型号 / 厂家，封装，批号，备注，订购

R1221N15XD-TR / Ricoh Co., Ltd.,Datasheet,07+,Step-down DCDC conv 订购 PDF文档

R1221N15XE-TR / Ricoh,Datasheet,07+,Step-down DC/DC conv 订购 PDF文档

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R1221N16XD-TR / Ricoh,Datasheet,07+,Step-down DC/DC conv 订购 PDF文档

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