Base materials for printed circuits. Part 3: Special materials used in connection with printed circu...
Covers the bonding sheet material used in the fabrication of multilayer printed boards. The test methods for bonding sheet material are also dealt with.
Printed boards. Part 7: Specification for single and double sided flexible printed boards without th...
Applies to single and double sided printed boards without through connections irrespective of their method of manufacture. Is intended as a basis on which agreements between purchaser and vendor can be made. Defines the characteristics and establishes uniform requirements for judging properties and dimensions.
Printed boards. Part 8: Specification for single and double sided flexible printed boards with throu...
Applies to single and double sided printed boards with through connections irrespective of their method of manufacture. Is intended as a basis on which agreements between purchaser and vendor can be made. Defines the characteristics to be assessed, the test methods to be used and establishes uniform requirements for judging properties and dimensions.
1. Scope
1.1 This Standard applies to add-on heat pumps for comfort heating or heating
and cooling not exceeding 20 kW in the cooling mode and rated at 600 V or less,
single or polyphase, intended to utilize the fan assemblies and duct work of
the existing installed furnaces to form the complete functional systems where
the existing parts are not covered by this Standard.
Note: For…
Road vehicles — Air braking systems — Identification of connections on units
Specifies an identification system for pipe connections on units of air braking systems. The digits designated shall be placed close to the ports on the units. Applies to motor vehicles and their trailers and may also be used for schematic diagrams of braking systems. Shows an detailed example.
