SpellmanHV ML430 Mass Spectrometry High Voltage Power Supply


  • High Voltage Lens Power Supply
  • Dual Positive and Negative Outputs
  • Low Cost, Compact Air Insulated Design
  • UL Approved to UL61010-1

*Note: All specifications are subject to change without notice. Please consult the English PDF version of this datasheet for the most up-to-date revision.

CE RU Marking

Mass Spectrometry High Voltage Power Supply

Spellman’s ML430 power supply module has been designed specifically to drive high voltage amplifiers. This compact, low cost, SMT based high performance module is printed circuit board mountable. Its dual output is ideal for amplifier driver requirements together with electrostatic lenses, deflectors and biasing supplies.

This voltage regulated, current limited, fixed, dual output unit provides up to 25mA of load current. The ML430 is fully protected against arc and short circuit conditions. The grounded metal case provides both shielding and heat sinking functions. An Enable feature is provided, allowing simple remote operation of the supply. The ML430 is CE and UL approved.

Typical applications:

  • High Voltage Amplifiers 
  • Electrostatic Lenses


(Ref. 128036-001 REV. K)  

Input Voltage:

+24 Vdc, ±1.2Vdc

Input Current:

≤ 1.2 amp

Output Voltage:

Output 1-Positive:

+430 volts fixed. Accuracy ±7%

Output 2-Negative:

-430 volts fixed. Accuracy ±7%

Accuracy specified over full temperature, input voltage and load ranges

Output Current:

12mA maximum – Output 1-Positive

25mA maximum – Output 2-Negative

Line Regulation: (typical)

±0.1% – Positive output

±1.0% – Negative output

Load/Cross Regulation: (typical)

±0.1% – Positive output

±3.5% – Negative output

Output Current Limit:

An auto-recovering short circuit fold back limit is employed.

Fully arc protected, capable of 10 arcs in 5 seconds.


≤ 0.5% p-p of full rated output voltage


≤ 0.25% per hour, constant operating conditions after 1 hour warm up

Temperature Coefficient:

≤ 200ppm per degree C


Temperature Range:

Operating: 0°C to 50°C

Storage: -35°C to 85°C


10% to 90% RH, non-condensing


Unit must be mounted in free air, in any position with the exception of inverted (pins up). Forced air cooling is recommended


0.984. H X 2.362. W X 2.362. D (25mm x 60mm x 60mm)


3.31 oz. (94g)

Regulatory Approvals:

Compliant to EEC EMC Directive. Compliant to EEC Low Voltage Directive.

Tables & Diagrams



ML430 Mass Spectrometry High Voltage Power Supply (Image 2)


ML430 Mass Spectrometry High Voltage Power Supply (Image 3)


ML430 Mass Spectrometry High Voltage Power Supply (Image 4)


How to Order:
PART NO.: ML430P/N16/24