Surge arrester
B88069X2253T253
S25-A90X
2-electrode arrester
Soldering parameter
Reflow soldering
Reflow profile
features
Sn- Pb eutectic Pb-free
assembly
assembly
Preheat and soak
- Temperature min
- Temperature max
- Time
Tsmin
Tsmax
tsmin to tsmax
100 °C
150 °C
60 ... 120 s
150 °C
200 °C
60 ... 180 s
Average ramp-up
rate
Tsmax to Tp
max. 3 °C/ s
max. 3 °C/ s
Liquidous
temperature
Time at liquidous
TL
tL
183 °C
60 ... 150 s
217 °C
60 ... 150 s
Peak package body
temperature *,
Classification
Tp, TC
220 ... 235 °C ** 245 ... 260 °C **
temperature **
Time (tp) ** within
5 °C of the specified
classification
20 s ***
30 s ***
temperature (TC)
Average ramp-down
rate
Tp to Tsmax
max. 6 °C/ s
max. 6 min
max. 6 °C/ s
max. 8 min
Time 25 °C to peak
temperature
* = Tolerance for peak profile temperature (Tp) is defined as a supplier minimum
and a user maximum.
** = For details please refer to JEDEC J-STD-020D.
*** = Tolerance for time at peak profile temperature (tp) is defined as a supplier
minimum and a user maximum.
Surface mounted components (SMD) may exhibit a temporary increase in the DC spark-over voltage after the solder reflow
process. The components will recover within 24 hours. There is no quality defect nor change in protection levels during the
temporary change in DC spark-over voltage.
Cautions and warnings
Do not operate surge arresters in power supply networks, whose maximum operating voltage
exceeds the minimum spark-over voltage of the surge arresters.
Surge arresters may become hot in the event of longer periods of current stress (burn risk). In the
event of overload the connectors may fail or the component may be destroyed.
Surge arresters must be handled with care and must not be dropped.
Do not continue to use damaged surge arresters.
The shown SMD pad dimensions represent a safe way to mount the arrester and are a
recommendation of the manufacturer. During the reflow process it must be assured that no solder
material reduces the insulation distance between the pads below the arrester.
SMD surge arresters should be soldered within 24 month after shipment.
Display of ordering codes for TDK Electronics products
The ordering code for one and the same product can be represented differently in data sheets, data books,
other publications, on the company website, or in order-related documents such as shipping notes, order
confirmations and product labels. The varying representations of the ordering codes are due to
different processes employed and do not affect the specifications of the respective products.
Detailed information can be found on the Internet under www.tdk-electronics.tdk.com/orderingcodes.
PPD AB PD / PPD AB PM
Version: 04 / 2021-06-03
Please read Cautions and warnings and
Page 5 of 7
Important notes at the end of this document.
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