Engineer or call Tyco
Electronics Corporation.
Contact Selection Chart
Connector
Type
Type I
Type II
High Current
Type II/III
Type III+
Posted
Type III+
Type XII
High Current
Type XII
Mini-coax
Sub-Mini
Coax
M Series
M Series
Special
Curr
ent
Carrying
Capabilities
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