NTE Electronics 57-U1, 57-U2 Catalog Page

Universal AC−DC Regulated Adapters

Features

Level VI Efficiency Standard Compliant
Switchable, Multi−Voltage Outputs

57−U1: 3V, 5V, 7.5V, 9V, 12V, 15V @ 1A
57−U2: 3V, 5V, 7.5V, 9V, 12V @ 2.5A

Includes 2 Reversible Polarity 2.1mm x 5.5mm Tips:

Right Angle (57−UA1)
Straight (57−UA2)

Specifications

AC Input

Voltage Range: 100 − 240 VAC
Input Frequency: 50 − 60 Hz
Inrush Current: 50A Max

DC Output

Voltage Range:

57−U1: 3V − 15V
57−U2: 3V − 12V

Current Range:

57−U1: 0.01A − 1A
57−U2: 0.01A − 2.5A

Ripple (at Typ Input Voltage and Load Current) 200mV Max

Environmental

Operating Temperature: 0 to +40 C, Full Load, Normal Operation

Reliability

Insulation Resistance: 50M Min (Primary to Secondary, DC

500V/60s)

MTBF: 30000 Hours

Tip Types

57−UA1

2.1mm x 5.5mm Right Angle

1.35mm x 3.5mm Right Angle

57−UA3

57−UA5

2.5mm x 5.5mm Right Angle

2.1mm x 5.5mm Straight

1.35mm x 3.5mm Straight

2.5mm x 5.5mm Straight

57−UA2

57−UA4

57−UA6

Ordering Information

DC Output

NTE Type No.

57−U1 1A 15 3V, 5V, 7.5V, 9V, 12V, 15V

NEW

57−U2 2.5A 30 3V, 5V, 7.5V, 9V, 12V

NEW

Amps Wattage Output Voltage

Need Power Jacks to go with
your power supply? You can
find them on Page 9.

Instructions

1. Before using, please consult the user guide or study the rating label of your device to determine the correct voltage and current. If 1A is required,
use the 57−U1 and select the correct voltage (3, 5, 7.5, 9, 12 or 15VDC). If 2.5A is needed, use the 57−U2 and select the correct voltage (3,
5, 7.5, 9 or 12VDC).

2. Set the adapter’s switch to the desired voltage BEFORE you connect it to your device.

3. If the adapter is not compatible with the voltage and current requirements of your device, it can cause permanent damage to your device or the
adapter. Also, look for an image like the ones below on your device’s rating label or DC input jack to determine the correct polarity needed.

− +

Requires a positive tip polarity
Align the (+) symbol on the included plug with the
word TIP on the adapter

+ −

Negative PolarityPositive Polarity

Requires a negative tip polarity
Align the (−) symbol on the included plug with the
word TIP on the adapter

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