MR301 Series
22.5MAX.
(0.89)
Document No. ER0046EJAV3SG00 (WWW-MR301)
©
1998
s
DIMENSIONS
mm(inch)
16.5MAX.
(0.65)
17MAX.
(0.67)
3.5
(0.14)
0.3
(0.01)
12.2
2
2.3
(0.48) (0.08) (0.09)
Tolerance
±0.2
mm (0.008)
12
2
(0.47) (0.08)
The MR301 series, which has a low profile package and
light weight, is suited for various kinds of consumer
equipments, industrial machines and automobiles.
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RECOMMENDED PCB PAD LAYOUT and
SCHEMATICS
mm (inch)
2—
φ
1.8(0.071 DIA)
Schematic
• Low profile, light weight.
• Two types of contact
(General type: 5A switching, High power type; 10A
switching)
• Fluxtight or washable package is available.
• UL recognized (E 73266), CSA certified (LR46266)
12
(0.47)
s
FEATURES
12.2
(0.48)
2
(0.08)
3—
φ
1.6
(0.063 DIA)
(BOTTOM VIEW)
(0.46 oz)
Not energized position
Weight Approx. 13 g
s
PART NUMBER SYSTEM
s
SAFETY STANDARD AND RATING
ULRecognized (UL508)*
File No. E73266
MR301- ** HU
1/2HP 240VAC
1/4HP 125VAC
30VDC, 7 A (Resistive)
60VDC, 1.0 A (Resistive)
277VDC, 5 A (Resistive)
120VDC, 10 A (Resistive)
360 W, 120VAC Tungsten
120VAC, 2 A Ballast
TV-2, 120VAC
CSA Certificated
(CSA C22.2 No.14)
File No. LR46266
MR301- ** HU
1/2HP 240VAC
1/4HP 125VAC
30VDC, 7 A (Resistive)
60VDC, 1.0 A (Resistive)
277VDC, 5 A (Resistive)
120VDC, 10 A (Resistive)
360 W, 120VAC Tungsten
120VAC, 2 A Ballast
MR301-3HUSL
Nominal
coil voltage
3, 5, 6, 9, 12, 24 Vdc
Nil : General type (5A)
H : High power type (10A)
Nil : 0.3 mm Standoff
L : 0.8 mm Standoff
Nil : Fluxtight
S : Washtight
Nil : Standard type
U : UL recognized,
CSA certified type
MR301- ** U
1/4HP 240VAC
1/8HP 125VAC
30VDC, 5 A (Resistive)
277VDC, 2.5 A (Resistive)
120VDC, 5 A (Resistive)
130 W, 120VAC Tungsten
120VAC, 2 A Ballast
* Spacing : UL114, UL478
1
MR301 Series
s
SPECIFICATIONS
Types (Contact Rating)
Items
Contact Form
Maximum Switching Power (Resistive Load)
Maximum Switching Voltage (Resistive Load)
Maximum Switching Current (Resistive Load)
Minimum Switching Voltage and Current
Initial Contact Resistance
MR301
(5A)
Document No. ER0046EJAV3SG00 (WWW-MR301)
©
1998
at 20°C
MR301-H
(10A)
1 Form c
150 W, 600 VA
250 Vac, 30 Vdc
5A
10 A
5 Vdc, 0.1 A
5 Vdc, 1 A
8.8 mΩ typ. (measured by voltage drop at 5 Vdc, 0.5A) 8.8 mΩ typ. (measured by voltage drop at 5 Vdc, 2A)
Silver nickel alloy
Silver oxide complex alloy
Approx. 5 ms (at nominal voltage)
Approx. 2 ms (at nominal voltage) without diode
360 mW
1000 MΩ at 500 Vdc
750 Vac (for one minute)
1500Vac (for one minute)
Approx. 1 pF
Approx. 10 pF
98 m/s
2
(10G) (misoperating), 980 m/s
2
(100G) (destructive failure)
10 to 300 Hz, 43 m/s2 (4.4G)(misoperating),
10 to 500 Hz, 43 m/s2 (4.4G), 200 hours destructive failure)
–40 to +85
°C
(–40 to +185
°F)
50
°C
/ W (122
°F/W)
10
×
10
6
operations
100
×
10
3
operations
Approx. 13g(0.46 oz)
300 W, 1200 VA
Contact Ratings
Contact Material
Operate Time (Excluding bounce)
Release Time (Excluding bounce)
Nominal Operate Power
Insulation Resistance
Breakdown Voltage
Electrostatic Capacitance
Shock Resistance
Vibration Resistance
Ambient Temperature
Coil Temperature Rise
Running Specifications
Weight
Non load
Load
Between open contacts
Between contacts and coil
Between open contacts
Between contacts and coil
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COIL RATING
Nominal
Voltage
3
5
6
Vdc
9
12
24
Coil Resistance
(Ω)
±
10 %
25
70
100
225
400
1600
Must Operate Voltage*
( Vdc)
2.1
3.5
4.2
6.3
8.4
16.8
at 20°C
Must Release Voltage*
(Vdc)
0.3
0.5
0.6
0.9
1.2
2.4
* Test by pulse voltage
2
MR301 Series
Document No. ER0046EJAV3SG00 (WWW-MR301)
©
1998
The information in this document is based on documents issued in April, 1998 at the latest. The infor-
mation is subject to change without notice. For actual design-in, refer to the latest publications of data
sheet, etc., for the most up-date specifications of the device.
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 ap-
pear in this document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual prop-
erty 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 com-
ponents, 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, customer must incorporate suffi-
cient 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, Iife
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 NEC sales representative in advance.
Anti-radioactive design is not implemented in this product.
3
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