Components

Fake DS18B20

Fake DS18B20 found

Bought a small lot of DS18B20 from a small Chinese Online Shop…

None of them working. Behavior like a shorted component.

Testing them with a small component analyzer (ESR meter, large screen version) resulted as NPN transistors. Beware.

COTS Test: Wireless Charger

This gallery contains 8 photos.

COTS Test series – Wireless Power – part 1

Testing this pair of  Wireless Power Transmitter + Receiver I noticed that the output current measured was 10% of the stated value. I start to peel off the receiver and try to measure what that coil (not litzwire) receives.

Transmitter Coil: 3uH

Receiver Coil: 3uH without shield

 

Some Photos:

 

Waveform and measurements:

WE SKEDD Line

The SKEDD line of PCB connectors by WE

One alternative solution for a press-fit PCB connector is the WE Patented SKEDD contact. A great solution seems to be the 3 row shrouded locking connector concept announced by WE.

WE SKEDD’s wire to board, SKW connector designed for white goods can sustain a 400v/20A power transfer to a 1.6mm PCB. Mating cycles 5.

Datasheet here.

Flyer: http://www.we-online.com/web/en/index.php/show/media/05_intelligente_systeme/skedd/2014__neu/SKEDD_Broschuere_01-2014_EN_Screen.pdf

The Component to board series can simply eliminate the need for a socket. Some uses: relays, fuses and leds.

SKEDD relay

 

ATECC108 from ATMEL

ATECC108 is a ECDSA Crypto Authentication Chip that is using key sizes of 256 or 283 bits and supports I²C communication (< 1Mb/sec) and Single-Wire Interface.

Features:

  • NIST B283/K283/P256 bit ECC (ECDSA) Engine (~60ms Sign Protocol)
  • ECC Key Generation, Signature Computation, and Signature Verification
  • 256 bit SHA Hardware Engine
  • Multi-level Hardware FIPS Random Number Generator
  • Complete Client and Host Functionality in Same Device
  • 72 bit Unique ID/Serial Number
  • I²C, Single-Wire Interface
  • 2.0V – 5.5V Operation, 150nA Standby Current
  • 8-lead UDFN (2mm x 3mm), 8-lead SOIC, 3-lead Contact, WLCSP (Future)

Datasheet & Documents:

http://www.atmel.com/devices/ATECC108.aspx?tab=documents

Similar devices:

Maxim’s DS28E35

Faulty Condenser Mic

Opened Condenser Mic

Opened Condenser Mic – Faulty K596 N-Channel FET

FET:

  • Power dissipation PCM: 0.1W
  • Gate Current G: 10mA
  • Drain current : 1mA
  • Drain-Source voltage VGDO: -20 V

 

TLV1117: Low cost LDO’s just got lower

TI news:

The TLV1117 is a positive low-dropout voltage regulator designed to provide up to 800 mA of output current.

The device is available in 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V, and adjustable-output voltage options.

All internal circuitry is designed to operate down to 1-V input-to-output differential. Dropout voltage is specified at a maximum of 1.3 V at 800 mA, decreasing at lower load currents.

http://www.ti.com/product/tlv1117?sp_rid_pod4=OTQ4MTM1NzE3OAS2&sp_mid_pod4=39219235

RSS EETimes Semiconductor News
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    Deal focused on Z-Wave technology; Silicon Labs intends to divest or shutter other product lines.
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    Thus far, Trillium has been the sole voice promoting 30-year-old CAN bus protection. Now Karamba Security is in the game, claiming it better because SafeCAN authenticates a CAN bus-based network with "zero network overhead."
  • IoT Markets to Watch in 2018 December 13, 2017
    Predictive maintenance and asset tracking are two big IoT markets to watch in 2018 because they will provide real efficiencies and improved safety.
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