Nexperia has extended its portfolio of ultra-low-capacitance ESD protection diodes that safeguard high-speed data lines in interfaces such as USB, HDMI, high-speed video links and Ethernet in automotive infotainment applications. Packaging options are designed to minimize the impact on signal integrity.
The new devices include the PESD18VF1BLS-Q, PESD24VF1BLS-Q, PESD30VF1BLS-Q and PESD32VF1BLS-Q in the DFN1006BD-2 package, enabling optical inspection in automotive production lines using side wettable flanks. The PESD18VF1BBL-Q, PESD24VF1BBL-Q and PESD30VF1BBL-Q devices also are available in the DFN1006-2 package.
Nexperia said all variants are in leadless packages to improve electrical performance and minimize their impact on signal integrity. They offer ESD protection up to ±10 kV according to IEC 61000-4-2, level 4.
ESD diodes protect critical electronic systems and subsystems by dissipating the high energy of electrostatic discharges to protect components from getting damaged during an ESD event; however, adding additional components to a high-speed data line can deteriorate the signal integrity of the transferred data, Nexperia explained.
This makes it critical to select the right components that protect the system without impacting the signal transmission, particularly in high-speed automotive systems.
Nexperia’s latest AEC-Q101 automotive-qualified devices offer ultra-low capacitance, as low as a typical 0.28 pF, along with the higher standoff voltage of 18-32 V for placement closer to the connector. They also claim “extremely deep snapback behavior” and a low dynamic resistance of 0.8Ω for improved system-level robustness and clamping performance in high-speed data interfaces.
The ESD protection diodes are offered with and without side wettable flanks. Click here for more information on the ESD protection portfolio for automotive entertainment applications.
Taiwan Semiconductor has introduced its new TESD Series of single-channel electrostatic discharge (ESD) clamping diodes with size and performance specifications for wearable applications. The ESD protection devices feature proprietary bidirectional clamping cells (for ESD protection up to ±30 kV) in an ultra-small DFN0603 package.
The new protection devices are available in versions with 5 V and 3.3 V (max.) operating voltages and provide protection in compliance with IEC61000-4-2 (ESD) to ±20 kV (air/contact) and IEC61000-4-5 (lightning) to 4.5 A (8/20 µs). The series also offers a second 3.3-V model that increases these specs to ±30 kV and 8.2A, respectively.
The 3.3-V TESDL3V3B23P1Q0 (17 pF) protects control signal lines, power lines on the PCB, as well as serial and parallel ports. Both the 3.3-V TESDH3V3B03P1Q0 (0.2 pF) and 5-V TESDH5V0B03P1Q0 (0.2 pF) are suited for SATA/eSATA, PCI Express, USB3.1/3.0, USB Type-C and DisplayPort interfaces. The devices are RoHS compliant and halogen-free.
“Besides being the optimum choice for wearable applications, their ultra-small size combined with ultra-low capacitance make these protection devices beneficial in a range of other ESD-sensitive applications, including HDMI, display port and high-speed video I/O; USB 3.0 and 3.1; industrial I/O (RS485); SATA and eSATA; RAID, NAS and SAN systems,” said Sam Wang, vice president, TSC Products.
The ESD protection diodes are available now. Samples are in stock and lead time for production quantities is 12 weeks (ARO). Prices start from $0.09, depending on the device, in production quantities.
Bourns, Inc. has expanded its family of Multifuse polymer PTC (PPTC) resettable fuses, the Model MF-ASML/X Series, with a new higher power rated model. The Model MF-ASML075/6 features a maximum 0.75 A (Ihold) rating. In addition, with its ultra-compact 0402 footprint, the overcurrent/overtemperature fuses offer a new solution for space-constrained applications.
The latest PPTC resettable fuses also deliver several improvements, including increased voltage ratings (Vmax) and enhanced resistance stability. These enhancements target a variety of applications, primarily for low-voltage DC ports found in consumer products such as wearables, toys and gaming applications.
The Model MF-ASML075/6 is based on the company’s freeXpansion technology, which enables the fuses to handle higher currents and voltages. It also improves resistance stability and allows for a smaller footprint. The new devices also feature the unique titanium carbide material with a lower resistance and oxidation resistance in humid environments.
“A lower resistance is valuable because it contributes to higher power efficiency, while oxidation resistance aids in achieving an enhanced quality and reliability level,” Bourns said.
In addition, the Multifuse PPTC resettable fuses, including the new family, use electroless nickel immersion gold plating on the SMD terminals, which is reported to offer better corrosion resistance and excellent electrical conductivity, compared to traditional nickel-tin.
Available now, the Multifuse Model MF-ASML/X Series is RoHS compliant and halogen-free.
Littelfuse, Inc. has announced the release of five load switch ICs in its protection IC product line. Featuring a small form factor and high efficiency, they target IoT, mobile, handheld devices, SSD storage, building automation, consumer electronics and wearable electronics applications.
The ICs combine low-power consumption and power savings and easy-to-power on/off controls. The small chip-scale form factor not only saves space, but also integrates functions such as slew rate control, true reverse, current blocking and quick output discharging. They support the industry’s lowest quiescent current (IQ), low RON and shutdown current (ISD) to reduce parasitic leakage current, improve system efficiency and increase overall battery lifetime, Littelfuse said.
The new load switch ICs include the following series: LQ05021QCS4 (5 V, 2 A, ultra-low power consumption with slew rate control), LQ05021RCS4 (5 V, 2 A, ultra-low consumption with true reverse current blocking), LQ05022QCS4 (5 V, 2 A, ultra-low consumption with slew rate control), LQ05041QCS6 (5 V, 4 A, ultra-low power consumption with slew rate control) and LQ05041RCS6 (5 V, 4 A ultra-low power consumption with true reverse current blocking).
The load switch ICs are currently available in tape and reel in quantities of 4,000 in the following series: LQ05021QCS4, LQ05021RCS4 and LQ05022QCS4) or in quantities of 3,000 for the LQ05041QCS6 and LQ05041RCS6. Sample requests can be ordered through Littelfuse’s authorized distributors.
The devices are available in a small, chip-scale package with four bumps in a 0.77 × 0.77 × 0.46 mm package size on a 0.4-mm pitch, four bumps in a 0.97 × 0.97 × 0.55 mm die size on a 0.4-mm pitch or six bumps in a 0.97 × 1.47 × 0.55 mm package size on a 0.5-mm pitch.
Littelfuse, Inc. has launched its TTape temperature monitoring platform, which the company calls a groundbreaking overtemperature detection platform for the management of Li-ion battery systems. The overtemperature detection solution offers a unique capability to detect overtemperature at every Li-ion cell in electric vehicle (EV) battery packs.
The solution is designed to help vehicle systems manage premature cell aging while reducing the risks associated with thermal runaway incidents. The advantage of localized cell overheating detection is quicker alerts to the battery management system (BMS), compared to traditional NTC setups, Littelfuse said.
TTape can be used in a range of applications, including automotive EV/HEVs, commercial vehicles and energy storage systems (ESS). The distributed temperature monitoring capabilities improve the detection of localized cell overheating, which improves battery life and enhances the safety of battery installations.
One of the key features of TTape is its capability to monitor multiple cells with a single device, which alerts the BMS earlier in case of overtemperature. It has a response time of less than one second for quicker alerts to the potential of thermal runaway conditions. By initiating temperature management at an earlier state, TTape devices ensure that the battery pack is serviceable for an extended period, alerting the BMS sooner in overtemperature scenarios, Littelfuse said.
In addition, TTape can easily integrate with existing BMS without any calibration. Only one microcontroller (MCU) control unit is needed to integrate with the BMS systems.
“With no calibration or temperature lookup tables required, and only one MCU input needed, it integrates seamlessly with current BMS solutions alongside NTCs, delivering an enhanced detection of cell overheating,” said Tong Kiang Poo, Littelfuse’s global product manager, in a statement.
The TTape Distributed Temperature Monitoring Platform is available in tape and reel or box packaging, depending on the length required. Sample requests may be requested via authorized Littelfuse distributors worldwide. A video provides additional information about how the platform works.
Offer a full range of thin-film, surface-mountable, cartridge and ceramic axial-leaded fuses for automotive and electric vehicle (EV) applications, Littelfuse, Inc. has claimed the industry’s first release of AEC-Q200-qualified fuses. These protection devices are designed for the demanding circuit protection needs in compact automotive electronics and EV applications.
The new automotive-grade portfolio includes a range of thin-film fuses, Nano2 fuses, PICO fuses, and cartridge fuses, which are all certified to meet the AEC-Q200 Revision E qualifications for fuses for long-term reliability of components used in harsh automotive environments. Offering a wide range of performance reliability and component options, these fuses offer high I²t values to ensure high inrush current withstand capability and provide circuit protection against abnormal overload and surge conditions.
The AEC-Q200-qualified fuses are suited for a wide range of automotive electronics designs. They include on-board chargers, power distribution units, battery management systems, ignition systems, infotainment and navigation, ADAS, radar and E-Call. They also can be used for sensing line protection and high-voltage DC/DC converters.
Sample requests can be placed through authorized Littelfuse distributors worldwide.
Bourns, Inc. has expanded its next generation of gas discharge tube (GDT) series with the addition of a high voltage 2-electrode overvoltage protector family. The Model GDT28H Series is designed for use in powerline equipment for general industrial use.
The company’s next generation of GDTs feature improved impulse voltage protection and higher surge ratings to meet increased market demand as susceptibility to surges increased with smaller components, requiring smaller and more effective overvoltage protection solutions.
A key advantage of the Model GDT28H is its suitability for use in AC isolation solutions, Bourns said, enabling electrical and electronic equipment to meet electrical safety standards such as IEC 62368-1. This is thanks to a combination of features, including an extended operating voltage range, high insulation resistance and heightened surge rate.
In addition, the Model GDT28H series is housed in a compact 8 ×6-mm form factor, offering the same level of protection as a larger component, Bourns said. It also is rated for a wider operating temperature range (-40°C to 125°C), making it suited for applications in certain harsh conditions. Capacitance is rated at <1.5 pF and the DC breakdown voltage range is 1,000-3,300 V.
The 2-electrode high-voltage GDTs are available now. They are RoHS compliant and UL recognized. Click here for the datasheet.
Earlier this year, Bourns introduced the 3-electrode surface-mount GDT family. The Model GDT35 series offers “breakthrough” overvoltage surge arrestor performance.
Vishay Intertechnology, Inc. is claiming the industry’s first standard rectifier and transient voltage suppressor (TVS) two-in-one device for automotive applications. The surface-mount protection device combines a 3-A, 600-V standard rectifier with a 200-W TRANSZORB TVS in a compact FlatPAK 5 x 6 package.
The Vishay General Semiconductor R3T2FPHM3 features an oxide planar chip junction design and a common cathode circuit configuration. The two-in-one device’s rectifier features a low forward voltage drop of 0.86 V to reduce power losses and improve efficiency, while the TVS offers a breakdown voltage of 27 V.
“By combining two different technologies in a single package, the dual-chip solution saves PCB space, simplifies layouts and lowers overall costs in these applications,” Vishay said. “When paired in series with a standard TVS, the R3T2FPHM3 offers designers a complete >24-V solution with a low clamping ratio.”
The protection device is suited for high-reliability automotive applications, including secondary protection for sensor units, distributed airbag modules and low power DC/DC converters in power distribution systems. It provides a wide operating temperature range from -55°C to 175°C.
The R3T2FPHM3 is in compliance with IEC 61000-4-2, air discharge and contact mode and UL 94 V-0 flammability rating for its molding compound. The device offers an MSL moisture sensitivity level of 1, per J-STD-020, LF maximum peak of 260°C. It also is RoHS compliant and halogen-free.
Samples and production quantities of the R3T2FPHM3 are available now, with lead times of 12 weeks. The device is available in an AEC-Q101 qualified version.
Cornell Dubilier Electronics, Inc. (CDE) has launched its automotive-grade MYH series of Y2 class RFI and EMI suppression capacitors that are designed for harsh environments. These line-to-ground capacitors filter out electromagnetic noise in applications such as motors, automated meter readers, UPS, power supplies, charging systems and appliances.
The AEC-Q200-qualified suppression capacitors meet a 2,000-hour temperature, humidity and bias (THB) life test. The THB test, conducted at 85°C/85% relative humidity at rated voltage, subjected these components to twice the industry standard test hours required to meet IEC 60834, Class III-B for THB, CDE said.
They also passed AEC-Q200 automotive testing. Tests include mechanical shock and vibration, thermal cycling, solvent resistance and solderability, which qualify the capacitors for use in the most demanding industrial, automotive and consumer applications.
These film capacitors are constructed from metallized polypropylene film encapsulated with a self-extinguishing resin and plastic box that meets the UL 94V-0 requirements.
Key specs include a capacitance value range from 0.001 to 1 µF in 29 standard values, at 300 VAC, 50/60Hz. Capacitance tolerance is +/-10% (+/-20% optional). The operating temperature ranges from -40°C to 110°C. The series meets multiple international safety agency approvals, including UL, CSA and VDE for safety and performance in Y2, line-to-ground applications.
The MYH Series capacitors are available now from authorized distributors.
Bourns, Inc. has expanded its gas discharge tube (GDT) portfolio with a new family of high-energy, 2-electrode GDTs. The Model GDT212E, GDT216E, GDT220E and GDT225E Series protect AC powerlines and other applications that are subject to high current surges. These high-current GDTs meet IEC lightning protection zone classification, UL1449 Type 5 and IEC 61643-311 standards, making them suited for surge protective device (SPD) applications.
Housed in a compact, low-profile package, the GDT2xxE gas discharge tube family features a very high current rating and offers a high surge capability at 60 kA maximum rated on an 8/20 μs waveform. These features deliver the surge protection performance necessary to meet AC power line application requirements, Bourns said.
The four new model series are available in a broad range of DC breakdown voltage options (150 V to 1000 V), making them suitable for virtually any voltage configuration in low-voltage networks, Bourns said. Also available are several terminal configurations and lead shape options to meet a variety of specifications. Applications include commercial and residential IoT and industrial and renewable energy equipment.
All four series are RoHS compliant and UL recognized. They are available now.
The company also recently added a high voltage 2-electrode overvoltage protector family. The Model GDT28H Series GDTs are designed for use in powerline equipment for general industrial use.