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Starting From US$ 920

Typical Configuration  

Typical Configuration

E3640A DC power supply, dual range: 0-8V/ 3A and 0-20V/ 1.5A, 30W. GPIB, RS-232

  • E3640A-0EM AC 115V single-phase 3-wire. 115 VAC +/- 11V operation, 47 to 63 Hz
  • W4100-3MW Warranty, 3mth for included accessories
  • R-51B-001-Z Return to Keysight Warranty - 3 years


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Output ratings (@ 0°C to 40°C)

  • Range 1: 0 to 8 V / 3 A
  • Range 2: 0 to 20 V / 1.5 A

Programming accuracy (@ 25°C ±5°C), ±(% output + offset)

  • Voltage: <0.05% + 10 mV (<0.1% + 25 mV for output 2 of E3646/47/48/49A)
  • Current: <0.2% + 10 mA

Ripple & noise 20 Hz to 20 MHz

  • Normal Mode Voltage: <5 mVpp / 0.5 mVrms
  • Normal Mode Current: <4 mArms

Readback accuracy (@ 25°C ±5°C), ±(% output + offset)

  • Voltage: <0.05% + 5 mV (<0.1% + 25 mV for output 2 of E3646/47/48/49A)
  • Current: <0.15% + 5 mA (<0.15% + 10 mA for output 2 of E3646/47/48/49A)


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Keysight basic DC power supplies offer essential features for a tight budget. The single & dual output, 30-100 W GPIB E3640 series provide small, compact size for bench and system use; low output ripple and noise; and built-in measurements and basic programmable features. The Keysight 30W, single output E3640A is a stable and reliable power supply for benchtop and basic automated test applications, and enables versatile solutions for tests that require moderate speed and precision with both GPIB and RS232.

DC power needs to be steady as a rock…like a rock for 15 years. Find out how.

Counterfeits of this or closely related products have been found in the market. To ensure you are purchasing an authentic Keysight product with the quality and performance you expect, purchase through Keysight authorized distribution partners. Click on the “How to Buy or Rent” button, above, to find authorized distribution partners.