PTCTT Datasheet, PDF (4/5 Pages) Vishay Siliconix – TWIN Vertical SMD PTC Thermistors For Telecom Overload Protection

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PTCTT Series
Vishay BCcomponents
SOLDERING CONDITIONS
This SMD thermistor is only suitable for reflow soldering, in accordance with JEDEC J-STD-020. Soldering processes which can
be used are reflow (infrared and convection heating) and vapour phase. The maximum temperature of 260 °C during 10 s should
not be exceeded and no liquid flux should be allowed to reach the ceramic body.
Typical examples of soldering processes that will provide reliable joints without damage, are shown below.
Reflow soldering
300
T
(°C)
250
200
150
100
50
0
0
Typical values (solid line)
Process limits (dotted lines)
260 °C
≈ 245 °C
215 °C
180 °C
130 °C
10 s
10 s
40 s
2 K/s
50
100
150
200
250
t (s)
Vapour phase soldering
300
T
(°C)
250
200
215 °C
180 °C
20 to 40 s
150
130 °C
external preheating
100
100 °C
50
0
0
Typical values (solid line)
Process limits (dotted line)
internal preheating,
e.g. by infrared,
max. 2 K/s
50
100
150
forced
cooling
200
250
t (s)

HANDLING PRECAUTIONS
Because of the nature of PTC ceramic material the component should not be touched with bare hands, as the residue of
perspiration can influence component behaviour at high temperatures.
Handling forces applied to the component should be limited to 5 N in any condition.
Revision:03-Mar-14
4
Document Number: 29088
For technical questions, contact: [e-mail]
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