Multilayer Varistor with FLEXITERM®
General Specifications
GENERAL DESCRIPTIONWith increased requirements from the automotive industry for additional component robustness, KYOCERA AVX
recognized the need to product a MLV with enhancedmechanical strength. It was noted that many components may besubject to severe flexing and vibration when used under the hood automotive and other harsh environment applications.
To satisfy the requirement for enhanced mechanical strength, KYOCERA AVX had to find a way of ensuring electricalintegrity is maitaied whilst external forces are being applied to the component. It was found that the structure of thetermination needed to be flexible and after uch research and development, KYOCERA AVX launched FLEXITERM®,
multilayer varistor. The industry standard for flexure is 2mm miimum. Using FLEXITERM®, KYOCERA AVX provides up to5mm of flexure without internal cracking.
As well as for automotive applications, FLEXITERM® will product Design Engineers with a satisfactory solution when
designing PCB's which may be sbject to high levels of board flexure.

PRODUCT ADVANTAGESAPPLICATIONS••••••••High Flexure Stress

Operating Temperature Range: -55°C to +125/150°C
Qualified in 0603, 0805, 1206, and 1210 Case Sizes
High Mechanical Performance Guaranteed to withstand 5mm Bend Test
Increased Temperature Cycling Performance ≥ 3000 Cycles
Flexible Termination SystemReduction in Circuit Board Flex Failures
Reduction in Circuit Board Flex Failures
AEC-Q200 Qualified or Commercial Grade Products Available• e.g. Depanelization: Components Near Edges of Board

Variable Temperature Applications• Soft Termination Offers Improved Reliability Performance inApplications Where There is a Large Termperature Variation• e.eg. Engine Sensors: Direct Connection to Battery Rail

Automotive Applications• Improved Reliability• Excellent Mechanical and Thermo-Mechanical Performance

HOW TO ORDER
VC

AS080518A

400

Varistor Chip

AutomotiveSeries

SizeWorking Voltage

Energy Rating

Clamping
Voltage

VC = Varistor Chip
VT = Varistor Temp
Rated

AS = 125℃
A3 = 150℃

0603
0805
1206
1210

05 = 5.6Vdc
14 = 14Vdc
18 = 18Vdc
26 = 26Vdc
30 = 30Vdc

A = 0.1J
C = 0.3J
D = 0.4J
J = 1.5J

150= 18V
300 = 32V
390 = 42V
400 = 42V580 = 60V
650 = 67V

RPackaging

D = 7" (1000)*
R = 7" (4000)*
T = 13" (1000)

NOTE: Contact factory for availability of Tolerance Options for Specific Part Numbers.

128

The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or available
online at www.kyocera-avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
TDS-TS-0036 | Rev 1– transient suppression products –ZTerminations

Z = FLEXITERM ®

Multilayer Varistor with FLEXITERM®
Specifications and Test Methods
PERFORMANCE TESTINGBOARD BEND TESTPROCEDURE

AEC-Q200 Qualification

According to AEC-Q200• Created by the Automotive ElectronicsCouncil• Specification defining stress test
qualification for passive components

Test Procedure as per AEC-Q200:
Sample Size:
20 components
Span: 90mm
Minimum deflection spec: 2mmTesting• Components soldered onto FR4 PCB (Figure 1)• Key tests used to compare soft
termination to AEC-Q200 qualifications:• Bend Test
• Temperature Cycle Test

• Board connected electrically to the test equipment(Figure 2)

BOARD BEND TEST RESULTS

1210864200603

StandardFlexiterm
1206

Standard

Flexiterm

Substrate Bend (mm)121086420121086420

Substrate Bend (mm)Substrate Bend (mm)Substrate Bend (mm)

AEC-Q200 Vrs KYOCERA AVX FLEXITERM® Bend Test

1210864200805

KYOCERA AVX ENHANCED SOFTTERMINATION BEND TEST PROCEDURE
Bend Test

Standard

Flexiterm
1210

Standard

Flexiterm• The board is placed on 2 supports 90mm apart 		(varistor side down)• The row of capacitors is aligned with the load stressing knife

TABLE SUMMARY

Typical bend test results are show below:
Style0603
0805
1206
1210

Conventional Termination>2mm>2mm>2mm>2mm

The varistor is soldered to the printed circuit board as shown andis bent up to 10mm at 1mm per second:

FLEXTERM>5mm>5mm>5mm>5mm

TEMPERATURE CYCLE TEST PROCEDURE

Test Procedure as per AEC-Q200:
The test is conducted to determine the resistance of the component when it is
exposed toextremes of alternating high and low temperatures.
•Sample lot size quantity 77 pieces•TC chamber cycle from -55°C to +125°C for 1000 cycles•Interim electrical measurements at 250, 500, 1000 cycles•
Measure parameter capacitance leakage current, breakdown voltage• The load is applied and the deflection wherethe part starts tocrack is recorded (Note: Equipment detexts the start of thecrack using a highly sensitive current detection circuit)• The maximum deflection capability is 10mm

The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or available
online at www.kyocera-avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
TDS-TS-0036 | Rev 1– transient suppression products –129

Multilayer Varistor FLEXITERM®
Specifications and Test Methods
BEYOND 1000 CYCLES: TEMPERATURE CYCLE TESTSoft Term - No Defects up to 3000 Cycles

AEC-Q200 specification states
1000 cycles compared to KAVX
3000 temperature cycles

FLEXITERM® TEST SUMMARY• Qualified to AEC-Q200 test/specification withthe exceptionof using KAVX 3000 temperature
cycles (up to +150°C bend test guarenteed
greater than 5mm).
• FLEXITERM provides performance compared tostandardtermination systems.

• Board bend test improvement by a factor of 2 or4 times.
• Temperature Cycling:• 0% Failure up to 3000 cycles• o sigificant change in electrical characteristics
up to 3000 cycles

WITHOUT SOFT TERMINATIONWITH SOFT TERMINATION

Major fear is of latent board flex failures.

130

Far superior mechanical performance.
Generally open failure mode beyond
5mm flexure.

The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or available
online at www.kyocera-avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
TDS-TS-0036 | Rev 1– transient suppression products –