MG
Series
Metal Oxide
Varistor
Surface Mount
General Purpose
125 C
Maximum
Temperature
Actual
Size
The MG series metal oxide varistors are the standard general purpose surface mount varistors from
UCC/NCC. These varistors have a wide operating temperature range and are ideal for use in low
energy circuit boards where all of the components are surface mounted. The MG series miniature
multilayer ceramic design makes them ideal surge protectors for other components where circuit
board space is limited.
Refer to the Mini -Glossary at the end of the metal oxide varistors section for additional technical
information and specifications.
Summary of Specifications
Surface mount terminals.
Operating temperature range: 40 C to 125 C.
Maximum voltage range: 6 to 20VAC or 8.5 to 26VDC.
Standard varistor voltage tolerance: 10%
Maximum energy: 1 to 2 J depending on case size.
Maximum surge current: 80 to 315A.
Nominal case size (L W H): 3.2 1.6 1.0mm and 3.2
METAL OXIDE VARISTOR
MG
2.5 1.0mm.
160
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
MG Series
MG Specifications
Item
Operating Temperature Range
Storage Temperature Range
Maximum Voltage Range
Varistor Voltage
Varistor Voltage Tolerance
Maximum Energy
Maximum Surge Current
Nominal Case Size (L W H)
40 to 125 C
50 to 150 C
6 to 20VAC or 8.5 to 26VDC
12 to 33V at 1mA DC
10%
1 to 2 Joules at 2ms
80 to 315A at 8 /20 s
3.2 1.6 1.0mm and 3.2
2.5 1.0mm
Characteristics
Construction and Diagram of Dimensions
Metal Oxide Varistor/Surface Mount Terminals
Unit: mm and inches
L
Ceramic Dielectric
Termination (Ag)
W
t
Internal Electrode
H
t
Case Dimensions (mm)
UCC
Case Code
30
40
EIA
Case Code
1206
1210
L
0.2
3.2
3.2
W
0.2
1.6
2.5
H
0.2
1.0
1.0
t
0.3
0.6
0.6
Case Dimensions (inches)
UCC
Case Code
30
40
EIA
Case Code
1206
1210
L
0.008
0.126
0.126
W
0.008
0.063
0.098
H
0.008
0.039
0.039
t
0.012
0.024
0.024
Part Numbering System for MG Series
TNR
30
MG
A
12
When ordering, always specify complete catalog number for MG Series.
Nominal Varistor Voltage: Expressed in volts. ( e.g. 12 = 12VDC ).
Surge Current Capability: A = High; B = Low.
Series Name: Indicates Basic Varistor Style.
UCC Case Code: 30 and 40 (EIA Case Code 1206 and 1210).
TNR: Alpha Prefix for Varistors.
METAL OXIDE VARISTOR
MG
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
161
MG Series
Varistor Standard Ratings - Surface Mount
Case
Code
Catalog
Part
Number
Maximum
Applied Voltage
(Continuous)
VAC
rms
VDC
6.0
7.8
9.1
10.6
12.0
14.0
17.0
20.0
6.0
7.8
9.1
10.6
12.0
14.0
17.0
20.0
6.0
7.8
9.1
10.6
12.0
14.0
17.0
20.0
6.0
7.8
9.1
10.6
12.0
14.0
17.0
20.0
8.5
11.0
12.8
15.0
16.5
18.0
22.0
26.0
8.5
11.0
12.8
15.0
16.5
18.0
22.0
26.0
8.5
11.0
12.8
15.0
16.5
18.0
22.0
26.0
8.5
11.0
12.8
15.0
16.5
18.0
22.0
26.0
Maximum
Peak Current
(8/20µsec.)
(A)
160
160
160
160
160
160
160
160
80
80
80
80
80
80
80
80
315
315
315
315
315
315
315
315
160
160
160
160
160
160
160
160
Maximum
Energy
(2msec.)
(J )
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Maximum
Clamping
Voltage
(A)
(V)
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
5
5
5
5
5
5
5
5
2
2
2
2
2
2
2
2
22
28
32
35
40
42
50
60
22
28
32
35
40
42
50
60
22
28
32
35
40
42
50
60
22
28
32
35
40
42
50
60
Capacitance
(typical)
at 1kHz
( pF )
1,811
1,449
1,208
1,087
988
906
805
659
776
621
518
466
423
388
345
282
3,623
2,898
2,415
2,174
1,976
1,811
1,610
1,317
1,553
1,242
1,035
932
847
776
690
565
Varistor
Voltage at
1mA DC
( V 10%)
12
15
18
20
22
24
27
33
12
15
18
20
22
24
27
33
12
15
18
20
22
24
27
33
12
15
18
20
22
24
27
33
30
(1206)
TNR30MGA12
TNR30MGA15
TNR30MGA18
TNR30MGA20
TNR30MGA22
TNR30MGA24
TNR30MGA27
TNR30MGA33
TNR30MGB12
TNR30MGB15
TNR30MGB18
TNR30MGB20
TNR30MGB22
TNR30MGB24
TNR30MGB27
TNR30MGB33
TNR40MGA12
TNR40MGA15
TNR40MGA18
TNR40MGA20
TNR40MGA22
TNR40MGA24
TNR40MGA27
TNR40MGA33
TNR40MGB12
TNR40MGB15
TNR40MGB18
TNR40MGB20
TNR40MGB22
TNR40MGB24
TNR40MGB27
TNR40MGB33
40
(1210)
Soldering Specifications
Recommended Soldering Land Design
Unit: mm and inches
Solder Resist
c
Recommended Soldering Temperature Profile
Reflow Method
MG
Pre-Heat
300
Land
Soldering
220~240 C
Gradual Cooling
at Room Temp.
Temperature ( C)
250
200
150
100
50
0
a
d
b
Soldering Land Dimensions (mm)
METAL OXIDE VARISTOR
UCC
Case Code
30
40
EIA
Case Code
1206
1210
a
1.8 - 2.5
1.8 - 2.5
b
4.2 - 5.8
4.2 - 5.8
c
1.2 - 1.6
1.8 - 2.5
d
0.4 - 0.8
0.5 - 1.0
1~3 min.
5~10 sec.
over 2 min.
Soldering Land Dimensions (inches)
UCC
Case Code
30
40
EIA
Case Code
1206
1210
a
.071- .098
.071- .098
b
.165 - .228
.165 - .228
c
.047- .063
.071- .098
d
.016 - .031
.020 - .039
Soldering Guidelines
1.
The MG series varistors are designed for reflow
soldering only. Do not use flow soldering.
2.
Use Sn /Pb /Ag (62 /36/2) or equivalent solder.
3.
Use inactive rosin flux (Cl content 0.2% max.).
4.
Follow the recommended soldering conditions to
avoid varistor damage.
MG
162
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
MG Series
Varistor Volt - Ampere Characteristics
V- I Curve
-30A Case Code
TNR30MGA12~TNR30MGA33
Max. Leakage Current
Voltage (V)
200
150
100
70
60
50
40
30
20
15
10
7
6
5
4
3
2
1.5
10
6
V- I Curve
- 40A Case Code
at +20°C
Max. Clamping Voltage
Voltage (V)
200
150
100
70
60
50
40
30
20
15
10
7
6
5
4
3
2
1.5
40MGA33
40MGA27
40MGA24
40MGA22
40MGA20
40MGA18
40MGA15
40MGA12
TNR40MGA12~TNR40MGA33
Max. Leakage Current
Max. Clamping Voltage
at +20°C
30MGA33
30MGA27
30MGA24
30MGA22
30MGA20
30MGA18
30MGA15
30MGA12
10
5
10
4
10
3
10
2
10
1
10
0
10
1
10
2
160A Max.
10
3
10
6
10
5
10
4
10
3
10
2
10
1
10
0
10
1
10
2
315A Max.
10
3
Direct Current (A)
8/20
µsec.
Impulse Current (A)
Direct Current (A)
8/20
µsec.
Impulse Current (A)
V- I Curve
-30B Case Code
TNR30MGB12~TNR30MGB33
Max. Leakage Current
Voltage (V)
200
150
100
70
60
50
40
30
20
15
10
7
6
5
4
3
2
1.5
10
6
V- I Curve
- 40B Case Code
at +20°C
Max. Clamping Voltage
Voltage (V)
200
150
100
70
60
50
40
30
20
15
10
7
6
5
4
3
2
1.5
40MGB33
40MGB27
40MGB24
40MGB22
40MGB20
40MGB18
40MGB15
40MGB12
TNR40MGB12~TNR40MGB33
Max. Leakage Current
Max. Clamping Voltage
at +20°C
30MGB33
30MGB27
30MGB24
30MGB22
30MGB20
30MGB18
30MGB15
30MGB12
10
5
10
4
10
3
10
2
10
1
10
0
10
1
10
2
10
3
10
6
10
5
10
4
10
3
10
2
10
1
10
0
10
1
10
2
160A Max.
10
3
Direct Current (A)
8/20
µsec.
Impulse Current (A)
Direct Current (A)
8/20
µsec.
Impulse Current (A)
80A Max.
METAL OXIDE VARISTOR
MG
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
163
