Crystal, Side & Heel fillets

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The default heel and side environment settings for Crystals produce unusually wide side fillets and a minimal heel fillet.   This does not seem consistent with other part types.   Normally the side fillet is minimal and heel fillet is more robust.   Why is the the crystal so different?  Is there perhaps a problem with the default environment settings for crystals? 
Thanks!

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RandyB Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 04 Feb 2013 Location: USA Status: Offline Points: 14	Post Options Post Reply Quote RandyB Report Post Thanks(0) Quote Reply Topic: Crystal, Side & Heel fillets Posted: 13 Jun 2014 at 1:21pm
	The default heel and side environment settings for Crystals produce unusually wide side fillets and a minimal heel fillet. This does not seem consistent with other part types. Normally the side fillet is minimal and heel fillet is more robust. Why is the the crystal so different? Is there perhaps a problem with the default environment settings for crystals? Thanks!



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5719	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 13 Jun 2014 at 1:30pm
	Crystals use the same lead form solder joint rules as the Aluminum Electrolytic Capacitor. Compare the mfr. recommended pattern with the IPC calculations to see if they're close. 2 Pin parts have the luxury of not having pins side by side so the pad width can be larger. 90% of the Crystal component solder joint is under the package and cannot be visually inspected.
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