BS EN 60738-1-4:2008
Thermistors. Directly heated positive step-function temperature coefficient. Blank detail specification. Sensing application. Assessment level EZ

Standard No.

BS EN 60738-1-4:2008

Release Date

2008

Published By

British Standards Institution (BSI)

Latest

BS EN 60738-1-4:2008

Replace

07/30161488 DC-2007 BS EN 60738-1-4:1999

Scope

1.1 Method(s) of mounting (to be inserted) (See IEC 60738-1:2006, 7.30). 1.2 Dimensions (All dimensions are in millimetres or inches and millimetres; it shall be stated which dimensions are suitable for gauging). Dimensioned drawing(s) shall be given in the detail specification. If necessary, the dimensions may be listed in tabular form with reference to styles or codes. 1.3 Coating The detail specification shall state: a) whether the thermistor is insulated or non-insulated; b) the material; c) the colour, if applicable. 1.4 Terminations The detail specification shall state whether the terminations are suitable for soldering. If they are not, suitable methods of connection shall be stated for example: welding, clamping or crimping. 1.5 Flammability The detail specification shall state whether the thermistor is actively or passively flammable if applicable. The test method shall be given in the test schedule. 1.6 Resistance to solvents The detail specification shall state whether the coating and the marking of the thermistor are solvent resistant if applicable. The test methods shall be given in the test schedule. 1.7 Packaging The detail specification shall give the following information (if required): a) whether bulk packed or taped and if taped, drawing or references; b) the dimensions of the immediate packaging and the number of thermistors packed; c) the dimensions of the outer package and the number of immediate packages; d) methods of disposal of the packaging material. 1.8 Electrical data/Ratings and characteristics The detail specification shall give units and tolerances or limiting values for the following parameters. If necessary, electrical data may be listed in tabular form, with reference to styles and codes. Upper/Lower category temperatures (UCT/LCT); Operating temperature range at maximum voltage; Maximum voltage (Umax.); Zero-power resistance (RT); Resistance RNF at TNF (if applicable, see IEC 60738-1:2006, Figure 2); Isolation voltage (insulated thermistors only); Insulation resistance (insulated thermistors only); Response time.

BS EN 60738-1-4:2008 history

• 2008 BS EN 60738-1-4:2008 Thermistors. Directly heated positive step-function temperature coefficient. Blank detail specification. Sensing application. Assessment level EZ