Circuit & System Protection


Thyristor surge protection devices

6 February 2008 Circuit & System Protection

ON Semiconductor has expanded its lineup of circuit protection solutions with the introduction of the new NPxxx series of Thyristor Surge Protection Devices (TSPD) for telecommunications applications.

The series, consisting of 44 devices, protects telecommunication circuits found in central office, access and customer-premises equipment from over-voltage conditions. Ideal applications include modems, residential gateways, digital subscriber line access multiplexer (DSLAM) and integrated voice data (IVD) cards.

Used as part of the secondary protection circuit, these devices provide over-voltage protection by diverting energy away from the circuit being protected. They are UL497A certified, and implementation into electronics applications assists in meeting various regulatory requirements including GR-1089-CORE, ITU K.20/K.21/K.45, IEC 61000-4-5, IEC 60950, YD/T 993, YD/T 950, YD/T 1082.

The 44 new devices are high surge current TSPDs offered in a range of protection voltages from 64 V to 350 V, and are available at surge current ratings of 50 A, 80 A and 100 A. The devices limit voltage and divert surge current to ground. Being bidirectional, they offer the functionality of two devices in a single package, saving valuable PCB space.

Once a transient overvoltage has passed, these devices return to their normal 'off' or transparent state, and appear invisible to the normal operation of the circuit. With no wearout characteristics, these TSPDs feature stable performance characteristics under fast transient conditions.

The devices are offered in a 5,40 mm x 3,5 mm DO-214AA surface mount package and a 7,60 mm x 3,60 mm DO-15 axial lead package.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Ryzen-based computer on module
Altron Arrow AI & ML
SolidRun announced the launch of its new Ryzen V3000 CX7 Com module, configurable with the eight-core/16-thread Ryzen Embedded V3C48 processor.

Read more...
Robust and customisable SBC
Altron Arrow DSP, Micros & Memory
Pairing the powerful i.MX8M Plus System on Module (SoM) from SolidRun, which features the i.MX 8M Plus SoC from NXP, this high-performance SBC is set to transform industrial environments.

Read more...
New family supports future cryptography
Altron Arrow DSP, Micros & Memory
NXP has introduced its new i.MX 94 family, which contains an i.MX MPU with an integrated time-sensitive networking (TSN) switch, enabling configurable, secure communications with rich protocol support in industrial and automotive environments.

Read more...
NXP’s all-purpose microcontroller series
Altron Arrow DSP, Micros & Memory
NXP has released its MCX A14x and A15x series of all-purpose microcontrollers which are part of the larger MCX portfolio that shares a common Arm Cortex-M33 core platform.

Read more...
Powering the intelligent edge
EBV Electrolink AI & ML
STMicroelectronics released new devices from the second generation of its industrial MPUs, the STM32MP2 series, to drive future progress in smart factories, smart healthcare, smart buildings, and smart infrastructure.

Read more...
Non-terrestrial network module
Altron Arrow Telecoms, Datacoms, Wireless, IoT
Fibocom unveiled its MA510-GL (NTN), a non-terrestrial networks module which is compliant with 3GPP Release 17 standard.

Read more...
QLC Flash memory using BiCS tech
EBV Electrolink DSP, Micros & Memory
KIOXIA announced it had started shipping its 2 Tb Quad-Level-Cell memory devices with its 8th-generation BiCS FLASH 3D flash memory technology.

Read more...
Cellular IoT connectivity via satellite
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The Telit Cinterion cellular LPWA module will enable satellite data communication using the NB-IoT protocol, without any special hardware changes required for the integration of the cellular module in the customer application.

Read more...
Integrated POL voltage regulators
EBV Electrolink Power Electronics / Power Management
Infineon’s TDA38807 and TDA38806 are their highest density high-efficiency integrated point-of-load (IPOL) solutions for smart enterprise systems.

Read more...
Low noise 3-axis MEMS accelerometers
Altron Arrow DSP, Micros & Memory
The ADXL357 and ADXL357B from Analog Devices are digital outputs, low noise density, low 0 g offset drift, low power, three-axis accelerometers with selectable measurement ranges.

Read more...