Littelfuse ZA Varistor Series - Manual

© 2014 Littelfuse, Inc. 137
Revised: February 13, 2014
Varistor Products
ZA Varistor Series
Radial Lead Varistors > ZA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/za.html for current information.
ZA S
eries
Description
The ZA Series of transient voltage surge suppressors
are radial leaded 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 V
DC
voltage range of 5.5V to 615V.
See ZA Series Device Ratings and Specifications
Table for part number and brand information.
Features
• Lead–free, Halogen-
Free and RoHS
compliant
• Wide operating voltage
range V
M(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
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Agency Agency File Number
E135010, (+ E320116 for selected parts)
116895
42201-006
Continuous ZA Series Units
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) 4 to 460 V
DC Voltage Range (V
M(DC)
) 5.5 to 615 V
Transients:
Peak Pulse Current (I
TM
)
For 8/20µs Current Wave (See Figure 2) 50 to 6500 A
Single Pulse Energy Range (Note 1)
For 10/1000µs Current Wave (W
TM
) 0.1 to 52 J
Operating Ambient Temperature Range (T
A
) -55 to +85 ºC
Storage Temperature Range (T
STG
) -55 to +125 ºC
Temperature Coefficient (a V ) of Clamping Voltage (V
C
) at Specified Test Current <0.01 %/ºC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL–STD–202, Method 301)
2500 V
COATING Insulation Resistance 1000 MΩ
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only
rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is
not implied.
ZA Varistor Series
RoHS