TransGuard
®
AVX Multilayer Ceramic Transient Voltage Suppressors
GENERAL DESCRIPTION
The AVX TransGuard
®
Transient Voltage Suppressors (TVS)
with unique high-energy multilayer construction represents
state-of-the-art overvoltage circuit protection. Monolithic
multilayer construction provides protection from voltage
transients caused by ESD, lightning, NEMP, inductive switch-
ing, etc. True surface mount product is provided in EIA
industry standard packages. Thru-hole components are
supplied as conformally coated axial devices.
TRANSGUARD
®
DESCRIPTION
TransGuard
®
products are zinc oxide (ZnO) based ceramic
semiconductor devices with non-linear voltage-current charac-
teristics (bi-directional) similar to back-to-back zener diodes.
They have the added advantage of greater current and energy
handling capabilities as well as EMI/RFI attenuation. Devices
are fabricated by a ceramic sintering process that yields a
structure of conductive ZnO grains surrounded by electrically
insulating barriers, creating varistor-like behavior.
AVX VG series parts (large case size, high energy) are glass
encapsulated. These parts provide the same high reliability
as traditional VC series parts. The glass encapsulation pro-
vides also enhanced resistance against harsh environment or
process such as acids, salts, chlorite flux.
The number of grain-boundary interfaces between conduct-
ing electrodes determines “Breakdown Voltage” of the
device. High voltage applications such as AC line protection
require many grains between electrodes while low voltage
requires few grains to establish the appropriate breakdown
voltage. Single layer ceramic disc processing proved to be a
viable production method for thick cross section devices
with many grains, but attempts to address low voltage
suppression needs by processing single layer ceramic disc
formulations with huge grain sites has had limited success.
AVX, the world leader in the manufacture of multilayer
ceramic capacitors, now offers the low voltage transient
protection marketplace a true multilayer, monolithic surface
mount varistor. Technology leadership in processing
thin dielectric materials and patented processes for
precise ceramic grain growth have yielded superior energy
dissipation in the smallest size. Now a varistor has voltage
characteristics determined by design and not just cell sorting
whatever falls out of the process.
Multilayer ceramic varistors are manufactured by mixing
ceramic powder in an organic binder (slurry) and casting it
into thin layers of precision thickness. Metal electrodes are
deposited onto the green ceramic layers which are then
stacked to form a laminated structure. The metal electrodes
are arranged so that their terminations alternate from one
end of the varistor to the other. The device becomes a
monolithic block during the sintering (firing) cycle providing
uniform energy dissipation in a small volume.
1
TransGuard
®
AVX Multilayer Ceramic Transient Voltage Suppressors
PART NUMBER IDENTIFICATION
Surface Mount Devices
Important: For part number identification only, not for
construction of part numbers.
The information below only defines the numerical value of part number
digits, and cannot be used to construct a desired set of electrical limits.
Please refer to the TransGuard
®
part number data for the correct electri-
cal ratings.
Axial Leaded Devices
Important: For part number identification only, not for
construction of part numbers.
The information below only defines the numerical value of part number
digits, and cannot be used to construct a desired set of electrical limits.
Please refer to the TransGuard
®
part number data for the correct electri-
cal ratings.
V C 1206 05 D 150 R P
TERMINATION FINISH:
P = Ni/Sn Alloy (Plated)
V A 1000 05 D 150 R L
LEAD FINISH:
Copper clad steel, solder coated
PACKAGING (Pcs/Reel):
STYLE
VC0402
VC0603
VC0805
VC1206
VC1210
Where:
“D”
N/A
1,000
1,000
1,000
1,000
100
150
200
250
300
390
400
=
=
=
=
=
=
=
“R”
N/A
4,000
4,000
4,000
2,000
12V
18V
22V
27V
32V
42V
42V
1.5J
0.6J
0.8J
1.0J
1.1J
3.0J
1.3J
1.7J
18
26
30
48
60
85
=
=
=
=
=
=
18.0
26.0
30.0
48.0
60.0
85.0
“T”
“W”
N/A
10,000
10,000
N/A
10,000
N/A
10,000
N/A
10,000
N/A
500
560
580
620
650
101
121
=
=
=
=
=
=
=
50V
60V
60V
67V
67V
100V
120V
1.9-2.0J
0.01J
4.0-5.0J
0.02J
6.0J
0.05J
12.0J
25.0J
PACKAGING (Pcs/Reel):
STYLE
VA1000
VA2000
“D”
1,000
1,000
=
=
=
=
12V
18V
32V
42V
“R”
3,000
2,500
580
650
101
121
=
=
=
=
“T”
7,500
5,000
60V
67V
100V
120V
CLAMPING VOLTAGE:
Where: 100
150
300
400
CLAMPING VOLTAGE:
ENERGY:
Where:
A = 0.1J
D = 0.4J
K = 2.0J
3.3 VDC
5.6 VDC
14.0 VDC
18.0 VDC
26
30
48
60
=
=
=
=
26.0
30.0
48.0
60.0
VDC
VDC
VDC
VDC
WORKING VOLTAGE:
Where: 03
05
14
18
=
=
=
=
ENERGY:
Where:
A
B
C
D
E
F
G
H
03
05
09
12
14
=
=
=
=
=
=
=
=
0.1J
0.2J
0.3J
0.4J
0.5J
0.7J
0.9J
1.2J
J
K
L
M
N
P
Q
R
=
=
=
=
=
=
=
=
S
T
U
V
W
X
Y
Z
=
=
=
=
=
=
=
=
CASE SIZE DESIGNATOR:
SIZE
LENGTH
DIAMETER
1000 4.32mm (0.170") 2.54mm (0.100")
2000 4.83mm (0.190") 3.56mm (0.140")
CASE STYLE:
A = Axial
WORKING VOLTAGE:
Where:
= 3.3 VDC
= 5.6 VDC
= 9.0 VDC
= 12.0 VDC
= 14.0 VDC
VDC
VDC
VDC
VDC
VDC
VDC
PRODUCT DESIGNATOR:
V = Varistor
MARKING:
All axial TransGuards
®
are marked with vendor identification, product
identification, voltage/energy rating code and date code (see example below):
CASE SIZE DESIGNATOR:
SIZE
0402
0603
0805
1206
1210
LENGTH
1.00±0.10mm
1.60±0.15mm
2.01±0.2mm
3.20±0.2mm
3.20±0.2mm
(0.040"±0.004")
(0.063"±0.006")
(0.079"±0.008")
(0.126"±0.008")
(0.126"±0.008")
WIDTH
0.5±0.10mm
0.8±0.15mm
1.25±0.2mm
1.60±0.2mm
2.49±0.2mm
(0.020"±0.004")
(0.032"±0.006")
(0.049"±0.008")
(0.063"±0.008")
(0.098"±0.008")
AVX
TVS
05D
825
Where: AVX = Always AVX (Vendor Identification)
TVS = Always TVS (Product Identification
- Transient Voltage Suppressor)
05D = Working VDC and Energy Rating (Joules)
Where: 05 = 5.6 VDC, D = 0.4J
725 = Three Digit Date Code
Where: 8 = Last digit of year (2008)
25 = Week of year
CASE STYLE:
C = Chip
G = Chip Glass Encapsulated
PRODUCT DESIGNATOR:
V = Varistor
MARKING:
All standard surface mount TransGuard
®
chips will
not
be marked.
Not RoHS Compliant
LEAD-FREE COMPATIBLE
COMPONENT
2
For RoHS compliant products,
please select correct termination style.
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