Vishay recently announced a new QPL series of ultra-high-precision Accutrim trimming potentiometers designed to meet and exceed the requirements of MIL-PRF-22097 Char. F.
For avionics, military and space applications (AMS), the QPL-approved RJ26-style devices offer low end-to-end TCR of ±10 ppm/°C from –55°C to +150°C, +25°C reference, and ±25 ppm/°C through the wiper, load life stability of 0,1% under full rated power at +85°C for 1000 hours, and less than 0,05% typical settability.
The new 1242 series features a bulk metal foil resistive element that possesses inherent temperature and load life stability. Their advanced, virtually backlash-free (<0,005%) adjustment mechanism makes them easy to set quickly and accurately, and maintains that setting through temperature cycling and vibration, as well as thermal and mechanical shock.
Unlike wirewound trimmers that have a single-point contact with the wound element, Vishay Foil trimmers have a multifingered wiper traversing a flat element. The wiper engagement pressure can be much higher when the load is spread out over various wiper tangs, so the sensitivity to shock and vibration in Foil-based trimmers is virtually eliminated for most applications.
In addition to their low TCR and excellent load life stability, the trimmers feature a resistance range from 20 Ω to 5 kΩ, resistance tolerance of ±10%, and 0,25 W power rating at +85°C. The devices are essentially non-inductive with rise times as fast as 1 ns for high-frequency applications. For increased reliability, the trimmers provide high ESD immunity, withstanding electrostatic discharges up to 25 kV.
The 1242 trimmers feature gold-plated terminations with tin/lead terminations on request. Each device is inspected for short-time overload, immersion, resistance tolerance and end resistance. They are sealed against moisture and are available with options including special markings, burn-in and screening operations.
New SiC power MOSFET Future Electronics
Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.
Read more...Satellite IoT through non-terrestrial networks Future Electronics
Editor's Choice Telecoms, Datacoms, Wireless, IoT
Non-terrestrial networks fill cellular coverage gaps in remote areas by extending terrestrial networks and are not subject to disruptions from natural disasters or sabotage.
Read more...1D Time-of-Flight sensor Future Electronics
Telecoms, Datacoms, Wireless, IoT
ams OSRAM has introduced its TMF8806, a 1D Time-of-Flight sensor that has been developed to remove the barriers of previous single-zone dToF devices.
Read more...Easy installation panel mount assembly Future Electronics
Enclosures, Racks, Cabinets & Panel Products
NKK’s new easy installation Panel Mount Assembly (the BYB201-470) consists of a PCB, resistor, connector, and a straight PC adaptor.
Read more...Cutting-edge hybrid capacitors Avnet Silica
Passive Components
Panasonic Industry recently announced the launch of the ZVU Series Hybrid Capacitors, a cutting-edge solution tailored to meet the escalating demands of advanced electronic systems.
Read more...Low-profile tantalum chip capacitors Electrocomp
Passive Components
These general-purpose tantalum capacitors from Kyocera AVX are available in multiple case sizes with low profile options.
Read more...PhotoMOS relays Future Electronics
Opto-Electronics
The AQY221R2SX and AQY221R2S PhotoMOS from Panasonic Industry ensures excellent characteristics and high-speed switching performance.
Read more...MEMS air quality sensor Future Electronics
Test & Measurement
Bosch Sensortec’s BME690 is the latest-generation gas sensor that combines advanced monitoring capabilities with innovative artificial intelligence functionality.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version