DIP 14 SERIES REED RELAYS
DESCRIPTION
MSS2 ■ MSS7 ■ PRMA
■ DSS7 ■ PRME ■ MVS2 ■ MVS7
RATINGS (@ 25˚ C)
APPLICATIONS
FEATURES
APPROVALS
SRC Device’s 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 mΩ
PRMA Form C 200 mΩ
MSS2/MSS7/MVS2/MVS7 100 mΩ
(See detailed specifications for more information.)
SRC DEVICES
SRC DEVICES
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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.
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 mΩ
Dynamic Contact Resistance .5V, 50mA at 100Hz, 1.5 msec DCR - N/A - - N/A - mΩ
Contact Material - Hg - - Hg -
Hg Content - 16 - - 16 - mgrams
Relay Specifications
Insulation Resistance Between all isolated pins IR 1081010 -10
81010 -Ω
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
2
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 mΩ
Dynamic Contact Resistance .5V, 50mA at 100Hz, 1.5 msec DCR - N/A - - N/A - mΩ
Contact Material - Rh - - Ru -
Relay Specifications
Insulation Resistance Between all isolated pins IR 1091010 -10
10 1012 -Ω
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
3
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 mΩ
Dynamic Contact Resistance .5V, 50mA at 100Hz, 1.5 msec DCR - N/A - - N/A - mΩ
Contact Material - Ru - - Ru -
Relay Specifications
Insulation Resistance Between all isolated pins IR 1010 1012 -10
10 1012 -Ω
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
4
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 mΩ
Contact Material - Hg - - Hg -
Hg Content - 40 - - 40 - mgrams
Relay Specifications
Insulation Resistance Between all isolated pins IR 1010 1012 -10
10 1012 -Ω
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
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
COIL SPECIFICATIONS
Contact Form Coil Voltage Coil Resistance Operate Voltage Release Voltage Nominal Input Power
Units Volts ΩVolts 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
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
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
7
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
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
9
www.srcdevices.com
USA 1-866-SRC-8668 Europe 32-89-328850 Far East 886-2-2698-8422