8
TM
3M
7
6
5
4
3
2
1
NOTES
ROUND CONDUCTOR FLAT CABLE, 3749 SERIES
1. REGULATORY INFORMATION:
FOR REGULATORY INFORMATION
ABOUT THIS PRODUCT, VISIT
3m.com/regs OR CONTACT YOUR
3M REPRESENTATIVE.
.025" 30 AWG SOLID, TPE
UL FILE NO: E42769.
STYLE NO: 20297
D
2. CLOSE SPACING PERMITS HIGHER
SIGNAL DENSITY
DIM A
DIM B
.013
0.33
.025
ORDERING INFORMATION
3749/XX XX
BLANK = STANDARD
C = CANADIAN CERTIFIED
VERSION
.005
.025
D
3. TPE INSULATION PROVIDES
EXCELLENT TRANSMISSION
PROPERTIES.
4. 30 AWG SOLID CONDUCTORS ON
.025 INCH SPACING ALLOWS
FOR MASS TERMINATION.
.002 TYP
0.64
5. ZIPPABLE FOR BRANCHING OR
DISCRETE TERMINATION.
6. MEETS THE SCSI-3 FAST-20
CHARACTERISTIC IMPEDANCE
REQUIREMENTS.
.003
0.64
7 BLUE MARKING ON ONE EDGE OF
CABLE DESIGNATES WIRE #1.
7
30 AWG [0.254] TINNED
SOLID COPPER CONDUCTORS
BLANK = STANDARD
SF = SPLICE FREE
TPE INSULATION
NUMBER OF CONDUCTORS
(SEE TABLE)
C
C
NOTE:
AVAILABLE IN STANDARD 100 FT OR 300 FT ROLLS. PLEASE
SPECIFY WHEN ORDERING. CONTACT 3M FOR AVAILABILITY
OF ADDITIONAL CONDUCTOR COUNTS AND/OR CUSTOM ROLL
LENGTHS.
PHYSICAL:
INSULATION
MATERIAL:
COLOR:
MARKING
STANDARD:
CANADIAN:
THERMOPLASTIC ELASTOMER, TPE (TPO TYPE)
GRAY
NONE
SEE "PRINTING ILLUSTRATION" VIEW
TABLE 1
R
0.225
0.275
0.325
0.375
0.475
0.575
0.625
0.725
0.825
0.875
0.975
1.225
1.475
1.675
1.975
2.475
G
.006 [6.35]
.006 [7.62]
.006 [8.89]
.006 [10.16]
.006 [12.70]
.006 [15.24]
.006 [16.51]
.009 [19.05]
.009 [21.59]
.009 [22.86]
.009 [25.40]
.009 [31.75]
.012 [38.10]
.012 [43.18]
.015 [50.80]
.015 [63.50]
0.254] TINNED SOLID COPPER
REVISION
0.250
0.300
0.350
0.400
0.500
0.600
0.650
0.750
0.850
0.900
1.000
1.250
1.500
1.700
2.000
2.500
CONDUCTORS
MATERIAL: 30 AWG [
DIMENSION B
.004 [5.72]
.004 [6.99]
.004 [8.26]
.004 [9.53]
.004 [12.07]
.004 [14.61]
.004 [15.88]
.006 [18.42]
.006 [20.96]
.006 [22.23]
.006 [24.77]
.006 [31.12]
.009 [37.47]
.009 [42.55]
.011 [50.17]
.012 [62.87]
ELECTRICAL:
VOLTAGE RATING: USA 150V
CANADIAN 150V
10
INSULATION RESISTANCE: >1 X 10
/10ft. [3m]
CHARACTERISTIC IMPEDANCE:
CAPACITANCE:
INDUCTANCE:
PROPAGATION DELAY:
VELOCITY OF PROPAGATION:
DRAWING NUMBER
DIMENSION A
78-5100-0068-6
3M PART
NUMBER
3749/10
3749/12
3749/14
3749/16
3749/20
3749/24
3749/26
3749/30
3749/34
3749/36
3749/40
3749/50
3749/60
3749/68
3749/80
3749/100
UNBALANCED
90
16.5 pF/ft [54.1 pF/m]
0.13
H/ft [0.43
H/m]
1.48 ns/ft [4.86 ns/m]
69%
B
NOTE: UNBALANCED IS MEASURED BETWEEN GROUND-SIGNAL-GROUND CONDUCTORS.
ENVIRONMENTAL:
TEMPERATURE RATING: -40 C TO +105 C
FLAMMABILITY RATING: USA: UL HORIZONTAL
CANADA: FT2
R
G 0101481
JAN 04,2022
REDRAWN
DIMENSIONS: INCH [MM]
DESIGN REFERENCE
CANADIAN OPTION
A
INCH [MM]
TOLERANCE - UNLESS NOTED
.X
.XX
.XXX
INCH
.1
.05
.010
[] = DIM. FOR REFERENCE ONLY
"PRINTING ILLUSTRATION"
R
3M ELECTRONICS MATERIALS SOLUTIONS DIVISION
INTERCONNECT SOLUTIONS
http://www.3M.com/interconnect
R
DIVISION
DO NOT
SCALE
DRAWING
4
1
INTERPRET PER
ASME Y14.5 - 2018
ALL SURFACES
MARKED ONLY
5
4
3
ECO
ISSUE DATE AND DESCRIPTION
DRFT
DATE
L SCHMIDT
DEC 14,2021
CHKD
DATE
T PLEPYS
JAN 04,2022
C
3M Center
125
6
REV
St. Paul,
TOLERANCES
EXCEPT AS
NOTED
SCALE
MAX SURFACE ROUGHNESS
7
WORK REQUEST 13221
DIVISION CODE
THIRD ANGLE PROJECTION
AWM IA 105C 150V FT2 EU
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