Circuit & System Protection


Protectors for modem applications

25 October 2000 Circuit & System Protection

The 275 V working and 350 V protection voltage of the TISP4350L3BJ meets class B ringer levels and enables protection of the modem ring hook-switch relay while the TISP4070L3BJ provides maximum protection for the modem electronics with its 58 V working and 70 V protection voltage. For higher current applications, H3 versions of both devices are available, offering 200 A ratings in the same package.

The device package and chip design have been optimised to handle the FCC surges and to maintain current conduction for the full test duration of the AC power cross currents, which range from 2,2 to 40 A. The resulting low capacitance design presents less than 20 pF under bias conditions, ensuring negligible line loading. In addition, the combination of fast operation with the voltage accuracy of the manufacturer's ion implantation process reduces voltage overshoot under surge conditions, minimising circuit stress.

This flexible range of devices may be used singly for metallic protection between ring and tip or in pairs for longitudinal protection to ground, with the proven SMB surface mount package saving valuable board space for either application.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Thingstream extends LoRaWAN support
29 January 2020, Altron Arrow , Telecoms, Datacoms, Wireless, IoT
It is now possible to add LoRaWAN gateways and LoRaWAN devices to Thingstream, giving developers quick, easy on-boarding, and the full power of Thingstream’s MQTT broker, and Data Flow Manager. This new ...

Read more...
GaN is breaking barriers for RF power amplifiers
29 January 2020, Altron Arrow , Telecoms, Datacoms, Wireless, IoT
The increasing demand for higher data rates in telecommunications and higher resolution in industrial systems is pushing the frequency of operation higher for the electronics that support them. Many of ...

Read more...
PCIe 2.0 packet switches
29 January 2020, Altron Arrow , Telecoms, Datacoms, Wireless, IoT
Diodes Incorporated announced the PI7C9X2G304EVQ and PI7C9X2G404EVQ PCIe 2.0 packet switches, offering 3-ports/4-lanes and 4-ports/4-lanes, respectively. The packet switches are automotive-compliant for ...

Read more...
Unity gain operational amplifier
29 January 2020, Altron Arrow , Analogue, Mixed Signal, LSI
The ADHV4702-1 is a high-voltage (220 V), unity-gain, stable precision operational amplifier. The next generation of proprietary semiconductor processes and innovative architecture from Analog Devices ...

Read more...
The importance of surge protection in the lightning protection arena
29 January 2020, DEHN Africa , Circuit & System Protection
In order to understand the need for surge protection, it is important to understand how lightning causes damage. The sources of lightning damage are quite different, and we use different types of mitigation ...

Read more...
TVS array for medical electronics
29 January 2020, Altron Arrow , Circuit & System Protection
ProTek Devices has introduced a new bidirectional, asymmetrical TVS(transient voltage suppressor) array component for circuit protection in medical electronic devices, smartphones, audio/video inputs, ...

Read more...
High-power TVS components
29 January 2020, Altron Arrow , Circuit & System Protection
ProTek Devices has introduced a family of high-powered transient voltage suppressor components for circuit protection in DC, AC and remote transmission line applications. The family of TVS components ...

Read more...
4-switch buck-boost controller
29 January 2020, Altron Arrow , Power Electronics / Power Management
A common DC-DC converter problem is generating a regulated voltage when the input voltage can be above, below, or equal to the output - that is, the converter must perform both step-up and step-down functions. ...

Read more...
USB Type-C port-protection IC
29 January 2020, Altron Arrow , Circuit & System Protection
Designers can easily migrate small electronic devices from legacy USB Micro-A or Micro-B interconnects to the latest Type-C style with the STMicroelectronics TCPP01-M12 port protector, which satisfies ...

Read more...
Transient voltage supressor diodes for automotive
29 January 2020, Electrocomp , Circuit & System Protection
Bourns announced the release of the Model 15KPA-SD-Q transient voltage suppressor diode series. This series was designed for use in DC bus clamping applications and for the protection of sensitive electronic ...

Read more...