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Seiko Instruments Electronic Components Datasheet

MS920T Datasheet

Lithium Rechargeable Battery

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MS Lithium Rechargeable Battery MS-T series <Wider Temperature Range> 3V Type
MS920T / MS621T
FEATURES
• RoHS Compliant
• Approved by UL (Underwriters Laboratories Inc.)
UL File No. MH15628
APPLICATIONS
“MS621T” and “MS920T” have improved both higher and
lower temperature characteristics while leaving features of
the conventional MS rechargeable batteries. They offers
wider temperature range from -40℃ to 85℃.
SPECIFICATIONS
Backup power for Real Time Clock, or memory
Application
Automotive equipment, Security cameras, electronic
power, gas and water meters, electronic devices where
PCB temperature increases.
Type
MS920T
MS621T
Nominal
Voltage
(V)
3
3
Nominal
Capacity
(mAh)*1
6.5
3.0
Internal
Impedance
(Ω)*2
60
80
Operating Temperature
Size (mm)
Range
Diameter Height
−40℃ to +85℃ 9.5 2.0
−40℃ to +85℃ 6.8 2.1
Weight
(g)
0.45
0.23
* Please confirm the operating conditions, etc. with your contact at SII. We would like to provide the detail characteristics
of MS920T and MS621T.
*1. Nominal capacity: Typical value of discharge capacity between 3.1V and 2.0V
*2. Internal impedance is measured using an AC (Alternating Current) method at the fully charged state.
*3. A constant voltage charge is recommended, but due to a limit in charge current, it is necessary to insert a resistor to regulate the
charge current.
Please see Page 19 for resister value. Contact us for further details.
If a constant current charge is required, contact us for more information.
MS Lithium Rechargeable Batteries are not reflowable. Please mount them on PCB by hand soldering.
CHARACTERISTICS
• Discharge Characteristics (-40℃ capacity)
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
0.0
MS920T Discharge Characteristics
25℃
−40℃
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Capacity (mAh)
MS920T maintains about 3.5mAh at -40℃.
* Charge Discharge condition
Charge: 3.1V, 72 hours, max. 200 μA, RT
Discharge: 25 μA, c.o.v.=2.0V, RT
10 Micro Battery 2016


Seiko Instruments Electronic Components Datasheet

MS920T Datasheet

Lithium Rechargeable Battery

No Preview Available !

MS Lithium Rechargeable Battery MS-T series <Wider Temperature Range>
3V Type
CHARACTERISTICS
• Discharge characteristics (-40℃ capacity)
MS621T Discharge Characteristics
3.2
3.0
2.8
2.6
2.4 25℃
2.2
−40℃
2.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Capacity (mAh)
MS621T maintains about 1.2mAh at -40℃.
* Charge Discharge condition
Charge: 3.1V, 96 hours, max. 100μA, RT
Discharge: 15μA, c.o.v.=2.0V, RT
• High temperature characteristics (85℃ storage)
120
MS920T
100
MS920SE
80 MS621T
60 MS621FE
40
20
0
0
480
960
1440
1920
2400
Storage period (hour)
MS-T series's capacity retention ratio after High
temperature storage were greatly improved.
* 85℃ use of Conventional MS series is not guaranteed.
* Charge Discharge condition
MS920T
Charge: 3.1V, 72 hours, max. 200 μA, RT
Discharge: 25 μA, c.o.v.=2.0V, RT
MS621T
Charge: 3.1V, 96 hours, max. 100 μA, RT
Discharge: 15 μA, c.o.v.=2.0V, RT
• High temperature and high humidity characteristics (80℃90 storage)
120
100
80
60
40
20
0
0
MS920T
MS920SE
MS621T
MS621FE
10 20 30 40 50 60 70 80 90 100
Storage period (days)
MS-T series's capacity retention ratio after High
temperature and High humidity storage were
greatly improved.
* 80℃ use of Conventional MS series is not guaranteed.
* Charge Discharge condition
MS920T
Charge: 3.1V, 72 hours, max. 200 μA, RT
Discharge: 25 μA, c.o.v.=2.0V, RT
MS621T
Charge: 3.1V, 96 hours, max. 100 μA, RT
Discharge: 15 μA, c.o.v.=2.0V, RT
*c.o.v.…cut off voltage
Micro Battery 2016
11


Part Number MS920T
Description Lithium Rechargeable Battery
Maker Seiko
Total Page 2 Pages
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