167
REED SWITCH
ORD311
Super Ultra Miniature Long Life
J2R0012-38-22
nGENERAL DESCRIPTION
nFEATURES
n
n
EXTERNAL DIMENSIONS (Unit: mm)
APPLICATIONS
l Automotive electronic devices
l Control equipment
l Communication equipment
l Measurement equipment
l Household appliances
The ORD311 is a small single-contact reed switch designed for general control of medium
level loads less than 100 V. The contacts are sealed within the glass tube with inert gas to maintain
contact reliability.
(1) Reed switches are hermetically sealed within a glass tube with inert gas and do not receive
any influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises the operating parts and electrical circuits arranged coaxially. Reed
switches are suited to applications in radio frequency operation.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become
proximity switches.
35.8±0.3
MAX 7.0
f0.33 MAX f1.8
168
mW
n
(1)Drop-outValuevs.Pull-inValue (2)Contactresistance
Cumulative frequency percent (%)
Contact resistance
(Measurement length: 22mm)
Drop-out Value
Pull-in Value
Parameter
Pull-in Value (PI)
Drop-out Value (DO)
Contact resistance (CR)
Breakdown voltage
Insulation resistance
Electrostatic capacitance
Contact rating
Maximum switching voltage
Maximum switching current
Maximum carry current
Rated value Unit
lORD311
100 120 140 160 180
99.9
99
95
90
80
70
60
50
40
30
20
10
5
1
0.1
AT
50
40
30
20
10
010 20 30 40 50 60
AT
AT
AT
mW
V
W
pF
VA
V
A
A
100（ ）
DC
AC
250min VDC
10〜30
5min
200max
109min
0.4max
10
1.0
0.5
ELECTRICAL CHARACTERISTICS
169
W
l
(3) Breakdown voltage (4) Insulation resistance
(5) Electrostatic capacitance
Cumulative frequency percent (%)
Insulation resistance
Breakdown voltage
Pull-in Value
Electrostatic capacitance
Pull-in Value
ORD311
（DC 100V）
（1MHz）
99.9
99
95
90
80
70
60
50
40
30
20
10
5
1
0.1
10
10
10
11
10
12
10
13
10
14
10 20 30 40 50 AT
400
300
200
100
0
DC：V
10 20 30 40 50 60
AT
0.4
0.3
0.2
0.1
0
pF
170







Parameter
Operate time
Bounce time
Release time
Resonant frequency
Maximum operating frequency
Rated value Unit
ms
ms
ms
Hz
Hz
(1) Operate time (2) Bounce time
(3) Release time (4) Resonant frequency
10 20 30 40 50 AT
15
10
5
0
(25Hz: 100AT energized)
Release time
Drop-out Value
ms
0.5
0.4
0.3
0.2
0.1
010 20 30 40 50 AT
Operate time
Pull-in Value
(25Hz: 100AT energized)
99.9
99
95
90
80
70
60
50
40
30
20
10
5
1
Cumulative frequency percent (%)
0.1
Resonant frequency
99.9
99
95
90
80
70
60
50
40
30
20
10
5
1
0.1
Bounce time
(25Hz: 100AT energized)
11000 12000 13000 14000 Hz
lORD311
0.1 0.2 0.3 0.4 ms
0
0.3max
0.3max
0.05max
13000±2000
500
ms
Cumulative frequency percent (%)
nOPERATING CHARACTERISTICS
171
nMECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load) (2) Lead tensile strength
n
(1) Temperature characteristics
PI
CR
DO
（2.27kg-10sec）
40
30
20
10
0
−10
−20
−30
Rate of change percent
Temperature
l
ORD311
−40 −20 0 20 40 60 80 100 120
℃
99.9
99
95
90
80
70
60
50
40
30
20
10
5
1
0.1
Cumulative frequency percent (%)
Breaking load
02468
10kg
AT
60
50
40
30
20
10
0
80
60
40
Pull-in Value • Drop-out ValueContact resistance
Before test After test
CR
DO
PI
％
ENVIRONMENTAL CHARACTERISTICS
172

(2) Temperature cycle (3) Temperature and humidity cycle
(4) High temperature storage test (5) Low temperature storage test
(-55℃〜+125 ℃)
-
10℃〜
+
65℃
80％〜98％
PI
CR
DO
PI
CR
DO
PI
CR
DO
PI
CR
DO
lORD311
AT
60
50
40
30
20
10
0
100
80
60
mW
Pull-in Value • Drop-out ValueContact resistance
Before test After test
AT
60
50
40
30
20
10
0
100
80
60
mW
Pull-in Value • Drop-out ValueContact resistance
Before test After test
AT
60
50
40
30
20
10
0
100
80
60
Pull-in Value • Drop-out ValueContact resistance
Before test After test
AT
60
50
40
30
20
10
0
100
80
60
m
W
m
W
Pull-in Value • Drop-out ValueContact resistance
Before test After test
(+125℃-500H) (-40℃-500H)
173
(6) Shock test
2) Misoperation area
(7) Vibration test
1500
1000
500
G
AT
Acceleration
Pull-in Value
Misoperation
area
PI
CR
DO
PI
CR
DO
l
ORD311
1002030405060
AT
60
50
40
30
20
10
0
100
80
60
mW
Pull-in Value • Drop-out ValueContact resistance
Before test After test
AT
60
50
40
30
20
10
0
100
80
60
mW
Pull-in Value • Drop-out ValueContact resistance
Before test After test
(20G: 10〜1000Hz)
(30G: 11ms)
1) Electrical characteristics
(open→close)
174





nLIFE EXPECTANCY DATA: ORD311
lORD311
Cumulative failure rate
* Arrow indicates number of operations where test was completed.
Number of operations
Cumulative failure rate
* Arrow indicates number of operations where test was completed.
Number of operations
* Arrow indicates number of operations where test was completed.
Number of operations
Cumulative failure rate 200mA 100mA
Load conditions
Voltage: 5VDC
Current: 100mA 10mA , 20mA
Load: Resistive load
Load conditions
Voltage: 12 VDC
Current: 5mA, 10mA, 100mA
Load: Resistive load
Load conditions
Voltage: 24 VDC
Current: 1mA, 10mA, 100mA
Load: Resistive load
10mA 1mA100mA
100mA 10mA 5mA
No failure
No failure
10mA20mA 100mA
No failure
0235710
6
23 5710
7
23 5710
8
23 5710
9
0235710
6
23 5710
7
23 5710
8
23 5710
9
5
10
1
99.9
90
70
50
30
0.1
（%）
0235710
5
23 5710
6
23 5710
7
23 5710
8
5
10
1
99.9
90
70
50
30
0.1
（%）
5
10
1
99.9
90
70
50
30
0.1
（%）