General Specifications GENERAL DESCRIPTION With increased requirements from the automotive industry for additional component robustness, AVX recognized the need to produce a MLCC with enhanced mechanical strength. It was noted that many components may be subject to severe flexing and vibration when used in various under the hood automotive and other harsh environment applications. To satisfy the requirement for enhanced mechanical strength, AVX had to find a way of ensuring electrical integrity is maintained whilst external forces are being applied to the component. It was found that the structure of the termination needed to be flexible and after much research and development, AVX launched FLEXITERM. FLEXITERM is designed to enhance the mechanical flexure and temperature cycling performance of a standard ceramic capacitor with an X7R dielectric. The industry standard for flexure is mm minimum. Using FLEXITERM, AVX provides up to 5mm of flexure without internal cracks. Beyond 5mm, the capacitor will generally fail open. As well as for automotive applications FLEXITERM will provide Design Engineers with a satisfactory solution when designing PCB s which may be subject to high levels of board flexure. PRODUCT ADVANTAGES High mechanical performance able to withstand, 5mm bend test guaranteed. Increased temperature cycling performance, 3 cycles and beyond. Flexible termination system. Reduction in circuit board flex failures. Base metal electrode system. Automotive or commercial grade products available. APPLICATIONS High Flexure Stress Circuit Boards e.g. Depanelization: Components near edges of board. Variable Temperature Applications Soft termination offers improved reliability performance in applications where there is temperature variation. e.g. All kind of engine sensors: Direct connection to battery rail. Automotive Applications Improved reliability. Excellent mechanical performance and thermo mechanical performance. HOW TO ORDER 5 5 C K A Z A Style Voltage Dielectric Capacitance Capacitance Failure Terminations Packaging Special Code 3 =.3V C = X7R Code (In pf) Tolerance Rate Z = FLEXITERM = 7"reel A = Std. Product 5 Z = V F = XR Sig Digits + J = ±5%* A=Commercial For FLEXITERM = 13" reel 1 Y = 1V Number of Zeros K = ±% = Automotive with Tin/Lead 1 3 =5V e.g., = nf M =±% termination see 11 5 =5V AVX LD Series 1 =V * 1μF only =V NOTE: Contact factory for availability of Tolerance Options for Specific Part Numbers. 17
Specifications and Test Methods PERFORMANCE TESTING AEC-Q Qualification: Created by the Automotive Electronics Council Specification defining stress test qualification for passive components Testing: Key tests used to compare soft termination to AEC-Q qualification: Bend Test Temperature Cycle Test BOARD BEND TEST RESULTS AEC-Q Vrs AVX FLEXITERM Bend Test BOARD BEND TEST PROCEDURE According to AEC-Q Test Procedure as per AEC-Q: Sample size: components Span: 9mm Minimum deflection spec: mm Components soldered onto FR PCB (Figure 1) Board connected electrically to the test equipment (Figure ) BEND TESTPLATE CONNECTOR CONTROL PANEL Fig 1 - PCB layout with electrical connections DIGITAL CALIPER LOADING KNIFE MOUNTING ASSEMBLY CONTROL PANEL Fig - Board Bend test equipment Substrate Bend (mm) Substrate Bend (mm) 1 1 3 NPO X7R X7R soft term Substrate Bend (mm) Substrate Bend (mm) 1 5 NPO X7R X7R soft term 1 1 1 NPO X7R X7R soft term NPO X7R X7R soft term AVX ENHANCED SOFT TERMINATION BEND TEST PROCEDURE Bend Test The capacitor is soldered to the printed circuit board as shown and is bent up to mm at 1mm per second: Max. = mm TABLE SUMMARY Typical bend test results are shown below: Style Conventional Termination FLEXITERM 3 >mm >5mm The board is placed on supports 9mm 5 >mm >5mm apart (capacitor side down) 1 >mm >5mm The row of capacitors is aligned with the load stressing knife TEMPERATURE CYCLE TEST PROCEDURE Test Procedure as per AEC-Q: The test is conducted to determine the resistance of the component when it is exposed to extremes of alternating high and low temperatures. Sample lot size quantity 77 pieces TC chamber cycle from -55ºC to +15ºC for cycles Interim electrical measurements at 5, 5, cycles Measure parameter capacitance dissipation factor, insulation resistance Test Temperature Profile (1 cycle) +15 C +5 C 9mm Max. = mm The load is applied and the deflection where the part starts to crack is recorded (Note: Equipment detects the start of the crack using a highly sensitive current detection circuit) The maximum deflection capability is mm -55 C 1 hour1mins 5
Specifications and Test Methods BEYOND CYCLES: TEMPERATURE CYCLE TEST RESULTS 3 5 5 15 5 3 5 15 5 3 1 5 15 5 3 1 5 15 5 3 Soft Term - No Defects up to 3 cycles FLEXITERM TEST SUMMARY Qualified to AEC-Q test/specification with the exception of using AVX 3 temperature cycles (up to +15 C bend test guaranteed greater than 5mm). FLEXITERM provides improved performance compared to standard termination systems. AEC-Q specification states cycles compared to AVX 3 temperature cycles. Board bend test improvement by a factor of to times. Temperature Cycling: up to 3 cycles No ESR change up to 3 cycles WITHOUT SOFT TERMINATION WITH SOFT TERMINATION Major fear is of latent board flex failures. Far superior mechanical performance. Generally open failure mode beyond 5mm flexure.
XR Dielectric Capacitance Range SIZE 3 5 1 Soldering Reflow/Wave Reflow/Wave Reflow/Wave WVDC 5V 5V 5V 5V 5V 5V 71 Cap 7 G G 331 (pf) 33 G G J J 71 7 G G J J 1 G G J J G G J J J J 15 15 G G J J J J 1 G G J J J J G G J J J J 7 7 G G J J J J 33 33 G G J J J J 39 39 G G J J J J 7 7 G G J J J J 5 5 G G J J J J G G J J J J G G J J J J 3 Cap.1 G G J J J J 13 (μf).1 G G J J J J 153.15 G G J J J J 13.1 G G J J J J 3. G G J J J J 73.7 G G J J J J 333.33 G G J J J J 393.39 G G J J J J 73.7 G G J J J J 53.5 G N N M M 3. G N N M M 3. N N M M.1 N N M M 1.1 N N M M 15.15 N N M M 1.1 N M M. N M M 7.7 M M 33.33 M M 39.39 M 7.7 M.. 5 1 WVDC 5V 5V 5V 5V 5V 5V SIZE 3 5 1 Letter A C E G J K M N P Q X Y Z Max. Thickness.33 (.13).5 (.).71 (.).9 (.35).9 (.37) 1. (.) 1.7 (.5) 1. (.55) 1.5 (.) 1.7 (.7).9 (.9).5 (.).79 (.1) PAPER EMBOSSED AEC-Q Qualified 17 7
X7R Dielectric Capacitance Range 3 5 1 1 11 Soldering Reflow/Wave Reflow/Wave Reflow/Wave Reflow/Wave Reflow Only Reflow Only Reflow Only 1V 5V 5V V 1V 5V 5V V V 5V 1V 5V 5V V V 5V 1V 5V 5V V V 5V 5V 1V 5V 5V V 5V V 5V 5V V 1 Cap C C C 71 (pf) 7 C C C 331 33 C C C 391 39 C C C 71 7 C C C 51 5 C C C 1 C C C 1 C C C C C C G G G G G G G J J J J J J J J J J J J J K K K K K K 1 C C C G G G G G G G J J J J J J J J J J J J J K K K K K K C C C G G G G G G G J J J J J J J J J J J J J K K K K K K 33 33 C C C G G G G G G G J J J J J J J J J J J J J K K K K K K 7 7 C C C G G G G G G G J J J J J J J J J J J J J K K K K K K 3 Cap.1 C G G G G G G G J J J J J J J J J J J J J K K K K K K 13 (μf).1 C G G G G G J J J N N N J J J J J J K K K K K K 153.15 C G G G G G J J J N N N J J J J J J K K K K K K 13.1 C G G G G G J J J N N N J J J J J J K K K K K K 3. C G G G G G J J J N N N J J J J J J K K K K K K 73.7 C G G G G J J J N N N J J J J J J K K K K K K 333.33 C G G G G J J J N N N J J J J J J K K K K K K 73.7 G G G G J J J N N N J J J M M M K K K K K K 53.5 G G G G J J J N J J J M M M K K K M K K 3. G G G G J J J N J J J M M M K K K M K K 3. G G G G J J J N J J J M M M K K K M K K.1 G G G G J J M N J J J M M M K K K M K K 1.1 G J J M N J J M M Q Q K K K P K K 15.15 G M N M N J J M M Q Q K K K P K K. G G J M N M N J M M Q Q Q M M M P M M 33.33 N N M N J M P Q P P P Q X X 7.7 J J J N N M N M M P Q P P P Q X X. N N N M Q Q Q P P Q X X X 5 1 J J N N N M Q Q Q P Q Q X X X Z Z 155 1.5 Q Q Q P Q Z Z X X Z Z 5. Q Q Q X Z Z Z Z Z Z Z 335 3.3 Q Q Q X Z Z Z Z Z Z 75.7 Q Q Q X Z Z Z Z Z Z Z Q Z Z Z Z Z Z Z Z 1V 5V 5V V 1V 5V 5V V V 5V 1V 5V 5V V V 5V 1V 5V 5V V V 5V 5V 1V 5V 5V V 5V V 5V 5V V 3 5 1 1 11 Letter A C E G J K M N P Q X Y Z Max. Thickness.33 (.13).5 (.).71 (.).9 (.35).9 (.37) 1. (.) 1.7 (.5) 1. (.55) 1.5 (.) 1.7 (.7).9 (.9).5 (.).79 (.1) PAPER EMBOSSED 17