NEC EA2 User Manual

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DATA SHEET

MINIATURE SIGNAL RELAY

EA2 SERIES

COMPACT AND LIGHTWEIGHT

DESCRIPTION

The EA2 series has reduced package size and power consumption to other NEC Conventional relays.
Furthermore, it complies with 1500 V surge-voltage requirement of FCC part 68 by the unique structure and the
efficient magnetic circuit

FEATURES

™ Low power consumption
™ Compact and light weight
™ 2 form c contact arrangement
™ Low magnetic arrangement
™ Breakdown voltage : 1000 Vac (surge voltage 1500 V), FCC Part 68 compliant
™ Tube packaging
™ UL recognized (E73266), CAS certified (LR46266)

APPLICATIONS

Electronic switching systems, PBX, key telephone systems, automatic test equipment and other electronic equip­ment.

ATTENTION

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.

Document No. ER0001EJ6V0DS00 (6th edition)
Date Published June 1999 M
Printed in Japan

©

1989 (1996)

EA2 SERIES

OUTLINE DRAWING AND DIMENSIONS PAD LAYOUT (bottom view)

Unit : mm (inch)

14.2 max.
(0.56)

0.33 (0.013)

0.5

(0.02)

2.54

(0.10)

+

Note. tolerance 0.2 ( 0.008) unless otherwise specified

Dimensions in show basic size.

+

–

–

NJ type : Cover height-6.3 mm (0.248), Leads-2.8 mm (0.11)

(0.21)

5.4 max.

3.5

9.2 max.
(0.36)

0.25

(0.01)

7.62

(0.30)

MARKINGS

1

2

5

EA2-5

JAPAN

Standard type

9106

w Manufacturer
e Country of origin

q Part number

43

r Date code
t Index mark of relay direction

(pin No. 1, 10.)

1

y UL, CSA Marking

φ

10- 0.8(0.03)

7.62

(0.30)

2.54

(0.10)

10.16

2.54

(0.10)

(0.40)

+

Note. Tolerance 0.1 ( 0.004) unless othewise specified

+

–

–

SAFETY STANDARD AND RATING

UL Recognized

∗

(UL508)

File No E73266

30 Vdc, 1 A (Resistive)
110 Vdc, 0.3 A (Resistive)
125 Vdc, 0.5 A (Resistive)

∗

Spacing : UL114, UL478

CSA Certificated

(CSA C22.2 No 14)

File No LR46266

EA2-5NU

JAPAN

5

9106

UL recognized,
CSA certified type

PIN CONFIGURATIONS

12345

+

–

Index mark of
relay direction

10 9 8 7 6

(not energized position)

2

3

46

Non-latch type

12345

–

+

R S

–

+

10 9 8

Single coil latch type

(reset position)

76

S

123

+

+

45

–

–

10 9 8 7 6

R

Double coil latch type

(reset position)

S : Coil polarity of set (operate)
R : Coil polarity of reset (release)

2

DATA SHEET ER0001EJ6V0DS00

EA2 SERIES

PART NUMBER SYSTEM

EA2 – 3 S NU

Nil : Standard type
NU : UL recognized, CSA certified type
NJ : Trimmed leads type
NP : Silver-palladium alloy contact (with gold alloy overlay) ∗

∗

UL recognized, CAS certified type

Latch type

Nil : Non-latch type (standard type)
S : Single coil latch type
T : Double coil latch type

Nominal coil voltage

3, 4.5, 5, 6, 9, 12, 24 Volts

EA2 series

∗

PERFORMANCE CHARACTERISTICS

Contact Form

Maximum switching power

Contact rating

Maximum switching voltage
Maximum switching current
Maximum carrying current

Minimum contact ratings
Initial contact resistance
Contact material

Nominal operating Power

Non-latch type and double coil latch type

Single coil Latch type

Minimum operating Power

Non-latch type and double 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

Noload
Running specifications

Load

Weight

∗1

This value is a reference value in the resistance load.
Minimum capacity changes depending on seitching frequency and environment temperature and the load.

∗2

Rise time : 10 µs, fall time : 160 µs

∗3

This shows a number of operation where it can be running by which a fatal defect is not caused, and a number of
operation by which a steady characteristic is maintained is 1 × 107 times.

2 form c
30 W (resistive) 62.5 VA (resistive)
220 Vdc 250 Vac
1 A
2 A
10 mVdc, 10 µA

∗1

50 mΩ typ. (Initial)
Silver alloy with gold alloy overlay
140 mW (3 to 12 V)

200 mW (24 V)
100 mW (3 to 12 V)

150 mW (24 V)
79 mW (3 to 12 V)

113 mW (24 V)
56 mW (3 to 12 V)

85 mW (24 V)
Approximately 2 ms without diode

Approximately 1 ms without diode
1000 MΩ at 500 Vdc
1000 Vac (for one minute)

1500 V surge (10 × 160 µs ∗2)

735 m / s2 (75 G) (misoperating)
980 m / s2 (100 G) (destructive failure)

10 to 55 Hz at double amplitude of 3 mm (20 G)
(misoperating)
10 to 55 Hz, at double amplitude of 5 mm (30 G)
(destructive failure)

–40°C to 85°C
18 degrees at nominal coil voltage
1 × 108 operations (Non-latch type)
1 × 107 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
Approximately 1.5 grams

∗3

3DATA SHEET ER0001EJ6V0DS00

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

EA2 SERIES

at 20˚C

Must Release

Voltage

(Vdc)

0.3

0.45

0.5

0.6

0.9

1.2

2.4

Single-Coil Latch Type

Nominal Coil

Voltage

(Vdc)

3

4.5
5
6

9
12
24

Coil

Resistance

(Ω) ±10 %

90

202.5
250
360

810
1440
3840

Must Operate

Voltage

(Vdc)

2.25

3.38

3.75

4.5

6.75
9

18

Must Release

Voltage

(Vdc)

18

Double-Coil Latch Type ∗∗ (Can not be driven by revese polarity for reverse operation.)

Nominal Coil

Voltage

(Vdc)

3

4.5

5

6

9

12

24

Note ∗ Test by pulse voltage

∗∗ S : Set coil (pin No.1...

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.

+ – + –

, pin No.5...

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 2880
R 2880

) R: Reset coil (pin No.10...

Must Operate

Voltage

(Vdc)

2.25
–

3.38
–

3.75
–

4.5
–

6.75
–

9

–

18

–

, pin No.6...

Must Release

Voltage

(Vdc)

18

)

at 20˚C

2.25

3.38

3.75

4.5

6.75
9

at 20˚C

–

2.25
–

3.38
–

3.75
–

4.5
–

6.75
–

9

–

4

DATA SHEET ER0001EJ6V0DS00

TYPICAL PERFORMANCE DATA

EA2 SERIES

SWITCHING CAPACITY

2.0

1.0

0.5

0.4

0.3

Switching Current (A)

0.2

30 100 200

Switching Voltage (V)

OPERATE TIME

2

1

DC Load (resistive)
AC Load (resistive)

Operate Time

Bounce Time at Operate

0.25A

0.136A

250 Vdc
220 Vdc

COIL TEMPERATURE RISE

80

60

40

20

Coil Temperature Rise (˚C)

0

100 200 300 400

Applied Power (mW)

Release Time or

Bounce Time at Release (ms)

0 100 200 300 500400

Applied Power (mW)

RELEASE TIME WITHOUT DIODE

2

Release Time

1

Bounce Time at Release

Release Time or

Bounce Time at Release (ms)

0

100 200 300 500400

Applied Power (mW)

RUNNING SPECIFICATIONS (Noload)

Sample : EA2-5 n = 10
Load : None

5

4

Operate Voltage
Release Voltage

3

2

1

Operate Voltage or

Release Voltage (V)

01

23

Number of Operations ( × 10

RELEASE TIME WITH DIODE

Release Time

2

1

Release Time or

Bounce Time at Release (ms)

0

100 200 300 500400

Bounce Time at Release

Applied Power (mW)

Temperature : 85˚C
Drive : 5 Vdc, 10 Hz 50% duty

1000

500

Make contact
Break contact

300
200

100

50
30

20

Contact Resistance (mΩ)

10

510

6

operations) Number of Operations ( × 106 operations)

01

23 5 10

5DATA SHEET ER0001EJ6V0DS00

MAGNETIC INTERFERENCE

EA2 SERIES

50
40
30
20
10

0

–10
–20
–30
–40

Drift of Operate Voltage (%)

–50

ON

ON

Layout Layout Layout Layout

I II III IV

ON
ON
ON

I II III IV V

OFF OFF

ON

ON

OFF
OFF
OFF

Max.

Min.

VI

OFF

OFF

Sample

50
40
30
20
10

0
–10
–20
–30
–40

Drift of Release Voltage (%)

–50

Max.

Min.

I

II III IV V VI

LayoutLayout

2.54

2.54

PACKAGE

Dimensions of Relay Tube (Unit : mm) 40 pieces / Tube

Outline of Package

Layout V

(2.5)

(0.5 t)

Layout VI

Material : Polyvinyl chloride

+

13.7 0.3

–

–

+

(6.2)

12.0 0.3

(4.5)

Rubber stopper (Red) Rubber stopper (Green)

(4.6)

(auti-static treated)

586 1

Mounting Layout (mm)

+

–

( ) Reference

Index Mark

6

DATA SHEET ER0001EJ6V0DS00

EA2 SERIES

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. Pressurized stress on the relay cover is not favorable to keep reliable operation of the relay during operation.

µ

6. Minimum contact load of the relay is 10 mV, 10
This value is a reference value in the resistance load.

Minimum capacity changes depending on swiching frequency and environment temperature and the load.

A.

7DATA SHEET ER0001EJ6V0DS00

EA2 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 intellec­tual 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 anti­failure 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 equip­ment and industrial robots

Special: T ransportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster

systems, anti-crime systems, safety equipment and medical equipment (not specifically de­signed 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.