EBM20N5/24
- Triode Supply for Electron Beam Columns
- High Precision, Low Noise, Ultra Stable
- Over Current/Voltage Protection
- Arc and Short Circuit Protection
- OEM Customization Available
- UL Certified, CE Marked and RoHS Compliant
Certifications & Compliance
OEM Module for SEM Applications
The EBM20N5/24 powers E-Beam Columns in Thermionic Scanning Electron Microscopes providing acceleration, bias and filament sources in a single compact package. Spellman’s proprietary HV packaging and encapsulation technology gives dramatic improvements in size, cost and performance compared to other SEM power supply offerings. The EBM20N5/24 provides a highly regulated, low noise, ultra stable accelerator supply programmable from 0 to -20kV at 250uA. The EBM20 has floating bias and filament supplies referenced to the accelerator. Programming signals utilize differential analog inputs to minimize external noise and offset voltages effects. A ground referenced accelerator current monitor is provided. The EBM20 is arc and short circuit immune, along with over voltage and over current protection.
- Specifications
- How to Order
- Downloads
Specifications
- Input Voltage:
+24Vdc, ±5%, 1.5A maximum - INTERFACE:
Input:
Analog control for accelerator, filament and bias - Dimensions:
10.63˝H x 2.36˝W x 7.87˝D (270mm x 60mm x 200mm) excluding any mounting brackets - Weight:
<10 lbs. (4.5kg) - Regulatory Approvals: Compliant to EEC Low Voltage Directive. UL/CUL recognized, File E354595. RoHS Compliant.
| Output | Accelerator | Filament | Bias |
| Voltage - Max | -20kV wrt ground | 4V centre voltage wrt accelerator | +1.5kV wrt accelerator |
| Current -Max | 250μA | 3A | 150μA |
| Accuracy | ±1% from -500V to -20kV | ±3% of full scale | ±3% of full scale |
| Load regulation | <±100ppm, 20μA to 250μA load change | <1% for 10% change in load resistance | N/A |
| Line Regulation | <±100ppm for 10% line change | <±1% for 10% line voltage change | <±0.1% for 10% line change |
| Ripple - Max | <20ppm p-p | <0.1% p-p | <0.1% p-p |
| Temperature Coeff | <100ppm/°C | <300ppm/°C | <1000ppm/°C |
| Stability | 30ppm/3 minutes at 100μA load current after 1 hour warm up | 100ppm/10 minutes | 1%/10 minutes |
How to Order
| How to order: | ||
|---|---|---|
| Standard: PART NO.:EBM20N5/24 | ||
| HV Cable: PART NO.:HVC30/3IS/LL1650 (1.65m Cable) |
Downloads
Typical applications:
- Scanning Electron Microscope
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