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High-temperature passive oscilloscope probes rated up to 400 V, 350 MHz bandwidth, and 155°C operation—engineered for reliable signal testing inside thermostatic chambers and extreme environments.
The PMK PHT Series is a line of passive single-ended probes designed specifically for use in extreme temperature and humidity conditions. Whether you're performing waveform measurements inside a thermostatic chamber or under thermal cycling environments, these probes maintain signal accuracy and electrical insulation.
With an input withstand voltage of 400 Vrms, and transient overvoltage protection up to 1650 V, these probes provide robust protection for both instrument and operator. The wide DC to 350 MHz bandwidth ensures that even high-speed signals are captured with clarity and minimal distortion.
Unlike conventional probes, the PHT Series offers unmatched resilience with operational stability from –55°C to +155°C, and reliable performance in up to 98% relative humidity—making it a preferred solution in automotive, aerospace, and power electronics testing.
Available in multiple attenuation options (from 1:1 to 10,000:1), these probes offer flexibility in matching your signal levels, input impedance needs, and measurement resolution requirements.
Wide frequency bandwidth up to 350 MHz
Withstands 400 Vrms and 1,650 V transient overvoltage
Exceptional thermal resilience: –55°C to +155°C
Designed for high humidity: up to 98% RH
Available in multiple attenuation ratios from 1:1 to 10,000:1
Ideal for thermostatic chamber and environmental test applications
Manufactured by PMK, a leader in high-performance probe technology
| Parameter | Details |
|---|---|
| Type | Passive Single-Ended Probe |
| Series | PMK PHT Series |
| Bandwidth | DC to 350 MHz |
| Input Withstand Voltage | 400 Vrms (No Category), 1650 V (transient) |
| Attenuation Options | 1:1, 2:1, 5:1, 10:1, 20:1, 50:1, 100:1, 250:1, 500:1, 1000:1, 2000:1, 10000:1 |
| Operating Temperature | –55°C to +155°C |
| Humidity Tolerance | Up to 98% RH (non-condensing) |
| Applications | Thermostatic chambers, high-temp environments |
| Manufacturer | PMK (Germany) |
| Length | 2 meters |
| Safety Rating | Designed for high-stress thermal environments |
These probes are engineered for test professionals who demand high precision and reliability in climatic or thermal testing conditions. The PMK PHT Series ensures your measurements remain stable, even when everything else heats up.