EnerChip™ Bare Die Batteries

©2016 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com

DS-72-41 Rev06

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Preliminary

BARE DIE TEMPERATURE GUIDELINES

Temperature Guidelines:

• Operating temperature (charged): -40°C to +70°C.

• Storage temperature (uncharged): -40°C to +125°C.

• Bare die assembly process temperatures: Do not exceed +200°C for duration consistent with die attach,

wire bond & mold compound cure periods.

BARE DIE ENCAPSULATION AND UNDERFILL GUIDELINES

EnerChip die undergo a minute amount of expansion and contraction when being charged and discharged.

Consequently, it is important to not encapsulate the die with overly compressive or rigid materials. Similarly,

application of rigid epoxy underfill compounds between a flip-chipped die and printed circuit board material is

discouraged.

If applying a protective overcoat on the die, Cymbet recommends either of the following silicone encapsulants,

applied at a minimum thickness of 100 microns:

Q1-4939

Q3-6646

Both materials are products from Dow Corning.

Contact Cymbet Applications Engineering to discuss any encapsulation or underfill requirements.

IN-CIRCUIT TESTING OF ENERCHIPS

Once the EnerChip has been assembled in system, it may be charged. If in-circuit testing is to be done for

purposes of testing the EnerChip itself or other circuitry on the board, the following guidelines should be

observed:

• Never apply a voltage outside the rated charge or discharge voltage range as specified in the respective

EnerChip data sheet.

• As with all batteries, the EnerChip has an inherent internal resistance. Never force a current into or out

of the EnerChip that would result in the battery voltage rising above or falling below a voltage outside the

rated charge or discharge voltage range as specified in the data sheet.

• Once the EnerChip has been charged - partially or fully - do not store or operate the EnerChip outside of the

operating temperature range as specified in the data sheet.

Please contact Cymbet Applications Engineering to discuss In-Circuit and System Testing when using

EnerChip Bare Die.

All customer applications are uinque and the EnerChip testing techniques may vary

between different end-user products. Please use the Cymbet.com Support Form or call +1-763-633-1780.