IMO the EMECH specialist
New Generation
DPDT Surface Mount Signal Relay
EF2
s
Compact and Light Weight
s
2 Form C Contact Arrangement
s
Low Power Consumption (50mW)
s
Reduced Mounting Space: 15mm x 7.5mm
s
High-breakdown Voltage of Coil to
Contacts: 1500 Vac, 2500 V (2 x 10 s*)
s
UL Recognised, CSA Certified
s
Tube or Taped Packaging
Specifications
Dimensions mm(inch)
Schematics
Contact form
2 Form C
Contact material
Silver alloy with gold alloy overlay
Maximum switching power
30W 62.5 VA (resistive)
Maximum switching voltage
220Vdc 250 Vac
Contact rating
Maximum switching current
1A
Maximum carr ying current
1A
Minimum contact ratings
100 mVDC, 100 A
Initial contact resistance
50 m
typ.
Nonlatch type
50 to 70 mW
Nominal operating power
Single coil latch type
30 to 60 mW
Double coil latch type
50 to 80 mW
Operate time (excluding bounce)
Approximately 3 ms without diode
Release time (excluding bounce)
Approximately 2 ms without diode
Insulation resistance
1000 M
at 500 V dc
Between open contacts
1000 VAC for one minute (1500 V surge, 10 x 16s*
1
)
Breakdown voltage
Between adjacent contacts
1000 V surge for one minute (1500 V surge, 10 x 160s*
1
)
Between coil to contacts
1500 VAC (for one minute)
2500V surge (2 x 10 s*
2
)
Shock resistance
735 m/s
2
(75G) (misoperating)
980 m/s
2
(100G) (destructive failure)
Vibration resistance
10-55Hz, double amplitude 3 mm (20G) (misoperating)
10-55Hz, double amplitude 5 mm (30G) (destructive failure)
Ambient temperature
-40C to+ 70C
Coil temperature rise
7 degrees at nominal coil voltage (50 mW)
Nonload
1 x 10
7
operations
Running specifications
Load
50 VDC, 0.1A (resistive) 1 x 10
6
operations at 85C
10 VDC, 10 mA (resistive) 1 x 10
6
operations at 85C
Weight
Approximately 2.2 g
*
1
rise time: 10 s, fall time: 160 s *
2
rise time: 2 s, fall time: 10 s
EF2-..
EF2-..NU
EF2 Series
EF2-..NUX
EF2-..NUH
EF2-..NUN
15.0 max
(0.591)
7.5 max
(0.296)
15.0 max
(0.591)
7.5 max
(0.296)
15.0 max
(0.591)
7.5 max
(0.296)
7.5
(0.295)
7.5
(0.295)
Index
mark of
relay
direction
Non-latch type
(not energised position)
Single coil latch type
(reset position)
Double coil latch type
(reset position)
S: Coil polarity of set (operate)
R: Coil polarity of reset (release)
Note 1. General tolerance: 0.2 (0.008)
Note 2. This pair of pins at the right end
applies to double coil latch type only.
15.0 max
(0.591)
7.5 max
(0.296)
1.0
(0.039)
10.0 max
(0.394)
1.35
(0.053)
10.35 max
(0.408)
1.0
(0.039)
10.0 max
(0.394)
1.6
(0.063)
10.6 max
(0.418)
note2
note2
note2
note2
5.08
(0.200)
2-2.54
(2-0.100)
5.08
(0.200)
5.08
(0.200)
2-2.54
(2-0.100)
5.08
(0.200)
5.08
(0.200)
5.08
(0.200)
2-2.54
(2-0.100)
5.08
(0.200)
2-2.54
(2-0.100)
5.08
(0.200)
9.5
(0.374)
9.0
(0.354)
PRICE
INFORMATION
AND ORDERING
PRICE
INFORMATION
AND ORDERING
IMO the EMECH specialist
EF2
Part numbers
Part Number
Nominal
Coil Resistance
Must Operate
Must Release
Nominal
Coil Voltage VDC
10%
Voltage VDC
Voltage VDC
operate power (mW)
EF2-1.5NU
1.5
45
1.20
0.15
50
EF2-3NU
3
180
2.40
0.3
50
EF2-4.5NU
4.5
405
3.60
0.45
50
EF2-5NU
5
500
4.00
0.5
50
EF2-6NU
6
720
4.80
0.6
50
EF2-9NU
9
1473
7.20
0.9
55
EF2-12NU
12
2400
9.60
1.2
60
EF2-24NU
24
8229
19.20
2.4
70
Part Number System
Pad layout (bottom view) mm(inch)
EF2-5 S NUH
Feature
Nil
: Standard type
NU
: UL recognised CSA certified type
NUX : High solder joint reliability (20 years)
NUH Minimum footprint (7.5 x 15)
NUN : High solder joint reliability with minimum
footprint
Latch type
Nil
: Non latch type
S
: Single coil latch type
T
: Double coil latch type
Nominal coil voltage
1.5, 3, 4.5, 5, 6, 9, 12, 24 volts
EF2 series
Nonlatch type
at 20C
Single coil latch type
at 20C
Double coil latch type
at 20C
Note S: Set Coil (pin No. 1 and 12) R: Reset Coil (pin No. 6 and 7)
1.0 (0.039)
note 2
note 2
B
A
5.08
(0.200)
(0.100)
3-2.54
Part Number
Nominal
Coil Resistance
Must Operate
Must Release
Nominal
Coil Voltage VDC
10%
Voltage VDC
Voltage VDC
operate power (mW)
EF2-1.5SNU
1.5
75
1.20
0.13
30
EF2-3SNU
3
300
2.40
2.25
30
EF2-4.5SNU
4.5
675
3.60
3.38
30
EF2-5SNU
5
833
4.00
3.75
30
EF2-6SNU
6
1200
4.80
4.5
30
EF2-9SNU
9
2700
7.20
6.75
30
EF2-12SNU
12
4800
9.60
9
30
EF2-24SNU
24
9600
19.20
18
60
Part Number
Nominal
Coil Resistance
Must Operate
Must Release
Nominal
Coil Voltage VDC
10%
Voltage VDC
Voltage VDC
operate power (mW)
EF2-1.5TNU
1.5
S
45
1.20
50
R
45
1.3
EF2-3TNU
3
S
180
2.40
50
R
180
2.25
EF2-4.5TNU
4.5
S
405
3.60
50
R
405
3.38
EF2-5TNU
5
S
500
4.00
50
R
500
3.75
EF2-6TNU
6
S
720
4.80
50
R
720
4.5
EF2-9TNU
9
S
1620
7.20
50
R
1620
6.75
EF2-12TNU
12
S
2880
9.60
50
R
2880
9
EF2-24TNU
24
S
7200
19.20
80
R
7200
18
TYPE
A
EF2-..
3.0 (0.118)
EF2-..NU
3.0 (0.118)
EF2-..NUX
2.73 (0.101)
Note 1. General tolerance: 0.1 (0.004)
Note 2. This pair of pads at the right end applies to double coil latch type only
B
TYPE
7.29 (0.287)
7.29 (0.287)
EF2-..NUH
7.02 (0.276)
EF2-..NUN
A
B
2.0 (0.079
6.20 (0.248)
2.0 (0.079)
6.29 (0.248)
PRICE
INFORMATION
AND ORDERING
PRICE
INFORMATION
AND ORDERING
PDF 
ZIP