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Varistors
Page 6 of 14
CHIP VARISTOR PERFORMANCE
REQUIREMENTS
ITEM 1005 1608 2012 3216 TEST CONDITION
Operating
Temperature Range -55° C to + 125 ° C --
Storage
Temperature &
humidity range
40° C max, 70% RH max. At packing
Resistance to solder
heat
1. No damage such as cracks in the chip
element.
2. Greater than 75% of the terminal
shall be covered with fresh solder
Preheat temperature: 100 to 150° C
Preheat time: 1 minute
Solder temperature: 260 ± 10° C
Immersion time: 10 ± 0.5 sec.
Solderability More than 90% of the terminal shall be
covered with fresh solder
Preheat temperature: 100 to 150° C
Preheat time: 1 minute
Solder temperature: 230 ± 10° C
Immersion time: 3 ± 1 sec.
Reflow soldering
1. More than 50% of the terminal shall
be covered with fresh solder.
2. Varistor voltage change not to
exceed ± 10%.
Preheat temperature: 150° C
Preheat time: 1 minute
Solder temperature: 230 ° C
Soldering time: 10 sec.max
Tensile Strength
(terminal strength) Per JIS-C-6429 Appendix 1
Note: Force of 1.8kg for 60 seconds.
Board Flex
(Bending Strength)
1. The body shall not be damaged by the
forces shown in the table
Min Flex by Size - 2.0 3.0 4.0
Appendix 2 Note: 2mm (Min.)
Drop 1. No mechanical damage Drop 10 times on a concrete floor from a
height of three ft (91cm)
Vibration 1. No mechanical damage
Frequency: 10~55—10Hz
Amplitude: 1.52mm
Direction and time:
X,Y,X directions for 2 hours
Temperature cycle 1. No mechanical damage
2. Varistor voltage change: within ± 10%
Step 1. –40 ±3° C for 30± 3min.
Step 2. +85 ±3° C for 30± 3min.
Number of cycles: 100
Heat load resistance 1. No mechanical damage
2. Varistor voltage change: within ± 10%
Temperature : +85 ±2° C
Applied Voltage: working voltage
Duration: 1,000 hours
Measured after 24 hours at room ambient
temperature
Low temperature
resistance
1. No mechanical damage
2. Varistor voltage change: within ± 10%
Temperature: -40 ±5° C
Duration: 1,000 hours
Measured after 24 hours at room ambient
temperature
Humidity resistance 1. No mechanical damage
2. Varistor voltage change: within ± 10%
Temperature: +40 ±2° C
Humidity: 90—95%RH
Duration: 500 hours
Measured after 24 hours at room ambient
temperature