1180 pages

PICKERING SERIES 118
w
Ne olt
3 V sion
r
Ve
High Coil Resistance
Single-in-Line reed relays
Stacks on 0.2 x 0.33 inches pitch for up to 3 kilovolts
FEATURES
SoftCenter™ construction (see opposite)
Sputtered ruthenium switches rated at 10 Watts,
0.5 A or 15 Watts, 0.75 A
Plastic package with internal mu-metal magnetic
screen
They take up very little board area, conserving
space
0.19 nominal (4.80)
0.20 maximum (5.08
0.32 nominal (8.13)
0.33 maximum (8.38)
PICKERING
118-1-A-5/2D
Insulation resistance greater than 1012 Ω
100% tested for dynamic contact resistance for
guaranteed performance
Both types feature high quality, instrumentation grade
switch contacts and require a board area of only 0.2 x
0.33 inches (5.1 x 8.4 mm).
These relays feature internal mu-metal magnetic screens.
Mu-metal has the advantage of a high permeability and
low magnetic remanence and eliminates problems that
would otherwise occur due to magnetic interaction.
Relays of this size without magnetic screening would be
totally unsuitable for applications where dense packing is
required.
Initially, single pole versions only are available in this
range but double pole versions will follow in the future.
Dimensions in Inches
(Millimetres in brackets)
Pickering SoftCenter™ Construction
TYPICAL PICKERING CONSTRUCTION
Encapsulation
Shell
PICKERING
Two switch types are available. Switch type number 1
is better suited for general purpose applications. Switch
type 2 is better suited to low level or 'cold' switching.
Pin 1
Internal mu-metal magnetic screen
permitting high packing density without
magnetic interaction
118-1-A-5/2D
The Pickering Series 118 is a range of very sensitive reed
relays that are ideal for portable electronic instruments
or other applications where low power consumption and
a very small footprint is important. They have 5 volt coils
with a resistance up to 2200 Ω and the option of an
internal diode.
0.6 nominal (15.24)
0.61 maximum (15.5)
Actual size
Former-less
operating coil
Delicate
glass/metal
reed switch seal.
Must be
protected
Diode
Instrumentation
grade
reed switch
TYPICAL COMPETITOR’S CONSTRUCTION
www.pickeringrelay.com
Highest quality instrumentation grade switches
No mu-metal
magnetic screen
Internal
mu-metal
magnetic
screen
Encapsulation Soft inner
Shell
encapsulation
material
to protect
reed switch
Bobbinless
self
supporting
coil to
maximise
magnetic drive
High magnetic
interaction
with adjacent
relays
Reed switch
Diode
Coil winding
Hard outer
encapsulation
material
pickering
www.pickeringrelay.com
Very hard
moulding material
Coil supporting
bobbin,
wastes space
and reduces
magnetic drive
pickering
118/06/09