Product Overview:
34903A is a universal switch module for the 34970A/34972A data acquisition/switching unit. It has 20 independent single-pole double-throw (SPDT) relays, which are used to supply power cyclically to the tested product, control indicator lights and status lights, as well as to drive external power relays and solenoids. By combining it with matrix and multiplexer modules, a custom switch system can be constructed. Its 300 V, 1 A contacts can handle up to 50 W of power, sufficient to meet the requirements of many power line switch applications.
Feature:
20-channel high-density design, each channel supports 300V AC/DC voltage, 1A AC/DC current and 50W power, meeting the majority of power line switching requirements.
The switching speed reaches 120 times per second, with no-load life of 100 million times and rated load life of 100,000 times, balancing efficiency and durability.
Channel-to-channel and channel-to-ground isolation reaches 300V, insulation resistance exceeds 10GΩ, bias voltage is lower than 3μV, ensuring high-precision application stability.
The initial closing channel resistance is less than 0.2Ω, bandwidth is 10MHz, channel-to-channel crosstalk is -45dB, signal transmission loss is low and interference resistance is strong.
The operating temperature range is 0 to 55℃, storage temperature is -20 to 70℃, suitable for multiple environmental testing scenarios, with wide practicality.
