Electronic Components

Resistors run across twelve sub-categories: precision and ultra-precision, Z-foil, current sensing and low resistance, high-voltage, high-temperature, high-energy, non-magnetic, power, standard, thermosensitive, networks and voltage dividers, then load banks. Custom values are available on several lines.

Thermistors are held in two families: NTC types for temperature sensing and compensation, then inrush current limiting types that control the switch-on surge. Both work from the same principle, that resistance falls as the device heats.

Junction field-effect transistors for low-noise analogue work: input stages, buffers, current sources and analogue switching. Low gate leakage and low noise at low frequency are the defining characteristics; customisation is available against specific parameter requirements.

Galvanic isolation for high-speed digital signals, in four types: active-input, passive-input, DC-correct and isolated bus transceivers. Transient immunity is specified at a minimum of 100kV/µs on the IL71x series; the input type decides how much drive circuitry the design provides.

Three families sit here: reed relays, reed switches and solid state relays. The reed types give a hermetically sealed contact with very low leakage, for instrumentation and test switching. Solid state types switch through a power MOSFET output.

Ceramic disc and multilayer capacitors run across four sub-categories: high-temperature, high-voltage, non-magnetic and low voltage. Surface-mount and through-hole formats appear throughout, spanning a wide range of capacitance, voltage rating and dielectric class. Custom variants are available on selected series.

Surface-mount attenuators for RF and microwave signal paths, in high-frequency, high-precision and thermo-variable types. Selection turns on frequency range, attenuation value, power handling and whether the attenuation needs to track temperature.

Optocouplers and opto-isolators transfer a signal across an optical barrier, so the two sides of a circuit share no electrical connection. Available in several circuit types and isolation ratings, for control, interface and feedback paths.

Milliohm meters and their accessories, for measuring low resistance where lead and contact resistance would otherwise dominate the reading. Used on the bench, in production test and in field verification of resistors, shunts and bonded joints.

Terminations and power splitters for RF and high-frequency lines, where an unmatched end reflects energy back down the path. Rated by impedance, frequency range and power handling for communication and test systems.

Voltage references and regulators for supply and reference generation, where the accuracy has to hold across the whole operating range. Selected on output accuracy, temperature drift, dropout and load regulation.

Resistance and thermoelectric alloys supplied as raw material, for manufacturers making their own resistive or sensing elements. Chosen on resistivity, temperature coefficient and long-term stability.