CR2477 Panasonic - BSG, CR2477 Datasheet

CR2477

Manufacturer Part Number

CR2477

Description

BATTERY LITHIUM COIN STD 3V 24MM

Manufacturer

Panasonic - BSG

Series

CR2477r

Datasheets

1.CR2032.pdf (3 pages)

2.CR2450.pdf (1 pages)

Specifications of CR2477

Battery Cell Size

Coin 24.5mm

Voltage - Rated

Capacity

1000mAh

Size / Dimension

0.96" Dia x 0.30" H (24.5mm x 7.7mm)

Termination Style

Requires Holder

Rechargeability

Discharge Current

0.2mA

Operating Temperature

-30°C ~ 60°C

Weight

0.37 oz (10.49g)

Lead Free Status / RoHS Status

Lead free / RoHS compliant by exemption

Other names

CR-2477
CR-2477/BN
CR2477/BE
P120

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CR2477

Manufacturer:

MURATA

Quantity:

999

Company:

Meier Automation Equipment Co., Limited

Part Number:

CR2477

Manufacturer:

SONY/索尼

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CR2477N

Manufacturer:

Panasonic

Quantity:

4 000

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(1) Reduction of battery voltage and deterioration of capacity through contact with antistatic

Incidents have been reported where terminal-mounted batteries for memory backup or coin-type lithium batteries have

come into contact with antistatic conductive materials, thus forming external discharge circuits and leading to voltage drops

or capacity deterioration.

In manufacturing plants using ICs, LSI and other semiconductor components, thoroughgoing antistatic measures are taken.

Various protective materials are used to prevent static: most of them have special compounds of carbon, aluminum foil and

other metals and are therefore conductive. These protective materials are used, for example, in the form of packaging bags,

trays, mats, sheets, films, corrugated boards and resin cases.

A protective material may have a resistance ranging from 10

terminals of a battery come into contact with this material, a current ranging from several milliamperes to several microamperes

will flow and the battery will discharge, causing voltage drop and capacity deterioration.

This information is generally descriptive only and is not intended to make or imply any representation, guarantee or warranty with respect to any cells and batteries. Cell and battery designs/specifications

are subject to modification without notice. Contact Panasonic for the latest information.

Battery-mounted PC boards were inadvertently

brought into contact with spacers and a conductive

rubber sheet. The battery

charge was exhausted.

A terminal-mounted battery was inserted into a

conductive mat. The battery charge was exhausted

in several days.

A battery-mounted PC board was inadvertently

brought into contact with a conductive resin case.

The battery charge was exhausted.

conductive materials

Reduction of Battery Voltage and Deterioration of Capacity

Rubber sheet

Conductive resin case

Conductive mat

Preventing Quality Problems

Spacer

LITHIUM HANDBOOK

to 10

When batteries are to be used near protective materials,

take every possible care to ensure that the (+) and (-)

terminals of the batteries or PC boards, etc. on which

batteries are mounted do not touch these protective

materials directly.

A battery was placed directly

on a rubber sheet spread over

a worktable. The (+) and (-)

terminals were in contact with

t h e s h e e t a n d t h e b a t t e r y

charge was exhausted.

/cm, for instance. This means that if the (+) and (-)

Conductive rubber sheet

Conductive

rubber sheet

Exclusive grounding line

AUGUST 2005

Related parts for CR2477

CR2477 Summary of contents

Page 1

... Reduction of battery voltage and deterioration of capacity through contact with antistatic conductive materials Incidents have been reported where terminal-mounted batteries for memory backup or coin-type lithium batteries have come into contact with antistatic conductive materials, thus forming external discharge circuits and leading to voltage drops or capacity deterioration ...

Page 2

... Preventing Quality Problems (2) Reduction of battery voltage and deterioration of capacity through contact between batteries Incidents have been reported where terminal-mounted batteries for memory backup or coin-type lithium batteries have come into contact each other, thus forming discharge circuits (shorted state) and leading to voltage drops or capacity deterioration ...

Page 3

... Preventing Quality Problems Memory Erasure Problems Coin-type lithium batteries are often used as the power supplies for memory backup in various equipment. However problems with the erasure of valuable data in the memory due to improper contact between the batteries and equipment can occur. 1. When batteries are to be used continuously for a ...

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