SFH-1215A Sony, SFH-1215A Datasheet

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SFH-1215A

Manufacturer Part Number
SFH-1215A
Description
(SFH-xxxxA) SC Protector
Manufacturer
Sony
Datasheet

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SFH-1215A
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fuses the fuse at the same instant when the system detects the overcharge. Usual protection element
takes long time to work because it works due to temperature rise of battery cells.
1. Application
At any moment, SC Protector system monitors the voltage of Li-ion rechargeable battery and its heater
The difference of SC Protector provides you high degree of freedom in the design of protection circuit.
Voltage sensing IC
in the figure below.
IC becomes high and the FET is switched on. As a result, current flow through the heater of the
protector, the fuses melt, and the battery stops to be charged any longer.
stops to be heated immediately and thus, the safety control protection is provided against both excess
voltage and excessive heating.
Typical application of protection for a Lithium ion rechargeable battery from overcharging is shown
When the voltage between a and b exceeds the pre-set limit value, the output of the voltage detector
Since the two fuses cut-off the voltage supplies from the charger and the battery, the SC Protector
Innovative way of safety control for Li-ion rechargeable battery
Battery
b
a
http://www.scc.sony.co.jp/html_e/products/detail/prd04_f.html
1-11-2, Osaki, Shinagawa-ku, Tokyo, 141-0032 Japan
Electronic Devices Business Group
TEL+81-3-5435-3943
Sony Chemicals Corporation
Self Control Protector
SC Protector
- 1 -
SC Protector
FAX+81-3-5435-3072
FET
Charger
Rev.39 2006/4/1
c
d

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SFH-1215A Summary of contents

Page 1

... Osaki, Shinagawa-ku, Tokyo, 141-0032 Japan http://www.scc.sony.co.jp/html_e/products/detail/prd04_f.html SC Protector Self Control Protector SC Protector Sony Chemicals Corporation Electronic Devices Business Group TEL+81-3-5435-3943 FAX+81-3-5435-3072 - 1 - Rev.39 2006/4/1 c ...

Page 2

Characteristics of SC Protector 2.1. Necessity 2.1.1. Reliability of the protection circuit All Li-ion rechargeable battery packs are equipped with at least one protection circuit (ex.IC+FET). In this case, when FET breaks, overcharge can’t be controlled ...

Page 3

... SFH-1212A 5.4x3.2x1.35mm Ag- mohms 6.5 - 35W 4.0 - 7.0V 7.4 - 13.8V 1.4 - 2.4ohms 5.5 - 9.1ohms 12A H1 12A For 1 cell in series For 2-3 cells in series SFH-0415A SFH-1215A 5.4x3.2x1.35mm Au plated Ag- mohms 7.0 - 30W 4.0 - 6.4V 7.4 - 13.8V 1.4 - 2.2ohms 5.5 - 8.3ohms 15A H1 15A Delivery time would be about 3 month. - Price might become higher than before ...

Page 4

... SCP that is not SFH, please change to SFH according to the following table as soon as possible. Number of cells in series 1cell 2cell 3cell SFH-0412A SFH-1212A SFH-0415A SFH-1215A SFG-0412A SFG-1212A SFD-045A SFD-125A SFD-047A SFD-127A Common model of thermal fuse with heater (* the typical value that is calculated from 100 deg.C, the temperature that we confirmed the reliability with our company’s standard PCB (0.6t Glass Epoxy single-sided copper-clad laminates) ...

Page 5

... Operation time by the heater (Electricity vs. clearing time at 25 deg.C) 100 √ Operating electric power [W]×Heater resistance[Ω Connect SC Protector with a constant power 2) Apply a current to the heater Measure the time the fuses take to melt. Power supply Electric Power( supply. SFH-12A SFH-15A ...

Page 6

... Operation time by the heater (Voltage vs. clearing time at 25 deg.C) 100 www.datasheet4u.com 10 for 1-2cells in series 1 0.1 0 5.5. Operation time by the heater (Ambient temperature vs. clearing time) 100 10 1 -40 -20 for 3cells in series 5 10 Voltage( Ambient temperature - 6 - SFH-0412A SFH-1212A SFH-1412A SFH-0415A SFH-1215A SFH-1415A for 4cells in series 15 20 SFH-12A (6W) SFH-15A(6.5W 100 ...

Page 7

... Current interrupting time (at25 deg.C) 100 10 www.datasheet4u.com 1 0.1 0.01 0.001 0 6.1. Current interrupting time (Ambient temperature vs. Clearing time by Rated Current * 2) 100 Current(A) - Ambient Temperature( ℃ SFH-12A SFH-15A 80 100 120 SFH-12A SFH-15A 140 160 100 ...

Page 8

Relations between the fusion state and the operation mode “The operation mode” can be estimated by the fusion state of the fuse element. 7.1. Heater operation In the case of over-voltage , “Both two sides of the middle electrode” ...

Page 9

... Terminal Size (Unit: mm. Not in scale.) *SFH series (Rated current 12-15A) 2 R0.2 0.65 0.95 10. Temperature profile of reflow soldering The temperature shown below is the temperature of the electrode portion of SC Protector. 180 deg.C-190 deg.C: 60s ...

Page 10

... You can confirm the latest information on SC protector in the following homepage. http://www.scc.sony.co.jp/html_e/products/detail/prd04_f.html 11.2. SC-Protector complies with environmental regulation. 1) SC-Protector complies with RoHS. www.datasheet4u.com 2) SC-Protector complies with SS-00259, Sony environmental management standard. 11.3. Catalog data is the typical value. 1) Catalog data is not a guaranteed value. 2) Catalog data is measured with our company’ ...

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