1110 pages

PICKERING SERIES 111
Pico-SIL Reed Relays
w
Ne olt
3 V sion
r
Ve
Including coaxial types for up to 1.5 GHz
for stacking on 0.15 x 0.4 inches pitch
giving SUPERB PACKING DENSITY
FEATURES
SoftCenter™ construction (see opposite)
Mu-metal magnetic screening
Two package styles - Mu-metal package or
Plastic package with internal mu-metal magnetic
screen
Type 111 & 111RF
Plastic package with
internal mu-metal screen
0.145
(3.7)
P
Pi I C K
co E
-S R
IL I N
Re G
la
y
0.39 (10)
3 or 5 Volt coils with or without internal diode
0.145
(3.7)
0.39 (10)
PI
CK
1 1 ERI
1 P NG
- 1 En
- A gl
- 5 an
/1 d
D
Insulation resistance greater than 1012 ohms
Type 111P
Mu-metal package
They take up the minimum of board area,
conserving board space
0.26
(6.6)
0.26
(6.6)
100% tested for dynamic contact resistance
The Pickering Series 111 is a range of magnetically screened
single-in-line reed relays that stack on 0.15 inches by 0.4
inches pitch. They have an identical footprint to the Series
110 and 112 but the height is reduced to only 0.26 inches
(6.6mm). The switch rating of 3 Watts is adequate for most
instrumentation applications. If a higher power rating is
required, please look at our Series 110 or 112 which have
a 10 Watts rating and an identical pin-out. The range also
includes the type 111RF, a 50 ohms coaxial device suitable
for use up to 1.5GHz.
These relays require around one third the board area of
the more usual 0.2 x 0.8 inch devices and are ideal for high
density applications.
Two package styles are available:
The type 111 is encapsulated in a mu-metal can. The
coaxial version, type 111RF, is also available in this
package style.
0.1 (2.54)
pin spacing
Pin 1
Dimensions in Inches (Millimetres in brackets)
Pickering SoftCenter™ Construction
TYPICAL PICKERING CONSTRUCTION
TYPICAL COMPETITOR’S CONSTRUCTION
No mu-metal
magnetic screen
Encapsulation Soft inner
Shell
encapsulation
material
to protect
reed switch
Internal
mu-metal
magnetic
screen
Bobbinless
self
supporting
coil to
maximise
magnetic drive
Very hard
moulding material
High magnetic
interaction
with adjacent
relays
Reed switch
Diode
Coil winding
Hard outer
encapsulation
material
The type 111P is encapsulated in a plastic package and
features an internal mu-metal screen. An internal diode is
an option in both types.
Magnetic screening is essential to avoid magnetic interaction
problems. Interaction is usually measured as a percentage
increase in the voltage required to operate a relay when
two additional relays, stacked one each side, are themselves
operated. An unscreened device mounted on this pitch would
have an interaction figure of around 40 %. Relays of this
size would therefore be totally unsuitable for applications
where dense packing is required. Pickering Series 111 have an
interaction figure of around 1 percent.
0.1 (2.54)
pin spacing
Pin 1
30%
Coil supporting
bobbin,
wastes space
and reduces
magnetic drive
www.pickeringrelay.com
Highest quality instrumentation grade switches
Other
Unscreened
0.2 inch relays
20%
Percentage
Interaction
109P
110
10%
111P
(change in
108 112
operate
106
109
voltage)
111
0.1
Key:
107
101 Pickering
relays 100
0.3
0.2
Package Width (inches)
Unscreened
pickering
www.pickeringrelay.com
104
105
Internal
mu-metal
screen
0.4
Complete
mu-metal
can
pickering
111/06/09