GW Instek GPD-3303D

Last updated: November 9, 2026

GW Instek GPD-3303D

A triple-output linear supply from a lab brand, outclassed here on price and setting resolution.

  • 30 V / 3 AOutput
  • 195 WPower
  • LinearType
  • USBPC control
Check price at Amazon$719

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Three linear outputs with tracking series and parallel modes
  • USB control
  • Four stored setups
Cons
  • Coarse 0.1 V setting steps
  • Expensive next to the Rigol and Siglent triples
  • No published warranty

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model numberGPD-3303D
Output
TypePower supply
RegulationLinear
Channels3
Channel ratings30 V/3 A, 30 V/3 A, 2.5/3.3/5 V/3 A
Max voltage30 V
Max current3 A
Rated power195 W
Ripple and noise1 mVrms
Precision
Setting resolution100 mV / 10 mA
Readback resolution100 mV / 10 mA
Control
PC interfacesUSB
Stored setups4
Build
Weight15.4 lb

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