1050 pages

PICKERING SERIES 105
Single-In-Line Reed Relays
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Ne olt
3 V sion
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Ve
FEATURES
SoftCenter™ construction (see opposite)
Encapsulated in a plastic package with internal
mu-metal magnetic screen
Wide range of switch congurations Form A, 1 Form B, 2 Form A, 1 Form C
Two pole relay requires the same board area as
the single pole type
P
IC
C KE
1 lac RI
0 to NG
5 n- E
- on LE
1 -S C
- ea TR
A , O
N
- En IC
5 gl S
/ an
1 d
D
Dry and mercury wetted switches are available
with the same pin conguration and footprint.
(see “A useful tip” below)
Insulation resistance greater than 1012 ohms for
dry Form A devices
3, 5, 12 and 24 volt coils are standard, with or
without internal diode
100% tested for dynamic contact resistance
0.26 (6.6)
0.75
(19.1)
1 Form A, 1 Form C 0.31 (7.9)
1 Form B, 2 Form A 0.42 (10.7)
Dimensions in Inches
(Millimetres in brackets)
Pin 1
Switch Ratings - Dry Switches
1 Form A (energize to make), 10 watts at 200V
1 Form A (energize to make), 10 watts at 500V
1 Form B (energize to break), 10 watts at 200V
1 Form C (change-over), 3 watts at 200V
The Series 105 is a range of Single-in Line reed relays,
available with a wide variety of switching configurations and
switch types, including mercury wetted versions. They feature
internal mu-metal magnetic screens which allow high packing
density without the risk of magnetic interaction problems.
The Pickering Series 100, 101, 103, 106, 107 and 108 all have
the same pin locations as the Series 105. If a reduced coil
power is desired, please consider our Series 100 and 101
which may be driven directly from CMOS logic. If a higher
packing density is required, smaller devices are available in
other Pickering SIL ranges.
In addition to the relays shown on this brochure, many other
special types are manufactured to meet customers specific
requirements. Please contact our technical sales department
for further information or samples.
2 Form A (energize to make), 10 watts at 200V
Switch Ratings - Dry Switches
1 Form A (energize to make), 50 watts at 500V
1 Form A (Position insensitive), 30 watts at 350V
2 Form A (energize to make), 50 watts at 500V
Pickering SoftCenter™ Construction
TYPICAL PICKERING CONSTRUCTION
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
Very hard
moulding material
High magnetic
interaction
with adjacent
relays
A useful tip
If there is a chance that you might want to use mercury
wetted relays instead of dry relays at a later date, for example
to increase switch ratings, lay out the PCB initially as though
for the mercury wetted type with pin 1 uppermost. This allows
uprating later without PCB changes. The mercury versions
in the Series 105 have identical pin configurations to the dry
types.
Bobbinless
self
supporting
coil to
maximise
magnetic drive
pickering
www.pickeringrelay.com
Reed switch
Diode
Coil winding
Hard outer
encapsulation
material
Coil supporting
bobbin,
wastes space
and reduces
magnetic drive
pickering
105/06/09