High-temperature varistors

9 October 2013 Circuit & System Protection

AVX has added several new high-temperature varistors to its radial leaded TransGuard automotive series. Based on patented multilayer varistor (MLV) technology, the new components are rated for -55°C to +150°C, qualified to AEC-Q200, and feature a robust construction that enables sustained peak performance in an expanded range of harsh environment and high-temperature applications, such as under hood and down hole drilling.

Combining circuit protection and EMI/RFI attenuation functions in a single device available in two compact sizes, the new parts provide bidirectional transient voltage protection in the on-state and EMI/RFI attenuation in the off-state, effectively reducing component count and saving critical board space.

The varistors are available in four working voltages (14, 18, 26 and 48 V), four clamping voltages (60, 67, 100 and 150 V) and three energy ratings (0,1, 0,4 and 2,0 J) and are also rated for 25 kV ESD. Conformally coated with epoxy resin for enhanced durability in harsh environments, the lead-free and RoHS-compliant series is available in two sizes and with Ni underplate/100% Sn plated wire leads; nickel-free leads are available upon request.

For more information contact Yolandi de Beer, Avnet Kopp, +27 (0)11 319 8600, [email protected], www.avnet.co.za

Further reading:

Clearing the Static: Staying grounded: Ensuring effective ESD control
Actum Electronics Circuit & System Protection
To maintain reliable electrostatic discharge control, regular testing and accurate measurement are essential, with grounding products and ESD testing equipment being vital.

Read more...

---

Clearing the Static: ESD component safety in storage and transportation
Actum Electronics Circuit & System Protection
Conductive containers create a Faraday cage effect, safely channelling electrostatic charges away from the components inside.

Read more...

---

Clearing the Static: Conductive foot, heel and shoe grounders
Actum Electronics Circuit & System Protection
Conductive foot, heel and shoe grounders are used in electrostatic discharge protected areas to provide a path to ground for static electricity.

Read more...

---

LED driver for industrial power supply indication
Altron Arrow Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.

Read more...

---

Clearing the Static: Cleaning in an ESD-protected area
Actum Electronics Circuit & System Protection
Cleaning in a protected electrostatic discharge area is a critical task to maintain the integrity of sensitive electronic components and prevent damage caused by static electricity.

Read more...

---

Clearing the Static: Key principles of ESD control in electronics manufacturing
Actum Electronics Circuit & System Protection
Effectively managing electrostatic discharge is essential in electronics manufacturing to ensure not only product reliability, but also worker safety.

Read more...

---

Clearing the Static: Three steps for a dry ESD packaging system
Actum Electronics Circuit & System Protection
For optimal storage, it’s essential to complete the dry-packaging system by adding Desiccant Packs and Humidity Indicator Cards.

Read more...

---

Ensuring safety with earth leakage protection
NewElec Pretoria Circuit & System Protection
Earth leakage protection helps mitigate the risks of electric shocks, fires, and equipment damage by swiftly identifying faults and disconnecting the power supply, thus safeguarding both human lives and machinery.

Read more...

---

Suppressing EMI with filters
Vepac Electronics Circuit & System Protection
EMI/RFI filters play an important role in reducing the high-frequency noise that is generated by various electrical and electronic devices.

Read more...

---

Patch attenuates like a shielding cabinet
Würth Elektronik eiSos Circuit & System Protection
Würth Elektronik has launched its hybrid WE-EMIP EMI absorber sheet, a convenient solution for reducing electromagnetic interference by up to 40 dB.

Read more...

---