Panasonic ESB92D User Manual
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Power Switches
■
Application Notes
When using our Power Switches, please observe the fol low ing
items (“prohibited items”) and be cautious of the fol
items (“prohibited items”) and be cautious of the fol
low ing
in or
der to prevent dangerous ac
ci dents and de
te ri o ra tion
of per for mance.
1. Prohibited items and notes on mounting
1. Operation position for soldering (including pre heat ing)
Push type switches: Do not solder in the locked con di tion.
Slide type switches: Be sure to switch the lever se
cure ly
when soldering.
2. When soldering using a soldering iron, soldering con di tions
vary with the tip shape of the soldering iron, watt
age,
and PWB thickness. Thoroughly check the con
di tions
in ad
vance, including the heat re
sis tance rat
ing of the
solder.
3. Do not apply a load to terminals when soldering. Care
should be taken in this regard because a load may
deteriorate electric and mechanical characteristics.
deteriorate electric and mechanical characteristics.
4. Since the power switches are not sealed, do not wash
them.
5. When mounting a power switch to a through-hole type
PWB, the infl
uence of thermal stress on the switch is
greater than that on one-sided PWB.
Be sure to check the infl
Be sure to check the infl
uence as well as the heat
re sis tance rating of the solder.
2. Notes on circuit conditions
1. When a power switch is used with a weak current of less
than 500 mA, the fi
lm on the surface of con
tact cannot
be bro ken and contact failure may oc cur.
2. The durability of power switches varies with the type
of the switch: those for ac power and those for dc
pow er. When using switches for ac power, check the
durability. When us
pow er. When using switches for ac power, check the
durability. When us
ing switches for dc power, re
view
and check the load conditions of a relevant set.
3. Use the switches within their rating, including in
rush
current rating. Check particularly the inrush current
using a switch with a set. Since voltage fl
using a switch with a set. Since voltage fl
uc tuation
occurs depending on geographical re
gion, review the
derating for using a switch.
4. If load conditions vary in a set to be used, adapt
ability
with the switch must be considered. Be sure to check
the above mentioned notes 1 to 3.
the above mentioned notes 1 to 3.
3. Prohibited items and notes on mounting and op
er at ing
con di tions
1. In principle, operate the center of the lever.
2. For mounting an operation button:
2. For mounting an operation button:
1) Design so that the button is mounted to the cen
ter
of the lever.
2) Design so that the load in removal and mount
ing of
the button is within the range of the switch’s strength
rating of the operational part.
rating of the operational part.
3. Do not pull the switch rod while it is locked. Oth er wise,
the self-lock
ing func
tion may be broken, re
sult ing in a
lock ing fail ure or mal func tion. Make sure that the switch
is re
is re
leased es
pe cial ly when attaching/de
tach ing a but
ton
to the rod and as
sem bling/dis as sem bling the target
prod uct. (This ap plies to the self-lock ing switches) Set
the strength for de
the strength for de
tach ing your but
ton (knob) from our
switch rod to a max
i mum of 10 N in order to minimize
the pos
si bil i ty of a break
down of the locking func tion.
When de
sign ing your but
ton, re
fer to the following
shape and dimensions.
Before adopting our switches, check the requirements
carefully.
Before adopting our switches, check the requirements
carefully.
4. When mounting a switch to a set, check the switch
ON/OFF setting and the position of the op er a tion al part
(slide type, rotary type, etc.).
(slide type, rotary type, etc.).
5. D e sign a nd u s e s o t hat ex te rnal stre s s is n ot
continuously applied to the soldering parts (solder lugs
and PWB terminals) with a switch mounted in a set.
and PWB terminals) with a switch mounted in a set.
6. In actual operating conditions, do not use switch
es
un der ambient temperatures above 70 °C.
7. Avoid the following ambient surroundings and oth
er
con di tions because they may affect per for mance:
● Under an atmosphere of corrosive gas such as Cl
● Under an atmosphere of corrosive gas such as Cl
2
,
H
2
S, NOx, or SO
2
● In atmospheres of residual water drops, dew
con den sa tion, or adhesive water drops
● In liquids such as water, salt solution, oil, chem i cals,
and organic solvents
● In direct sunlight
● In dusty locations
4. Prohibited items and notes on storage con di tions
Since contact characteristics and soldering quality may
de te ri o rate due to sulfuration and oxidation of con
de te ri o rate due to sulfuration and oxidation of con
tacts
and ter mi nals, pay heed to the following items.
1. For storage and transport of the switches, avoid
1. For storage and transport of the switches, avoid
unpacking them, and store them at room tem
per a ture
and room humidity. Use them as soon as pos
si ble,
gen er al ly with
in 3 months, or within a max
i mum of 6
months after de liv ery.
2. Do not store the switches under conditions of high
tem per a ture and/or high humidity, or in a location
where cor ro sive gas may be generated.
where cor ro sive gas may be generated.
3. If some units remain after unpacking, store them af
ter
applying adequate moisture - proof and gas - proof
treat ment.
treat ment.
5. For use in equipment for which safety re quest ed
Although care is taken to ensure switch quality,
vari a tion of contact resistance (increase), short
cir cuits, open cir
vari a tion of contact resistance (increase), short
cir cuits, open cir
cuits, and temperature rise are
some prob lems that might be generated.
To de
To de
sign a set which places maximum emphasis
on safety, review the affect of any single fault of
a switch in advance and perform virtually fail-safe
design to ensure maximum safety by:
1. preparing a protective circuit or a protective
a switch in advance and perform virtually fail-safe
design to ensure maximum safety by:
1. preparing a protective circuit or a protective
de vice to improve system safety, and
2. preparing a redundant circuit to improve sys
tem
safety so that the single fault of a switch does
not cause a dangerous situation.
not cause a dangerous situation.
6. For actual use, be sure to refer to “Product Spec i fi ca tions
for Information.”
Reference of Customer's button design
Button
Lever
(2.5)
(3.0)
(3.3)
(0.6)
Switch rod top
Customer's
button
button
(0.6)
(R1.2)
Mar. 2005