EF2 Series
| | | | | | | |
Features
|
The new EF2 Series miniature signal relays are designed for use in electronic switching systems, PBXs, terminal equipment, telephone equipment and instrument equipment. This series exhibits 50 mW of ultra low power consumption.
 
|
- Low power consumption (50 mW)
- Applicable for the surge voltage standard of FCC (1500 V, 10 x 160 µs) and Telcordia (2500 V, 2 x 10 µs)
- Surface mounting
- Variation of dense mounting type and/or long-joint-life type for latest SMT
- Compatible configuration and terminal allocation with dense mounting type of EE2 series
- Upgraded soldering joint reliability between the relay terminal and PCB by optimization of the terminal configuration; 20-year-joint-life under 35°C-per-day-temperature-difference specified in IPC-SM-785 for telecommunication equipment
|
Applications
Electronic switching systems, PBX, terminal equipment, telephone system, instrumental equipment.
Specifications
| Contact Form |
2 Form C |
| Contact Ratings |
Maximum switching power |
30 W (resistive) |
62.5 VA (resistive) |
| Maximum switching voltage |
220 Vdc |
250 Vac |
| Maximum switching current |
1 A |
| Maximum carrying current |
2 A |
| Minimum Contact Ratings |
10 mVdc, 10 µA *4 |
| Initial Contact Resistance |
75 mOhm typical (Initial) |
| Contact Material |
Silver alloy with gold alloy overlay |
| Nominal Operating Power |
Non-latch type |
50 to 70 mW |
| Single coil latch type |
30 to 80 mW |
| Double latch type |
50 to 80 mW |
| Operate Time (Excluding bounce) |
Approximately 3 ms |
| Release Time (Excluding bounce) |
Approximately 3 ms |
| Insulation Resistance |
1000 MOhm at 500 Vdc |
| Breakdown Voltage |
Between open contacts |
1000 Vac for one minute (1500 V surge, 10 x 160 µs *1) |
| Between adjacent contacts |
| Between coil and contact |
Non-latch type and single-coil latch type
1500 Vac for one minute (2500 V surge, 2 x 10 ms *2)
Double-coil latch type
1000 Vac for one minute (1500 V surge, 10 x 160 ms *1) |
| Shock Resistance |
735 m/s2 (75 G) (misoperating)
980 m/s2 (100G) (destructive failure) |
| Vibration Resistance |
10 to 55 Hz, double amplitude 3 mm (20 G) (misoperating)
10 to 55 Hz, double amplitude 5 mm (30 G) (destructive failure) |
| Ambient Temperature |
Non-latch type (Additional “N”): –40 to +85°C |
| Non-latch type (Standard): –40 to +70°C |
| Latch type : –40 to +70°C |
| Coil Temperature Rise |
7°C at nominal coil voltage (50 mW) |
| Running Specifications |
Nonload |
1 x 108 *3 operations (Non-latch type) |
| 1 x 107 operations (Latch type) |
| Load |
50 Vdc, 0.1 A (resistive), 1 x 106 operations at 70°C |
| 10 Vdc, 10 mA (resistive), 1 x 106 operations at 70°C |
| Weight |
Approximately 2.2 grams |
Dimensions
mm (inch)
Pad Layout
(bottom view) mm (inch)
 |
| Type |
A |
B |
| EF2-* |
3.0 (0.118) |
7.29 (0.287) |
| EF2-*NU |
3.0 (0.118) |
7.29 (0.287) |
| EF2-*NUX |
2.73 (0.107) |
7.02 (0.276) |
| EF2-*NUH |
2.0 (0.079) |
6.29 (0.248) |
| 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. |
|
|
Markings
Schematics
(bottom view)
Part Number System
 Relay series
 Nominal coil voltage
- 1.5, 3, 4.5, 5, 6, 9, 12, 24 V
 Latch type
- Blank: Non-latch type (see Note)
- S: Single coil latch type
- T: Double coil latch type
 Option
- Nil: Standard type
- NU: UL recognized, CSA certified type
- NUH: Minimum footprint (UL recognized, CSA certified)
- NUX: High solder joint reliability (UL recognized, CSA certified)
-
 Package
- Nil: Tube
L: Embossed carrying tape (L type).
L6: Embossed carrying tape (L type) with moisture barrier bag.
Note. There are two specifications in the operating voltage of the non-latch type relay.
| |
Part Number |
Must Operate Voltage |
| Additional “N” type |
EF2-*NU
-*NUX
-*NUH |
75% |
| Standard type |
EF2-* |
80% |
Nominal Lineup
Non-Latch Type (Standard) at 20°C
Non-Latch
Type |
Nominal
Coil Voltage
(Vdc) |
Coil
Resistance
(Ohm) ±10% |
Must Operate
Voltage
(Vdc) |
Must Release
Voltage
(Vdc) |
Nominal
Operate Power
(mW)
|
| EF2-1.5 |
1.5 |
45 |
1.2 |
0.15 |
50 |
| EF2-3 |
3 |
180 |
2.4 |
0.3 |
50 |
| EF2-4 |
4.5 |
405 |
3.6 |
0.45 |
50 |
| EF2-5 |
5 |
500 |
4 |
0.5 |
50 |
| EF2-6 |
6 |
720 |
4.8 |
0.6 |
50 |
| EF2-9 |
9 |
1473 |
7.2 |
0.9 |
55 |
| EF2-12 |
12 |
2400 |
9.6 |
1.2 |
60 |
| EF2-24 |
24 |
8229 |
19.2 |
2.4 |
70 |
Non-Latch Type (Additional “N”) at 20°C
Non-Latch Type
(All choices UL and CSA approved,
UL and CSA approved,
Minimum Footprint type,
High solder joint reliability type,
and High solder joint reliability
with Minimum Footprint type) |
Nominal
Coil Voltage
(Vdc) |
Coil
Resistance
(Ohm) ±10% |
Must Operate
Voltage
(Vdc) |
Must Release
Voltage
(Vdc) |
Nominal
Operate Power
(mW)
|
| EF2-1.5N* |
1.5 |
45 |
1.13 |
0.15 |
50 |
| EF2-3N* |
3 |
180 |
2.25 |
0.3 |
50 |
| EF2-4N* |
4.5 |
405 |
3.38 |
0.45 |
50 |
| EF2-5N* |
5 |
500 |
3.75 |
0.5 |
50 |
| EF2-6N* |
6 |
720 |
4.5 |
0.6 |
50 |
| EF2-9N* |
9 |
1473 |
6.75 |
0.9 |
55 |
| EF2-12N* |
12 |
2400 |
9.0 |
1.2 |
60 |
| EF2-24N* |
24 |
8229 |
18.0 |
2.4 |
70 |
Single-Coil Latch Type at 20°C
Single Coil
Latch Type |
Nominal
Coil Voltage
(Vdc) |
Coil
Resistance
(Ohm) ±10% |
Must Operate
Voltage
(Vdc) |
Must Release
Voltage
(Vdc) |
Nominal
Operate Power
(mW)
|
| EF2-1.5S |
1.5 |
75 |
1.2 |
1.2 |
30 |
| EF2-3S |
3 |
300 |
2.4 |
2.4 |
30 |
| EF2-4S |
4.5 |
675 |
3.6 |
3.6 |
30 |
| EF2-5S |
5 |
833 |
4 |
4 |
30 |
| EF2-6S |
6 |
1200 |
4.8 |
4.8 |
30 |
| EF2-9S |
9 |
2700 |
7.2 |
7.2 |
30 |
| EF2-12S |
12 |
4800 |
9.6 |
9.6 |
30 |
| EF2-24S |
24 |
7200 |
19.2 |
19.2 |
80 |
Double Coil Latch Type at 20°C
Double Coil
Latch Type |
Nominal
Coil Voltage
(Vdc) |
Coil
Resistance
(Ohm) ±10% |
Must Operate
Voltage
(Vdc) |
Must Release
Voltage
(Vdc) |
Nominal
Operate Power
(mW)
|
| EF2-1.5T |
1.5 |
S 45
R 45 |
1.2
- |
-
1.2 |
50 |
| EF2-3T |
3 |
S 180
R 180 |
2.4
- |
-
2.4 |
50 |
| EF2-4T |
4.5 |
S 405
R 405 |
3.6
- |
-
3.6 |
50 |
| EF2-5T |
5 |
S 500
R 500 |
4
- |
-
4 |
50 |
| EF2-6T |
6 |
S 720
R 720 |
4.8
- |
-
4.8 |
50 |
| EF2-9T |
9 |
S 1620
R 1620 |
7.2
- |
-
7.2 |
50 |
| EF2-12T |
12 |
S 2880
R 2880 |
9.6
- |
-
9.6 |
50 |
Recommended Coil Voltage with Ambient Temperature
Non-Latch Type (Additional "N")
Latch Type
Safety Standard and Rating
UL Recognized
(UL508)*
File No. E73266 |
CSA Certified
(CSA C22.2 No. 14)
File No. LR46266 |
30 Vdc, 1 A (Resistive)
110 Vdc, 0.3 A (Resistive)
125 Vac, 0.5 A (Resistive) |
|
TUV Certified
(EN60255/IEC60255) |
| No.9950557 |
| Nonlatch and Single-coil latch |
Creepage and clearance of coil to contact
is over than 2 mm (According EN60950) |
| Basic insulation class |
|
|
