Step recovery diode

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A step recovery diode (SRD) aka snap-off diode is a semiconductor junction diode having the ability to generate extremely short pulses. It is also called a or a charge-storage diode, and has a variety of uses in microwave electronics as pulse generator or parametric amplifier.

When diodes switch from forward conduction to reverse cut-off, a reverse current flows briefly as stored charge is removed.

In SRDs, doping levels are gradually reduced towards the PN junction to maximize the abruptness with which the reverse current ceases.

See also

Tek products using SRDs

Product Diode(s) used
1502 152-0335-01
1S1
1S2
3S1
3S3 152-115
4S1
4S2
4S3
R293
284
3S76 152-115
S-1
S-2 152-0335-01
S-3 152-0368-00
S-4
S-6 152-0335-01 (for serial > B040000)
S-42
S-52