3.3V DC Power Supplies | McMaster-Carr

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17 Products

Desktop Computer Power Supplies


4+4 Pin ATX	20+4 Pin ATX	Floppy-Disk Drive Molex Mini-Fit 4 Pin

PCI-E 6+2 Pin Molex Mini-Fit	Peripheral AMP	Standard SATA

Convert AC voltage to DC voltage to power components inside desktop computers. These power supplies meet ATX industry standards, so they fit into most desktop computers. The higher the energy efficiency of a power supply, the lower the operating costs will be. These power supplies generate enough power for PCs with dedicated graphics cards and computers used for intensive tasks such as video editing and CAD design.

	Output
	Voltage	Current	Power, W	Standby Current @ Voltage	Plug Type (No. of)	Energy Efficiency Rating	Efficiency @ Voltage	Ht.	Wd.	Dp.	Cable Lg., ft.		Each
100V AC to 240V AC Input Voltage



		3.3V DC 5V DC 12V DC	22 amp 17 amp 42 amp	600	2.5 amp @ 5V DC	4+4 Pin ATX (1) 20+4 Pin ATX (1) Floppy-Disk Drive Molex Mini-Fit 4 Pin (3) PCI-E 6+2 Pin Molex Mini-Fit (2) Peripheral AMP (1) Standard ATA Molex Mini-Fit 5 (6)	80 PLUS Bronze	82% @ 115V AC 82% @ 230V AC	3.4"	5.9"	5.5"	2	3737N12	000000

Power Supplies


	Single Phase, Screw-Terminal Input and Output Connection

To power electronics ranging from simple prototypes to complex industrial automation and process control equipment, these general purpose power supplies convert AC to DC voltage. Mount them to a surface inside your device’s enclosure.

So you don’t accidentally touch internal components and shock yourself, these power supplies have their own housing. If you occasionally need to poke around inside your device’s enclosure, the housing also protects the power supplies themselves from damage. But compared to open-frame power supplies, these have a larger footprint, so they won’t fit in tight spaces.

For output wire connections, choose between standard screw terminals and quick-disconnect terminals. Use quick-disconnect terminals if you have wires with ring terminal ends. To connect them, slide a screw through the hole in the quick-disconnect terminal, slip the ring terminal from your wire over the screw, and tighten a nut on the end of the screw to hold everything in place. Screws, nuts, and ring terminals are not included.

All of these power supplies use switching regulation, which means they produce the stated voltage despite fluctuations in your input power and the power being drawn by your system, and they won’t become too hot. Power supplies that are SEMI F47 compliant meet standards for maintaining output voltage when input voltage dips. This is commonly known as voltage sag immunity.

If you exceed the maximum current, load, or voltage, these power supplies shut down to protect both the power supply and the connected equipment. Some also protect against excessive temperatures. All meet stringent safety standards.

Maximum Output Noise Peak-to-Peak—Maximum output noise is also known as ripple noise. The lower the value, the less interference the power supply creates. For most applications, a value over 100mVpp isn’t a problem. However, when using to power extremely sensitive electronics, such as audio equipment and high-precision measuring and testing equipment, you’ll want an output noise around 5mVpp or less.

Power Factor @ Voltage—Power factor shows how effectively a power supply draws AC power from the main electrical supply. The higher the power factor—up to a maximum score of 1—the lower your operating cost.

Efficiency @ Voltage—Efficiency describes how good a power supply is at converting the AC power it draws from your main electrical supply into DC power. High-efficiency power supplies cost less money to operate and produce less heat, meaning cooler temperatures in your electrical cabinet.

Cannot Be Sold To—Power supplies that cannot be sold to the regions listed are restricted by local energy efficiency requirements.

	Output														Mounting
	No. of Power Connections	Voltage	Voltage Adjustment Range, V DC	Current	Power	Max. Noise Peak-to-Peak	Power Factor @ Voltage	Efficiency @ Voltage	Ht.	Wd.	Dp.	Certification	Electrical Protection Type	Cannot Be Sold To	Fasteners Included	Number of Holes		Each
Single Phase—100V AC to 240V AC Input Voltage







				Screw-Terminal Input and Output Connection

				1	3.3V DC	2.85 to 3.6	6 amp	19.8 W	80 mV DC	Not Rated	75% @ 230V AC	1.1"	2"	3.1"	C-UL Recognized Component CE Marked UL Recognized Component	Overcurrent, Overload, Overvoltage	California, Vermont	No	4	7010K159	000000


				1	3.3V DC	3 to 3.6	10 amp	33 W	80 mV DC	Not Rated	75% @ 230V AC	1.4"	3.8"	3.9"	C-UL Recognized Component CE Marked UL Recognized Component	Overcurrent, Overload, Overvoltage	California, Vermont	No	4	7010K161	00000
				2	3.3V DC	3 to 3.6	20 amp	66 W	80 mV DC	Not Rated	75% @ 230V AC	1.5"	3.8"	6.3"	C-UL Recognized Component CE Marked UL Recognized Component	Overcurrent, Overload, Overvoltage	California, Vermont	No	5	7010K162	00000
				2	3.3V DC	3 to 3.6	30 amp	99 W	80 mV DC	Not Rated	75% @ 230V AC	1.5"	3.9"	7.8"	C-UL Recognized Component CE Marked UL Recognized Component	Overcurrent, Overload, Overvoltage	California, Vermont	No	7	7010K163	00000
				2	3.3V DC	3 to 3.6	40 amp	132 W	80 mV DC	Not Rated	67% @ 115V AC 68% @ 230V AC	1.6"	3.9"	7.8"	C-UL Recognized Component CE Marked UL Recognized Component	Over Temperature, Overcurrent, Overload, Overvoltage	California, Vermont	No	10	7010K164	00000

Remote On/Off Power Supplies


Single Phase, Screw-Terminal Input and Output Connection	Single Phase, Screw-Terminal Input and Quick-Disconnect-Terminal Output Connection

Save power by switching these power supplies on and off remotely, so devices only run when they're needed. Use them to convert AC voltage to DC to power electronic equipment ranging from simple prototypes to complex industrial automation and process control equipment. Mount them to a surface inside your device’s enclosure.

Besides turning them on and off, these power supplies have two other remote capabilities. Remote voltage sensing lets them compensate for any voltage that’s lost as it travels across the wires, ensuring that devices get the correct voltage. They also send a signal if the voltage drops, the cooling fan fails, or they exceed the maximum current, load, voltage, or temperature.

So you don’t accidentally touch internal components and shock yourself, these power supplies have their own housing. They're good to use in spots where you occasionally need to access the inside of your device’s enclosure, since the housing also protects the power supplies themselves.

For output wire connections, they have either standard screw terminals or quick-disconnect terminals. Choose quick-disconnect terminals if you have wires with ring terminal ends. To connect them, slide a screw through the hole in the quick-disconnect terminal, slip the ring terminal from your wire over the screw, and tighten a nut on the end of the screw to hold everything in place. Screws, nuts, and ring terminals are not included.

All of these power supplies use switching regulation, which means they produce the stated voltage despite fluctuations in your input power and the power being drawn by your system, and they won’t become too hot. In addition to sending a signal, if you exceed the maximum current, load, voltage, or temperature, these power supplies shut down to protect both the power supply and the connected equipment.

They're UL and C-UL Recognized Components, TUV Rheinland Certified, and CE Marked so you know they meet stringent safety standards.

	Output
	Voltage, V DC	Voltage Adjustment Range, V DC	Current, amp	Power, W	Max. Noise Peak-to-Peak, mV DC	Power Factor @ Voltage	Efficiency @ Voltage	Electrical Connection	Ht.	Wd.	Dp.		Each
Single Phase—100-240V AC Input Voltage







				Screw-Terminal Input and Output Connection

				3.3	2.64 to 3.96	60	198	120	0.98 @ 100V AC 0.95 @ 200V AC	68% @ 100V AC 71% @ 200V AC	8-Pin JST Automotive 10-Pin JST Automotive	1.65"	4.02"	6.69"	6896N11	0000000


				3.3	2.64 to 3.96	120	396	120	0.98 @ 100V AC 0.95 @ 200V AC	70% @ 100V AC 72% @ 200V AC	8-Pin JST Automotive 10-Pin JST Automotive	2.4"	4.72"	7.48"	6896N44	000000




						Screw-Terminal Input and Quick-Disconnect-Terminal Output Connection

						3.3	2.64 to 3.96	200	660	120	0.98 @ 100V AC 0.95 @ 200V AC	74% @ 100V AC 76% @ 200V AC	8-Pin JST Automotive 10-Pin JST Automotive	2.4"	5.91"	9.45"	6896N12	000000


						3.3	2.64 to 3.96	300	990	120	0.98 @ 100V AC 0.95 @ 200V AC	72% @ 100V AC 75% @ 200V AC	8-Pin JST Automotive 10-Pin JST Automotive	2.4"	7.01"	10.55"	6896N13	00000000

Molex Sockets


8-Pin JST Automotive Connection	10-Pin JST Automotive Connection

To use the remote features of these power supplies, you’ll need a wire connector.

8-Pin JST Automotive Connection—8-pin JST automotive connectors enable remote on/off, voltage sensing, and signaling functionality using the power supply’s auxiliary power output.

10-Pin JST Automotive Connection—10-pin JST automotive connectors only add remote on/off and voltage sensing functionality. They require an external power source, such as a battery or another power supply.

	Aux. Output
Electrical Connection	Voltage, V DC	Current, amp	Lg.	Output Features		Each
8-Pin JST Automotive	12	1	19 5/8"	Remote On/Off, Remote Signaling, Remote Voltage Sensing	6896N43	00000
10-Pin JST Automotive	—	—	19 5/8"	Remote On/Off, Remote Voltage Sensing	6896N42	0000

EMI Filtering IEC Connectors with Integrated Power Supply

Change AC voltage to DC voltage and bring power to electronic devices while protecting them from harmful electromagnetic interference (EMI). Even with their built-in power supply, these connectors have the same overall footprint as those without a power supply. All are for use with standard IEC power cords. Commonly used to convey power from wall outlets, you won’t have to wire your devices to an external power source. Instead, wire these connectors into your device with the terminals on the back of each connector.

For fast wire connections, these connectors have quick-disconnect terminals. The terminals slide together with the quick-disconnect terminals on your wiring and are easily disconnected by hand, but still provide a strong hold.

All of these connectors use switching regulation, which means they produce the stated voltage despite fluctuations in your input power and the power being drawn by your system, and they won’t become too hot. If you exceed the maximum voltage or load, the connectors will shut down to protect both the power supply and the connected device. They also meet the voltage requirements for use in a SELV (separated extra low voltage) circuit.

These connectors meet U.S. and international standards for safety. They also meet UL 94 V-0, which means they self-extinguish within 10 seconds if they catch fire, and won’t spread the fire by dripping. All have Class I shock protection—they're insulated and have a protective ground to prevent electrical shocks.

Screw-On Male Receptacles

Image of Product. Front orientation. Power Supplies. EMI Filtering IEC Connectors with Integrated Power Supply.

Quick-Disconnect

Terminals

IEC C14

Maximum Output Noise Peak-to-Peak—Maximum output noise is also known as ripple noise. When power supplies convert AC voltage to DC voltage, some noise from the AC voltage will carry into the output. While this noise won't affect most applications, it can interfere with other signals in extremely sensitive audio equipment and high-precision measuring and testing equipment. The lower the output noise, the less interference it creates.

		Output						For Panel Cutout
	IEC Connector Type	Voltage, V DC	Current, amp	Power, W	Max. Noise Peak-to-Peak, mV DC	Power Factor @ Voltage	Efficiency @ Voltage	Ht.	Wd.	Temp., ° F	Electrical Protection Type		Each
Single Phase—100-240V AC Input Voltage



		C14	3.3	1.51	5	60	0.6 @ 115V AC 0.45 @ 230V AC	76% @ 230V AC	0.9"	1.2"	-10 to 140	Overcurrent, Overload, Overvoltage	6260N171	000000

DC to DC Power Converters

When your power supply sends out DC power at a higher voltage than you need, change to the proper voltage with these converters. They’re often used when a specific component, such as a sensor, requires a lower voltage than surrounding equipment. Use them to correct power supplies that send uneven voltages, too—they provide electricity at a stable, consistent voltage. They mount on flat surfaces, and are commonly fastened inside enclosures.

If you exceed the current limit, these converters will shut down to protect your equipment. Some converters have overvoltage protection, so they’ll do the same if you exceed voltage limits.

Screw-Terminal Input and Output Connection—1 Output Power Connection

Image of Product. Front orientation. Power Converters. DC to DC Power Converters.

Maximum Output Noise Peak-to-Peak—The lower a converter’s maximum output noise, also known as ripple noise, the less electronic interference it creates. These converters will work in most applications.

	Output
	Voltage, V DC	Voltage Adjustment Range, V DC	Current, amp	Power, W	Max. Output Noise Peak-to-Peak	Ht.	Wd.	Dp.	Mounting Fasteners Included	Electrical Protection Type		Each
Single Phase—9V DC to 36V DC Input Voltage



		3.3	3 to 3.6	4	13.2	120 mV DC	3.7"	2.1"	1.1"	No	Overcurrent	6955N113	000000


		3.3	3 to 3.6	7.5	24.8	120 mV DC	4.6"	2.1"	1.1"	No	Overcurrent, Overvoltage	6955N121	00000


		Single Phase—18V DC to 76V DC Input Voltage



				3.3	3 to 3.6	4	13.2	120 mV DC	3.7"	2.1"	1.1"	No	Overcurrent	6955N117	00000


				3.3	3 to 3.6	7.5	24.8	120 mV DC	4.6"	2.1"	1.1"	No	Overcurrent, Overvoltage	6955N125	00000