>Cheaper, probably, but I can't see why they'd be more rugged. A 3A epi >rectifier should have about a 150A top 300A surge rating, 200a for a 1n5400 series rectifier. >and so does a 7.5V >50W zener. Not that I've seen so far in any specs. ... - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end