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PDF V68ZA2 Data sheet ( Hoja de datos )

Número de pieza V68ZA2
Descripción (ZA Series) Varistor Products - Low to Medum Voltage / Radial Lead
Fabricantes Littelfuse 
Logotipo Littelfuse Logotipo



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No Preview Available ! V68ZA2 Hoja de datos, Descripción, Manual

( DataSheet : www.DataSheet4U.com )
Varistor Products
Low to Medum Voltage, Radial Lead
ZA Varistor Series
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.
Features
• Wide Operating Voltage Range VM(AC)RMS . . . . . . . . . .4V to 460V
• DC Voltage Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5V to 615V
• No Derating Up to 85oC Ambient
• 5 Model Sizes Available . . . . . 5, 7, 10, 14, and 20mm
• Radial-Lead Package for Hard-Wired or Printed Circuit
Board Designs
• Available in Tape and Reel or Bulk Pack
• Standard Lead Form Options
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories. VDE certified.
AGENCY FILE NUMBERS: UL E135010, VDE 116895E.
DVE
®
2
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V68ZA2 pdf
Varistor Products
Low to Medum Voltage, Radial Lead
ZA Varistor 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.
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
2
Transient V-I Characteristics Curves
600
500
MAX CLAMPINGVOLTAGE
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. CLAMPINGVOLTAGE FOR V82ZA05 - V330ZA05
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V68ZA2 arduino
Varistor Products
Low to Medum Voltage, Radial Lead
ZA Varistor Series
Tape and Reel Specifications
5 and 7mm Devices
P2 P
DP
E
DP
DH
DH
H SEATING
1 PLANE
H0
C
b
D0
P1
P0
Crimped Leads "LT"
F
W0 W2 W1
W
t
P2 P
DP
E
DP
DH
DH
10, 14 and 20mm Devices
P2 P
DP
E
DP
DH
DH
H SEATING
1 PLANE
H0
C
b
D0
P1
P1
Crimped Leads "LT"
F
W0 W2 W1
2
W
t
P2 P
DP
E
DP
DH
DH
H1
H
b
D0
P1
P0
Straight Leads "LS"
F
W0 W2 W1
W
t
P2 P
DP
E
DP
DH
DH
H1
H
b
D0
P1
P0
Straight Leads "LS"
P2 P
DP
W0 W2 W1
Ft
W
E
DP
DH
DH
H1
Ho
b
D0
P1
P0
Under-crimped Leads "LU"
F
U
W0 W2 W1
H1
Ho
b
W
t
D0
P1
P0
Under-crimped Leads "LU"
F
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U
W0 W2 W1
W
t
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