High Voltage Solutions
SM Series
PCB-Mount DC/DC High Voltage Converters
Compact, fully encapsulated converters for direct PCB mounting. Six standard models provide 250 V to 3 kV outputs in a 0.98 cubic-inch package, with floating output connections for positive or negative polarity operation.
250 V-3 kVOutput range
Up to 0.5 WOutput power
0-12 VDCInput range
0.98 in³Package volume
Key capabilities
- Output proportional to input voltage
- Floating input and output
- Short-circuit and reverse-polarity protection
- Solid encapsulation for reliable operation
- Four-pin PCB mounting
Typical applications
- Inkjet printers
- Photodetectors
- Gas chromatography
- CRT focus and bias
- Geiger tubes and ionization chambers
- Photomultiplier tubes
Standard model guide
| Model | Output voltage | Output current |
|---|---|---|
| SM-2.5 | 0-250 VDC | 2 mA |
| SM-5 | 0-500 VDC | 1 mA |
| SM-10 | 0-1000 VDC | 250 µA |
| SM-15 | 0-1500 VDC | 200 µA |
| SM-25 | 0-2500 VDC | 200 µA |
| SM-30 | 0-3000 VDC | 100 µA |
Select the model for the required output voltage and current. Add -RC when the RoHS-compliant version is required.
Specifications
Electrical characteristics
Input voltage0-12 VDC
Input current85 mA nominal at full load
Output voltageProportional to input; approximately linear from 10% to maximum output
Load regulation5% from half load to full load
Ripple0.5% peak-to-peak typical
Isolation strength>3500 VDC input to output
Physical and environmental
Dimensions1.25 x 1.25 x 0.63 in maximum
Volume0.98 cubic inch
WeightApproximately 1.5 oz
PackagingSolid encapsulation
TerminationsFour 0.040 in diameter PCB pins
Temperature-20 to +70 °C
Integration and configuration
PCB integration
- Apply 0-12 VDC across the IN positive and negative pins
- Connect the load across the floating OUT positive and negative pins
- Use approximately 0.045 in PCB mating holes
- Maintain suitable high voltage clearance around the output pins
- Add an external output capacitor when lower ripple is required
Available configurations
- Positive or negative output connection
- Higher-power versions in the same package size
- Custom output configurations
- RoHS-compliant version with -RC suffix
How to order
FormatSM-[Voltage Code][-RC]
ExampleSM-10-RC1 kV | 250 µA | RoHS compliant
PCB mounting and pin arrangement
Dimensions are in inches with millimeters in brackets. The drawing shows the bottom and side views of the standard package.
SM Series resources
Download the data sheet or contact Gamma for configuration assistance.