The 3021 BuckPuck LED power module are a line of true current regulated drivers for powering LEDs. The BuckPuck line of LED drivers are the ideal choice for powering all types of high-brightness and highpower LED packages and led arrays.

The line of BuckPuck LED drivers exhibit high efficiency and require no external current limiting resistors or additional heat sinking for operation. A fast response current-sensing circuit makes the 3021 ideal for applications where flashing or strobe operation of the LED(s) is required.


  • AC or DC input power up to 32 V (24 VrmsAC)
  • 350 mA, 500 mA, 700 mA, or 1.0 constant current output
  • Extremely small form factor (0.83"x0.83"x0.43")
  • Simple 7-Pin SIP connection for through-hole PCB mounting or use with optional wiring harness
  • External analog/digital intansity control (TTL compatible)
  • Optional external potentiometer intensity control(TTL compatible)
  • Optional on-board trim adjustment (40-110%)
  • output short circuit protection up to 15 Seconds
  • Output open circuit protection
  • Pulse and strobe capable(control input)
  • Built-in 5 V reference/output to power logic circuitry or microprocessor


  • Solar & Landscape lighting
  • Architectural lighting
  • Track lighting
  • Automotive & Marine lighting
  • Portable lighting & flashlights
  • point of purchase lighting
  • Desk & reading lamps
  • Signal & marker lighting
  • Flashing & strobe lighting
  • Cabinet & display case lighting
  • Sign & Channel letters

Download Center



Mfr Part#: 03021HEP
Available In: BULK

Wiring Harness with 6 Wires for 3021 & 4015 w/ Potentiometer


Technical Specifications:

See the Download Center for a complete library of supporting documentation.


$4.91 USD (each)
25 - 49 $4.91 (Save 4%)
50 - 99 $4.70 (Save 8%)
100+ $4.27 (Save 17%)

Other quantities & packages (Reels) may also be available


Qty in Stock : 0
Reserve Stock:
Factory Stock: N/A
Factory Lead-Time: N/A
Min. Order Qty: 25
Multiple of: 1
Add to Cart