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TFX12V Power Supply Design Guide
Thin Form Factor with 12 V Connector
Version 2.0
32
3.7 DC Connectors
Figure 14 shows pin outs and profiles for typical TFX12V power supply DC harness connectors. The TFX12V
requires an additional two-pin, power connector.
UL Listed or recognized component appliance wiring material rated min 85 °C, 300 VDC shall be used for all
output wiring.
There are no specific requirements for output wire harness lengths, as these are largely a function of the
intended end-use chassis, motherboard, and peripherals. Ideally, wires should be short to minimize
electrical/airflow impedance and simplify manufacturing, yet they should be long enough to make all
necessary connections without any wire tension (which can cause disconnections during shipping and
handling). Recommended minimum harness lengths for general-use power supplies is 150 mm for all wire
harnesses. Measurements are made from the exit port of the power supply case to the wire side of the first
connector on the harness.
Figure 14. TFX12V Connectors (Pin-side view, not to scale)
1
13
+3.3 VDC
+3.3 VDC
+3.3 VDC
-
12VDC
COM
COM
+5VDC
PS_ON
#
COM
COM
+5VDC
COM
COM
COM
PWR_O
K
NC
+5VSB
+5VDC
+12VDC
+5VDC
+12VDC
+5VDC
+3.3VDC
COM
Main Power Connector
1
13
+3.3 V
+3.3 V
+3.3 V
-
12V
COM
COM
+5V
PS_ON
#
COM
COM
+5V
COM
COM
COM
PWR_OK
NC
+5VSB
+5V
+12V1
+5V
+12V2
+5V
+3.3V
COM
Main Power Connector