DESCRIPTION
The EC2 series has reduced mounting space but sustained high-performance of NEC EA2 series. Furthermore,
it complies with 2500 V surge-voltage requirement of Bellcore specification.
FEATURES
™Compact and light weight
™2 form c contact arrangement
™Low power consumption
™Reduced mounting space : 15 mm × 7.5 mm
™High-breakdown voltage of coil to contacts :
1500 Vac, 2500 V (rise time : 2
µ
s, fall time : 10
µ
s)
™Capable of High-power switching :
700 Vac, 4.2 A, 4 times in case of accident
™UL recognized (E73266), CAS certified (LR46266)
APPLICATIONS
Electronic switching systems, PBX, terminal equipment, telephone systems.
DATA SHEET
COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE,
HIGH BREAKDOWN VOLTAGE
EC2 SERIES
MINIATURE SIGNAL RELAY
Document No. ER0002EJ4V0DS00 (4th edition)
Date Published June 1999 M
Printed in Japan
©
1994(1996)
For Right Use of Miniature Relays
DO NOT EXCEED MAXIMUM RATINGS.
Do not use relays under exceeding conditions such as over ambient temperature, over voltage
and over current. Incorrect use could result in abnormal heating, damage to related parts or
cause burning.
READ CAUTIONS IN THE SELECTION GUIDE.
Read the cautions described in NEC's "Miniature Relays" (ER0046EJ∗) when you choose relays
for your application.
2
EC2 SERIES
DATA SHEET ER0002EJ4V0DS00
OUTLINE DRAWING AND DIMENSIONS PAD LAYOUT (bottom view)
Unit : mm (inch)
MARKINGS
EC2-5NU
9206
JAPAN
JAPAN
1
43
6
5
2
EC2-5
9206
1
43
5
2
q Part number
w Manufacturer
e Country of origin
r Date code
t Index mark of relay direction
(pin No. 1, 12)
y UL, CSA Marking
Standard type
UL recognized,
CSA certified type
PIN CONFIGURATIONS (bottom view)
7.5 (0.30) MAX.
9.4(0.37) MAX.
3.2
(0.13)
5.08
0.25
(0.01)
0.5
(0.02)
15.0 (0.59) MAX.
5.08
2.54 2.54 2.54
(0.20)
(0.10)(0.10)(0.10)
(0.20)
Note. General tolerance : 0.2 ( 0.008)
Dimensions in show basic size.
NJ type : Leads-2.8 mm (0.11)
+
–
+
–Note. General tolerance : 0.1 ( 0.004)
+
–+
–
4 × 2.54 (0.1)
2 × 2.54(0.1)
2.54(0.1)
8- 0.8 (0.31)
5 × 2.54 (0.1)
2 × 2.54(0.1)
2.54(0.1)
2.54
(0.10)
2.54
(0.10)
10- 0.8 (0.31)
φφ
Non-latch and Single coil latch Double coil latch
Index mark of
relay direction
Non-latch type
(not energized 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)
13456
12 10 9 8 7
1345
12 10 9 8
1345
12 10 9
SRSR
8
SAFETY STANDARD AND RATING
UL Recognized
(UL508)∗
File No E73266
CSA Certificated
(CSA C22.2 No 14)
File No LR46266
30 Vdc, 2A (Resistive)
110 Vdc, 0.3A (Resistive)
125 Vdc, 0.5A (Resistive)
∗ Spacing : UL114, UL478
TUV Certificate
(EN60255 / IEC60255)
Creepage and clearance of
coil to contact is more than 2 mm.
(According EN60950)
Basic insulation class
No. R 9751153
(Nonlatch and Single-coil-latch)
3DATA SHEET ER0002EJ4V0DS00
EC2 SERIES
PART NUMBER SYSTEM
EC2 – 9 S NU
Nil : Standard type
NU : UL recognized, CSA certified type
NJ : Trimed leads type ∗
NP : Silver-palladium alloy contact (with gold alloy overlay) ∗
Latch type
Nil : Non-latch type
S : Single coil latch type
T : Double coil latch type
Nominal coil voltage
3, 4.5, 5, 6, 9, 12, 24 V
EC2 series
∗ UL recognized, CSA certified type
2 Form c
Silver alloy with gold alloy overlay
60 W, 125 VA
220 Vdc, 250 Vac
2 A
2 A
10 mVdc, 10
µ
A ∗1
50 mΩ typ. (Initial)
140 mW (3 to 12 V), 200 mW (24 V)
100 mW
140 mW
Approx. 2 ms
Approx. 1 ms without diode
1000 MΩ at 500 Vdc
1000 Vac (for one minute)
1500 V surge (10 × 160
µ
s ∗2)
1500 Vac (for one minute) Double Coil 1000 Vac (for one minute)
2500 V surge, (2 × 10
µ
s ∗3) Latch type 1500 V surge (10
×
160
µ
s ∗2)
735 m / s2 (75 G) (misoperating)
980 m / s2 (100 G) (destructive failure)
10 to 55 Hz double amplitude of 3 mm (20 G) (misoperating)
10 to 55 Hz, double amplitude of 5 mm (30 G) (Destructive failure)
–40 to 85˚C
18 degrees at nominal coil voltage (140 mW)
1 × 10
8
∗4 operations (Non-latch type) 1 × 10
7
operations (latch type)
50 Vdc, 0.1 A (resistive) 1 × 106 operations at 85˚C, 2 Hz
10 Vdc, 10 mA (resistive) 1 × 106 operations at 85˚C, 2 Hz
Approx. 1.9 g
Contact Form
Contact Material
Maximum Switching Power
Maximum Switching Voltage
Maximum Switching Current
Maximum Carrying Current
Minimum Contact Ratings
Initial Contact Resistance
Non-Latch Type
Nominal Operating Power
Single Coil Latch Type
Single Coil Latch Type
Operate Time (Excluding Bounce)
Release Time (Excluding Bounce)
Insulation Resistance
Between Open Contacts
Breakdown Voltage Between Adjacent Contacts
Between Coil and Contact
Shock Resistance
Vibration Resistance
Ambient Temperature
Coil Temperature Rise
No-load
Load
Weight
PERFORMANCE CHARACTERISTICS
Running specifications
Contact Ratings
(UL / CSA Rating)
∗1This value is reference value in the resistance load.
Minimum capacity changes depending on switching frequency and environment temperatur and the load.
∗2rise time : 10
µ
s, fall time : 160
µ
s
∗3rise time : 2
µ
s, fall time : 10
µ
s
∗4This shows a number of operation where it can be running by which a fatal defect is not caused, and a number of operation
by whicha steady characteristic is maintained is 1 × 107 times.
4
EC2 SERIES
DATA SHEET ER0002EJ4V0DS00
PRODUCT LINEUP
Non-latch Type
Nominal Coil
Voltage
(Vdc)
3
4.5
5
6
9
12
24
Coil
Resistance
(Ω) ±10 %
64.3
145
178
257
579
1028
2880
Must Operate
Voltage
(Vdc)
2.25
3.38
3.75
4.5
6.75
9
18
Must Release
Voltage
(Vdc)
0.3
0.45
0.5
0.6
0.9
1.2
2.4
Single-Coil Latch Type
at 20˚C
at 20˚C
at 20˚C
Nominal Coil
Voltage
(Vdc)
3
4.5
5
6
9
12
24
Coil
Resistance
(Ω) ±10 %
S 64.3
R 64.3
S 145
R 145
S 178
R 178
S 257
R 257
S 579
R 579
S 1028
R 1028
S 4114
R 4114
Must Operate
Voltage
(Vdc)
2.25
–
3.38
–
3.75
–
4.5
–
6.75
–
9
–
18
–
Must Release
Voltage
(Vdc)
–
2.25
–
3.38
–
3.75
–
4.5
–
6.75
–
9
–
18
Double-Coil Latch Type ∗∗ (Can not be driven by revese polarity for reverse operation.)
Note ∗Test by pulse voltage
∗∗ S : Set coil (pin No.1... , pin No.5... ) R: Reset coil (pin No.10... , pin No.6... )
The latch type relays should be initalized at appointed position before using, and should be enegized to specific
polanity by a bone polabity to avoid wrong operation.
Any special coil requirement, please contact NEC for availability.
Nominal Coil
Voltage
(Vdc)
3
4.5
5
6
9
12
24
Coil
Resistance
(Ω) ±10 %
90
202.5
250
360
810
1440
5760
Must Operate
Voltage
(Vdc)
2.25
3.38
3.75
4.5
6.75
9
18
Must Release
Voltage
(Vdc)
2.25
3.38
3.75
4.5
6.75
9
18
+ – + –
5DATA SHEET ER0002EJ4V0DS00
EC2 SERIES
TYPICAL PERFORMANCE DATA
1000
10
20
30
40
50
200 300 400
3
2
1
0 100 200 300 400 500
Applied Power (mW)
Operate Time or
Bounce Time at Operate (ms)
Release Time or
Bounce Time at Release (ms)
Release Time or
Bounce Time at Release (ms)
Applied Power (mW)
Coil Temperarure Rise (˚C)
30 100 200
2
1
0.5
0.4
0.3
0.2
Switching Voltage (V)
Switching Current (A)
Operate Time
Bounce Time Operate
2
1
0 100 200 300 400 500
Applied Power (mW)
Bounce Time at Release
Release Time
3
2
1
0 100 200 300 400 500
Applied Power (mW)
Release Time
Bounce Time at Release
0.273 A
250 V
220 V
DC Load (resistive)
AC Load (resistive)
SWITCHING CAPACITY
OPERATE TIME
RELEASE TIME WITHOUT DIODE RELEASE TIME WITH DIODE
COIL TEMPERATURE RISE
RUNNING SPECIFICATIONS (Noload)
5
4
3
2
1
0123410
Sample : EE2-5 n=10
Load : None
Operate Voltage
Release Voltage
Operate Voltage or
Release Voltage(V)
Number of Operations(
x
10
6
operations)
1000
500
300
200
100
50
30
20
10 1
023 5 10
Temperature : 85˚C
Drive : 5 Vdc, 10 Hz 5% duty
Make contact
Break contact
Contact Resistance(mΩ)
Number of Operations(
x
10
6
operations)
6
EC2 SERIES
DATA SHEET ER0002EJ4V0DS00
+40
+30
+20
+10
0
I II III IV V VI
–
10
–
20
–
30
–
40
+40
+30
+20
+10
0
I II III IV V VI
–
10
–
20
–
30
–
40
2.54
2.54
ON ON
ON
ON
ON
ON
OFF
OFF
ON OFF OFF
I II III IV
Layout V
OFF
OFF
OFF
Layout VI Mounting Layout (mm)
Layout Layout Layout Layout
Sample
Min.
Max.
Min.
Max.
LayoutLayout
Drift of Operate Voltage (%)
Drift of Release Voltage (%)
MAGNETIC INTERFERENCE
BREAKDOWN VOLTAGE
0.5 1.0
Breakdown voltage (kV)
Breakdown voltage (kV)
Breakdown voltage (kV)
Appearance
Appearance
Appearance
10
5
01.5
Sample : EC2-5
(a) Between Open Contacts (n = 10 pcs) (a) Between Adjacent Contacts (n = 10 pcs)
(a) Between Coil and Contacts (n = 25 pcs)
1.5 2.0
10
5
02.5
2.0 2.5
10
5
03.0
7DATA SHEET ER0002EJ4V0DS00
EC2 SERIES
PACKAGE
GUIDE TO APPLICATIONS
1. When connecting coils, refer to the pin configuration to prevent misoperation or malfunction.
2. The latch type relay should be initialized at the appointed position (set or reset position) when using, and should
be energized or deenergized to the specified polarity to avoid wrong operations by reversed contact state.
3. Soldering should be done at 250 ˚C within 10 sec.
4. Ultrasonic cleaning is not recommended to keep reliable contact performance. Alcohol based solvents are
available as proper solvents.
5. Minimum contact load of the relay is 10 mV, 10
µ
A.
This value is a reference value in the resistance load.
Minimum capacity changes depending on swiching frequency and environment temperature and the load.
Rubber stopper (Red) Rubber stopper (Green)
Index Mark
543 1
15.5 0.3
(2.4)
(4.8)
(0.5 t)
+
–
11.9 0.3
+
–
+
–
( ) Reference
Dimensions of Relay Tube (Unit : mm)
35 pieces / Tube
Material : Polyvinyl chloride
(auti-static treated)
Outline of Package
EC2 SERIES
No part of this document may be copied or reproduced in any form or by any means without the prior
written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which
may appear in this document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellec-
tual property rights of third parties by or arising from use of a device described herein or any other
liability arising from use of such device. No license, either express, implied or otherwise, is granted
under any patents, copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its electronic
components, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or
injury to persons or property arising from a defect in an NEC electronic component, customers must
incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-
failure features.
NEC devices are classified into the following three quality grades:
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based
on a customer designated "quality assurance program" for a specific application. The recommended
applications of a device depend on its quality grade, as indicated below. Customers must check the
quality grade of each device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment, au-
dio and visual equipment, home electronic appliances, machine tools, personal electronic equip-
ment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically de-
signed for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact an NEC sales representative in advance.
Anti-radioactive design is not implemented in this product.
