Polarized latching relay Fujitsu with a minimal power consumption
Do you know, that a relay can have a zero power consumption in a relaxed state? Latching (bistable) relays have these feature. In the era, when it is a general effort to decrease power requirements of devices, is the usage of these relays even more actual.
Electromagnetic relay, as a switching element, is one of the oldest
electronic components. Inspite of a strong rival in the form of
SSR (solid state
relay), has an electromagnetic relay some convenient properties, for which is
its usage more convenient in many cases. Let´s mention for example a high
dielectric strength coil/contacts as well as between contacts, minimal power
losses on contatcs and a linear transmision of small signals without a
distortion. Inspite of, that the coil of the relay is always optimalized for a
minimal power consumption, still it is not neglible, especially at relay arrays
or at battery powered devices. a solution is to use a polarized latching
(bistable) relay. As already a name says, a latching relay is designed so, that
it has two relaxed states, i.e. it needs power supply only for a change of
state, in a relaxed state (on or off) it has a zero power consumption.
Usually the coil of a latching relay is constructed as double, one serves for
setting, secound one for resetting. Controlling voltage is the same, only for
the change of state it is necessary to bring an impulse into the appropriate
coil. There also exist latching relays with only one coil, where a state change
can be reached by impulses of reversed polarity. Latching relay is suitable
everewhere, where a usual relay, except circuits, where it is necessary to
ensure switched off contacts after power disconnection. Latching relay is known
already for many decades, but a bigger usage of these relays was probably
prevented a higher price of controlling circuit, because a double circuit is
necessary. This disadvantage is in presence practically eliminated thanks to a
significantly lower price of usual semiconductors in comparison to a price of
relay, and a much bigger advantage appears to be a zero power consumption a
relaxed state.
Advantages / Features:
- polarized latcing relay – zero power consumption in a relaxed state
- 1 change-over contact, THT technology for PCB mounting
- gold plated contacts from AgSnO2
- carrying/ continuous current 10/8A
- specified temperature -40 to +70°C
- versions with 3V, 5V, 6V, 9V, 12V and 24V coil
- dimensions 29x10x12,5 mm (L x W x H)
- sealed type, wash tight
From our offer of
latching relays, we would like to introduce you a relay
Fujitsu JSL. It is a power relay with one change-over contact. Maximal carrying
current 10A, continuous current 8A and a high dielectric strength of 5000V AC
(coil/contacts) enable its usage in many power applications. Gold plated, silver
based contacts ensure a low contacts resistance and a long lifetime. Relay JSL
is Cadmium free, sealed, wash tight. We offer to you 5, 12 and a 24V version -
JSL-D5N-K,
JSL-D12N-K,
JSL-D24N-K.
Further detailed information are contained in the
datasheet JSL. General
application notes for usage of relays you can find in the
Engineering reference.
On the
Fujitsu, website, you can also find replacements for the relays from
other companies.
20110919121.10.2011ComponentsSOS electronic s.r.o.