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/TOKIN's "Miniature Relays" when you
choose relays for your application.
The information in this document is subject to change without notice.
Document No. 0604EMDD03VOL02E
Date Published May 2005 P
Printed in Japan
© NEC TOKIN Corporation 2002
DATA SHEET
MINIATURE SIGNAL RELAY
EB2 SERIES
COMPACT AND LIGHT WEIGHT
SURFACE MOUNTING TYPE
DESCRIPTION
The EB2 series is a version of the EA2 series, suitable for surface mounting. This series has three variations of
high solder joint reliability type, and low profile type.
FEATURES
Compact and lightweight : 7.5 mm × 14.3 mm × 9.3 mm, 1.5 g
2 form c contact arrangement
Low power consumption
Low magnetic interference
Breakdown voltage: 1 000 VAC (surge voltage 1 500 V), FCC Part 68 conformable
UL recognized (E73266), CSA certified (LR 46266)
Lineup in non-latch, single-coil latch and double-coil latch types
Lineup in minimum footprint (9.3 × 14.3), and high solder joint reliability (20 years) types
Lineup in low profile type (hight : 6.5 mm).
APPLICATIONS
Electronic switching systems, PBX, key telephone systems.
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PART NUMBER SYSTEM
OUTLINE DRAWINGS AND DIMENSIONS PAD LAYOUTS (bottom view)
PIN CONFIGURATIONS (bottom view)
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MARKINGS (top view) SAFETY STANDARD AND RATING
UL Recognized
(UL508)*
File No E73266
CSA Certificated
(CSA C22.2 No14)
File No LR46266
30 Vdc, 1 A (Resistive)
110 Vdc, 0.3 A (Resistive)
125 Vac, 0.5 A (Resistive)
* Spacing : UL114, UL478
① Part number
② Manufacturer
③ Country of origin
④ Date code
⑤ Index mark of relay direction
(pin No.1, 10)
⑥ UL, CSA Marking
PERFORMANCE CHARACTERISTICS
Contact Form 2 form c
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
Contact rating
Minimum carrying ratings 10 mV.dc, 10mA ＊1
Initial contact resistance 75 mΩ max. (Initial)
Contact material Silver alloy with gold overlay
Non-latch type and double coil latch
type
140 mW (3 to 12 V)
200 mW (24 V)
Nominal operating Power
Single coil Latch type 100 mW (3 to 12 V)
150 mW (24 V)
Non-latch type and double coil latch
type
79 mW (3 to 12 V)
113 mW (24 V)
Minimum operating Power
Single coil latch type 56 mW (3 to 12 V)
85 mW (24 V)
Operate time (excluding bounce) Approximately 2 ms without diode
Release time (excluding bounce) Approximately 1 ms without diode
Insulation resistance 1000 MΩ at 500 Vdc
Between open contacts 1000 Vac (for one minute)
Between adjacent contacts 1500 V surge (10 × 160 µs ＊2)
Breakdown voltage
Between coil and contact 1000 Vac (for one minute)
1500 V surge (10 × 160 µs ＊2)
Shock resistance 735 m / s2 (misoperating)
980 m / s2 (destructive failure)
Vibration resistance
10 to 55 Hz at double amplitude of 3 mm
(misoperating)
10 to 55 Hz, at double amplitude of 5 mm
(destructive failure)
Ambient temperature ‐40°C to 85°C
Coil temperature rise 18 degrees at nominal coil voltage
1 × 108 operations (Non-latch type) ＊3
Noload 1 × 107 operations (latch type)
50 Vdc 0.1 A (resistive), 1 × 106 operations at 85°C, 2 Hz
Running specifications
Load 10 Vdc 10 mA (resistive), 1 × 106 operations at 85°C, 2 Hz
Weight Approximately 1.5 grams
＊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, decay time to half crest : 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 operations.
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Recommended relay drive conditions
Drive under conditions. If it is impossible, please inquire to NEC/TOKIN.
Nonlatch type Voltage: within ±5% at nominal voltage
Single coil latch type
Double coil latch type
Square pulse (rise and fall time is rapidly)
Pulse height : within ±5% at nominal voltage
Pulse width : More than 10 ms
Ambient temperature
‐40 to +85°C
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PRODUCT LINEUP
Non-latch Type at 20°C
Nominal Coil
Voltage
(Vdc)
Coil
Resistance
(Ω) ±10 %
Must Operate
Voltage
(Vdc)
Must Release
Voltage
(Vdc)
3 64.3 2.25 0.3
4.5 145 3.38 0.45
5 178 3.75 0.5
6 257 4.5 0.6
9 579 6.75 0.9
12 1028 9 1.2
24 2880 18 2.4
Single-Coil Latch Type at 20°C
Nominal Coil
Voltage
(Vdc)
Coil
Resistance
(Ω) ±10 %
Must Operate
Voltage
(Vdc)
Must Release
Voltage
(Vdc)
3 90 2.25 2.25
4.5 202.5 3.38 3.38
5 250 3.75 3.75
6 360 4.5 4.5
9 810 6.75 6.75
12 1440 9 9
24 3840 18 18
Double-Coil Latch Type ＊＊ (Can not be driven by revese po;arity for reverse operation.) at 20°C
Nominal Coil
Voltage
(Vdc)
Coil
Resistance
(Ω) ±10 %
Must Operate
Voltage
(Vdc)
Must Release
Voltage
(Vdc)
S 64.3 2.25 ‐
3 R 64.3 ‐ 2.25
S 145 3.38 ‐
4.5 R 145 ‐ 3.38
S 178 3.75 ‐
5 R 178 ‐ 3.75
S 257 4.5 ‐
6 R 257 ‐ 4.5
S 579 6.75 ‐
9 R 579 ‐ 6.75
S 1028 9 ‐
12 R 1028 ‐ 9
S 2880 18 ‐
24 R 2880 ‐ 18
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/TOKIN for availability.
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TYPICAL PERFORMANCE DATA
■COIL TEMPERATURE RISE
Temperature is measured by coil resistance.
■SWITCHING CAPACITY ■MAXIMUM COIL VOLTAGE
This is allowed maximum value.
Inquiry for NEC/TOKIN under maximum value at
continuous use.
This is maximum value of permissible alteration.
Inquiry for NEC/TOKIN at continuous use.
■APPLIED VOLTAGE VS. TIMING (Sample: EB2-5NU)
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■OPERATE AND RELEASE VOLTAGE VS. AMBIENT TEMPERATURE
This shows a typical change of operate (release) voltage. Maximum value of operate estimated, so it must be
applied more than this value for safety operation. In case of “hot start operation”, please inquiry for NEC/TOKIN.
■RUNNING TEST (Nonload)
(Load: None, Driving: 5V.DC, 50 Hz, 50% duty, Ambient temperature: Room temperature, Sample: EB2-5NU 20 pieces)
■RUNNING TEST (Load)
(Load: 50 V.DC 0.1 A resistive, Driving: 5V.DC, 5 Hz, 50% duty, Ambient temperature: 85 degree C, Sample: EB2-5NU
10 pieces)
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■BREAKDOWN VOLTAGE
Sample: EB2-5NU 10 pieces
■ALTERNATION OF VOLTAGE AT DENSELY MOUNTING (Magnet interference)
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SOLDERING CONDITION
Note:
1. Temperature profile shows printed circuit board surface temperature on the relay terminal portion.
2. Check the actual soldering condition to use other method except above mentioned temperature profiles.
TUBE PACKAGE
Dimension of Package (Unit : mm)
Outline of Package
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TAPE PACKAGE
Appearance Tape Dimensions Unit : mm (inch)
Relay orientation mark and tape carrying direction.
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Notes on Correct Use
1. Notes on contact load
Make sure that the contact load is within the specified range;
otherwise, the lifetime of the contacts will be shortened considerably.
Note that the running performance shown is an example, and that it
varies depending on parameters such as the type of load, switching
frequency, driver circuit, and ambient temperature under the actual
operating conditions. Evaluate the performance by using the actual
circuit before using the relay.
2. Driving relays
- If the internal connection diagram of a relay shows + and - symbols
on the coil, apply the rated voltage to the relay in the specified
direction. If a rippled DC current source is used, abnormalities such
as beat at the coil may occur.
- The maximum voltage that can be applied to the coil of the relay
varies depending on the ambient temperature. Generally, the higher
the voltage applied to the coil, the shorter the operating time. Note,
however, that a high voltage also increases the bounce of the
contacts and the contact opening and closing frequency, which may
shorten the lifetime of the contacts.
- If the driving voltage waveform of the relay coil rises and falls
gradually, the inherent performance of the relay may not be fully
realized. Make sure that the voltage waveform instantaneously rises
and falls as a pulse.
- For a latching relay, apply a voltage to the coil according to the
polarity specified in the internal connection diagram of the relay.
- If a current is applied to the coil over a long period of time, the coil
temperature rises, promoting generation of organic gas inside the
relay, which may result in faulty contacts. In this case, use of a
latching relay is recommended.
- The operating time and release time indicate the time required for
each contact to close after the voltage has been applied to or
removed from the coil. However, because the relay has a
mechanical structure, a bounce state exists at the end of the
operating and release times. Furthermore, because additional time
is required until the contact stabilizes after being in a high-resistance
state, care must be taken when using the relay at high speeds.
- Pins 5 and 6 of the non-latching and single-coil latching types of the
EB2 relay are not used. However, do not connect an external circuit
to these pins.
3. Operating environment
- Make sure that the relay mounted in the application set is used
within the specified temperature range. Use of a relay at a
temperature outside this range may adversely affect insulation or
contact performance.
- If the relay is used for a long period of time in highly humid (RH
85% or higher) environment, moisture may be absorbed into the
relay. This moisture may react with the NOx and SOx generated by
glow discharges that occur when the contacts are opened or closed,
producing nitric or sulfuric acid. If this happens, the acid produced
may corrode the metallic parts of the relay, causing operational
malfunction.
- Because the operating temperature range varies depending on the
humidity, use the relay in the temperature range illustrated in the
figure below. Prevent the relay from being frozen and avoid the
generation of condensation.
- The relay maintains constant sealability under normal atmospheric
pressure (810 to 1,200 hpa). Its sealability may be degraded or the
relay may be deformed and malfunction if it is used under barometric
conditions exceeding the specified range.
- The same applies when the relay is stored or transported.
Keep the upper-limit value of the temperature to which the relay is
exposed after it is removed from the carton box to within 50°C.
- If excessive vibration or shock is applied to the relay, it may
malfunction and the contacts remain closed. Vibration or shock
applied to the relay during operation may cause considerable
damage to or wearing of the contacts. Note that operation of a snap
switch mounted close to the relay or shock due to the operation of
magnetic solenoid may also cause malfunctioning.
4. Notes on mounting relays
- When mounting a relay onto a PC board using an automatic chip
mounter, if excessive force is applied to the cover of the relay when
the relay is chucked or inserted, the cover may be damaged or the
characteristics of the relay degraded. Keep the force applied to the
relay to within 1 kg.
- Avoid bending the pins to temporarily secure the relay to the PC
board. Bending the pins may degrade sealability or adversely affect
the internal mechanism.
- It is recommended to solder the relay onto a PC board under the
following conditions:
<1> Reflow soldering
Refer to the recommended soldering temperature profile.
<2> Flow soldering
Solder temperature: 260°C max., Time: 5 seconds max.
Preheating: 100°C max./1 minute max.
<3> Manual soldering
Solder temperature: 350°C, Time: 2 to 3 seconds
- Ventilation immediately after soldering is recommended.
Avoid immersing the relay in cleaning solvent immediately after
soldering due to the danger of thermal shock being applied to the
relay.
- Use an alcohol-based or water-based cleaning solvent. Never use
thinner and benzene because they may damage the relay housing.
- Do not use ultrasonic cleaning because the vibration energy
generated by the ultrasonic waves may cause the contacts to
remain closed.
5. Handling
- Relays are packaged in magazine cases for shipment. If a space is
created in the case after some relays have been removed, be sure
to insert a stopper to secure the remaining relays in the case. If
relays are not well secured, vibration during transportation may
cause malfunctioning of the contacts.
- Exercise care in handling the relay so as to avoid dropping it or
allowing it to fall. Do not use a relay that has been dropped.
If a relay drops from a workbench to the floor, a shock of 9,800 m/s2
(1,000 G) or more is applied to the relay, possibly damaging its
functions. Even if a light shock has been applied to the relay,
thoroughly evaluate its operation before using it.
- Latching relays are factory-set to the reset state for shipment.
A latching relay may be set, however, by vibration or shock applied
while being transported. Be sure to forcibly reset the relay before
using it in the application set. Also note that the relay may be set by
unexpected vibration or shock when it is used in a portable set.
- The sealability of a surface-mount relay may be lost if the relay
absorbs moisture and is then heated during soldering. When storing
relays, therefore, observe the following points:
<1> Please use relays within 12 months after delivery. (Storage
conditions : 30 degrees C / 60% RH)
<2> For MBB packing, Please use relays within 2 years after
delivery.
(Stronge conditions : 30 degrees C / 60% RH)
After opening MBB packing, Please use within 3 months.
(Storage conditions : 30 degrees C/ 60% RH)
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No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC/TOKIN Corporation. NEC/TOKIN Corporation assumes no responsibility for any errors which
may appear in this document.
NEC/TOKIN 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/TOKIN Corporation or others. While NEC/TOKIN
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/TOKIN electronic component, customers must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features. NEC/TOKIN 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,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment 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 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/TOKIN devices is "Standard" unless otherwise specified in NEC/TOKIN's Data Sheets
or Data Books. If customers intend to use NEC/TOKIN devices for applications other than those specified for
Standard quality grade, they should contact an NEC/TOKIN sales representative in advance.
(Note)
(1) "NEC/TOKIN" as used in this statement means NEC/TOKIN Corporation and also includes its
majorityowned subsidiaries.
(2) "NEC/TOKIN electronic component products" means any electronic component product developed or
manufactured by or for NEC/TOKIN (as defined above).
DE0202
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