Settling time (for level sensors)

Rated temperature

Sensing temperature

Operating temperature

PTC temperature

Response time

Reference temperature

Temperature at minimum resistance

Switching time

Surface temperature

UCT

Upper category temperature

Voltage (with subscript only for distinction from volume)

Root-mean-square value of voltage

Breakdown voltage

Insulation test voltage

Maximum link voltage

Maximum operating voltage

Maximum dynamic (short-time) operating voltage

Measuring voltage

Maximum measuring voltage

Rated voltage

Voltage drop across a PTC thermistor

α

Temperature coefficient

∆

Tolerance, change

δ

th

Dissipation factor

τ

th

Thermal cooling time constant

λ

Failure rate

Lead spacing (in mm)

Abbreviations / Notes

Surface-mount devices

* To be replaced by a number in ordering codes, type designations etc.

+ To be replaced by a letter

All dimensions are given in mm.

The commas used in numerical values denote decimal points.

Heating elements

Metallized round disks, 230 V

A53

Page 7 of 8

Please read Cautions and warnings and

Important notes at the end of this document.