TT Electronics is an innovative global electronics company supplying the world's leading manufacturers in the transportation, industrial, aerospace, defence and medical markets. The TT Electronics technology portfolio is one of the most comprehensive in the industry, supplying passive components (fixed and variable resistors, magnetics), discrete semiconductors (optoelectronics, diodes, MOSFETs) and connectors from brands including AB Connectors, BI Technologies, IRC, Optek, Semelab and Welwyn Components.
Select from below to view products by brand or category.
The Technology Showcase brings together TT Electronics' key products within selected vertical markets: medical, defence & aerospace, industrial, transportation and energy. Highlighting their latest and most innovative products, the Showcase helps you to choose the right products to develop your applications.
Learn More >>
Welwyn / TT ElectronicsLRMA Low Resistance Metal Alloy Resistors offer metal element construction, good surge performance, low TCR down to 75ppm/°C, and are AEC-Q200 certified for automotive applications. Specific applications include power supplies, small motor control, medical PSU, and battery chargers.
TT electronics Welwyn WPRT Series Wirewound Resistors feature 10 - 50W power
range, up to 250W overload, quick connect or soldered tags, optional
mounting bracket, and flameproof construction. They are designed as a
high power resistor with high overload rating and optimized
surge energy capacity, and are designed for high power energy
conversion systems in such areas as electric vehicles and motor drives.
Ideal markets for TT Electronics Welwyn WPRT Series Wirewound Resistors include
industrial, automotive, and energy.
Welwyn / TT Electronics WHS Series Wirewound High Surge Resistors offer the industry's highest surge energy ratings from 2W to 7W sizes. The WHS2, rated at 2W, is the smallest resistor of its type on the market and provides surge energy ratings of 0.9 to 5.8J. WHS Series Wirewound High Surge Resistors are available rated 3, 5 and 7W, in resistance values up to 330Ω and taking energy ratings up to 60J. Designers have greater flexibility with the additional options of radial, goalpost, lancet and SMD Z-form leads. All the WHS Series Wirewound High Surge Resistors benefit from UL94-V0 flameproof protection and operate over a wide -55º to +155ºC temperature range. Suitable for a wide range of pulse applications, the Welwyn / TT Electronics WHS Series
Wirewound High Surge Resistors are flameproof, and are aimed at designers of power supplies requiring a line input resistor for inrush limiting and protection.
IRC / TT Electronics OARS Series Open Air Sense Resistors are rated for 1W at 85oC (2W at 25oC) with resistance values from 0.002Ω to 0.05Ω with tolerances down to +1%. They feature TCRs as low as +20ppmoC and inductance values in the single‐digit nanohenry range. Operating range is ‐40ºC to +125ºC. IRC / TT Electronics OARS Series Open Air Sense Resistors offer compliant terminations that allow them to expand and contract with the PC board's thermal cycling, enabling them to meet or exceed the 1,000 - 2,000 cycles required by most automotive manufacturers. This thermal cycling stresses the solder joints of conventional flat chip resistors, which can often cause failure. The unique lead form of the OARS resistors provides an inherent advantage in compliance to the mechanical stress caused by thermal cycling. The welded copper terminals in the OARS Series Open Air Sense Resistors also provide a low resistance terminal to enhance reliable performance for demanding applications.