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What antenna can I use with Murata MM8430 RF connectors?

brianchilders — Wed, 27 Nov 2019 23:21:10 GMT

What antennas may I use with Murata MM8430 RF connectors?

Thank you for any pointers / links to download.

-brian

RE: What antenna can I use with Murata MM8430 RF connectors?

AyaT — Wed, 11 Dec 2019 10:47:08 GMT

Dear Brian,

Thank you for your enquiry.

We have suitable manual probes that can be connected to the MM8430 RF connector on one end and SMA connector on the other end. The manual probe part number is MXHS83QE3000 and is available from: https://www.avnet.com/shop/emea/products/murata/mxhs83qe3000-3074457345629443144/

You will then be able to connect for example a SMA antenna directly to MXHS83QE3000 on the other side.

If you have further question, please let us know.

Many thanks

Kind regards,

Aya

RE: What antenna can I use with Murata MM8430 RF connectors?

Gough Lui — Thu, 28 Nov 2019 01:35:43 GMT

From what I can tell on the datasheet, the MM8430 belongs to the SWD family:

(From Murata Datasheet: https://www.murata.com/~/media/webrenewal/support/library/catalog/products/switch/switch/o33e.ashx?la=en-us )

I cannot find any direct references within their literature, but I believe it to be compatible with the Hirose U.FL, equivalent to I-PEX MHF series, IPAX, IPX, AMC and UMCC as per the Wikipedia entry. This is based on the diameter of the largest portion of the outer flange being 2.1mm, where nominally the U.FL is 2.0mm.

If you compare with UMCC (datasheet from TE Connectivity: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=1307191_UMCC_Connectors&DocType=Catalog… ) for example:

Notice the similarity in diameter (2.1mm) and height (0.8mm) of the outer shell.

Likewise, compare with MHF (datasheet from IPEX for MHF-SW23:https://www.i-pex.com/Products/detail/48) shows similar dimensions:

This time, the outer diameter is smaller at 1.92mm (sometimes it's 2.0mm depending on manufacturer) and the height is smaller at 0.6mm because of the lower profile of the part.

As a result, I suspect the SWD series is designed to interoperate with Hirose U.FL, etc. But for perfect assurance, I would suggest you contact Murata directly and obtain their recommendation as to the best mating connector especially if used in a critical application.

As for antennas that can be used - this will depend on what you can find with the connector attached, but the connector is specified to operate from DC to 6GHz, so I'd say "plenty" especially if you build it yourself or use adapter cables to other RF connector types.

- Gough

How to get started with the Murata Type YD-Certified Wi-Fi Module?Has anyone used it before?

Former Member — Sat, 26 Mar 2016 13:33:59 GMT

My module was just shipped and would be with me in a few days? Since it's new,I am not able to find many resources on it. I'll create a few once I have it in hand.

Here is the link to the product:

Mouser Electronics

Can anyone guide me to get started with it? Should I begin with arduino over serial or use a Tiva C launchpad I own?

Does anyone have experience with Murata Wifi Modules?

I need help as I have just moved on from ready to use shields and kits to industrial modules and a little confused with the development environment outside Arduino IDE and all these different connectors to be used with each different product.

Your help would be greatly appreciated.

eagle file powerbox

Former Member — Wed, 06 May 2015 14:32:15 GMT

Does there is a eagle library for powerbox PMB03-24S05H?

If there's not I would like to know which part I rather take in eagle and change its footprint?

RE: Murata Power Solutions sets a new standard for 1 Watt isolated DC-DC converters

Former Member — Fri, 01 Apr 2011 13:28:39 GMT

Model	Vin (range)	Vout	Iout	Load Reg.		Ripple & Noise		Efficiency		Isolation Capacitance
Model	Vin (range)	Vout	Iout	typ	max	typ	max	min	typ	Isolation Capacitance
MTU1S0505MCMTU1S0505MC	5V (4.5 - 5.5V)	5V	200mA	7.3%	9%	35mVp-p	75mVp-p	80%	83%	13pF
MTU1S0509MCMTU1S0509MC	5V (4.5 - 5.5V)	9V	111mA	6.1%	7.5%	10mVp-p	25mVp-p	83%	86%	16pF
MTU1S0512MCMTU1S0512MC	5V (4.5 - 5.5V)	12V	83mA	5.6%	7.5%	15mVp-p	30mVp-p	84%	87%	18pF
MTU1S0515MCMTU1S0515MC	5V (4.5 - 5.5V)	15V	66mA	5.3%	6.5%	10mVp-p	25mVp-p	84%	87%	20pF
MTU1S1205MCMTU1S1205MC	12V (10.8 - 13.2V)	5V	200mA	5.8%	8%	20mVp-p	40mVp-p	80%	84%	20pF
MTU1S1209MCMTU1S1209MC	12V (10.8 - 13.2V)	9V	111mA	3.9%	6%	10mVp-p	25mVp-p	82%	87%	28pF
MTU1S1212MCMTU1S1212MC	12V (10.8 - 13.2V)	12V	83mA	3.5%	6%	10mVp-p	25mVp-p	83%	88%	32pF
MTU1S1215MCMTU1S1215MC	12V (10.8 - 13.2V)	15V	66mA	3.2%	5%	10mVp-p	25mVp-p	84%	88%	37pF

Murata Power Solutions sets a new standard for 1 Watt isolated DC-DC converters

Former Member — Thu, 28 Oct 2010 13:22:37 GMT

[View:https://www.youtube.com/watch?v=w8S8zrPU8yc:425:350]

Murata Power Solutions is set to change the shape of 1 Watt isolated surface-mount DC/DC converters. The introduction of our new high performance MTU1 series marks a step-change in the miniaturization of power modules, setting new standards for footprint, load regulation and efficiency.

The MTU1 series' dimensions are 8.2 x 8.4 x 8.5 mm, representing a footprint reduction of 50% compared to the previous generation.
Load regulation from 3.2%, a 40% reduction.
Power density 1.71 W/cm3.
56% less power dissipation and lower running temperatures than its predecessor.

"The Cube" reduces footprint by 50% over current designs

RE: Murata Power Solutions Demo ACM20 Series : Multi Function AC Power Meter

Former Member — Fri, 01 Apr 2011 13:15:40 GMT

AC power meters display the most critical measurements in mains-powered equipment: voltage, amperage, active power (watts), and power factor. A front panel selector-switch provides two modes of operation: a fixed reading of any of the four parameters, or a continuous cycling through all four measurements. An optional model displays line frequency with 0.1Hz resolution. All ACM20 multi-function power meters include built-in current transformers - no other user-supplied components are required.

Download ACM20 Datasheet
Request ACM20 Sample
Request ACM20 Quote

ACM20-2-AC1-R-C - AC POWER METER, 85VAC to 264VACACM20-2-AC1-R-C - AC POWER METER, 85VAC to 264VAC
ACM20-2-AC1-R-F-C - AC POWER METER, 85VAC to 264VACACM20-2-AC1-R-F-C - AC POWER METER, 85VAC to 264VAC
ACM20-4-AC1-R-C - Power MeterACM20-4-AC1-R-C - Power Meter
ACM20-4-AC1-R-F-C - Power MeterACM20-4-AC1-R-F-C - Power Meter
ACM20-5-AC1-R-C - Power MeterACM20-5-AC1-R-C - Power Meter
ACM20-5-AC1-R-F-C - Power MeterACM20-5-AC1-R-F-C - Power Meter

Murata Power Solutions Demo ACM20 Series : Multi Function AC Power Meter

Former Member — Mon, 08 Nov 2010 18:47:28 GMT

[View:https://www.youtube.com/watch?v=N_jkBAQL3GY:425:350]

Murata Power Solutions | Low EMI converter transformers

Former Member — Fri, 01 Apr 2011 13:07:23 GMT

[View:https://www.youtube.com/watch?v=1oCaTjHjkZ8:425:350]
Murata Power Solutions 782482 series of converter transformers are specifically designed for use with Analog Devices chipsets to provide isolated RS-485 and RS-422 interfaces. Carefully controlled turns ratios ensure consistent performance whilst a toroidal construction minimises EMI.

782482 Converter Transformers Data Sheet

Order from Newark : 782482/33VCOrder from Newark : 782482/33VC

Order from Newark : 782482/53VCOrder from Newark : 782482/53VC

Murata Power Solutions | Selecting Isolated Brick DC/DC

Former Member — Tue, 28 Dec 2010 20:35:30 GMT

[View:https://www.youtube.com/watch?v=4skqgZGVIkU:425:350]

Selecting the best isolated brick DC/DC converter for an application can pose a challenging task for the design engineer. There are a number of circumstances that can motivate a particular choice. These could be transient response, efficiency, environmental conditions, or mechanical packaging. This presentation is based on a technical article by Murata Power Solutions Field Applications Engineer, Paul Knauber, and looks at some of the technical considerations when choosing the optimum brick converter for an application.

Are X7R MLCC's okay to be used in high dv/dt circuits?

enrico.migchels — Fri, 29 Jan 2010 22:14:19 GMT

When X7R SMD capacitors are used within a over current protection circuit of a half bridge converter (supply voltage 400Vdc) a strange phenomenen occurs that the X7R caps show a high non linear behaviour. The over current protection circuit becomes highly sensitve for load steps. The OCP trips as the capacitors seem to have a higher value at first large dv/dt step. Sometimes the effect is less or even absent. When NP0 (or COG) capacitors are used this behaviour is completly absent. It would be interesting to know why the X7R capacitors are so sensitive for high voltage/high dv/dt signals.

RE: Are X7R MLCC's okay to be used in high dv/dt circuits?

enrico.migchels — Wed, 06 Oct 2010 18:20:54 GMT

Hi Jonathan,

Thanks a lot for this useful information. The design which failed with the X7R capacitors is not showing any strange behaviour when fitted with NP0. The quality is consistent for the last year's production. This shows again the importance of carefully selection of components (in the development process as well as in the production process).

Best regards, Enrico Migchels

RE: Are X7R MLCC's okay to be used in high dv/dt circuits?

Former Member — Wed, 06 Oct 2010 12:31:37 GMT

This is due to electrostrictive effect of dielectric materials. When an AC voltage is applied, the capacitor effectively stretches and shrinks in the different dimensions. Mechanical distortion and stress concentrate around the edge of the external electrode of the capacitor. If the AC voltage is large, and the material has sufficient dielectric properties, after some time cracks can form under the external electrode which can lead to short circuit of the component.

There are ways to mitigate this effect as outlined below:

First factor to take into account is the thickness of the dielectric material between the inner electrodes of the capacitor. This has a direct effect on the magniture of the electrostrictive phenomenon. When constructing high voltage capacitors, it's therefore essential to ensure the dielectric layer is thick enough to reduce the chip capacitor's internal mechanical stress.

Secondly, the structure of the inner electrodes can contribute to the electrostrictive effect.

Additionally, thickness of the outer layer of the dielectric (the dummy layer) can influence the formation of cracks.

Last but not least, properties of the dielectric material itself can play a part. Murata carefully consider tjhe properties of its materials to ensure that product specified for high voltage capacitor are constructed from suitable dielectric materials.