TYPE ESR SURFACE MOUNT POLYMER ALUMINUM
ELECTROLYTIC CAPACITORS.
Type ESR SMT capacitors are polarized, aluminum
capacitors which use a highly conductive solid
polymer as the electrolyte.
They have reliability advantages over both
aluminum and solid tantalum electrolytic capacitors.
Unlike aluminum capacitors, there is no liquid
electrolyte to evaporate and cause failure.
Unlike solid tantalum, which can fail short and burn, type ESR capacitors in normal operation fail
benignly as gradual open circuits after 25 to 50 years of operation.
The equivalent series resistance of these capacitors is much lower than for solid tantalum
capacitors, thus you get much higher ripple current handling capability.
NOTE:
Type ESR capacitors
are not
recommended for new design, and therefore, may be subject to
larger than expected minimum order quantities. CDE capacitor Types ESRD, ESRE, and ESRL
are
recommended for new design, and can be used as replacements to upgrade existing designs that
employ Type ESR capacitors. However, the ESRD, ESRE, and ESRL footprint is not compatible with
the Type ESR footprint.
Specifications:
Operating Temperature Range:
-55°C to +105°C at 100% rated Voltage.
Surge Voltage:
125% of the rated working Vdc
Capacitance Range:
4.7uF to 82 uF
Capacitance Tolerance:
±20% at 120Hz and +20°C.
DC Leakage Current (DCL):
After a 2 minute application of the rated voltage at
+ 20°C the DCL is;
4V: < 0.06CV
6.3V - 16V: < 0.04CV or 3µA (whichever is
Moisture Resistance:
After 500 hours storage at +60°C and 90 to 95%
R.H. without load, capacitor will meet the
following limits:
Capacitance change
from the initial value shall
not exceed;
+60%/-20% for 4.0 Vdc ratings,
+50%/-20% for 6.3 Vdc ratings,
+40%/-20% for all other ratings.
DCL
shall meet the initial specification.
D.F.
shall meet the initial specification. The ratings
of 68µf/4V, 82µf/4V, 68µf/6.3V, 47µf/8V, and
33µf/12.5V shall not exceed twice the initial
specification.
CDE [ CORNELL DUBILIER ELECTRONICS ]
