MASS SPECTROMETRY POWER SUPPLY MODULES
Ultra Low Noise, High Stability
- Output Voltage: 3 to 30 kV
- Output Current: 0.25 to 10 mA
- Output Power: 7.5 to 10 W
- Single polarity
Especially for high resolution mass spectrometry
The KAS series is a compact high-voltage power supply featuring ultra-low noise and highly stable output, making it an ideal choice for Mass Spectrometry (MS) and Electron beam/Ion beam applications.
Its high performance is ideal for biasing, deflecting, or focusing electron and ion beams.
FEATURES AND BENEFITS
- Ideal for Scanning Electron Microscope (SEM) and Mass Spectrometry (MS)
- High stability 10 ppm/H
- Ultra-low noise
- Output voltage and current monitoring
LONG-TERM STABILITY TEST
KAS series, a high-voltage power supply module, achieved exceptional performance levels in the long-term stability test, highly exceeding expectations.
The stability test shows that the KAS series outperforms competitors.
The report includes a stability graph of the long term as 8 hours.
APPLICATIONS
Models
| Model | Output voltage | Output current |
|---|---|---|
| KAS-3P3.3 | 0 to 3 kV | 3.3 mA |
| KAS-5P2 | 0 to 5 kV | 2 mA |
| KAS-10P1 | 0 to 10 kV | 1 mA |
| KAS-20P0.4 | 0 to 20 kV | 0.4 mA |
| KAS-30P0.25 | 0 to 30 kV | 0.25 mA |
| Model | Output voltage | Output current |
|---|---|---|
| KAS-3N3.3 | 0 to -3 kV | 3.3 mA |
| KAS-5N2 | 0 to -5 kV | 2 mA |
| KAS-10N1 | 0 to -10 kV | 1 mA |
| KAS-20N0.4 | 0 to -20 kV | 0.4 mA |
| KAS-30N0.25 | 0 to -30 kV | 0.25 mA |
- Discontinued models
-
The following model is no longer available as we have stopped production and sales.
Specifications
- Input voltage
- 24 Vdc
- Output voltage control
- External 5 kΩ potentiometer or external control voltage (Vcon-in) 0 to 10 Vdc
Options
- -LMH
-
MHV connector (only up to 5 kV model)
- -LRs
-
Digital control via RS-232C
- -LRs4
-
Digital control via RS-485
- -LSH
-
SHV connector (only up to 5 kV model)
*Note that you cannot select -LMH and -LSH options or -LRs and -LRs4 options at the same time.
How to Order
When ordering, add Option No. in the following order by alphabet to Model No.
Example: KAS-30P0.25-LMHRs, KAS-5N2-LRs4SH
Diagram
Connection diagram
Dimensions
150 x 100 x 55mm (5.91" x 3.94" x 2.17")
175 x 100 x 68mm (6.89" x 3.94" x 2.68")
200 x 130 x 75mm (7.87" x 5.12" x 2.95")
For details, download the datasheet below.
Download
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-
KAS series Datasheet
Date: 2025-05-02 rev 12
PDF (1,039 KB)

-
High Voltage Power Supplies -For MASS SPECTROMETRY- Selection Guide
Date: 2023-07-31 Rev. 06
PDF (6,757 KB)

-
High Voltage Power Supply Modules Selection Guide
Date: 2025-06-30 rev.18
PDF (4,914 KB)

-
KAS series Long term stability test (White paper)
Date: 2023-11-13 rev.00
PDF (212 KB)

-
Safety and Usage of High voltage Power supply
Date: 2025-09-08 rev 04
PDF (602 KB)

-
KAS/KAS-R series Instruction Manual (LRs, LRs4 option)
Date: 2021-05-12 rev. 0.1
PDF (491 KB)

-
KAS series (20kV) 3D MODELS (STEP, IGES)
Date: 2024-10-15
ZIP (414 KB)

-
KAS series (30kV) 3D MODELS (STEP, IGES)
Date: 2024-10-15
ZIP (426 KB)
Login Required

-
KAS series Datasheet
Date: 2025-05-02 rev 12
PDF (1,039 KB)

-
High Voltage Power Supplies -For MASS SPECTROMETRY- Selection Guide
Date: 2023-07-31 Rev. 06
PDF (6,757 KB)

-
High Voltage Power Supply Modules Selection Guide
Date: 2025-06-30 rev.18
PDF (4,914 KB)

-
KAS series Long term stability test (White paper)
Date: 2023-11-13 rev.00
PDF (212 KB)

-
Safety and Usage of High voltage Power supply
Date: 2025-09-08 rev 04
PDF (602 KB)

-
KAS/KAS-R series Instruction Manual (LRs, LRs4 option)
Date: 2021-05-12 rev. 0.1
PDF (491 KB)

-
KAS series (20kV) 3D MODELS (STEP, IGES)
Date: 2024-10-15
ZIP (414 KB)

-
KAS series (30kV) 3D MODELS (STEP, IGES)
Date: 2024-10-15
ZIP (426 KB)
On this website, we provide only the latest versions of information and instruction manuals for our products. Therefore, the newest versions of manuals on the website may differ from those that came with products you purchased in the past.
