V8RA8 Datasheet, PDF (1/8 Pages) Littelfuse – Varistor Products - Low Profile

Varistor Products
Low Profile / Application Specific Varistors > RA Series
RoHS _{RA Varistor Series}
Agency Approvals
Agency
E320116
LR91788
Agency File Number
Description
The RA Series transient surge suppressors are varistors
(MOVs) supplied in a low-profile box that features a precise
seating plane to increase mechanical stability for secure
circuit-board mounting. This feature makes these devices
suitable for industrial applications critical to vibration. Their
construction permits operation up to 125ºC (ambient)
without derating.
The RA Series are available in voltage ratings up to 275V
V , _M(AC)RMS and energy levels up to 140J. These varistors are
used in automotive, motor-control, telecommunication, and
military applications.
See RA Series Device Ratings and Specifications Table for
part number and brand information.
Features
• Lead–free/RoHS
compliant parts
available (add
suffix "x2749")
• Low profile outline with
precise seating plane
• No derating up to
125ºC ambient
• In-line leads
• Wide operating
voltage range:
V_M(AC)RMS: 4 – 275V
VM(DC):
5.5 – 369V
• High energy absorption
capability W _TM
up to 140J
• 3 model sizes available
A8, RA16, and RA22
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous
Steady State Applied Voltage:
Transients:
AC Voltage Range (V_M(AC)RMS)
DC Voltage Range (V_M(DC))
Peak Pulse Current (I_TM)
For 8/20μs Current Wave (See Figure 2)
Single Pulse Energy Range (Note 1)
For 10/1000μs Current Wave (W_TM)
Operating Ambient Temperature Range (T_A)
Storage Temperature Range (T_STG)
Temperature Coefficient (a^V) of Clamping Voltage (V_C) at Specified Test Current
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Delectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
COATING Insulation Resistance
RA8 Series RA16 Series RA22 Series Units
4 to 275
10 to 275
4 to 275
V
5.5 to 369
14 to 369
18 to 369
V
100 to 1200 1000 to 4500 2000 to 6500
0.4 to 23
-55 to +125
-55 to +150
<0.01
5000
1000
3.5 to 75
-55 to +125
-55 to +150
<0.01
5000
1000
70 to 160
-55 to +125
-55 to +150
<0.01
5000
1000
A
J
ºC
ºC
%/ºC
V
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.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ra.html for current information.
193
Revision: November 11, 2009
RA Varistor Series