DIP 14 SERIES REED RELAYS
DESCRIPTION
MSS2 MSS7 PRMA
DSS7 PRME MVS2 MVS7
RATINGS (@ 25˚ C)
APPLICATIONS
FEATURES
APPROVALS
SRC Devices epoxy molded DIP 14 Series offers a variety of contacts and schematics to meet the needs of a wide
range of applications. It features the MVS2/MVS7 models designed for high reliability. The MSS2/7 DIPs are
1-Form-A relays equipped with the MYAD®all-position mounting switch. With switching up to 50 Watts and a
4000V isolation option, the DIP 14 Series is a relay package that allows for automatic insertion directly on PCBs
as well as inser tion into standard 14 Pin DIP sockets.
All position mercur y contacts on some models
Stable contact resistance over life
4000 Vac input-output isolation
Bounce free operation
High insulation resistance
Switching speed of 300Hz
Long life > 1 billion operations
Epoxy molded for automatic board processing
FCC68 compatible (MSS2 & MSS7)
Automatic test equipment
Process control
Industrial
Telecom
Datacom
High-end security systems
Signaling
Metering
UL approval (DSS7 & PRMA)
EN 60950 cer tified (MVS7, DSS7 & MSS7)
CSA approval (PRMA)
Parameter Min Typ Max Unit
Switching Voltage
PRMA/PRME/DSS7 200 Volts
PRMA Form C 100 Volts
MSS2/MSS7 500 Volts
MVS2/MVS7 1000 Volts
Switching Current
PRMA/PRME/DSS7 0.5 Amps
PRMA Form C 0.25 Amps
MSS2/MSS7/MVS2/MVS7 2 Amps
Carry Current
PRMA/PRME/DSS7 2 Amps
PRMA Form C 0.4 Amps
MSS2/MSS7 3 Amps
MVS2/MVS7 3 Amps
Switching Frequency
PRMA/PRME/DSS7 500 Hz
PRMA Form C 50 Hz
MSS2/MSS7/MVS2/MVS7 200 Hz
Contact Resistance
PRMA/PRME/DSS7 150 m
PRMA Form C 200 m
MSS2/MSS7/MVS2/MVS7 100 m
(See detailed specifications for more information.)
SRC DEVICES
SRC DEVICES
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DIP 14 SERIES REED RELAYS
SPECIFICATIONS
MSS2 MSS7 PRMA DSS7 PRME MVS2 MVS7
All parameters are at 25°C unless otherwise stated.
Operate voltage, release voltage, and coil resistance will change
approximately 0.4%/°C as ambient temperature varies.
MSS2
Molded 8 Pin
All position
Wetted contacts
MSS7
Molded 4 Pin
All position
Wetted contacts
PARAMETER CONDITIONS SYMBOL MIN TYP MAX MIN TYP MAX UNITS
Contact Ratings
Switching Voltage Max DC/PeakAC Resistive VL- - 500 - - 500 Volts
Switching Current Max DC/PeakAC Resistive IL- - 2 - - 2 Amps
Carry Current Max DC/PeakAC Resistive IC- - 3 - - 3 Amps
Contact Rating Max DC/PeakAC Resistive - - 50 - - 50 Watts
Life Expectancy Signal Level 1.0 V 10mA - 200 - - 200 - x106Ops
Related Loads(1)
Static Contact Resistance 50mV, 10mA CR - 40 100 - 65 100 m
Dynamic Contact Resistance .5V, 50mA at 100Hz, 1.5 msec DCR - N/A - - N/A - m
Contact Material - Hg - - Hg -
Hg Content - 16 - - 16 - mgrams
Relay Specifications
Insulation Resistance Between all isolated pins IR 1081010 -10
81010 -
at 100V, 25°C, 40% RH
Capacitance Across Open Contacts - 1.5 2 - 1.2 2 pF
Open Contact to Coil 3 4 - 3 4 pF
Dielectric Strength Between Contacts 1400 - - 2000 - - VDC/Peak AC
Contacts to Coil I/O 1400 - - 5600 - - VDC/Peak AC
Operate Time, At Nominal Coil Voltage TOP - 1.2 1.75 - 1.2 1.75 ms
including bounce 10Hz Square Wave
Release Time Zener-Diode Suppression TREL - 1 1.50 - 1 1.50 ms
Environmental Ratings
Storage Temperature TA-40 - +105 -40 - +105 °C
Operating Temperature TO-38 - +75 -38 - +75 °C
Soldering Temperature Applied to pins, 5 sec. max. - 260 - - 260 °C
Vibration Resistance 10Hz - 500Hz G - - 10 - - 10 Gs
(Survival)
Shock Resistance 11±1ms, 1/2Sine Wave S - - 30 - - 30 Gs
(Survival)
Weight - 2.3 - - 2.3 - grams
(1) Refer to life graphs
SRC DEVICES
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USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
www.srcdevices.com
DIP 14 SERIES REED RELAYS
SPECIFICATIONS
MSS2 MSS7 PRMA DSS7 PRME MVS2 MVS7
All parameters are at 25°C unless otherwise stated.
Operate voltage, release voltage, and coil resistance will change
approximately 0.4%/°C as ambient temperature varies.
PRMA
Molded 8 Pin
Form-C
Dry Reed
PRMA
Molded 8 Pin
Form-A&B
Dry Reed
PARAMETER CONDITIONS SYMBOL MIN TYP MAX MIN TYP MAX UNITS
Contact Ratings
Switching Voltage Max DC/PeakAC Resistive VL- 100 - - 200 Volts
Switching Current Max DC/PeakAC Resistive IL- 0.25 - - 0.5 Amps
Carry Current Max DC/PeakAC Resistive IC- 0.4 - - 2 Amps
Contact Rating Max DC/PeakAC Resistive - 3 - - 10 Watts
Life Expectancy Signal Level 1.0V 10mA - 20 - 300 500 - x106Ops
Related Loads(1)
Static Contact Resistance 50mV, 10mA CR - 200 - - 150 m
Dynamic Contact Resistance .5V, 50mA at 100Hz, 1.5 msec DCR - N/A - - N/A - m
Contact Material - Rh - - Ru -
Relay Specifications
Insulation Resistance Between all isolated pins IR 1091010 -10
10 1012 -
at 100V, 25°C, 40% RH
Capacitance Across Open Contacts - 2.5 3 - 0.7 1 pF
Open Contact to Coil 3 3 - 1.5 2 pF
Dielectric Strength Between Contacts 250 - - 250 - - VDC/Peak AC
Contacts to Coil I/O 1400 - - 1400 - - VDC/Peak AC
Operate Time, At Nominal Coil Voltage TOP - 1.5 2 - .25 0.5 ms
including bounce 10Hz Square Wave
Release Time Zener-Diode Suppression TREL - 1.5 3 - .25 0.5 ms
Environmental Ratings
Storage Temperature TA-40 - +105 -40 - +105 °C
Operating Temperature TO-40 - +80 -40 - +80 °C
Soldering Temperature Applied to pins, 5 sec. max. - 260 - - - 260 °C
Vibration Resistance(2) 10 Hz - 500 Hz for PRMA Form A&B G - - 1 0 - - 20 Gs
(Survival) 5Hz - 500Hz for PRMA Form C
Shock Resistance 11±1ms, 1/2Sine Wave S - - 50 - - 100 Gs
(Survival)
Weight - 1.5 - - 1.5 - grams
(1) Refer to life graphs
(2) Use caution not to exceed vibration resistance limits while ultrasonically cleaning relays with DYAD switches. Contact SRC Devices Engineering for more
details/recommendations.
SRC DEVICES
SRC DEVICES
www.srcdevices.com
USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
DIP 14 SERIES REED RELAYS
SPECIFICATIONS
All parameters are at 25°C unless otherwise stated.
Operate voltage, release voltage, and coil resistance will change
approximately 0.4%/°C as ambient temperature varies.
DSS7
Molded 4 Pin
Dry Reed
PRME
Molded 8 Pin
Low profile
Dry Reed
PARAMETER CONDITIONS SYMBOL MIN TYP MAX MIN TYP MAX UNITS
Contact Ratings
Switching Voltage Max DC/PeakAC Resistive VL- - 200 - 200 Volts
Switching Current Max DC/PeakAC Resistive IL- - 0.5 - 0.5 Amps
Carry Current Max DC/PeakAC Resistive IC- - 2 - 2 Amps
Contact Rating Max DC/PeakAC Resistive - - 10 - 10 Watts
Life Expectancy Signal Level 1.0 V 10mA 300 500 - 300 500 - x106Ops
Related Loads(1)
Static Contact Resistance 50mV, 10mA CR - - 150 - 150 m
Dynamic Contact Resistance .5V, 50mA at 100Hz, 1.5 msec DCR - N/A - - N/A - m
Contact Material - Ru - - Ru -
Relay Specifications
Insulation Resistance Between all isolated pins IR 1010 1012 -10
10 1012 -
at 100V, 25°C, 40% RH
Capacitance Across Open Contacts - 0.7 1 - 0.8 1 pF
Open Contact to Coil 1.5 2 1.5 2 pF
Dielectric Strength Between Contacts 250 - - 250 - - VDC/Peak AC
Contacts to Coil I/O 5600 1000 VDC/Peak AC
Operate Time, At Nominal Coil Voltage TOP - 0.25 0.5 - 0.25 1 ms
including bounce 10Hz Square Wave
Release Time Zener-Diode Suppression TREL - 0.25 0.5 - 0.25 0.5 ms
Environmental Ratings
Storage Temperature TA-40 - +105 -40 - +105 °C
Operating Temperature TO-40 - +80 -40 - +80 °C
Soldering Temperature Applied to pins, 5 sec. max. - - 260 - - 260 °C
Vibration Resistance(2) 5Hz - 500Hz G - - 20 - - 20 Gs
(Survival)
Shock Resistance 11±1ms, 1/2Sine Wave S - - 100 - - 100 Gs
(Survival)
Weight - 1.5 - - 1.5 - grams
(1) Refer to life graphs
(2) Use caution not to exceed vibration resistance limits while ultrasonically cleaning relays with DYAD switches. Contact SRC Devices Engineering for more
details/recommendations.
MSS2 MSS7 PRMA
DSS7 PRME MVS2 MVS7
SRC DEVICES
www.srcdevices.com
USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
DIP 14 SERIES REED RELAYS
SPECIFICATIONS
MSS2 MSS7 PRMA
DSS7 PRME MVS2 MVS7
All parameters are at 25°C unless otherwise stated.
Operate voltage, release voltage, and coil resistance will change
approximately 0.4%/°C as ambient temperature varies.
MVS7
4 Pin DIP
Wetted Contacts(3)
MVS2
8 Pin DIP
Wetted Contacts(3)
PARAMETER CONDITIONS SYMBOL MIN TYP MAX MIN TYP MAX UNITS
Contact Ratings
Switching Voltage Max DC/PeakAC Resistive VL- - 1000(1) - - 1000(1) Volts
Switching Current Max DC/PeakAC Resistive IL- - 2 - - 2 Amps
Carry Current Max DC/PeakAC Resistive IC- - 3 - - 3 Amps
Contact Rating Max DC/PeakAC Resistive - - 50 - - 50 Watts
Life Expectancy Signal Level 1.0 V 10mA 1000 - - 1000 - - x106Ops
50V, 1A - 2 - - 2 - x106Ops
500V, 100mA - 50 - - 50 - x106Ops
Related Loads(2)
Static Contact Resistance 50mV, 10mA CR - - 100 - - 100 m
Contact Material - Hg - - Hg -
Hg Content - 40 - - 40 - mgrams
Relay Specifications
Insulation Resistance Between all isolated pins IR 1010 1012 -10
10 1012 -
at 100V, 25°C, 40% RH
Capacitance Across Open Contacts - 0.7 - - 0.7 - pF
Upper Contact to Coil - 1.2 - - 1.5 - pF
Closed Contact to Coil - 3.2 - - 2.5 - pF
Dielectric Strength Open Contacts 1400 - - 2000 - - VDC/Peak AC
Contacts to Coil I/O 1400 - - 5600 - - VDC/Peak AC
Operate Time At Nominal Coil Voltage TOP - 1.5 2.5 - 1.5 2.5 ms
10Hz Square Wave
Release Time Zener-Diode Suppression TREL - 1 2.5 - 1 2.5 ms
Environmental Ratings
Storage Temperature TA-40 - +105 -40 - +105 °C
Operating Temperature TO+260 +260 °C
Soldering Temperature Applied to pins, 5 sec. max. -38 - +85 -38 - +85 °C
Vibration Resistance(2) 10Hz - 500Hz G - - 10 - - 10 Gs
(Survival)
Shock Resistance 11±1ms, 1/2Sine Wave S - - 30 - - 30 Gs
(Survival)
Weight - 2.1 - - 2.1 - grams
(1) Current limited up to 5mA, minimum 20 million operations; for further information, consult factory
(2) Refer to life graphs
(3) Relay contains mercury welted contacts and must be mounted vertically.Pin 1 is up.
SRC DEVICES
SRC DEVICES
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USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
DIP 14 SERIES REED RELAYS
MSS2 MSS7 PRMA DSS7 PRME MVS2 MVS7
COIL SPECIFICATIONS
Contact Form Coil Voltage Coil Resistance Operate Voltage Release Voltage Nominal Input Power
Units Volts Volts Volt mW
Conditions +/- 10% (25°C) Must operate by (25°C)Must release by (25°C)
Part # Min Typ Max Min Typ Max Min Typ Max Min Typ Max Min Typ Max
MSS2 1A05 1-Form-A 5 11 126 140 154 3.75 0.5 179
MSS2 1A12 1-Form-A 12 21 450 500 550 9 1 288
MSS2 1A24 1-Form-A 24 44 1935 2150 2365 18 2 268
MSS7 1A05 1-Form-A 5 11 126 140 154 3.75 0.5 179
MSS7 1A12 1-Form-A 12 21 450 500 550 9 1 288
MSS7 1A24 1-Form-A 24 43 1935 2150 2365 18 2 268
PRMA 1A05 1-Form-A 5 21 450 500 550 3.75 0.8 50
PRMA 1A12 1-Form-A 12 30 900 1000 1100 9 1 144
PRMA 1A24 1-Form-A 24 44 1935 2150 2365 18 2 268
PRMA 1B05 1-Form-B 5 6 450 500 550 3.75 0.8 50
PRMA 1B12 1-Form-B 12 14.5 900 1000 1100 9 1 144
PRMA 1B24 1-Form-B 24 29 1935 2150 2365 18 2 268
PRMA 1C05 1-Form-C 5 12 180 200 220 3.75 0.8 125
PRMA 1C12 1-Form-C 12 18 450 500 550 9 1 288
PRMA 1C24 1-Form-C 24 32 1935 2150 2365 18 2 268
PRMA 2A05 2-Form-A 5 11 126 140 154 3.75 0.8 179
PRMA 2A12 2-Form-A 12 21 450 500 550 9 1 288
PRMA 2A24 2-Form-A 24 44 1935 2150 2365 18 2 268
PRMA 10037 1-Form-A 5 15 342 380 418 3.75 0.8 66
PRMA 10038 1-Form-A 12 19 477 530 583 9 1 272
PRMA 10039 1-Form-A 24 32 1800 2000 2200 18 2 288
DSS7 1A05 1-Form-A 5 21 450 500 550 3.75 0.8 50
DSS7 1A12 1-Form-A 12 30 900 1000 1100 9 1 144
DSS7 1A24 1-Form-A 24 44 1935 2150 2365 18 2 268
PRME 25005 1-Form-A 5 19 450 500 550 3.8 0.8 50
PRME 15005 1-Form-A 5 15 342 380 418 3.5 1 66
PRME 15002 1-Form-A 12 19 477 530 583 8 1 272
PRME 15003 1-Form-A 24 32 1800 2000 2200 16 2 288
MVS2 1A05(A,B) 1-Form-A 5 7 94.5 105 116 3.75 0.5 238
MVS2 1A12(A,B) 1-Form-A 12 15 450 500 550 9 1 288
MVS2 1A24(A,B) 1-Form-A 24 30 1935 2150 2365 18 2 268
MVS7 1A05(S) 1-Form-A 5 7 94.5 105 116 3.75 0.5 238
MVS7 1A12(S)1-Form-A 12 15 450 500 550 9 1 288
MVS7 1A24(S) 1-Form-A 24 30 1935 2150 2365 18 2 268
SRC DEVICES
6
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USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
DIP 14 SERIES REED RELAYS
MSS2 MSS7 PRMA DSS7 PRME MVS2 MVS7
PERFORMANCE GRAPHS
PRMA
Life/Contact Load Characteristics
(Confidence Level 99%)
Contact Load (mA)
Voltage (Vdc)
0
25
20
15
10
5
0100 200 300 400
Life: >10x106 Operations
PRMA
Allowable Operating Range
Operating Frequency
Duty Cycle (%)
0
100
75
50
25
0200 400 600 1000800
PRMA
Operate Time vs Nominal Voltage
Multiple of Nominal Voltage
Operate Time (µs)
0
500
400
300
200
100
00.5 1 1.5 2.52
PRMA
Contact Noise Envelope
(Bandwidth 10KHz)
Time After Coil Energization (ms)
Contact Noise (µV)
0
60
40
20
0
-20
-40
-60 123 564
547
10K
1A7A
Tektronix
MSS2/MSS7
Operate Time vs Nominal Voltage
(with Diode Suppression)
Multiple of Nominal Voltage
A = +3δ B = -3δ
Operate Time (ms)
0.9
0.6
0.3
1.2
0
2.4
2.1
1.8
3.3
3.0
2.7
1.5
0 0.3 0.90.6 2.41.2 1.5 1.8 2.1
A
B
MSS2/MSS7
Timing (with Diode Suppression)
Multiple of Nominal Voltage
A = +3δ B = -3δ
Release Time (ms)
0.9
0.6
0.3
1.2
0
2.4
2.1
1.8
3.3
3.0
2.7
1.5
0 0.3 0.90.6 2.41.2 1.5 1.8 2.1
A
B
MSS2/MSS7
Magnetic Interference
X = Distance (in.) between centers of adjacent relays.
(For distance between relay bodies, subtract .400)
% Change
10
5
0
25
20
15
-5
-10
-15
-20
00.2 0.4 0.6 0.8
MVS7/MSS7
Relay Internal Temperature Rise vs. Power
Power (W)
Temperature Rise (¡C) (Typ.)
0
50
40
30
20
10
00.2 0.4 0.6 0.8
SRC DEVICES
SRC DEVICES
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USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
DIP 14 SERIES REED RELAYS
MSS2 MSS7 PRMA DSS7 PRME MVS2 MVS7
MECHANICAL DIMENSIONS
19.60 MAX.
(0.772)
PRMA
6.90 MAX.
(0.272)
1
214
13
6
79
8
6.70 MAX.
(0.264) 7.33 MAX.
(0.289)
15.24
(0.600)
10.16
(0.400)
0.49
(0.019)
3.20 0.25
(0.125 0.009)
7.62
(0.300)
8.90 MAX.
(0.350)
0.28
(0.011)
Top View
19.60
(0.772)
PRME
5.00 MAX.
(0.197)
5.30 0.10
(0.208 0.003)
10.16
(0.400) 15.24
(0.600)
0.46
(0.018)
3.20 0.25
(0.125 0.009)
7.62
(0.300)
8.90 MAX.
(0.350)
0.28
(0.011)
6.40
(0.252)
1
214
13
6
79
8
Top View
19.60 MAX.
(0.772)
DSS7
6.90 MAX.
(0.272)
113
68
6.70 MAX.
(0.264) 7.33 MAX.
(0.289)
15.24
(0.600)
10.16
(0.400)
0.49
(0.019)
3.20 .25
(0.125 0.009)
7.62
(0.300)
8.90 MAX.
(0.350) 0.28
(0.011)
Top View
PRMA 1A
1
214
13
6
78
Top View
Options:
Diode - pin #2 is positive
Electrostatic shield - pin 9
PRMA 1B
Top View
1
214
13
6
78
+
Options:
Diode - pin #2 is positive
Electrostatic shield - pin 9
PRMA 1C
Top View
1
214
6
78
Options:
Diode - pin #2 is positive
Electrostatic shield - pin 9
PRMA 2A
Top View
Options:
Diode - pin #2 is positive
Electrostatic shield - pin 9
1
214
13
6
78
MVS2/MSS2
1
214
13
6
78
Top View
* MVS2 only must be mounted
vertically with pin #1 UP.
UP
*
PRMA 10037/10038/10039
1
214
13
6
79
8
Top View
Options:
Diode - pin #2 is positive
Electrostatic shield - pin 9
PRME
114
13
6
78
Top View
Options:
Diode - pin #13 is positive
Electrostatic shield - pin 9
DSS7
113
68
Top View
MSV must be mounted verti-
cally. Pin #1 is up.
DIMENSIONS
mm
(inches)
SRC DEVICES
8
www.srcdevices.com
USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422
DIP 14 SERIES REED RELAYS
MSS2 MSS7 PRMA DSS7 PRME MVS2 MVS7
ORDERING INFORMATION
A complete part number is represented by the digits below. For example,
the PRMA1A05 is a model 2 PRMA relay with a 1-Form A contact form, a
nominal voltage of 5V and no extra options.
XXXX XX XX X
Series
PRMA
DSS7
Contact Form
1A = 1-Form-A
15 = 1-Form-A
(PRME)
2A = 2-Form-A
1B = 1-Form-B
1C = 1-Form-C
Options
A = ES option
B = Diode option
C = Shield & diode option
S = Modified pinout (Coil at 2 & 6, contact
at 8 & 14, DSS7 only)
Nominal Coil Voltage
05 = 5V
12 = 12V
24 = 24V
Ordering Information
Special Schematics
PRME 25005
PRME 15005
PRME 15002
PRME 15003
PRMA 10037
PRMA 10038
PRMA 10039
These represent
full part numbers.
SRC DEVICES
SRC DEVICES
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USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422