4-644381-1 TE Connectivity, 4-644381-1 Datasheet - Page 8

• Manufacturer Part Number: 4-644381-1
• Description: 11P MTA156 QUAD ASSY,W/TBS C/E
• Manufacturer: TE Connectivity

Specifications of 4-644381-1

• Connector Type: Connector Assembly
• Connector Design: Closed End
• Product Line: MTA-156
• Termination Method To Wire/cable: IDC Standard
• Wire Size (mm² [awg]): 0.8-0.9² [18]
• Mating Connector Lock: With
• Four Points Of Contact: With
• Shrouded: No
• Mounting Ears: Without
• Mating Connector Lock Type: Locking Ramp
• Panel Mount Retention: Without
• Solder Tail Contact Plating: Bright Tin
• Number Of Positions: 11
• Centerline (mm [in]): 3.96 [0.156]
• Narrow: No
• Post Number(s) Omitted: None
• Cable Exit Angle: 90°
• Contact Type: Socket
• Contact Plating, Mating Area, Material: Tin
• Contact Base Material: High Conductivity Copper Alloy
• Connector Style: Receptacle
• Housing Color: Black
• Mating Alignment: With
• Ul Flammability Rating: UL 94V-0
• Housing Material: Nylon
• Mating Alignment Type: Polarizing Tab
• Rohs/elv Compliance: RoHS compliant, ELV compliant
• Lead Free Solder Processes: Not relevant for lead free process
• Rohs/elv Compliance History: Always was RoHS compliant
• Applies To: Wire/Cable
• Application Use: Wire-to-Board

Example:
Rev C
NOTE
1.
2.
3.
For a 6 position connector on 20 AWG wire with 50% current loading density operating at 75EC.
!
!
!
!
% Connector Loading
Uniformly Distributed
To determine acceptable current carrying capacity for percentage connector loading and wire
gage indicated, use Multiplication Factor (F) from above chart and multiply it times Base
Rated Current for a single circuit at maximum ambient operating temperature shown in Figure
2A.
For rating factors of other connector position sizes, contact Tyco Electronics Product
Engineering.
Current rating chart represents series circuit loaded connectors. For parallel loaded circuits,
contact Tyco Electronics Product Engineering.
From current carrying capability curve (Figure 2A), base current rating at 75° C is 10 amperes.
From rating factors table (Figure 2B) for 20 AWG wire, rating factor at 50% loading is 0.79.
Multiply base rating by rating factor: 10.0 X 0.79 = 7.9 amperes
Each of 3 equally distributed contacts can carry 7.9 amperes maximum.
Single contact
25 to 35
65 to 75
100
50
0.73
0.69
0.71
0.73
0.60
0.66
0.73
0.50
0.56
0.73
0.40
0.49
0.69
22
Wire Size AWG
Current Rating
Figure 4B
0.85
0.80
0.83
0.85
0.69
0.79
0.85
0.57
0.68
0.85
0.45
0.61
0.85
20
Multiplication Factor (F)
0.94
0.97
1.00
0.82
0.93
1.00
0.65
0.82
1.00
0.53
0.66
0.85
18
1
Connector Assembly
Position Size
12
12
12
12
6
2
6
2
6
2
6
2
108-1219
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