DSS4 SRC Devices, Inc., DSS4 Datasheet - Page 7

• Manufacturer Part Number: DSS4
• Description: SIP Series Reed Relays
• Manufacturer: SRC Devices, Inc.

SRC
SRC
www.srcdevices.com
If relays are inserted in close proximity, the pickup and dropout voltages will be affected by the magnetic flux
produced when the coils are energized.
In general, worst-case magnetic interaction conditions for pull-in voltage in a matrix exist when all relay fields
have the same polarity and all of the fields are from adjacent relays (See figure).
The direction of the parameter shift is determined by whether the stray flux aids or bucks the flux produced by the
coil of the relay under consideration.
To calculate the change in pull-in voltage and dropout voltage, multiply the percent change shown by the relay’s
nominal voltage. For example, if the percent change in pull-in voltage is 14% for a 5V nominal relay, the pull-in
voltage will increase by 0.7 volts.
DEVICES
DEVICES
20.0%
15.0%
10.0%
5.0%
0.0%
0.1
Distance Between Centers of Adjacent Relays
1. Nominal
voltage is applied
to the adjacent relays.
2. The % increase of pull-in
and drop out of the relay under test is measured
and compared with the values without any
magnetic influence of adjacent relays.
0.2
Magnetic Interference
USA
Adjacent Relays
1B = 1-Form-B (Normally closed)
0.3
1A = 1-Form-A (Normally open)
SIL4/DSS4
(x, in inches)
1-866-SRC-8668
0.4
A complete part number is represented by the digits below.
Relay under test
0.5
x
Contact Form
MAGNETIC INTERFERENCE
ORDERING INFORMATION
x
0.6
Europe
Series
DSS4
0.7
SIL4
32-89-328850
XXXX XX XX X
Far East
886-2-2698-8422
Blank = No diode
B = Diode option
Coil voltage
03 = 3V (SIL4)
05 = 5V
12 = 12V
24 = 24V
(SIL4 & DSS4)
SIP SERIES REED RELAYS
10.0%
7.5%
5.0%
2.5%
0.0%
SIL4 DSS4 MVS4 MSS4
0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7
1. Nominal
voltage is applied
to the adjacent relays.
2. The % increase of pull-in
and drop out of the relay under test is measured
and compared with the values without any
magnetic influence of adjacent relays.
Distance Between Centers of Adjacent Relays
Magnetic Interference
Adjacent Relays
MVS4/MSS4
(in inches)
Relay under test
x
x
7