Elektrotechnické inženýrství

Komise : IEC/SC 62A (Common aspects of electrical equipment used in medical practice)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 16.07.2019
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Amendment

Komise : IEC/SC 62A (Common aspects of electrical equipment used in medical practice)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 16.07.2019
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Amendment

Komise : IEC/SC 62A (Common aspects of electrical equipment used in medical practice)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 16.07.2019
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1.3 *  Collateral standards

Replace the existing second paragraph with:

Applicable collateral standards shall apply together with this standard.

Delete the existing third paragraph.

1.4 *  Particular standards

Replace the existing first paragraph with:

In the IEC 60601 series, particular standards define basic safety and essential performance requirements, and may modify, replace or delete requirements contained in this standard and applicable collateral standards as appropriate for the particular me equipment under consideration.

Replace the existing second paragraph with:

A requirement of a particular standard takes priority over this standard and applicable collateral standards.

Oblast zaměření: Polovodiče
Komise : IEC/TC 47 (Semiconductor devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 16.07.2019
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This part of IEC 60749 provides a means of assessing the resistance to soldering heat of semiconductors packaged as plastic encapsulated surface mount devices (SMDs). This test is destructive.

Oblast zaměření: Polovodiče
Komise : IEC/TC 47 (Semiconductor devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 16.07.2019
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This part of IEC 60749 establishes a standard procedure for determining the preconditioning of non-hermetic surface mount devices (SMDs) prior to reliability testing.

The test method defines the preconditioning flow for non-hermetic solid-state SMDs representative of a typical industry multiple solder reflow operation.

These SMDs are subjected to the appropriate preconditioning sequence described in this standard prior to being submitted to specific in-house reliability testing (qualification and/or reliability monitoring) in order to evaluate long term reliability (impacted by soldering stress).

NOTE 1 Correlation of moisture-induced stress sensitivity conditions (or moisture sensitivity levels (MSL)) in accordance with IEC 60749-20 and this specification and actual reflow conditions used are dependent upon identical temperature measurement by both the semiconductor manufacturer and the board assembler. Therefore, it is recommended that the temperature at the top of the package on the hottest moisture sensitive SMD during assembly be monitored to ensure that it does not exceed the temperature at which the components are evaluated.

NOTE 2  For the purpose of this standard, SMD is restricted to include only plastic-encapsulated SMDs and other packages made with moisture-permeable materials.

Oblast zaměření: Vláknová optika
Komise : IEC/SC 86C (Fibre optic systems and active devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 23.07.2019
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This document defines detail specifications for fibre optic sensors using one or more fibre Bragg gratings (FBG) as the sensitive element for strain measurements. Generic specifications for fibre optic sensors are defined in IEC 61757.

This document specifies the most important features and characteristics of a fibre optic sensor for strain measurements, based on use of an FBG as the sensitive element, and defines the procedures for their determination. Furthermore, it specifies basic performance parameters and characteristics of the corresponding measuring instrument to read out the optical signal from the FBG. This document refers to the measurement of static and dynamic strain values in a range of frequencies.

A blank detail specification is provided in Annex B.

Oblast zaměření: Polovodiče
Komise : IEC/SC 47E (Discrete semiconductor devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 23.07.2019
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This part of IEC 60747 specifies the terminology, essential ratings, characteristics, safety tests as well as the measuring methods for optocouplers).

NOTE The term "photooptocoupler" can also be used instead of "optocoupler".

Oblast zaměření: Vláknová optika
Komise : IEC/SC 86C (Fibre optic systems and active devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 30.07.2019
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This part of IEC 62148 covers the physical interface specification of optical transceivers for asynchronous-transfer-mode passive optical network (ATM-PON) systems recommended by the International Telecommunication Union (ITU) as ITU Recommendation G.983.1.

Oblast zaměření: Polovodiče
Komise : IEC/TC 110 (Electronic display devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 6.08.2019
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This document specifies the standard measurement conditions and measuring methods for determining the optical performance of a projection screen in terms of its photometric characteristics, including screen gain and speckle contrast, from different viewing directions. These methods are only applied for the case in which the projection screen and a laser projector are integrated and used with fixed configuration as a set to create a real image. Both front and rear projection screens are included. This International Standard excludes projection screens which are classified as optically see-through screens, including head-up displays.

Komise : IEC/TC 100 (Audio, video and multimedia systems and equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 6.08.2019
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This part of IEC 63181 specifies measuring methods for LCD multi-screen display terminals. To evaluate the characteristics of LCD multi-screen display terminals, the following measurement items are specified:

Gap (physical, optical) -- Detailed splicing precision;

Splicing deviation – Splicing accuracy of active areas of LCD splicing screen;

Installation deviation -- The flatness of terminal surfaces in vertical and horizontal directions;

Luminance uniformity – Luminance uniformity of adjacent LCD units;

Chromatic uniformity – Chromatic uniformity of adjacent LCD units.

Oblast zaměření: Vláknová optika
Komise : IEC/SC 86B (Fibre optic interconnecting devices and passive components)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 6.08.2019
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This part of IEC 61753 contains the minimum test and measurement requirements and severities which a fibre optic isolator as specified by IEC 61202-1 should satisfy in order to be categorized as meeting the requirements of isolators used in controlled environments as specified in IEC 61753-1. The requirements cover single-mode pigtailed style polarization independent isolators for category C used in controlled environments.

Oblast zaměření: Elektromechanické součástky
Komise : IEC/SC 48D (Mechanical structures for electronic equipment)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 6.08.2019
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This part of IEC 62610 which deals with thermal management for cabinets in accordance with IEC 60297 and IEC 60917 series, provides for compatible measurement methods of recirculation ratio and bypass ratio which are indicators for defining quality of airflow in the forced air cooling that can be commonly applied to indoor cabinets for mounting subrack and/or chassis-based equipment.

NOTE 1 Both recirculation and bypass represent leakage airflows, i.e. detrimental phenomena in terms of cooling efficiency; their measurement is obviously aimed at their mitigation.

This document contains the following:

the definition of recirculation and bypass flow rates in the cooling of the cabinet,

the levels of the recirculation ratio RC,

the definition of the formula for the recirculation ratio RCs of forced air cooling subrack and/or chassis-based equipment installed in the cabinet,

the definition formula of recirculation ratio RCr and bypass rate BPr of the entire cabinet,

the requirements of the measuring method of each temperature necessary for calculating the recirculation ratio RCs, RCr and bypass ratio BPr.

NOTE 2 This document includes the definition of measuring bypass ratio, but excludes the definition of levels of bypass ratio.

The drawings used are not intended to indicate product design. They are only for explanatory indications for defining forced air cooling airflows.

The recirculation and bypass measurement methods dealt with in this document are assumed to be applied to a cabinet installed indoors. The cooling air inlet is at the front or the bottom of the cabinet and the heated air is exhausted to the rear or the top. These methods are also applicable to a cabinet that is installed outdoors and has a cooling device such as a heat exchanger or an air conditioner on the front or the back (see Annex C).

The recirculation ratio of a subrack or a cabinet is defined for each individual subrack or chassis-based equipment mounted in the cabinet or for the entire cabinet. The bypass ratio of a cabinet is defined for the entire cabinet.

Oblast zaměření: Polovodiče
Komise : IEC/TC 47 (Semiconductor devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 6.08.2019
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This standard provides the measurement procedure for a fast BTI (bias temperature instability) test of metal-oxide semiconductor field-effect transistors (MOSFETs), and provides the two procedure one is the degradation at EOL (End of Life) in use condition, which are used mainly reliability design, and the other is lifetime of the targeted criteria, which are necessary for qualification of each semiconductor device application.

Oblast zaměření: Vláknová optika
Komise : IEC/SC 86B (Fibre optic interconnecting devices and passive components)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 13.08.2019
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Amendment

Oblast zaměření: Vláknová optika
Komise : IEC/SC 86C (Fibre optic systems and active devices)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 13.08.2019
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This document specifies the performance standards for a multiple channel transmitter/receiver chip scale package with multimode fibre interface that operates at up to 28Gbit/s per channel.  It specifies the parameters that apply, with clearly defined conditions, severities, and pass/fail criteria. The tests are intended to be run as an initial design verification to prove any product’s ability to satisfy the performance standard’s requirements.

A product that has been shown to meet all the requirements of a performance standard can be declared as complying with the performance standard, but should then be controlled by a quality assurance/quality conformance program.

Oblast zaměření: Elektromechanické součástky
Komise : IEC/TC 91 (Electronics assembly technology)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 20.08.2019
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This part of IEC 61189-5 is a test method designed to determine the proportion of soluble ionic residues present upon a circuit board, electronic component or assembly that are within acceptable limits to avoid their deleterious effects upon the intended electrical performance. The conductivity of the solution used to dissolve the ionic residues is measured to evaluate the level of ionic residues