Description
SM7420 Super Megohm Meter for Precision Automated Testing
The SM7420 Super Megohm Meter is a high-precision 4-channel instrument designed for ultra-low current measurement in automated production environments. It is part of Hioki’s SM Series, known for combining industry-leading speed, accuracy, and noise immunity to test passive components like MLCCs, filters, and capacitors. With a minimum resolution of 0.1 fA, the SM7420 ensures precise leakage current measurement even for components with extremely low capacitance.
This meter is perfect for integration into automated testing systems, offering simultaneous 4-channel measurements that drastically improve throughput. High-speed operation at 6000 ps/minute supports mass production requirements, while advanced noise resistance—up to 300 times better than previous models—guarantees stable readings even in electrically noisy environments. This is achieved using a new Super Megohm floating circuit design combined with triaxial connectors.
The SM7420 includes channel-independent low-capacitance contact checks that can detect capacitors with values as small as 0.1 pF, ensuring accurate measurement regardless of component size. Additionally, the contact check frequency and delay settings can be customized per channel, providing flexibility in designing complex automated lines.
Connectivity is versatile with built-in EXT I/O, RS-232C, GP-IB, and USB interfaces, allowing seamless integration into various automated and production monitoring systems. The SM7420 also supports high-speed leakage current testing for MLCC inspection lines, ensuring maximum productivity and reliable quality control.
Engineered for precision, speed, and flexibility, the SM7420 Super Megohm Meter sets a new standard for automated, high-performance leakage current testing in production lines.
Technical Specifications Table
| Specification | Details |
| Product Name | SM7420 Super Megohm Meter |
| Measurement Channels | 4 simultaneous channels |
| Current Resolution | 0.1 fA |
| Noise Resistance | 300x improved over previous models |
| Speed | 6000 ps/minute |
| Contact Check | Channel-independent, low capacitance (0.1–99.99 pF) |
| Connectivity | EXT I/O, RS-232C, GP-IB, USB |
| Applications | MLCC leakage current, capacitors, filters, automated production lines |
| Automation Compatibility | Ideal for integration into automated testing systems |
| Measurement Range | Ultra-low current measurements for passive components |
| Model Number | SM7420 |
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