Murata Product News

Murata Adds GCM Series to Its Lineup of Multilayer Ceramic Capacitors for Automotive Applications

Murata Manufacturing Co., Ltd. has developed the GCM21BC71E106ME36 multilayer ceramic capacitor which has a maximum capacitance of 10uF with a 2012M size and 25V rating for 12V line smoothing applications in automobiles. We started mass-producing this product in February 2021

The spread of self-driving systems and electric vehicles has led to the advance of electrification in recent years. Along with this, the number of multilayer ceramic capacitors installed in one automobile has been rapidly increasing. These factors have led to a need for the downsizing of components, the expansion of capacitances and higher safety.

GCM21BC71E106ME36 Specifications

Length: 2.0±0.2mm

Width: 1.25±0.2mm

Thickness : 1.25±0.2mm

Capacitance: 10μF ±20%

Distance between external terminals g: 0.7mm min.

External terminal size e: 0.2 to 0.7mm

Operating Temperature Range: -55℃ to 125℃

Rated Voltage: 25Vdc

Size code in inch(mm): 0805 (2012M)

Capacitance change rate : ±22.0%

Temperature characteristics (complied standard): X7S(EIA)

Temperature range of temperature characteristics: -55℃ to 125℃

Murata Announces CSTNE-VH5T Series of Highly Accurate Ceramic Resonators with CAN-FD Support

Murata Manufacturing Co., Ltd. announces the release of the CSTNE-VH5T series of ceramic resonators (CERALOCK) with improved frequency accuracy and support for CAN*1-FD*2. The new products entered mass production in April 2021.

*1. CAN: Controller Area Network

*2. CAN-FD: CAN Flexible Data rate

The extensive utilization of electronic systems in automobiles has created demand for faster data transfer speeds in the networks linking the various in-vehicle functions. The CAN communication standard widely used in automobiles is being extended from the original Classic CAN, which supports transfer rates up to 500 kbps, to the newer CAN-FD, which can achieve transfer rates of 1 Mbps and above. The rollout of CAN-FD means that the timing devices used to generate the communication reference clock require higher frequency accuracy. In response, Murata has made further design refinements and efforts to reduce process variations, resulting in the new CSTNE-VH5T series with oscillation frequency accuracy sufficient for CAN-FD.

Murata ceramic resonators (CERALOCK) are widely used as timing devices in automotive applications due to their reliability, durability, and excellent balance between cost and performance. They already have a well-established track record in the market. Moving forward, Murata hopes to further expand its lineup of high-performance and highly reliable ceramic resonators (CERALOCK), thereby contributing to the advance of electronic systems for automobiles.

Product Features

1. Highly reliable, low failure rate

2. Fast oscillation startup

3. Reduced space requirements due to its internal load capacitance and greater flexibility in circuit design and board layout design

Main specifications (example: CSTNE16M0VH5T000R0)

1.Oscillation frequency deviation tolerance: −0.10% / +0.04% (equivalent to ±0.07%)

2.Oscillation frequency temperature dependency: −0.10% / +0.12% (equivalent to ±0.11%)

3.Oscillation frequency aging: −0.03% / +0.07% (equivalent to ±0.05%)

For product details, visit the Ceramic Resonator (CERALOCK) CSTNE-VH5T Series.

Ceramic Resonators (CERALOCK)  CSTNE_V Series (For Automotive)

SMD Type Ceramic Resonators

Frequency: 14.00 to 20.00MHz

Size: 3.2 x 1.3 x 1.0mm

Ceramic Resonators (CERALOCK): High-density mounting is made possible by the small package and the elimination of the need for an external load capacitor.

It has high reliability and can use it for a wide temperature range, they have found use in the automotive market for many years.

It is the best for in-vehicle ECUs for safety/body control and battery control. CAN-BUS is also supported.

Part Numbering

CSTNE 12M0 GH5L 000 R0

1      2      3     4 5

1.Series Name

2.Nominal Frequency

Frequency is expressed by four-digit alphanumeric.

(example : 8.000MHz → 8M00)

3.Product Specification

4.Individual Specification

With standard products, individual Specification is omitted.

5.Packaging

Murata releases common mode choke coil for in-vehicle SerDes PoC Interface

Murata manufacturing Co., Ltd has released the latest automotive common mode choke coils, DLW21SH391XQ2 and DLW21PH201XQ2 used to suppress noise for high-speed interfaces that use Serializer/Deserializer (Ser/Des)*1 on Power Over Coax (PoC)*2. Mass production started in May.

In recent years, various sensors (vehicle-mounted cameras, LiDAR*3, radars, etc.) are equipped to vehicles to establish self-driving car technologies. Since SerDes is often used on image data transmission interfaces, this has led to the application of PoC which performs data and power transmission on single coaxial cables in order to reduce the amount of cables. Since a large current flows through compared to conventional differential interfaces (several tens of mA currents), we have developed these products which are capable of withstanding large currents such as 300 mA and 500 mA.

Today, more detection sensors (cameras, LIDAR, radar, etc…) are being integrated into today’s self-driving automobiles. SerDes is often used in image data transmission interfaces, that has led to the application of using PoC, which combines data and power transmission over a single coaxial line to reduce the amount of cable.

Since this technology requires higher current compared to conventional differential interfaces (typically tens of mA), the latest Murata DLW21 products are designed to handle 300mA to 500mA.
Since each sensor is compact, it is difficult to increase GND*4 patterns on PCB, and noise issues may occur. By inserting these 2012 size (2.0 × 1.2 mm/0805 inch) products between the data transmission line and the GND line, you can expect noise suppression effects even with their compact size.

DLW21SH391XQ2 Specifications

Shape: SMD

Size Code (in mm): 2012

Size Code (in inch): 0805

Length: 2.0mm

Length Tolerance: ±0.2mm

Width: 1.2mm

Width Tolerance: ±0.2mm

Thickness: 1.2mm

Thickness　Tolerance: ±0.2mm

Common Mode Impedance (at 100MHz): 390Ω

Common Mode Impedance (at 100MHz) Tolerance: ±25%

Rated Current: 300mA

Derating of Rated Current: Yes (Over 105℃) *For details, please check the derating diagram.

Rated Voltage: 20Vdc

Withstanding Voltage: 50Vdc

DC Resistance(max.): 0.36Ω

DC Resistance: 0.30Ω±20%

Insulation Resistance(min.): 10MΩ

Operating Temperature Range: -40℃ to 125℃

Mass(typ.): 0.011g

Number of Circuit: 1

Operating Temperature Range(Self-temperature rise is included): No

DLW21SH391XQ2 Features

1. Small size: 2.0x1.2x1.2mm

2. High rated current available (300ｍA)

3. Available for high density mounting (Narrow pitch)

DLW21SH391XQ2 Application

Measures against common mode noise in high-speed

differential transmission lines (SerDes series [FPD-Link Ⅲ] etc.)

such as in-vehicle cameras.

LW21PH201XQ2 Specifications

Shape: SMD

Size Code (in mm): 2012

Size Code (in inch): 0805

Length: 2.0mm

Length: Tolerance ±0.2mm

Width: 1.2mm

Width Tolerance: ±0.2mm

Thickness : 1.2mm

Thickness　Tolerance: ±0.2mm

Common Mode Impedance (at 100MHz): 200Ω

Common Mode Impedance (at 100MHz) Tolerance: ±25%

Rated Current: 500mA

Derating of Rated Current: Yes (Over 105℃)

*For details, please check the derating diagram.

Rated Voltage: 20Vdc

Withstanding Voltage: 50Vdc

DC Resistance(max.): 0.168Ω

DC Resistance 0.14Ω±20%

Insulation Resistance(min.): 10MΩ

Operating Temperature Range: -40℃ to 125℃

Mass(typ.): 0.011g

Number of Circuit: 1

Operating Temperature Range(Self-temperature rise is included) : No

LW21PH201XQ2 Features

1. Small size: 2.0x1.2x1.2mm

2. High rated current available (500ｍA)

3. Available for high density mounting (Narrow pitch)

LW21PH201XQ2  Application

Measures against common mode noise in high-speed differential transmission

lines (SerDes series [FPD-Link Ⅲ] etc.) such as in-vehicle cameras.