MEMS JSO-LC Soldering and Handling Notes

MEMS – Oscillator JSO LC series
Low Power (H)CMOS Output
This document contains useful information how to handle Jauch JSO LC MEMS oscillators
ESD handling
Jauch JSO LC oscillators are semiconductor devices, that should be protected against
electrostatic discharge during transportation, storage, manufacturing process and assembled
module handling.
Please refer to JEDEC JESD625 for more information about ESD control methods to avoid
electrostatic discharge, that could result in a degradation or even a total failure of the
semiconductor device.
JSO LC oscillators do not suffer from ESD of 2kV max. (HBM according to JEDEC JESD22)
Reflow Soldering
A Pb-free reflow soldering profile with a peak reflow soldering temperature of 260°C max.
according to JEDEC J-STD-020 can be applied. Up to 3 reflow cycles are acceptable.
Please use thermocoupled elements to control the maximum temperature and the
recommended reflow soldering profile, to ensure that the maximum soldering temperature is
not exceeded.
It is difficult to assess the components robustness against alternative soldering methods like
vapor phase soldering, as the temperature profiles may show large variations depending on
each customer’s soldering equipment and conditions. Please accept that we’re unable to
confirm the components robustness for any kind of alternative soldering processes.
Manual Soldering
Manual soldering can easily damage components in very small SMD packages, as they can
heat up very easily. In case of doubt, better use a new oscillator, instead of re-using a part
that has been subjected to manual soldering.
Ch. Buechler
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MSL level
JSO LC oscillators are quite insensitive against moisture. Opened reels can be stored at the
storage conditions being recommended by JEDEC J-STD-020 MSL level 1. Re-sealing of
opened reels is not required.
Storage
During storage of the component, the storage conditions should never exceed the
temperature limits as specified in the catalog or datasheets. Please note that the storage
temperature range applies to the component only.
Preferably, please keep the storage temperature between +10° ~ +45°C (50°F ~ 115°F)
and below 60% RH as long as the component is packed and reeled.
PCB cleaning recommendation
The plastic mold material of Jauch JSO LC oscillator packages is tolerant against aqueous or
other common solvents like alcohol or acetone. We recommend using Isopropyl, similar
alcohol-based solvents or demineralized water for PCB cleaning.
Ultrasonic Cleaning
Ultrasonic cleaning should be avoided, as there is a risk of generating mechanical
resonances, which may cause an intermittent or permanent damage of the JSO LC oscillator.
Please be aware that ultrasonic waves propagate over a board in a way which is not under
control of the oscillator supplier.
Marking Information
JSO21:
JSO22 ~ JSO75:
Ch. Buechler
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The letter “A” stands for one out of three assembly location codes:
A = Malaysia
B = Thailand
C = Taiwan
“XXXX” stands for 4 alpha-numeric characters representing the manufacturing lot code
Absolute Maximum Ratings (electrical)
Junction Temperature:
Operating Temperature (*):
Storage Temperature:
VDC:
Electrostatic Discharge (HBM):
+150°C max.
+125°C max.
-55°C min. ~ +150°C max.
-0.5V min. ~ 4.0V max.
2000V max.
Note: (*) Ambient temperature not causing damage to the component, stability spec may not
be guaranteed, refer to JSO LC datasheet for details about available temp. ranges and
stabilities.
Environmental Reliability Specification
Moisture Sensitivity Level:
Solderability:
Mechanical Shock:
Mechanical Vibration:
Ch. Buechler
JEDEC J-STD020: MSL1, 260°C max.
MIL-STD-883F, method 2003
MIL-STD-883F, method 2002
MIL-STD-883F, method 2007
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