Components & Connectors Archives - Page 51 of 80

Harwin introduces multi-contact, high current power connector

Tue, Nov 24, 2020

Raising the power levels supported by its product portfolio, Harwin introduces the Kona series of multi-contact, high current connectors that are robust enough to cope with harsh operating conditions.

The 8.5mm pitch connectors’ contacts are capable of delivering 60A of current. This means that applications such as battery charging can be addressed without having to split the current across multiple contacts. Key applications targeted include electric vehicle battery monitoring/management, power control systems, robotics drives, servo controls, unmanned aerial vehicles (UAVs) and satellites.

The contacts in the Kona series connectors are arranged in a single row, with two-, three- and four- contact versions available. The current carrying capacity is such that very little PCB space is used as less contacts are needed to deliver the current. The mating pair consists of a male vertical through-board connector with board mount fixings, and a female cable connector which will accommodate 8AWG gauge cables.

Harwin’s mate-before-lock mechanism prevents any damage occurring during the locking process ensuring the mating elements are fully aligned first. Shrouding on each contact and a fully polarised construction, means that mis-mating is not a possibility, says Harwin.

Kona connectors have a 250 mating cycle lifespan. The design includes stainless steel thumbscrews, which are fitted to the female connector element, and which mean fixing is simple, with no tools required. A contact indicator is also part of the design, makes certain that the connector elements are correctly oriented.

With a maximum voltage rating of 3kV, and a working temperature ranging from -65 to +150 degrees C, Kona connectors are suitable for deployment in difficult environments. They can handle vibrational forces of 20G for a period of 12 hours. In addition, the six-finger beryllium copper contacts prevent any interruption in connectivity, Harwin says.

Explaining the reason for the introduction of the Kona connector series, Harwin’s Ryan Smart, NPI Product Manager, said: “Customers have approached us in need of even more current per contact. The parameters that the Kona series deliver will open up new potential markets for us, and Kona is our highest performing connector to date.”

http://www.harwin.com

> Read More

Automotive -grade proximity sensors prevent false triggers

Tue, Nov 17, 2020

Two integrated automotive-grade proximity sensors with high resolution up to 20 micron for force sensing applications have been released by Vishay Intertechnology. Each combine a photodiode, amplifier and ADC circuitry in a 4.0 by 2.36mm surface mount package with a low 0.75mm profile. The VCNL3030X01 features an on-board infrared emitter (IRED) while the VCNL3036X01 is designed to be used with up to three external IREDs, for which an on-board driver with internal logic is provided.

They are intended for use in automotive, consumer, smart home, industrial, office products and toys. The AEC-Q101-qualified devices provide higher resolution compared to previous generation sensors at a lower cost, says Vishay Intertechnology. The VCNL3030X01 and VCNL3036X01 can be used for force sensing applications in steering wheel controls, laptop smart power buttons and multi-force trackpads, and touchpads for IoT devices and kitchen appliances. The sensors prevent false triggers and even allow users to wear gloves, advises Vishay. The VCNL3036X01 is designed to work with external IREDs, for increased flexibility for product design.

Both VCNL3030X01 and VCNL3036X01 sensors support the I²C bus communication interface and the programmable interrupt function allows designers to specify high and low thresholds, which reduces the continuous communication with the microcontroller. The proximity sensors have selectable 12-bit and 16-bit outputs, and use intelligent cancellation to eliminate crosstalk. There is also a smart persistence scheme which ensures accurate sensing and faster response time. The VCNL3030X01’s emitter wavelength peaks at 940nm and has no visible ‘red-tail’, says Vishay.

The VCNL3030X01 and VCNL3036X01 have an IRED / LED pulse current of 200mA, a supply voltage range of 2.5 to 3.6V and an I²C bus voltage range from 1.8 to 5.5V. For force sensing applications, the sensors offer the flexibility to fine-tune the current for short displacements.

The devices are RoHS-compliant, halogen-free, and Vishay Green.

The VCNL3030X01 and VCNL3036X01 proximity sensors are sampling now and available in production quantities with lead times of six to 12 weeks for large orders.

http://www.Vishay.com

> Read More

MEMS humidity sensor is designed for long term stability

Mon, Nov 09, 2020

A MEMS sensor from Würth Elektronik measures just 2.0 x 2.0 x 0.9mm. The WSEN-HIDS humidity sensor has a temperature-compensated digital output.

It is based on MEMS technology which consists of a dielectric polymer which absorbs or releases water molecules in proportion to the relative humidity in the surroundings, thereby changing the permeability of a capacitor structure. The humidity sensor with integrated analogue-digital converter (ADC) and temperature sensor can be connected to commonly used microcontrollers via a serial peripheral interface (SPI) or I2C interface. There is also a software development kit (SDK), enabling users to individually set data rates and use the interrupt pin.

Its small size and minimal energy requirement make it suitable for use in building automation, cooling systems, heating, ventilation, air conditioning but it can also be used for data loggers, as well as stationary and portable IoT applications.

There is also an evaluation board available from Würth Elektronik. The MEMS sensor delivers calibrated measurement results with accuracy of ±3.5% RH in the 20 per cent to 80 per cent RH humidity range. Data output is in the millisecond range, says Würth Elektronik. Condensate forming on the surface of the polymer structure can be removed by activating a built-in heater. This allows the sensor to generate measured data again within a very short time. The operating temperature range of the robust sensor is -40 to +120 degrees C.

The WSEN-HIDS sensor promotes rapid terminal device development because developers can use a digital output directly via I2C or SPI and do not have to worry about calibration or temperature compensation, commented Vinod Kumar Ramu, product manager at Würth Elektronik eiSos. “The sensor’s interrupt pin can also be used to wake up the microcontroller if the humidity changes” he added. This makes it particularly well-suited for economical and low maintenance monitoring functions.

The current consumption of the humidity sensor is 8.9 microA in continuous operation with measurement data available every second. When used with a CR2032 button cell with 230 mAh capacity, this corresponds to a battery life of about three years, reports Würth. By reducing the sampling rate, applications can stay maintenance free for a longer period.

For terminal devices, the miniaturised WSEN-HIDS sensor allows manufacturers to integrate data evaluation for humidity and temperature.

The sensor is now available from stock without a minimum order quantity as a belt section or tape and reel package.

Würth Elektronik eiSos Group manufactures electronic and electromechanical components for the electronics industry. Würth Elektronik eiSos is one of the largest European manufacturers of passive components and is active in 50 countries, with production sites in Europe, Asia and North America supplying customers worldwide.

The company’s product range includes EMC components, inductors, transformers, RF components, varistors, capacitors, resistors, quartz crystals, oscillators, power modules, wireless power transfer, LEDs, sensors, connectors, power supply elements, switches, push-buttons, connection technology, fuse holders and solutions for wireless data transmission.

http://www.we-online.com

> Read More

Temperature compensated RTC has I2C interface

Thu, Oct 22, 2020

Claimed to offer the world’s best time accuracy across industrial temperature range at low current consumption, the RV-3032-C7 real time clock (RTC) module has been released by Micro Crystal. The compact RTC module has a custom IC and integrated quartz crystal resonator and sets new standards in size, claims the company. It is half the footprint of a uSOP-8 package, with no additional external components required. It is also claimed to offer the best accuracy (±0.26 s/day at -40 to +85 degrees C operating temperature). Low current consumption (160nA timekeeping mode) and power management capabilities are other features.

The RV-3032-C7 is suitable for applications requiring always-on timekeeping functions, as well as compliance to stringent clock accuracy over time, wide temperature range, and long battery life. Typical examples are smart metering and other similar industrial or consumer applications, such as wearables and IoT devices.

Power management features include a wide supply voltage range (1.2 to 5.5V), automatic backup switch, versatile charge pump and programmable trickle charger. The RTC module can be coupled with a small sized, low capacity, rechargeable battery, or a low cost coin cell power unit which will reduce the overall dimensions and the manufacturing cost of the end product while optimising the life of the battery, advises Micro Crystal.

The RV-3032-C7 includes a quartz-based digital temperature controlled crystal oscillator (DTCXO).

“The design team has applied their 40 years’ of frequency control expertise to develop [the module] . . . . Besides all the standard RTC features, it includes multiple extra functions, like data protection through password, and MHz output frequency, now available for the first time in the market in such a tiny device,” said Hans-Rudolf Gottier, CEO of Micro Crystal.

“The RV-3032-C7 RTC will definitely help engineers in developing next generations of smart products,” he continued. “The availability of a programmable high frequency clock output to drive the central MCU, and access to the high-resolution thermometer, used for accurate thermal compensation and allows setting temperature threshold alarms with interrupt function, will support numerous unique and new applications,” he said.

The RV-3032-C7 is hermetically sealed in a compact reflow solderable DFN ceramic package, measuring 3.2 x 1.5 x 0.8mm. It is RoHS/lead-free-compliant and AEC-Q200 qualified.

https://www.microcrystal.com

> Read More

Harwin introduces multi-contact, high current power connector

Automotive -grade proximity sensors prevent false triggers

MEMS humidity sensor is designed for long term stability

Temperature compensated RTC has I2C interface

About Smart Cities