DATA SHEET
UA2/UB2 SERIES
MINIATURE SIGNAL RELAY
Super-compact size, Slim-package, Surface mounting type
DESCRIPTION
NEC's UA2/UB2 relay ia a new generation Miniature Signal Relay of super-compact size and slim-pakage.
But, the latching type production is going to start after June 2000.
FEATURES
™Small mounting size of slim package for dense mounting.
™Bellcore (2500 V) and FCC (1500 V) surge capability.
™IEC950/UL1950/EN60950 spacing and high breakdown voltage.
(Basic insulation class on 200 V working voltage)
™Low power consumption 140 mW
APPLICATIONS
Electronic switching systems, PBX, terminal equipment, telephone system, instrumental equipment.
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.
Document No. ER0450EJ2V0DS00 (2nd edition)
Date Published January 2000 M
Printed in Japan
The information in this document is subject to change without notice.
©
1999
UA2/UB2 SERIES
DATA SHEET ER0450EJ2V0DS002
Tolerance of lead pitch is ±0.15 mm [0.006 inch]
Another tolerance is ±0.3 mm [0.012 inch]
( ) is reference.
∗ Value of trimmed lead type (NJ type)
10.6 [0.417]
mm [inch]
0.5 [0.020]
8.0 [0.315]
3.4 [0.134]
∗2.8 [0.110]
(1.5) (1.5)
3.2
[0.126]
2.2
[0.087]
2.2
[0.087]
5.7 [0.224]
3.2
[0.126]
8- 0.85
7.6 (mm)
3.2
3.2
2.2 2.2
φ
DIMENSIONS AND PAD LAYOUTS (Unit : mm [inch])
UA2 SERIES
UB2 SERIES
10.6 [0.417]
mm [inch]
3.2
[0.126] 2.2
[0.087] 2.2
[0.087] 3.2 [0.126]
7.4 [0.291]
∗6.0 [0.236]
(1.5) (1.5)
8.8 [0.346] max.
∗9.0 [0.354] max.
5.7 [0.224]
Tolerance of lead pitch is ±0.15 mm [0.006 inch]
Another tolerance is ±0.3 mm [0.012 inch]
( ) is reference.
∗ Value of minimum footprint type (NUN type)
7.6 (mm)
0.8
3.1
∗2.4
5.3
∗4.6
3.2 2.2 2.2
(Bottom view)
Note. General tolerance : ±0.1
(Bottom view)
Note. General tolerance : ±0.1
UA2/UB2 SERIES
3DATA SHEET ER0450EJ2V0DS00
PIN CONFIGURATIONS (bottom view)
UA2 SERIES
Index mark of
relay direction
Non-latch type
(not energized position) Single coil latch type
(reset position)
S : Coil polarity of set (operate)
R : Coil polarity of reset (release)
1234
8765
1234
876
SR
5
1234
8765
R
Index mark of
relay direction
1234
8765
S
Non-latch type
(not energized position) Single coil latch type
(reset position)
S : Coil polarity of set (operate)
R : Coil polarity of reset (release)
UB2 SERIES
MARKINGS (top view)
U A 2 – 1 2 N U
9900
JAPAN
2 3
41
5
qPart number
wManufacturer
eCountry of origin
rDate code
tIndex mark of relay direction
(pin No. 1, 12)
UA2/UB2 SERIES
DATA SHEET ER0450EJ2V0DS004
2 Form c
30 W (resistive) 37.5 VA (resistive)
220 Vdc 250 Vac
1 A
1 A
10 mV.dc, 10
µ
A *4
100 mΩ Max. (Initial)
Silver alloy with gold alloy overlay
140 to 230 mW
100 to 120 mW
Approximately 2 ms
Approximately 1 ms without diode
1000 MΩ at 500 Vdc
1000 Vac for one minute (1500 V surge, 10 × 160
µ
s ∗1)
1500 Vac for one minute (2500 V surge, 2 × 10
µ
s *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, double amplitude of 5 mm (30 G)
(Destructive failure)
–40 to +85˚C
18 degrees at nominal coil voltage (140 mW)
5 × 107 *3 operations (Non-latch type)
1 × 107 operations (Latch type)
30 Vdc 1 A (resistive), 1 × 105 operations at 20˚C
125 Vac 0.3 A (resistive), 1 × 105 operations at 20˚C
Approximately 1 grams
Nominal Operating Power
Contact Form
Maximum Switching Power
Maximum Switching Voltage
Maximum Switching Current
Maximum Carrying Current
Minimum Contact Ratings
Initial Contact Resistance
Contact Material
Non-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 (Community)
Running specifications
∗1rise time : 10
µ
s, fall time : 160
µ
s
∗2rise time : 2
µ
s, fall time : 10
µ
s
∗3This shows a number of operation where it can be running by which a fatal is not caused, and number of operation by wich
a stesdy characteristic is maintained is 1 × 107 times.
∗4This value is a reference value in the resistive load.
Minimum capacity changes depending on seitching frequency and enviroment temperature and the load.
Contact Ratings
UL Recognized CSA Certificated
(UL508)* (CSA C22.2 No14)✩
File No E73266 File No LR46266
30 Vdc, 1 A (Resistive)
110 Vdc, 0.3 A (Resistive)
125 Vac, 0.3 A (Resistive)
* Spacing : UL114, UL478
✩ Spacing : CSAstd950
SAFETY STANDARD AND RATING
UA2/UB2 SERIES
5DATA SHEET ER0450EJ2V0DS00
PART NUMBER SYSTEM
NOMINAL LINEUP
Non-latch Type
Nominal Coil
Voltage
(Vdc)
1.5
3
4.5
5
6
9
12
24
Coil
Resistance
(Ω) ±10 %
16
64.3
145
178
257
579
1028
2504
Must Operate
Voltage
(Vdc)
1.13
2.25
3.38
3.75
4.5
6.75
9.0
18.0
Must Release
Voltage
(Vdc)
0.15
0.3
0.45
0.5
0.6
0.9
1.2
2.4
at 20˚C
Nominal
operate power
(mW)
140
140
140
140
140
140
140
230
Single-Coil Latch Type
Nominal Coil
Voltage
(Vdc)
1.5
3
4.5
5
6
9
12
24
Coil
Resistance
(Ω) ±10 %
22.5
90
202.5
250
360
810
1440
4800
Must Operate
Voltage
(Vdc)
1.13
2.25
3.38
3.75
4.5
6.75
9.0
18.0
Must Release
Voltage
(Vdc)
1.13
2.25
3.38
3.75
4.5
6.75
9.0
18.0
at 20˚C
Nominal
operate power
(mW)
100
100
100
100
100
100
100
120
UB2 – 3 S N U – L
Option
NU : Standard
NJ : Trimmed lead typr of UA2
NUN : Minimum footprint type of UB2
Packing code
Nil : Tube (All of UA2, To be select for UB2)
L : Embossed carrying tape of L type (UB2 only)
R : Embossed carrying tape of R type (UB2 only)
Lach typr
Nil : Non–latch typr
S : Single coil latch typr
Nominal coil voltage
A numerical value of coil voltage (See the following lineup)
Series name
UA2 : UA2 Series
UB2 : UB2 Series
UA2/UB2 SERIES
DATA SHEET ER0450EJ2V0DS006
Coile Temperature Rise
30
20
10
0150 200100
Applied Power (mW) at 20 degreeC
Coil Temperature Rise (deg)
Coil Temperature Rise (deg)
250 5010
Energized Time (minute)
15 20
30
20
10
0
applied power 0.23 W
0.14 W
Switching capacity Maximum coil voltage
Operate Time and Release Time (Sample : UA2-5NU)
50 100 250V. AC
220V. DC
2002010 Swiching Voltage (V)
Swiching Current (A)
Maximum coil voltage
(ratio to rated voltage) (%)
1.0
2.0
0.5
0.2
0.1
DC (resistive)
AC (resistive)
–20 0 20 40 60 80 100–40 Ambient Temperature (degreeC)
150
200
100
50
0
3
4
2
1
00150100 200
Applied Power (mW)
Operate Time (ms)
Release Time (ms)
250
3
4
2
1
00 150100 200
Applied Power (mW)
(Without diode)
250
UA2/UB2 SERIES
7DATA SHEET ER0450EJ2V0DS00
5
4
3
2
1
000.51 510
Number of Operations ( × 10
6
Times)
Contact Resistance (mOhms)Contact Resistance (mOhms)
Operate Voltage (V)
Release Voltage (V) Operate Voltage (V)
Release Voltage (V)
Average
Operate Voltage
Release Voltage 200
100
50
20
10
000.51 510
Number of Operations ( × 10
6
Times)
Make Contact
Breake Contact
Nonload (mechanical) Life Test
(Load: Nonload, Drive: 5VDC 10 Hz 50% duty, at 20 degreeC, Sample: UA2-5 n=20)
5
4
3
2
1
00 0.5 1
Number of Operations ( × 10
6
Times)
Operate Voltage
Release Voltage 200
100
50
20
10
00 0.5 1
Number of Operations ( × 10
6
Times)
Make Contact
Breake Contact
Electrical Life Test
(Load: 5VDC/0.1 A Resistive, Drive: 5VDC 5 Hz 50% duty, at 85 degreeC, Sample: UA2-5NU n=10)
Maximum
Minimum
Breakdown Voltage
Sample Rate (n)
Sample Rate (n)
Sample Rate (n)
0.5 1.0
Breakdown Voltage (kV) Breakdown Voltage (kV)
10
5
01.5
Sample : UA2-5NU
(a) Between open contact (sample : n=20)
1.5 2.0
Breakdown Voltage (kV)
10
5
02.5 2.6
(c) Between coil to contact (sample : n=10)
1.5 2.0
10
5
02.5
(b) Between adjacent contact (sample : n=10)
UA2/UB2 SERIES
DATA SHEET ER0450EJ2V0DS008
Magnetic Interference
Measurment sample
ON
Layout
ON
ON
OFF
OFF
OFF
ON
ON
ON : emergized
OFF : no emergized
ON OFF OFF
ON
OFF
OFF
III
III IV
VVI
+40
+30
+20
+10
0
I II III
Drift of Operate Voltage
Drift of Operate Voltage (%)
Drift of Operate Voltage (%)
IV V VI
–10
–20
–30
–40
+40
+30
+20
+10
0
I II III
Drift of Operate Voltage
IVVVI
–10
–20
–30
–40
3 mm
2.5 mm
Mounting space
UA2/UB2 SERIES
9DATA SHEET ER0450EJ2V0DS00
Reel Top cover tape
Embossed carrying tape
APPEARANCE TAPE DIMENSION mm (inch)
2.0(0.079) 0.4
(0.016)
A
4.0(0.157)
11.5
(0.453) 1.75(0.069)
24.0(0.945)
15.5
(0.610)
1.5
(0.054)
φ
φ
2.2
(0.087)
12.0(0.47)
B
AB
UB2-∗∗NU Max.9.4 8.2
(0.370) (0.323)
UB2-∗∗NUN Max.9.5 6.7
(0.370) (0.264)
Relay orientation mark and tape carrying direction.
Orientation mark Orientation mark
Tape carrying direction
L
UB2-***-L
Carrying tape type
Part number R
UB2-****-R
Rubber stopper (Yellow) Rubber stopper (Green)
Index Mark
560.0
Outline of Package
Dimension of Package (Unit : mm) 50 pieces / Tube
Material : Polyvinyl chloride
(anti-static treated)
10.1
15.1
TUBE PACKAGE (UA2, UB2)
TAPE PACKAGE (UB2)
UA2/UB2 SERIES
DATA SHEET ER0450EJ2V0DS0010
SOLDERING TEMPERATURE CONDITION
Through–hole mounting type (UA2)
qAutomatic soldering
* Preheating : 100°C max. 1 minute max.
* Solder temperature : 250°C max.
* Solder time : 10 seconds max.
wManual soldering
* Solder temperature : 350°C max.
* Solder time : 3 seconds max.
Surface mounting type (UB2)
Time
T max.; 235
200
IRS Method
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.
175
150
Temperature (˚C)
200 sec.
80 sec.
30 sec.
UA2/UB2 SERIES
11DATA SHEET ER0450EJ2V0DS00
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. Ultrasonic cleaning is not recommended to keep contact performance reliable. Alcohol based solvents are
available as proper solvents.
4. Pressurized stress on the relay cover may affect reliable operation.
5. Minimum contact load of the relay is 10 mVdc, 10
µ
A.
This value is a reference value in the resistance load.
Minimum capacity changes depending on switching frequency and environment temperature and the load.
UA2/UB2 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.
