RM48L952和XRM48952的区别

1.RM48L952和XRM48952的区别是什么，

2.XRM48952是否可以下单

如下图是命名规则，我不明白为什么不合格的也有料号，这个可以下单吗

anfu lee：

    带前缀X的一般是工程样片！主要用于在正式产品上市之前给用户评估、测试用，一般BUG较多！按理说不能作为正式产品对外销售。但市场是确实也有卖的！上回就遇到过！最好退货，如果不能退，那就根据已买芯片的Silicon Revision，在Errata中看看它有什么BUG，及有无应对、规避的办法！我上回买的X前缀的芯片，我们已经焊接好了才发现它是工程样片，而且买的时间已经很长了，无法退货了。最后看Errata，找了解决办法。成功的解决了这一问题。

   祝你好运！

    FYI ！

Seven Han：

您好，

关于型号前缀的区别在甄误表中有给出：

http://www.ti.com.cn/cn/lit/er/spnz223b/spnz223b.pdf

X — Experimental device that is not necessarily representative of the final device's electricalspecifications.P — Final silicon die that conforms to the device's electrical specifications but has not completed qualityand reliability verification.NULL — Fully-qualified production device.X and P devices are shipped against the following disclaimer:"Developmental product is intended for internal evaluation purposes."Production devices have been characterized fully, and the quality and reliability of the device have beendemonstrated fully. TI's standard warranty applies.Predictions show that prototype devices (X or P) have a greater failure rate than the standard production devices. Texas Instruments recommends that these devices not be used in any production system because their expected end-use failure rate still is undefined. Only qualified production devices are to be used.

David Bai1：

Hi Hank，

带x的并非不合格的产品，一般为工程样品，作为前期产品内部开发及评估使用。而你下单的话，建议选择RM48L952产品.