V18ZA3 Datasheet PDF - Harris
| Part Number | V18ZA3 | |
| Description | (V18ZAxx) Radial Lead Metal Oxide Varistors | |
| Manufacturers | Harris | |
| Logo |  |
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There is a preview and V18ZA3 download ( pdf file ) link at the bottom of this page. Total 12 Pages | ||
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Data Sheet
[ /Title
(ZA
Series)
/Sub-
ject
(Radial
Lead
Metal-
Oxide
Varis-
tors for
Low to
Mediu
m Volt-
age
Opera-
tion)
/Autho
r ()
/Key-
words
(Littel-
fuse,
Inc.,
Sup-
pres-
sion
Prod-
ucts,
TVS,
Tran-
sient
Sup-
pres-
sion,
Protec-
tion,
Auto-
motive,
Radial Lead Metal-Oxide Varistors for Low
to Medium Voltage Operation
The ZA Series of transient voltage surge suppressors are
radial-lead varistors (MOVs) designed for use in the
protection of low and medium-voltage circuits and systems.
Typical applications include motor control, telecom,
automotive systems, solenoid, and power supply circuits to
protect circuit board components and maintain data integrity.
These devices are available in five model sizes: 5mm, 7mm,
10mm, 14mm and 20mm, and feature a wide VDC voltage
range of 5.5V to 615V.
See ZA Series Device Ratings and Specifications table for
part number and brand information.
ZA Seriesu.comJuly 1999 File Number 2184.6
eet4Features
h• Recognized as “Protectors for Data Communications and
sFire Alarm Circuits”, UL File #E135010 to Std. 497B
ta• VDE Certified. License Number 116895E
• Wide Operating Voltage Range VM(AC)RMS . . . . 4V to 460V
a• DC Voltage Ratings . . . . . . . . . . . . . . . . . . . 5.5V to 615V
.d• No Derating Up to 85oC Ambient
w• 5 Model Sizes Available . . . . . . . . 5, 7, 10, 14, and 20mm
w• Radial-Lead Package for Hard-Wired or Printed Circuit
wBoard Designs
• Available in Tape and Reel or Bulk Pack
• Standard Lead Form Options
Packaging
14MM, 20MM
5MM, 7MM, 10MM
4-34
1-800-999-9445 or 1-847-824-1188 | Copyright © Littelfuse, Inc. 1999
|
| |
 
ZA Series
Power Dissipation Ratings
Should transients occur in rapid succession, the average
power dissipation required is simply the energy (watt-
seconds) per pulse times the number of pulses per second.
The power so developed must be within the specifications
shown on the Device Ratings and Specifications table for the
specific device. Furthermore, the operating values need to
be derated at high temperatures as shown in Figure 1.
Because varistors can only dissipate a relatively small
amount of average power they are, therefore, not suitable for
repetitive applications that involve substantial amounts of
average power dissipation.
1.
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
AMBIENT TEMPERATURE (oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
50
10
O1
T
T1
T2
TIME
O1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T1 = Virtual Front time = 1.25 • t
T2 = Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8µs = T1 = Virtual Front Time
20µs = T2 = Virtual Time to Half Value
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
600
500
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
400
300
8 TO
TA =
-6585VoNC(DTCO)
RATING
85oC
200
100
90
80
70
60
V68ZA05
V56ZA05
V47ZA05
50 V39ZA05
40
V33ZA05
V27ZA05
30
V22ZA05
V18ZA05
20 V12ZA05
V8ZA05
10
10-3
10-2
10-1
100
101
PEAK AMPERES (A)
102
103
FIGURE 3. CLAMPING VOLTAGE FOR V8ZA05 - V68ZA05
2000
1000
500
V330ZA05
V270ZA05
V240ZA05
V220ZA05
V205ZA05
V180ZA05
V150ZA05
V120ZA05
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
82
TA
T=O-5353o0CVTNO(D8C5) oRCATING
200 V1V0802ZZAA0055
100
0.0001 0.001
0.01 0.1 1 10
PEAK AMPERES (A)
100 1000
FIGURE 4. CLAMPING VOLTAGE FOR V82ZA05 - V330ZA05
4-38
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for V18ZA3 electronic component. |
| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ V18ZA3.PDF Datasheet ] | |
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