Littelfuse High Reliability Varistors User Manual
Varistor Products
L
High Reliability Varistors
High Reliability Varistors
ZA Series
Agency Approvals
• DSSC Approved
• QPL Listed
• CECC Certified
DA Series
DB Series
• ISO Approved
• UL Recognized
• CSA Certified
MIL
QP
Description
Littelfuse High Reliability Varistors offer the latest in
increased product performance, and are available for
applications requiring quality and reliability assurance levels
consistent with military or other standards (MIL-STD-19500,
MIL-STD-750, Method 202). Additionally, Littelfuse
Varistors are inherently radiation hardened compared
to Silicon Diode suppressors as illustrated in Figure 1.
Littelfuse High-Reliability Varistors involve five categories:
1 DSSC Qualified Parts List (QPL) MIL-R-83530
(4 items presently available)
2 Littelfuse High Reliability Series TX Equivalents
(29 items presently available)
3 Custom Types
Processed to customer-specific requirements
- (SCD) or to Standard Military Flow
4 Commercial Item Descriptors (CID)
identified for Government use:
CID AA-55564-3 - Littelfuse ZA Series
CID AA-55564-2 - Littelfuse DA, DB Series
High Reliability
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/za hirel.html or /db hirel.html
for current information.
201
Revised: May 8, 2013
High Reliability Varistors
Varistor Products
High Reliability Varistors
1) DSSC Qualified Parts List (QPL) MIL-R-83530
This series of varistors are screened and conditioned in accordance with MIL-R-83530 as outlined in Table 2.
Manufacturing system conforms to MIL-I-45208; MIL-Q-9858.
Table 1. MIL-R-83530/1 Ratings and Characteristics
Part
Number
M83530/
1-2000B 200 -/+10 130 175 50 325 3800 570 6000 V130LA20B
1-2200D 220 +10, -5 150 200 55 360 3200 650 6000 V150LA20B
1-4300E 430 +5, -10 275 369 100 680 1800 1200 6000 V275LA40B
1-5100E 510 +5, -10 320 420 120 810 1500 1450 6000 V320LA40B
Nominal
Varistor
Voltage
(V)
Tolerance
(%)
Voltage Rating
(V) Energy
(RMS) (DC)
Rating
(J)
Clamping
Voltage
at 100A
(V)
Capacitance
at 1MHz (pF)
Table 2. Mil-R-83530 Group A, B, and C Inspections
AQL
(Percent
Defective)
Major Minor
Group A
Group B
Group C
Inspection
SUBGROUP 1
High Temperature Life (Stabilization Bake) 100% - - - -
Thermal Shock 100% - - - -
Power Burn-In 100% - - - -
Clamping Voltage 100% - - - -
Nominal Varistor Voltage 100% - - - -
SUBGROUP 2
Visual and Mechanical Examination - 1.0% AQL 7.6% LQ 25% AQL 13.0% LQ Per Plan -
Body Dimensions - Per Plan -
Diameter and Length of Leads - Per Plan -
Marking - Per Plan -
Workmanship - Per Plan -
SUBGROUP 3
Solderability - - - Per Plan -
SUBGROUP 1
Dielectric Withstanding Voltage - - - Per Plan -
SUBGROUP 2
Resistance to Solvents - - - Per Plan -
SUBGROUP 3
Terminal Strength (Lead Fatigue) - - - Per Plan -
Moisture Resistance - - - Per Plan -
Peak Current - - - Per Plan -
Energy - - - Per Plan -
EVERY 3 MONTHS
High Temperature Storage - - - 10 0
Operating Life (Steady State) - - - 10 0
Pulse Life - - - 10 0
Shock - - - 10 0
Vibration - - - 10 0
Constant Acceleration - - - 10 0
Energy - - - 10 0
Clamping
Voltage
At Peak
Current
Rating (V)
ITM (A)
Number
of Sample
Units
Nearest
Commercial
Equivalent
Failures
Allowed
High Reliability Varistors
202
Revised: May 8, 2013
Please refer to www.littelfuse.com/series/za hirel.html or /db hirel.html
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
for current information.
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