\
2.7V 25F
FEATURES
BCAP0025 P270 S01
ESHSR-00 25C0-0 02R7
ELECTRICAL SPECIFICATIONS
Rated Voltage, V
R
1
Surge Voltage
2
Rated Capacitance, C
Capacitance Tolerance
Initial DC-ESR, R
DC
5
3
•
High performance product with low ESR
•
Exceptional shock and vibration resistance
•
Long lifetimes with up to 500,000 duty cycles*
•
Compliant with UL, RoHS, and REACH requirements
•
Recommended Application:
Actuators, Emergency Lighting, Telematics, Automotive,
Security Equipment, Backup System, Smoke Detectors,
Advanced Metering, and Others
Min. / Max.
4
Average
Max.
4
Average
Maximum Leakage Current
6
Maximum Peak Current, Non-repetitive
2.7 VDC
2.85 VDC
25 F
-10% /+20%
+5% /+10%
25 mΩ
15 mΩ
49 μA
20.7 A
TYPICAL LIFETIME CHARACTERISTICS*
Projected DC Life at Room Temperature
(Continuous charging at V
R
and 25 ± 10 °C)
8
DC Life at Standard High Temperature
(Continuous charging at V
R
and 65°C)
8
DC Life at De-Rated Voltage & Higher Temp.
(Continuous charging at 2.3V and 85°C)
8
Projected Cycle Life at Room Temperature
(Constant current charge-discharge from V
R
to
1/2V
R
at 25 ± 10 °C)
8
10 years
1,500 hours
1,500 hours
500,000
cycles
4 years
Shelf Life
(Stored without charge at 25 ± 10 °C)
See Note on Mounting Recommendations
10
TYPICAL THERMAL CHARACTERISTICS
Thermal Resistance, R
th
(Housing)
Thermal Capacitance, C
th
9
Usable Continuous Current (ΔT = 15°C)
9
Usable Continuous Current (ΔT = 40°C)
43 °C/W
5.5 J/°C
3.7 A
6.1 A
DIMENSION & WEIGHT
D (+0.5)
16.0 mm
L (±1.0)
25.5 mm
d (±0.05)
0.8 mm
Nominal Weight
H1 (Min.)
H2 (Min.)
A (±0.5)
6.7 g
15.0 mm
19.0 mm
7.5 mm
SAFETY & ENVIRONMENTAL
RoHS & REACH & UL
Standard (-40°C to 65°C)
at 2.7V
25.3 mWh
at 2.7V
3.7 Wh/kg
at 2.7V
5.2 kW/kg
at 2.7V
10.8 kW/kg
Compliant
OPERATING ENVIRONMENT / POWER & ENERGY
Operating Temperature Range
Extended (-40°C to 85°C)
7
Maximum Stored Energy, E
max
at 2.3V
18.3 mWh
7
Gravimetric Specific Energy
at 2.3V
2.7 Wh/kg
7
at 2.3V
3.7 kW/kg
Usable Specific Power
7
Impedance Match Specific Power
at 2.3V
7.8 kW/kg
*Results may vary. Additional terms and conditions, including the limited warranty, apply at the time of purchase. See the warranty details for applicable operating and use requirements.
3001978-EN.1
Page 1 of 2
2.7V 25F
BCAP0025 P270 S01
NOTE
1. Surge Voltage
Absolute maximum voltage, non-repetitive. The duration must not exceed 1
second.
2.
Rated Capacitance (Measurement Method)
˃
Constant current charge with 10 mA per farad to V
R
.
e.g. In case of 2.7V 25F cell, 10 * 25 = 250 mA
˃
Constant voltage charge at V
R
for 5 min.
˃
Constant current discharge with 10 mA per farad to 0.1V.
6. Maximum Peak Current
˃
Current that can be used for 1-second discharging from the rated voltage to the
half-rated voltage under the constant current discharging mode.
=
½½
△ / 5
where is the maximum peak current (A);
½
is the rated voltage (V);
△ is the discharge time (sec); △ = 1 sec in this case;
is the rated capacitance (F);
is the maximum DC-ESR (Ω)
˃
The stated maximum peak current should not be used in normal operation and
is only provided as a reference value.
½½
7. Energy & Power (Based on IEC 62391-2)
˃
˃
Maximum Stored Energy, E
max
(Wh) =
Gravimetric Specific Energy (Wh/kg) =
=
× (
)
)
)
˃
Usable Specific Power (W/kg) =
.½
where is the capacitance (F);
is the absolute value of the discharge current (A);
is the measurement starting voltage, 0.8ⅹV
R
(V);
is the measurement end voltage, 0.4ⅹV
R
(V);
is the time from discharge start to reach
(s);
is the time from discharge start to reach
(s)
×
˃
Impedance Match Specific Power (W/kg) =
.½
×
3. Initial DC-ESR (Measurement Method)
˃
Constant current charge with 10 mA per farad to V
R
.
˃
Constant voltage charge at V
R
for 5 min.
˃
Constant current discharge with 40 * C * V
R
[mA] to 0.1V.
e.g. In case of 2.7V 25F cell, 40 * 25 * 2.7 = 2,700 mA
8. DC Life and Cycle Life Test
˃
End-of-Life (EOL) Conditions:
-
Capacitance:
-20% from the rated minimum value
-
DC-ESR:
+100% from the specified maximum initial value
˃
Capacitance and ESR measurements are taken at 25°C.
9. Usable Continuous Current
˃
Maximum current which can be used within the allowed temperature range under
the constant current discharging mode.
=
×
where is the maximum continuous current (A);
is the change in temperature (°C);
is the thermal resistance (°C/W);
is the maximum DC-ESR (Ω)
˃
˃
10. Mounting Recommendations
△
=
where
is the DC-ESR (Ω);
△ is the voltage drop during first 10ms of discharge (V);
is the absolute value of the discharge current (A)
˃
˃
˃
˃
4. Average
˃
Typical percentage spread that may be present in one shipment.
5. Maximum Leakage Current (Measurement Method)
˃
The capacitor is charged to its rated voltage V
R
at 25°C.
˃
Leakage current is the amount of current measured after 72 hours of continuous
holding of the capacitor at V
R
.
When ordering, please reference the Maxwell Model Number below.
Maxwell Model Number:
BCAP0025 P270 S01
˃
Provide properly spaced holes for mounting according to the specified cell dimension
in order to minimize the terminal leads of the cell being mechanically stressed.
Do not place any through-holes directly underneath the cell or in the close proximity
of the cell. Allow at least 5mm distance from any point on the outer diameter of the
cell to the outer diameter of any through-hole.
Protective coating of components on the PCB is strongly recommended in order to
reduce the risk of the components being damaged in an event of electrolyte leakage.
The recommended mounting orientation is with the terminal leads pointing upward.
Provide at least 2mm clearance from the safety vent and do not position anything
near the safety vent that may be damaged by the vent rupture.
Assemble the cell on the PCB taking into account that the cell may not be completely
hermetic during its lifetime. Electrolyte vapor and gases generated during normal
operation may escape the package.
Soldering guide for small and medium size cells is available and can be found at
www.nesscap.com under Support -> Download.
Maxwell Part Number:
133518
Nesscap Model Number:
ESHSR-0025C0-002R7
Maxwell Technologies, Inc.
Global Headquarters
3888 Calle Fortunada
San Diego, CA 92123
USA
Tel: +1 (858) 503-3300
Fax: +1 (858) 503-3301
Maxwell Technologies SA
Route de Montena 65
CH-1728 Rossens
Switzerland
Tel: +41 (0)26 411 85 00
Fax: +41 (0)26 411 85 05
Maxwell Technologies, GmbH
Leopoldstrasse 244
80807 Munich
Germany
Tel: +49 (0)89 4161403 0
Fax: +49 (0)89 4161403 99
Maxwell Technologies
Shanghai Trading Co., Ltd
Room 1005, 1006, 1007
No. 1898, Gonghexin Road,
Jing An District, Shanghai 200072
P.R. China
Tel: +86 21 3680 4600
Fax: +86 21 3680 4699
Nesscap Co., Ltd.
17, Dongtangiheung-ro 681beon-gil,
Giheung-gu, Yongin-si,
Gyeonggi-do
17102
Republic of Korea
Tel: +82 31 289 0721
Fax: +82 31 286 6767
The data in this document 3001978 corresponds to the data in Nesscap document 20170613 Rev18. The information in this document is correct at time of printing and is subject to change without notice. Images are not to scale.
MAXWELL TECHNOLOGIES, MAXWELL, MAXWELL CERTIFIED INTEGRATOR, ENABLING ENERGY’S FUTURE, NESSCAP, BOOSTCAP, D CELL, CONDIS and their respective designs and/or logos are either trademarks or registered trademarks of
Maxwell Technologies, Inc., and/or its affiliates, and may not be copied, imitated or used, in whole or in part, without the prior written permission Maxwell Technologies, Inc. All contents copyright © 2017 Maxwell Technologies, Inc. All
rights reserved. No portion of these materials may be reproduced in any form, or by any means, without prior written permission from Maxwell Technologies, Inc.
3001978-EN.1
Page 2 of 2
MCU
京公网安备 11010802033920号
EEWORLD
