关于车规晶振工作温度(Operating Temperature)及频率稳定度(Frequency Stability)，晶诺威科技解释如下：

(MHz Crystal Frequency Stability vs Temperature for Automotive Ethernet)

NOTES:

• 2 pads SMD glass sealed crystal
• Wide operating temperature range
• Superior and reliable performance in harsh environment
• Excellent environment resistant performance , including heat , vibration and shock resistance.
• AEC Q200 Compliant
• Contains Pb in sealing glass exempted by RoHS directive
• Industry Standard Package: 3.2*2.5*0.9 mm

Dimensions and layout for MHz crystal of 2 pads：

(Operating Temperature for Crystal 32.768khz SMD3215)

Dimensions and solder pad for Crystal SMD3215 32.768KHz：

NOTES:

• 2 pads surface mount package
• High reliable environmental performance
• Frequency Stability performance is parabola going downwards.
• RoHS Compliant , Pb-free
• AECQ-200 Certified for Automotive RTC Applications
• Industry Standard Package： 3.2 x 1.5 x 0.75 mm