T the.rebel.agent New Member Oct 25, 2008 #1 Still doing my research about old transistors and found this variant. Essentially It is a TO-39 case but only 4.7mm tall, not 6.6mm. https://www.electro-tech-online.com/custompdfs/2008/10/h03a.pdf Motorola produced a MWA transistors series using this case, National is doing the same for the LM317H voltage regulator so I am wondering how old is this specification. Any idea?
Still doing my research about old transistors and found this variant. Essentially It is a TO-39 case but only 4.7mm tall, not 6.6mm. https://www.electro-tech-online.com/custompdfs/2008/10/h03a.pdf Motorola produced a MWA transistors series using this case, National is doing the same for the LM317H voltage regulator so I am wondering how old is this specification. Any idea?